Document 6Rjg1D0ZDxBbvXMD5jNqj1xX1

PLAINTIFF'S EXHIBIT |i The American Ceramic Society BULLETIN A monthly publication devoted to the proceedings of The Society, discussions of plant, technical, scientific, art, and cooperative research problems. Volume 31, 1952 Charles S. Pearce, Editor Luther E. Ohrstedt, Advertising Manager Arthur S. Koschny, Assistant Editor Mary Ann Weigelt. Editorial Assistant Committee on Publications: Karl Schwartzwalder, Chairman; R. E. Birch, J. J. Canfield, and C. H. Hahner Contributing Editors: Officers of Industrial Divisions and Sections (For names, see back of Title Page) Executive, Editorial, and Advertising Offices: 2525 North High Street, Columbus 2. Ohio Publication Office: 20th and Northampton Streets. Easton, Pa. PLAINTIFF'S EXHIBIT American Ceramic Society Membership Roster This Roster of paid Members is published for the use of the Members of The American Ceramic Society. The list is alpha betical, with names of Corporation Members in bold-face type and their voting representatives following in parentheses. An asterisk (*) follows the name of each Society Fellow, and a dagger (t) follows the name of each member of the Institute of Ceramic Engineers. Junior and Student Members are indicated by (J) and (S), respectively. Life and Honorary Members are also indi~.-vl parenthetically after the names. A separate Roster of the Institute of Ceramic Engineers, showing grades of membership, appears on pages 33 and 35 of the advertising section in this issue. New Members and other changes received too late to be included are listed in the Addenda at the end of this Roster. A Abbey, R. G.. General Refractories Co., 1520 Locust St., Phila delphia 2, ?a. Abe. ios:o. 1001, Kami-ikegami-cho, Ota-ku, Tokyo. Japan .Abernethv. Lonnie L., Jr.t (S), Engr. Expt Sta, Ohio State University. Columbus. Ohio Abingdon Potteries, Inc. (J. M. Lewis), Abingdon, 111. Abramson, Isaac, Av. Copacabana, 939-Apto. 902, Rio de Janeiro. Brazil Achuff, Charles E, 1611 Thursby Ave, Kirkwood 22. Mo. A.ckerson. C. H.. Washington Porcelain Co., Willow St. Washington, N. J. A C Spark P'.ng Div, General Motors Corp. (Karl Schwartz- walder), Fiint 2. Mich. Adams, Edward M., Cloverport, Ky. Adams, Mrs. Le Roy, Adams Achers Ceramics, R.R. 2, Vashon, Wash. Adams. Milton. The Graduate House. Massachusetts Institute of Technology, Cambridge 59, Mass. Adams. P. Bruce. Coming Glass Works, Lab. Bldg.. Corning, N. Y. Adaxnston Plat Glaaa Co., Box 631, Clarksburg, W. Va. Adcock, Albert S.A .American Radiator & Standard Sanitary Corp., 6920 Frankiin Ave.. New Orleans 22, La. .Adcucx. Lawrence W,, -ttg W. Clinton St.. Frankfort. Ind. Acderley. James R., 42 Church St., Brierley Hill, S. Stafford, England Adderson. J. G., 1C621 Crestwood Dr., Seattle 88, Wash. Aderhold. George H,, Saxonburg Potteries, Saxonburg, Pa. .AiBerbach. Harry, R.R. 4, Frankfort, Ind. Agashe. R. N." (Bricks), Tata Iron & Steel Co. Ltd., P. O. Kumardhubi E-I. Dt. Manbhum. India Agnew. G. D., Universal Potteries. Inc., Cambridge, Ohio Agrcn. Albert M.. Republic Steel Corp., 6100 Truscon, Cleve land. Ohio Aheam. V. P,, National Industrial Sand Assn., 1325 E St. N. W., Washington 4, D. C. Akarn, J. W.. National Fire Proofing Co. of Canada Ltd., Aldershot, Ont, Canada Akmoran. Miss Huban (S). Box 616, Alfred. N. Y. Akron Porcelain Co. (F. W. Butler), Akron 14, Ohio Albers-Schoenberg, Ernst, Redfield Village, Apt. 17 A 4, Metuchen. N. J. Albert. Joseph. Albert Pottery, Charablee, Ga. Albertalli. Stephen L. (J), Coming Glass Works. Coming, Albery. D. F ." 1433 23rd St N. W.. Canton 9. Ohio AJcock. Ronald H, "Ferrum" Espana 402-600. Avellaneda. 3uenos Aires. Argentina Alden, Charles Z, 2242 W. Third St. Sedalia. Mo. Menius. Carl Axe! (J). 18 Slottsgatan. Abo. Fin!?nd Alexander, A. E., Tiffany & Co., Fifth Ave. & 57th St.. New York 22, N. Y. Alexander, John A, 1909 20th St. Parkersburg. W. Va. Alexander. John B.. Southwestern Portland Cement Co.. 1034 W ilshire Blvd, Los Angeles 17. Calif. ^N^Y^r M. (J), 2376 Hamilton Ave., North Bellmore. Alexander. R. B., National Tile & Mfg. Co. 1200 E. 26th St. Anderson. Ind. yford. D. C, Mullite Refractories Co.. Shelton. Conn. Ueemene Vermiging voor re Nederlandse. Aardewerk en Glas Industrie, c/o Mr. H. G. P. Koifschotcn. Haagweg 139. Rijswiik. Netherlands Mien, Alfred W., Ceramic Engr. Dept., Univ. of Illinois, Urhana. III. Alien, Ben. Corning Glass Works, Corning, N. Y. Mien, Ralnn D.. 6708 Miami Ave.. Madeira. Ohio Mien. Richard E, 242 Sly Ave.. Coming. N. Y. ol. 31, No. 10 (1052) Allen, Richard L.,T 53 Pilgrim Rd., Plymouth Meeting, Pa. Allen, Robert G., Robert G. Allen Co, Box 110, Mechanicville. N. Y. Allen, Warren W, Jr, Hydraulic-Press Brick Co, South Park, Ohio Alliance Ware, Ltd. (R. E. Strain), Box 550, Vancouver, B. C, Canada Alliegro. Richard A. (S). 3ox J-3. Alfred. N. Y. Allison. Adrian G, Batteile Memorial Institute, 505 King Ave, Columbus 1. Ohio Allison, Leroy W,, Ceramic Publishing Co, Inc, Box 9073. North Station. Newark, N. J. Alt, Leslie R,,t 547 Simon St. Hayward. Calif. Alton Brick Co. (Eben Rodgers, jr.). Alton, 111. Alnminum Co. of America tA. R. Pickett), 801 Gulf Bldg.. Pittsburgh 19, Pa. Alves. Jose J. Rodrigues, Rua Cruz e Souza. 39 (Adimacao), Sac Paulo. Brazil Amberg, Charles R,*T Alfred University Research Lab, R. R. 1, Box 212B. Kingston. N. Y. Ambrose, Mary S, 515 Eighth St, New Brighton, Pa. Ambrosone, Joseph P, 170 Reynolds Ave, Corning, N. Y. American Clay Forming Co. (Ross Stoner), Timn. Ohio American Colloid Co. (Paul Bechtner), Merchandise Mart Plaza, Chicago 54. 111. American Encczstiz Tiling Co, Inc. (Robert A. Williams, Jr.), Ninth St & Kenilworth Ave, Lansdale, Pa. American Gaa Assn. (C. G. Segeler), 420 Lexington Ave, New York 17, N. Y. American Lava Corp. (John Kruesi), Chattanooga 5, Tenn. American Nepheline, Ltd. (H. R. Deeth), Lakefield, Ont, Canada American Optical Co. (A. H. Bennett), Research Lab, Box i37, Stamford, Conn. American Porcelain Enamel Co. (Robert Long), 1285 Keating Ave, Muskegon 36. Mich. American Potash Ac Chemical Corp. (R. M. Curts), 122 E. 42nd St, New York 17, N. Y. American Radiator & Standard Sanitary Corp. (James S. Goodman). 834 E. Broadway. Louisville 4. Kv. American Smelting dc Refining Co. (L. G. Matthews), 120 Broadway, New York 5, N. Y. American Window Glaaa Co. (A. S. Crandon), 16th Floor, Farmers Bank Bldg, Pittsburgh 22, Pa. Ames. R. N.J 326 Park Place. Irvington 11, N. J. Amin. M. G. (S), 2944* Greer Ave, St. Louis 7. Mo. Amin, R. B, Alembic Chemical Works Co. Ltd, Baroda. India Ammerman, J. H,t 1656 Elberon Ave, E. Cleveland 12, Ohio Ammon, Millard G, Ferro Corp, 4130 E. 56th St, Cleveland. Ohio Amaler Morton Corp. (P. M. Offill), Chamber of Commerce Bldg, Pittsburgh 19, Pa. Anchor Hocking Glaaa Corp. (W. V. Fisher), Lancaster. Ohio Ancizar-Sordo, Jorge. Laboratorio Quimico Nacional, Minis ters de Fomenio. Ant 25//. Bogota. Colombia Anderson, Harry L,,f Republic Steel Corp, Warren. Ohio Anderson, Herbert H. (S). Graduate House 422. Massachu setts Institute of Technology, Cambridge 39. Mass. Anderson, R. E, Robertson Mfg. Co, Box 848, Trenton 5, N. J. . Anderson. Rupert C, Valley View R. R. 2, New Brighton. Pa. Anderson. Scott, The Anderson Physical Laboratory, 609 S. Sixth St, Champaign, 111. Anderson, William B,, Titanium Pigment Corp, 111 Broad way, New York. N. Y. Andreasen, A. H. M. (Honorary), Oster Voldgade 10, Copen hagen K. Denmark Andrews, Andrew I,*' Ceramics Bldg, University of Illinois. Urbana, 111. 411 Andrews, Clifford M., 3556 Avalon Rd., Shaker Heights 20, Ohio Andrews. Ray, B. F. Drakenfeid & Co., Inc., Box 19, Wash ington. Pa. Annis. Aldon P.. c/o Texas Vitrified Pipe Co., Box 111, Min eral Wells. Texas Antaki, Emiie, Calle Espana 402/600. Avellaneda, Buenos Aires, Argentina Anwyl, Robert H.. Washington Brick Co., Muirkirk, Md. Aradine. Paul W.. Tavlor Instrument Cos, Box 110, Rochester 1. N. V. Arango. G. Botero, Balboa 63-13, Medellin, Colombia ArchbCId. Walter H, Jr.. 348 Ricels Mill Rd_ Wyncote. Pa. Archibald, W. A., The British Iron & Steel Research Assn, ` 11 Park Lane, London W.l. England Archie. Chad L., Jackson Brick & Clay Products Co., Corinth, Miss. Archie, Chad L, Jr. (S), Box 465, Corinth, Miss. Arensberg, Francis L-, Vesuvius Crucible Co., Box 8275, Swissvale, Pittsburgh 18, Pa. d'Argenteuil, Comte L. de Meeus, Societe Ceramique. Hoge Barakkenstraat 6. Maastricht, Netherlands Arketex Ceramic Corp. (George Shoemaker)', 6 X. Walnut St., Brazil. Ind. Armco Steel Corp. (R. S. Bums), Research Library, Middle- town. Ohio Armistead. W. H., 63 E. First St., Coming, N. Y. Armstrong Cork Co. (E. C. Emanuel), Research Labs.. Lan caster, Pa. Armstrong. Edward R. (S), 1902 Cameron St., Regina. Sask, Canada Armstrong, Leland R..t 68 McKennan Ave., Washington, Pa. Arnold. Howard C..'t 76 Sta.odish Blvd.. Pittsburgh 2. Pa. Arnold. Russell E..* Box E. cast Akron Station. Akron 5. Ohio Arnold, Thomas M.,T Red Wing Potteries. Inc.. Red Wing, Minn. Arrance. Frank C.,1 Electric Auto-Lite Co., Spark Plug Div., Postoria. Ohio Arrandale. Roy 5.. Thatcher Glass Mfg. Co.. Inc.. 1901 Grand Central Ave.. Elmira. N. Y. Arras, George, 32 S. Peoria S:., Chicago 7, HI. Arthur. Edwin P.. 2415 Catherine Rd.. Altadena. Calif. Artis. William E.. Dept, of Ceramics, Pine Ridge Indian Agency. Pine Ricee. S. D. Ar.vir.e. A. 5.. Retraetorv L Insuiation Corp.. Port Krr.r.eav, Pa. Asdell. Bernard K., Edgar Brothers Co, McIntyre. Ga. Asher. Gler. J.,* 2568 Illinois. South Gate. Caiii. Ashman, Leland E.. Mellon Institute, 4400 Fifth Ave., Pitts burgh. Pa. Ashworth, George L, Sc Brothers, Ltd. (R. L. Evans), 3road St. Works. Haniev. Stoke-on-Trent. England Assad. Elias, jr, Rua Costa Aguiar 975. Sao Paulo. 3razil Atleins. Richard ;Si, Coilege of Ceramics. Alfred University, Alfred. X. Y. Auer. Konrad F., Xetstal. Kt. Glarus, Switzerland Augustine. Frank. 1017 Ivanhoe Rd., Cleveland, 10. Ohio Auit. Neil X.. Research Lab.. Norton Co.. Worcester. Mass. Auskem, Allan (5). Box 1-9, Alfred, N. Y. Auitenal Laboratories, Inc, (R. C. Feagin), 224 E. 39th St, New York. X. Y. Austin, Arthur O.. Box 109. Barberton, Ohio Austin. Charles E, Consolidated Brick Co, Horseheads, X. Y. Austin. Chester R..*'f Koppers Co, Research Dept, Koppers 31dg,, Pittsburgh, Pa. Austin. James 3,* Research Lab, United States Steel Corp, Kearny, X. J. Austin, j. L,? Carborundum Co, Niagara Falls. N. Y. Austin. Lewis M, 4 S. State St, Vineland. N. J. Avrutis. William J, 8615 Fort Hamilton Pkwv, Brooklyn 9. Aydelott. Elliott C.J R. R. 1, Clarks Summit, Pa. Azevedo. Marcello R. V. de.t R. Peixoto Gomide 427, Bairro Bela Vista, Sao Paulo, Brazil B Baab. Kenneth AJ 623 Sixth Ave, Bethlehem, Pa. Babcock. Clarence L,* 1718 Potomac, Toledo 7, Ohio Babcock. M. G, Pittsburgh Plate Glass Co, 2000 Grant Bldg, Pittsburgh 19. Pa. Babcock. Paul R..T Frenchtown Porcelain Co, Frenchtown. X. J. Babcock ic Wilcox Co. (A. M. Kohler). 161 E. 42nd St, New York 17. X. Y. 412 Bach. William E, Jr. ij). o91U Montgomery Rd, Cincinnati 36. Ohio Bacher. Holland R, Rock Tavern. N. Y. Bachman, Charles D,, 807 E. Main St, Millville, N. J. Bachman, George S, 151 W. Washington St, Shelbvville. Ind. Bachman. James R. (S), 18 Delaware Ave, Milford. N. J. Bachman, Wheeler C, Carr China Co, Grafton, _W. Va. Backus. Lulu S, 451 S. Goodman St, Rochester 7, X. V. Bacon, Frank R,, 3153 Darlington Rd, Toledo 6. Ohio Bacon. Leslie R,, Research & Development Div, Wyandotte Chemicals Corp, Wyandotte. Mich. Badger Alfred E," Libbey-Owens-Ford Glass Co, 1701 E. Broadway, Toledo 5, Ohio Bagiey, Xorman H, 11 Hiilcrest Rd, Caldwell, X. J. Bailey, Cuthbert, Doulton & Co, Ltd, Royal Doulton Pot teries, Burslem. Stoke-on-Trent, England Bailey, Floyd,r 840 S. Sixth St, Kankakee, 111. Bailey, James,* 95 Steele RcL, W. Hartiord 7, Conn. Bailly, Georges, Ste. Electro Chimie Ugine, 43 Rue de L'ln- dustrie, Venissieux (Rhone), France Bain, Andrew R, The Whins, 26 Park Terrace, Stirling, Scotland Bair, George J,*r Optical Glass Plant, Corning Glass Works, Corning, N. Y. Baker, Arvid H,, 89 Church St, Port Allegany, Pa. Baker, Burton E,, 15 Gwvnlake Dr, Baltimore 7. Md. Baker, D. Martin. 1025 Gardner Blvd, Barberton, Ohio 3aker. Dunbar J. fS). 118 S. Jefferson St, Mt. Union. Pa. Baker, Henry J. (S), R. R. 1. Harbor Creek, Pa. _ Baker, Houston R, 133 E. Third St, Corning. X. Y. Eaidauf. Ear! E,,T Flamingo tile Corp, Box 268. Lake Wales, Fla. Ealdry, Stanley F. T, E. R. G. Industrial Corp, Ltd. Matthew S:,, Dunstaslc, Beds, London. England Baldwin. William J, Titanium Alloy Mfg. Div, National Lead Co, Niagara Falls. N. Y. Balina. Marceio O, C.A.P.E.A, Lanus-Pcia Buenos Aires, Buenos Aires. Argentina 3aiinkin, Isay A, University of Cincinnati, Cincinnati 21, Ohio Balint. Nancy (S). Rm. 242. The Meridian Hill, 16th at Euclid, Washington. D. C. Ealke. Claire C, 501 Lombardy Rd, Drexei Hill. Pa. Ball Brothers Co, Muncie, Ind. Ball. Albert !,, Bay State Abrasive Products Co, Westboro, Mass. Banister. Monte W. (S). 1513 S. Cornelia, Sioux City 6. Iowa Baque. Harold W, 1511 Mohican Dr, Pittsburgh 23. Pa. Barber, Fred O, 788 Evening St, Worthington. Ohio Barber. Stephen W, Owens-Illinois Glass Co, 1700 X. West- wood Ave, Toledo. Ohio 3arbour. David J, 345 E. Highland Dr, Zanesville. Ohio 3arinm Reduction Corp. iK. O. Priddy), South Charleston 3, W. Va. Barbre. Norris H, Mellon institute, 4400 Fifth Ave, Pittsburgh 13. Pa. Barker, Harry L,, The Saiem China Co, Salem. Ohio Barlett, Helen B,* A C Spark Plug Div., General Motors Corp, Fiint 2. Mien. Barnes. Lt. Harry H,,T 166th Ftr. Sqd. Lockboume Ar B, Colum bus. Ohio Barnes. Wilson R,, Corhart Refractories Co, 16th and Lee Sts, Louisville 10. Ky. Barnett. Charles \V. H. c/o E. Barnett, Hunter. X. Y. Barney. Ronald X. (S), Eox 1677, Georgia Tech, Atlanta. Ga. Barr. Harry, Consolidated Feldspar Corp, 28 W. State St, Trenton. X. J. Barr, James A, Jr, Chemical Div, Armour & Co, 1355 W. 31st St, Chicago 9. 111. Barr. Xorman Ev Eagle Picher Co, Box 290 Research Dept., Joplin. Mo. Barr, Robert A, 162 Buena Vista Ave, Fair Haven, X. J. Barr. Seymour J, Shenandoah Brick & Tile Corp, Box 32, Winchester, Va. Barrett. Harvey N, Jr, 2233 St. James Parkway, Cleveland Heights. Ohio Barrett. Lionel R,, Chem. Engr. & Appl. Chem. Dept., Im perial College of Science and Technology, Prince Consort Rd, S. Kensington, London S. W. 7, England Barrett, Maurice (Lite), 8 Oxclifte Rd, Morecambe & Heysnam. England Barrett. Wayne E, R. R. 1. West Des Moines. Iowa Barringer, Lawrence E,,*? 23 Front St, Schenectady 5. X. Y. Barron, Frank C, 2263 Arkansas-Missouri Highway, Park Hill. North Little Rock. Arkansas Bartels, Keith D, U. S. Steel Co, Fairless Works. Masonr) Dept, Morrisville. Pa. Ceramic Bclletk Bartholomew. George A, 5514 Wilkins Ave., Pittsburgh 17, Pa. Bartlett-Collins Co. (Harrison 1. Bartlett), Sapulpa, Okla. Bartlett. E. E.. 4587 Boca Chica Blvd.. Brownsville, Texas. Bartlett, Harrison I., Bartlett-Collins Co., Sapulpa, Okla. Barton, G. E.* (Life), 227 Pine St., Millville, N. J. Barzagni, Luciano, Ceramica Sao Caetano. Rua Roa \ ista. 84-6" ancar-, Caixa Postal 278, Sao Paulo. Brazil Bass, N. \V,, Brush Beryllium Co., 4501 Perkins Ave., Cles'e- land 5. Ohio Bluett, Leon B.. Box 284, Alfred. N. Y. j.i.rctt, Robert. Staso Milling Co., Darlington. Beaver County, Bateman. L. A.. Eljer Co.. Enamel-W'are Div.. Salem. Ohio Bates. Charles E., Hanley Co., Summerville, Pa. Bates. Edgar A.. 204 Laurel Dr.. New Kensington. Pa. Bates, H. Clifford, Corning Glass Works of Canada Ltd., Leaside. Ont.. Canada Bates. P. H.* (Life). 1620 Seventh St. N7.. St. Petersburg, Fla. Bateson. H. Marshall. 68 Spring Grove. Loughton, Essex, Eng- land Eauvr. Richard M.. 728 St. Louis Ave.. Zanesville. Ohio Bauieke. Maynard P. (S), Ceramic Engineering Dept.. Iowa State College, Ames. Iowa __ Baumann, Henrv N'., Jr,7 1273 Wyoming Ave., Niagara Falls, N. Y. Baumer, Leon N.. Box 460. Hulton Rd., R. R. 2. Verona, Pa.. Baumler. Karl. Pittsburgh Coming Corp, _5edalia. Mo. Bausch & Lomb Optical Co. (Murray Scott), Rochester 2, N. Y. Bay State Abrasive Products Co. (O. S. Buckner), Westboro, Mass. Bayliss, John M.. 629 Frederick St., Lancaster, Ohio Beal, D. S.. Oak Dr.. Poland, Ohio Beals, M. Douglas, Research Lab., Titanium Div., National Lead Co., South Amboy, N. J. Beals. Robert J., 109 Ceramics Bldg., University of Illinois, Urbana, 111. Beam. James R,*7 Trenton Potteries Co., Plant --1, 509 N. Clinton Ave., Box 1-1. Trenton. N. J. Beard, Clinton L.. 2562 N. Palmer St.. Milwaukee 12, Wis. Bearer, Louis C.. c/o Phillips Petroleum Co.. Rocket Fuels Div.. Box 548. McGregor. Texas Beasley. Dennis R.. Box 233. Cameron. \Y. Va. Beathard, Robert K, General Tile Corp.. Box 58, E! Segundo. Calif. Beaton. Orville, Gem Clay Forming Co., Sebring, Ohio Beaudoin. Armand J. (S). Box 1008. Alfred. N. Y. Beaver. Wallace W, Brush Be-yllium Co.. -201 Perkins Ave., Cleveland. Ohio Beazell. William H., American Window Glass Co.. Farmers Bank 31dg.. Pittsburgh 22. Pa. Bebbingtcn. Philip J. f S ). 145 Pleasant S:.. Arlington. Mass. Bechtel. Frances E.. Winter Rd.. Sanriv Beach. Grand Island. ^ N. Y. Bechtner. Paul. American Colloid Co.. Merchandise Mart Plaza. Chicago 54, III;. Beck, Elmer \V.. Ceramic Supply Co.. Crooksville. Ohio Beck. Homer, Richland Shale Brick Co., Mansheid, Ohio Beck. Norman R.. Carr-Lowrey Glass Co.. Baltimore 3. Md. Beck. Roy D., 6530 Moraine Ave.. Hammond, Ind. Beck. Warren R., Central Research Dept.. Minnesota Min ing & Mfg. Co.. St. Paul 1, Minn. Beckemeyer. Harry J., Research Lab., Universal-Rundle Corp, New Castle. Pa. Becker. Bruce N. (J). 130 Walnut St.. Fleetwood. Pa. Becker. Martin G,, Box 542. Brookhaven. Miss. 3eecher. Miiton F..*7 50 Woodland Rd.. Hoiden. Mass. Beeler. L. S.. Reynolds Metals Co., 2500 S. Third St.. Louis ville I. Kv. Beerman, Henry P. (J). National Bureau of Standards. Tem perature Measurements Section. Washington 25. D. C. Beeton. Earl E,7 1604 Lincoln St.. Bethlehem. Pa. Behrenberg, John (S). 502 Pennsylvania Ave. E.. Warren. Pa. Behrend, Oswald, 747 Park Ave.. Vineland, N. J. Behringer. H. L, Tygart Valley Glass Co.. Washington, Pa. Beinlicn. Alfred W,, 3404 19th Ave.. Sheffield. Ala. Beinlich. Justus J.. U. S. Steel Co.. Rm. 2421. 525 William Penn Place Bldg.. Pittsburgh 30. Pa. Beil. Kenneth E., Saskatchewan Clay Products, Estevan. Sask., Canada Bell, Richard, Bell Clay Co.. Gleason. Tenn. Bell, W. C.. Dept, of Engineering Research, North Carolina State College, Raleigh, N. C. Bellido, Bartolome Darnis, Lugones (Oviedo), Spain Below, Henry', Pennsbury Pottery, Morrisviile, Pa. Benbenek. Raymond,7 Boren Clay Products Co., Pleasant Garden. N. C. Vql. 31, No. 10 (1952) Bender, Bob G.T (J), Kauland Corp., 4245 N. Knox Ave., Chi cago 41, 111. Benedict. Virginia. American Ceramic Society. 2325 N. High S:., Columbus 2, Ohio Bengal Electric Lamp Works, Ltd. (N. C. Sen). 126 Mol- lapara Rd.. Calcutta 32. Parganas. India Benjamin Electric Mfg. Co. (Hovt P. Steele), Des Plaines. 111. Benner. Stanley G.. A-t! 416 Bureau of Aeronautics. Navy Dept., Washington 25. D. C. Benner. W. J.. 730 Romona Rd.. Wiimette. 111. Bennett. Alva H., American Optical Co.. Research Lab., Box 137, Stamford, Conn. Bennett, A. Lee,*7 Gladding, McBear. & Co., 2901 Los Feliz Blvd.. Los Angeles 39, Calif. , .. Bennett, Dwight G.,*7 204 Ceramics Bldg., University of Illinois, Urbana, 111. Bennett. Francis H,, Pratt & Whitney Aircraft, MDL D-58, East Hartford 8. Conn. Bennett, Frederick R., Box 325, Hartsville, S. C. Bennett, Harry ]., Crooksville China Co., Crooksville, Ohio Bennett. Myles P.,T 6552 N. Oldham Lane, San Gabriel, Calii. Bennett, Walter R, Acme Brick Co.. Denton. Texas Bentz. Frank J., National Plumbing Pottery, Inc., 303 N. Front St., Columbus, Ohio Berg, Martin, Jr.. Box 2003, Tampa 1, Fla. Berg, Morris (S), Graduate House. Massachusetts Institute oi Technology, Cambridge, Mass. Berger. Bernard M.t Dept. 817, Sears, Roebuck & Co., 925 S. Homan Ave, Chicago 7, 111. Berger. Donald Francis. 267 N. St. Clair St.. Pair.esvifle. Ohio Begeron. Clifton G,7 12C27 \V. Potter Rd, Milwaukee 12. Wis. Berg-Iversen, Wiggo, A/S Egersunds Fayancefabriks Co, Egersund. Norway Berkeinamer. Louis H,7 Ohmite Mig. Co, 4833 Flournoy St,, Chicago 44. III. Bernardini, Guv F, Box 70-A, R. R. 1, Latrobe, Pa. Berns. Milton H, 42 Dudley Ave, Hamburg, N. Y. Bernstorf, Robert B,, Box 679, East Liverpool, Ohio Best. Edison F.. 2741 119th St.. Toieao 11. Ohio Bethlehem Steel Co. (H. M. Kroner). Berhiehem, Pa. Bertison, L. 5, Chambers Brothers Co.. 52.nd 5:.. Corner of Media. Philadelphia 31, Pa. Betz. George C,*7 Metal 3: Thermit Corp.. ICO E. 42nd St., New York 17. N. Y. Betz. Wilbert A, The U. S. Potters Assn, KK E. Fourth St, East Liverpool, Ohio Bevis, Raiph E,7 Aconcagua 615, Mexico 10. D. P. B. G. Corp. (Frank J. Failon), Ridgeheid. N. J. Bickelhaupt. Roy E. (J). 417 S. 25th. Apt. 3-C. South Bend. Ind. Bickford, Fred A.. Box 29. R. R. 2. Campbell. N. Y. Bicknell. R. S.. 335 1 9th Ave. N, St. Petersburg 2. Fla. Biddle. George J.. 208 S. La Salle St, Chicago. 111. Bidduiph. Albert, 11 Holden Rd.. Penn, Wolverhampton. Eng land Biawell, George E, 605 \V. Martin St, Abingdon, 111. Billian, Carroll J, 3707 Dikway Dr, Toledo 14. Ohio Billig. Merle L. (S). 2002 Sunrise Ave, Portsmouth. Ohio Biilings. David D, Giass Containers. Inc, 3601 Santa Fe Ave, Los Angeles 11. Calif. Birch, Raymond E,*7 1800 Farmers Bank Bldg, Pittsburgh 22. Pa. Bird. Paul G, 1928 N. Stoddard. Wheaton. III. Bishop, Frederic L..* American Window Glass Co, Re search Dept, Turtle Creek. R. R. 2. Pa. Bishop. George J. (S), Prefab 237. Clemson College. Clemson, S. C Bishop. Harold E, Owens-Coming Fibergias Corp, Anderson. S. C ^ Bishop, Laveme R,, 3329 Market. East St. Louis. 111. Rissell. Don W,, Jr,7 850 Sherwood Dr. N. W.. Beloit. Wis. Bissell. Everett S, L. H. Butcher Co, 5628 E. Olympic Blvd, Los Angeles 23. Calif. Black. H. R, Kimble Glass Co, 2626 Dorr St, Toledo, Ohio Black. James A, 13700 Sparta Ave. N. W,, Kent City, Mich. Black. Lloyd V, 1006 Oregon Ave, Tarentum, Pa. Blackburn. A. Reif,7 86 W. Como Ave, Columbus 2. Ohio Blackwood, James M,,7 59 W. Royal Forest Blvd, Columbus. Ohio Blaes. Henry M, II (S). Sigma Phi Epsilcn. 590 George St, New Brunswick. N. J. Blaha. Emil, 415 Ashmead Rd, Cheltenham, Pa. Blair. Laurence R, Titanium Div.. National Lead Co, Box 58, South Amboy, N. J. 31air, Marion \V,* 2131 S. Center St, Terre Haute. Ind. Blake. A. E, 78 Park Ave, West Caldwell. N. J. Blake, Edwin M, Box 210, Mount Kisco, N. Y. 413 Blake, William V,t Mackiir. Co., Jackson, Mich. Blanchard, M. Kenneth, A. 0. Smith Corp., 3533 N. 27th St, Milwaukee 1. Wis. Bland. Edward J, 10218 Park Heights Rd, Cleveland 4, Ohio Blankcnsteir.. E. E., Western Electric Co., 2323 S'nadeiand Ave, Indianapolis. Inc. B'.au. Henry K,*' Federal Glass Co.. E. Innis Ave., Columbus 7, Ohio Blenko, William H., Jr.. 1412 Main St., Miltor.. W. Va. Blessing, Robert Lee,? 1720 Boneta Ave., Richmond Heights 17, Mo. Bliss, L. G, Foote Mineral Co., 18 W. Chelten Ave, Phil adelphia 44, Pa. Blocksidge, Arthr B,, Jr., Jones & Laughlin Steel Corp., 40 Longworth St.. Pittsburgh 7, Pa. Blodgett, Malcolm, 660 Main St, Woburn, Mass. Blodgett. William E. (J1, 18 Mishawum Rd.. Woburn, Mass. Bloom, Ray A, c/o Technical Library, Timken Roller Bearing Co, Canton 6, Ohio Bloor, C. A, Universal Clay Products Co, Sandusky, Ohio 31oore, Robert B, Swinnertons Ltd, Hanley, Stoke-on-Trent, ELngland Bloss. Haroid E. (S), Box 159. Alfred. N. V. Bine Ridge Glass Corp. (J. H. Lewis), Kingsport. Tenn. Blum, Seymour' (5). Dept, oi Metallurgy, Rn. 4-051, Massa chusetts Institute of Technology. Cambridge 39, Mass. Blume, Arthur J,' c/o Murray Tile Co, Cloverport. Ky. Blunt. Royden A,,* Buck Giass Co, Fort Ave. & . LawTence St, Baltimore 30, Md. Blythe Colour Works, Ltd, Cresswell, Stoke-on-Trent. Eng land Bcardman, Charlotte K, Thomas A. Edison, Inc.. 51 Lakeside Ave, West Orange. N. J. Bobrowsky, A. R.. 1528 Richmond Ct, Willow Run, Mich. Boeker, V. W.,t Owens-Corning Fiberglas Corp, 16 E. 36th St, New York, N. Y. Bogatay, Paul, 45 W. Weisheimer Rd, Columbus 2. Ohio Bognar, Edwin1 J..t Bognar Sc Co, Inc, 2041 Oliver Bldg, Pittsburgh 22, Pa. Bole. Georg: A,* Engr. Experiment Sta, Ohio State Univ, Coiumbus 10. Ohio Bollinger. Robert H.. 64S Kimball Ave, Westneid. N. J. Boion. David G," 415 Nob Kiii Place. Apt. 3. Ann Arbor. Mich. Bolton. Harry L.. Philadelphia Quarts Co, Public Ledger 31dg, lndecender.ee Sourre. Phiiaceichia c. Pc. 3olc. Leonard H, National Bureau of Standards, Div. 9:3 Conn. Ave. & Van Ness, Washington 23, D. C 3onebrake, Howard P, Aluminum Co. of America. 1 00 Mississippi Valley Trust Bldg, St. Louis. Mo. 3ongiovanni, John C,, Park 31vd,, East Liverpool, Ohio Bonitas, Paul A, 5023 Eighth Ave, N.E, Seattle 5, Wash. Bonk. John A, Coming Glass Works. Fallbrook Plant. Coming. 3onner, Don B, 2149 E. 37th St, Los Angeies 11, Caiii. Bonnot Co. (B. T Bonnet!. Canton. Ohio Bonnot. B. T,,* The Bonnot Co, Canton. Ohio Booth. John F, Hazlehead Hall. Penistone. Nr. Sheffield. Shef field. York. England Booze. M. C,*7 Charles Taylor Sons Co, 3ox 58, Annex Sta, Cincinnati, Ohio Bopp, Harold F,,* 67 Gorton St, Coming, N. Y. Boros. John, 1140 E. Jackson St, Long Beach 5, Calif. Bosch. F. M,, Laboratory Anorganische-Technische & Electro chemie, 22 Plateaustraat, Ghent, Belgium Botfield Refractories Co. (George B. Botfield), Swanson 8c Clymer Sts, Philadelphia 47. Pa. Botfield. George 3, Botfield Refractories, Swanson & Clymer Sts, Philadelphia 47, Pa. Bonder. Norman :M,, Jr, 4820 Roiand Ave, Baltimore 10, Md. Boultbee. Donald (J). 1201 Priestley, Erie, Pa. Bounine. Jean. Strafor-hfaroc-redala. Morocco. N. W. Africa Bourgerie. R. D, Radio Materials Corp, 3323 N. California Ave, Chicago. III. Bovee. Benedict A, Winter Rd, Grant Island. R.R., N.Y, N.Y. Bower. James A, First St, Chester, W. Va. Bowers. Donald J,, 950 Highland Dr, Columbus 14, Ohio Bowes. Urban E,* Owens-Illinois Glass Co, Box 1035-1036, Toledo 1. Ohio Bowman. Donald C, 657 Linden Ave, Apt 1 West. Elgin. 111. Rowman. Eugene D. (J). 351 Hanford St, Columbus. Ohio Bowman. John G, 341 S. Juiiana St, Bedford, ?a. Bowne, Maran S_! Lee Clay products Co, Clearfield. Ky. Boyce. Joseph. Vitro Mfg. Co, 60 Greenway Dr, Pittsburgh. 3oyce. Robert E, Harker Pottery Co, East Liverpool, Ohio 3oyce. Walter A. i'S), 1919 Grant Ave, Philadelphia 15. Pa. Boyd. Frank H, 5. G. Frantz Co, Inc, Box 1138, Trenton, N. J. 414 Boyd. G. M, Locke Dept. General Electric Co, Box 57. Balti more 3. Md. Boyd, John ,t United Feldspar i Minerals Corp, Box M, Spruce Pine, N. C. Boyd, Robert C..*f American Radiator 5: Standard Sanitary Corp, 1541 S. Seventh St, Louisville 8, Ky. Boyles. John P, 323 E. Lincoln Ave, New Castle. Pa Boynton, Claudia G, 7040 Yale Ave, Chicago 21. III. Boynton, Robert S, National Lime Assn, 925 15th St. N.W, Washington 5, D. C. Bozzo, J. G, Pierce Glass Co, Port Allegany, Pa. Brackbili, Charles E, 1413 County Line Rd, Fostoria. Ohio Bracken, A. Lloyd. Jr, 1024 Trout Brook Dr, West Hartiord, Conn. Bradley, Aian L, Oughtibridge Silica Firebrick Co, Ltd, Steet- ley Brick Works, Nr. Worksop. Notts, England Bradley, Charles A, Jr, 21 E. Fourth St, Corning, N*. Y. Bradley, Fer.nimore N. (S), 4308 Winslow PI, Seattle 3, Wash. Bradley, John R,, 46 Maple St, Hornell. N. Y. Bradley, R. S,** A. P. Green Fire Brick Co, Research Dept., Mexico, Mo. Bradwetl, Cyril,! Parkhurst Apts. 2B, Barbara & Marion Sts, Bethlehem. Pa. Brady, Charles P, 3609 N. Gondar Ave, Long 3each 8. Calif. Brady, John G, 316 Munroe Ave. S, Saskatoon. Sask, Canada Brady, T. E, Surface Combustion Corp, 2373 Dorr St, Toledo. Ohio Brain, Douglas G, 1960 Jane St, R. R. 2, Weston, Ont, Canada Bramlett, William ?, Jr,' Cumberland Rd. R. R. 2. Millville, N. J. 5randt, Kristian H,, Box 212, Red Bank. N. J. Brand:. Martha W,, National Glass Budget. 800 Grogan Bldg, Pittsburgh 22, Pa. Brandt, Neiil M, Mellon Institute. 4400 Fifth Ave, Pittsburgh, Pa. Brandt, William O,*1 Gladding, McBean & Co, 2901 Los Feliz Blvd, Los Angeles 39, Calif. Branham. Paul. Dunbar Glass Corp, Dunbar. W. Va. Brant, David G,r Universal-Rundle Corp, Box 300, Red- iar.es, Caiii. Brashares, C. A, 603 Protective Lite Bldg, Birmingham 3, AJa._ Brassneld. Henry C, 309 Villar.ova Rd, Oak Ridge. Tenn. Brauckmnn. Alvin J. (S), 3 Kern Ramble. Austin, Texas Braun Corp. (J. G. Stewart), 2260 E. 15th St, Los Angeies 21, Calif. Brav. A. C,, Western Clay Mfg. Co, Box 176. Hcier.a. Mont Bray, Kenneth J, Wencze! Tiie Co, Trenton, N. J. Braykovich. .A. F,, Box 4367 Station A. San Antonio. Texas Bravton. E. Georgia. Bravton Potteries, Inc, 1430 Coast Blvd. S, Laguna Beach. Caiii. B rarer. Eriand, Elektriska Svctsnings A/B. Gothenburg, Breedlove. James G./ .American Lava Ccrp, Cnattanooga, Tenr, Breeroan, Leonard. Jr./ R. R. 5, Gouvemeur, N. Y. Breene, George A, Industrial Colloids Co, Emlenton. Pa. 3reeze, Lewis K, 467 E. 146th St, Cleveland 10. Ohio Breitwieser. Robert H, S082 Bryant, Denver. Col. Brekke, Trygve, Box 266, Stavanger, Norway Brennan, B. T, Chisholm, Boyd 8t White Co, 610 W. 57th St, Chicago 21. HI. Brennand. Ricardo C. D, Av. Central 7434, Tejipio Recite, Brazil Brenner, Harold M, B. F. Drakenfeld Sc Co, Inc., Wash ington, Pa. Brenner, R. F,* Anchor Hocking Glass Co, Lancaster, Ohio Bretz, Lewis A, 1718 Theodan Dr, Pittsburgh 16, Pa. Brewer, Bob. Mineral Wells Clay Products Co, Mineral Wells, Texas Brewster, Gordon F, East Williamson, N. Y. Brian. Charles, Paper Makers Importing Co, Inc, 44 S. Second St, Easton, Pa. Brian, Dick, 422 Florida Ave, Chester, W. Va. Brian, S. Douglas. Paper Makers Importing Co, Inc, 44 S. Second St, Easton, Pa. Brigham. Ralph V, Jr, Onondaga Pottery Co, 2900 Court St, Syracuse. N. Y. Brinkman. Robert J. (S), 3209 Wayne Ave, Dayton 10. Ohio Bristow, J. S, William Jessop & Sons, Ltd, Brightside Works, Sheffield. England Bristow, Robert H,* 530 Fairlawn Dr, Urbana. 11L Britcher, Gordon. 306 Berkeley Dr, Syracuse 10, N. Y. British Ceramic Society, North Staffordshire Technical Col lege, Stoke-on-Trent, England Britton, Marvin G. (SI, 139 Steuben St, Painted Post. X. Y. Brockway Glas* Co, Inc. (F. B. Hess), Brockway, Pa. Ceramic Bulletin Brooke, Stanley, Oughiibridge Silica Firebrick Co., Ltd., Oughtibridge, Sheffield, England Brooks. Robert H., 4380 Harmon Rd, El Sobrante, Calif. Broomhall, Vincent,* Continental Kilns, Inc., Box 755, East Liverpool, Ohio . Brosius. John P., 403 Emerson Ave., Aspinwall, Pittsburgh 15. Pa. Brown. Donovan P., 420 Curtis Bldg., 2842 W. Grand Blvd., Detroit 2, Mich. Brown, George R.. North American Mfg. Co., 4455 E. "1st it.. Cleveland 5, Ohio >>r. lohn J, Jr./ c/o Moland-Drvsdale Corp., Henderson ville, N. C. Brown, Joseph A,, Baltimore Brick Co., 3200 E. Madison St., Baltimore 5, Md. Brown, Lawrence H,*f Box 632, East Liverpool, Ohio Brown. Leslie, Lenox Inc., Trenton 5, N. J. Brown, Meredith C,, 9500 S. Norwalk Blvd., Los Nietos, Calif. Brown, Raymond G,, Comstock & Wescott, Inc., Box 835, Niagara Falls, N. Y. Brown. Raymond J. (J), 1930 S. Scoville. Berwyn, 111. Brown, Roy VV.. 3S42 Grennocn St.. Houston, Texas Brown, Wilbur F.,* Libbey-Owens-Ford Giass Co., Rossford, Ohio Brown, William E. (S),' School of Ceramics, Rutgers Uni versity, New Brunswick, N. J. Browne, Thomas C.. Alexandria, Pa. Brownell. Wayne E., 126 Horneil St., Hornell, N. Y. Brueggerhoff, Charles (J), Club Americano, N. Rosita. Coahuiia, Mexico Brummer. George M. (S), 965 Sweet Home Rd., Williamsviile 21. N. Y. Brunner, Cedric D., Coors Porcelain Co., Golden. Col. Brmining, Ernest J., Consumers Glass Co., Ltd., Box 210, Sta. B, Montreal, Que., Canada Bruno. Lucien V,, Federal Seaboard Terra Cotta Corp., Perth Amboy, N. J. Brush. George D,f 35 E. Gay St.. Rm. 413. Columbus 15, Ohio 3rutcher. Henry E.. Box 157, Altadena, Calif. Bryan:, Albert D., Standard Silica Coro., Box 407. Ottawa. ,, niBryant, Eugene E,*T Ferro Corp., 4150 East 56th 5t., Cleve land 5. Ohio 3uchan. M. A.. 717 E. Monroe. Mexico. Mo. Buck G.x Co. ,R. A. 31unt), Fort Ave. & Lawrence 3:., Baltimore 30, Md. Buck. Ivan E-. ir_ 300 Greenwood Ave.. R. R.. Cape May, N. J. Buckles, ?aui_ E.,* -131 Water St.. Tiffin. Ohio 3uckner, O. 5.F Bay State Abrasive Products Co., Westboro, Mass. Sudd. Willard H.. Jr., 1309 East Garfield. Glendale 5, Calif. Buehler, 3ert ?.. Box 371, Independence. Ohio 2-Jssem, W. R_, School of Mineral Incustries, State College, Buffalo Pottery. Inc. (R. E. Gould), 25 Hayes Place. Buffalo 10. N. Y. Buktas, Bulent. The Siimerbank. Ankara, Turkey 3uilard. Edward R., B. F. Drakenfeld & Co., Inc., Washing ton, Pa. Bunge. Fred H.. 715 5. La Grange Rd.. La Grange. 111. Bunnell. Lowell A.. 392 E. Lincoln Way. Lisbon. Ohio Burch. Oscar G..* Owens-Illinois Glass Co, Box 1035-1036. Toledo 1, Ohio Burchenal. Charles H., Cambridge Tile Mfg. Co., Box 71, Gncinnati 15. Ohio Burchfiel. B. M..*f 4458 Westmoreland Court. Riverside. Calif. 3urchfield, Paul E., Wyandotte Chemical Corp., Wyandotte, Mich. 3urdick Milton D.F Porcelain & Pottery Section. National Bureau of Standards, Washington 25, D. C. Burdick. Sidney D.. 104 Argonne St., Coming. N. Y. Burgess. 3!andford C..* Box 350. Monticello. Ga. 3urgncr. Arthur J,, Canadian Potteries. Ltd, St. Johns, Que, Canada 3urgnnder, Rafael, Ceramica Ind. "El Aguila" S. A, Av. Morelos 31. Desp. 204. Mexico. D. F,, Mexico Burke. L. Roger, 1203 Peoples Bank Bldg, Pittsburgh 22, Pa. Burkhalter. EdwardF 7219, Interlaaken Dr, Tacoma 9, Wash. Burks. Cecil M,, Jr. (J)F Apt. 2D. 424 Benton St, Joliet. 111. 3urley, Frank N, 520 W. Ricketts St. Kokomo, Ind. Burley, Newton R, 1864 Dresden Rd, Zanesville, Ohio 3ur!ingame. Howard G, California Metal Enameling Co, 6904 . Slauson Ave, Los Angeles 22, Calif. 3urnar.d. Guy M. (Life), Messrs. Johnson, Matthey & Co. Ltd, /8. Hatton Garden, London E. C. i. England Burnett, W. A, Calicut. Malabar, S. India Burns. Frederick I-- 1777 Norwood Blvd, Zanesville, Ohio Vol. 31, No. 10 (1952) Burns, Henry K, Jr, 1620 W'averland Dr, Macon, Ga. Burns, R. S, Armco Steel Corp, Research Library, Middle- town, Ohio Burriss, William K, 5017 Drexel Blvd, Chicago 15. III. Burroughs, F. H, Box 1329, Trenton 7, N. J. Burton, Howard 3, Jr, lo 13 Arlington Ave, St. Paul 6, Minn. Burton, W. A, 803 E. Fourth St, Mt. Pleasant, Texas Burwinkel. Lawrence G, Jr, Pennsylvania Glass Sand Corp, 140 Stanwix St.. Pittsburgh 22. Pa. Bush, Edward A. (Si. 241 Sherman Ave, Vandergrift, Pa. Bush. James W,T 2531 Brownsville Rd, Pittsburgh 10. Pa. Bushong, R. M,, National Carbon Co, Tiffin & Town Sts, Fostoria. Ohio Busteed, Donald J.F 77 South St, Westboro. Mass. Butcher, L. H, Co. (Everett S. Bissell), 3628 E. Olympic Blvd-, Los Angeles 23, Calif. Butcher, William T, "Woodgarth," Stamford Brook Ave, London W. 6, England Butkovich, Edward M, 9000 Buffalo Ave, Chicago 17, 111. Butler, C. Edward, Jr.,T Line Material Co, Jeffery-DeWitt Plant, Kenova, W. Va. Butler, F. W, Akron Porcelain Co, Akron 14, Ohio Butler, John, Ossipee, N. H. Butler, Mike W,, Box 816. Austin 64, Texas Butler. Thomas J, Jr, Box 279, Austin 2, Texas Buttle, Robert L, 490 Carr St, Denver 15. Col. Buzard, Fred T,, Bell. Pine & High Sts, Plymouth. Ohio Byrns, Alva C, Chemical Div, Kaiser Aluminum .*< Chemical Corp, 1924 Broadway, Oakland 12, Calii. C C, Jerman Johannsen, c/o Cristai Yungay, Weir, Scott & Cia. Casilla 73-D, Santiago, Chile Cabanie, Lucien, E Japv Freres. Fesches-Le-Cnatel, (Doubs) France Cable. John A, 1011 22nd St. N. E, Canton 4. Ohio Cable. Margaret.* 1520 San Miguel Ave, Santa Barbara, Calif. Cable. Stephen J, 811 23th St. N. E, Canton. Ohio Cabot Carbon Co. ^Arthur L. Hall), Cabot Minerals Div, Willsboro. N. Y. Cahoon, G. J,* Knox Porcelain Corp, Knoxville 11, Tenn. Cahoon. Harold P. (S), 1555 c, 3350 South. Sal; Lake City, Utah Cahoon, John B, Jr, 4650 E. Thomas Rd, Phoenix. Ariz. Caito, A. M, Basic Refractories, Inc, Maple Grove, Ohio Cala, Charles F,, 144 Hoover Rd, Rochester 17. N. Y. Calderwood. F. Wayne. 227 N. Sneidon Ave, Ames. Iowa Caldwell, Helen, Administration Bldg, 1429 W. Seventh. Bur lington. Iowa Caldwell, Smiley, Jr, Rolland Glass Co, Garksburg, W. Va. Caldwell. William D,T Perfection Stove Co, 1135 Ivanhoe Rd, Cleveland. Ohio Callahan, H. D,*f U. S. Quarry Tile Co, East Sparta, Ohio Callinan. Edward E..*T 24 E. Fornance St, Norristown. Pa. Cambridge Glass Co, Cambridge. Ohio Cameron. Robert A, Box 195. Corning, N. Y. Campbell. C. V, 5075 W. Fifth St, Brookivn Heights. Ohio Campbell, Edward S, Northwestern Glass Co, 5301 E. Mar ginal Wav, Seattle 4. Wash. Campbell. G. Donald. Pittsburgh Plate Glass Co, Wks. --50. Shelbyville. Ind. Campbell, Ian, California Institute of Technology, Pasadena 4, Calif. Campbell, R. A. (J), The Lodge. Kilmar, Que, Canada Campbell, Robert M,,*t Alfred. N. Y. Campbell, Tom W, Box 255. Poland, Ohio Campbell. Van E, 363 Highland Ave, Wadsworth, Ohio Campos. F. Torres, Puerto Rico Gay Products Co, Box 4729, San Juan, Puerto Rico Canadian Ceramic Society, Miss L. C. Keith, 49 Turner Rd, Toronto 10. Ont, Canada Canfield, J. J,* 2909 Orlando Dr, Middletown 20. Ohio Canning, Robert, 202 Fox Chapel Rd, Pittsburgh 15, Pa. Capellman. John J, 1118 Highland St, Tarenturn 1, Pa, Capps, Hubert. 1108 W. Third St, Coffeyville. Kan. Capps, Webster. 5914 Walton Rd, 3ethesda 14. Md. Carborandnm Co. CH. C. Martin), Niagara Falls. N. Y. Carder, Frederick* (Honorary), Steuben Div, Coming Glass Works, Coming; N. Y. Camy, J. Sheldon, Dept, of Design, University of Kansas. Lawrence, Kan. Carl, John E. (J). Corning Glass Works, Box 544, Coming, N. Y. Carlen, Solve, Bolidens Gruvaktiebolag, Centrallaboratoriet, Skelleftenhamn. Sweden Carlson, C. W,, United States Glass Co, Tiffin 15, Ohio Carlson. Joseph A, 2595 27th Ave, San Francisco 16, Calif. 415 Carlson, William G.T (J), 2-A Parkline Court Apts., Parkline Dr., Pittsburgh 27, Pa. Cariyle, Edward :C., Box 128, Ironton, Ohio Carnes, Kenneth C., 2643 Wesleyan Drive, Toledo 14, Ohio Carnes, Samuel J., Camark Pottery Co., Camden. Ark. Caro, Robert, Hedi Schoop Art Creations, Box 384. North Hollywood. Calii. Caron, James J. (Si. 330'/: S. Hague Avc.. Columbus. Ohio Carothers, Harry S., H. C. Spinks Clay Co., 1UOO Hirst Na tional Bank Bldg., Cincinnati 2, Ohio Carothers, R. B,* H. C. Spinks Clav Co., Inc.. Box 829, Paris. Tenn. Carothers, Richard B., Jr., Box 829, Paris. Tenn. Carothers, T. E., 1700 Devereaux Dr.. Burlingame. Calif. Carpenter, F. Scott, Jr., Godtrev L. Cabot, Inc., 77 Franklin St.. Boston. Mass. Carr, R. E., Pennsylvania Wire Glass Co., Dunbar, Pa. Carr, Robert E. (J), 414 N. High St.. Lancaster, Ohio Carr-LowTey Glass Co. (Norman R. Beck), Baltimore 3, Md. Carroll, Joseph, Physics Dept., Marquette University, 1131 W. Wisconsin Ave., Milwaukee 3, Wis. Carroll, William F. (J), 2080 Monte Vista, Pasadena 8, Calif. Carruthers, John L,** Lord Hall, Ohio State L'niv., Columbus 10, Ohio Carter, F. B,,* Tiffin 12. Ohio Carter, Herbert D,*t 3351 Dorchester Rd., Shaker Heights 20, Ohio Carter, J. Guiid, 190 W. State St., Trenton, N. J. Cartwright, loseph B,, Homer Laughlin China Co.. Newell. W. Va. Casamo, Charles C., Syivania Electric Products, inc., Em porium, Pa. Case, V. B., Paper Makers Importing Co., I tic., 44 S. Second St.. Easton, Pa. Csse. W. A, & Son Mfg. Co. (Willard G. Youngj, Robinson. Castany, Charles I. (S), 630 W. Winnipeg. San Antonio 11. Texas Casterline. Daie R. (S), 243 Imperial Ave.. Painted Post. N. Y. Cather, Heien F, Box 2372, Laguna Beach, Calif. Caton, Miiton W., 22490 Nevada Ave.. East Detroit, Mich. Cauthorn. James E. (S). R. R. 4. Mexico, Mo. Cavanaugh, D. J.,' 822 32nd St., Parkersburg, W. Va. Cawood, Richard L.. East Liverpool, Ohio Cayford, James M..- Glascote Products, Inc., 20900 St. Clair Ave., Cleveland 17. Ohio Cecil. Paul S-. c/o Seanorcel Metals, Inc., 28-20 Borden Ave.. Long Island City 1. N. Y. Central Silica Coi (E. C. Sawver), 806 Market St., Zanesville. Ohio Ceramic Assn, of Japan, Yogyo Kyokwai. 7, Shiba-NishikuboSaKuragawacho. Minato-ku. Tokyo. Japan Ceramic Color & Chemical Mfg. Co. (W. F. Wenning), Box -9/, New Brighton, Pa. Cermak, Frank,* 1342 Union St., Schenectady 8, N. Y. Cermak. Kenneth 'W., 818 Rankin Ave., Schenectady 8. N. Y. Cemy, Joseph J., 5226-28 W. 26th St.. Chicago 50 (Gcero), 111. Cenilli, Nicholas F. (S`i, 267 Upson Lane. University Heights, -New Brunswick. N. J. je^ron> Cleveland Magnesite & Refractory Co, Ltd.. Normanby Brickworks, Normanby, Middlesbrough, York. England Chamberlain. James M. W., Box 350, Akron 9, Ohio Chambers, Gordon H, 18 W. Chelten Ave., Philadelphia 44, Chambers, J. Fred, National Gypsum Co.. Luckey, Ohio Spark Plug Co, Ceramic Div. (Frank H. Riddle), aa,5 Butler Ave, Detroit 11. Mich. Chandler, Keith B,, 3160 W. 106th St, Cleveland. Ohio L--IJnt{er, L. W, Standard Lime & Stone Co, Millville. W. Va. Chapman, Frank E,, Jr. (S), Box 564. Alfred. N. Y. Charbonnier, William P, Walsh Refractories Corp, 101 Ferry St, St. Louis 7, Mo. Charland, Tel I-- c/o Air rorce Project, Box 722. Alfred. N. Y. Chase, Dana,* 360 N. Michigan Ave, Chicago 1, 111. Chase, Harry K, 4040 Lakeshore Ave, Oakland, Calif. Chattanooga Glass Co. (Joe G. Venable), Chattanooga 10. Tenn. Chatterjee, Akhil Chandra, Messrs. Burn & Co. Ltd, Raniganj. Dtst, Burdwan, India Cnaumeil, Frederic, Verreries de Bagneaux et Appert Ferres. Bagneaux s/Loing, Seine et Marne, France Chesler, Isidor, 710 E. I4th St, New York 9. N. Y. Chester, A. E, Promat Div, Poor & Co, 851 S. Market St, Waukegan, III. 41G Chesters, John H, LJnited Steei Co, Ltd, Research S: De velopment Dept, "swinden House," Moorgate, Rotherham, York, England Chicago Hardware Foundry Co. (Robert J. Young), North Chicago, 111. Chicago Pottery Co. (J. S. Clifford), 1920 Clybourn Ave., Chicago 14, 111. Chicago Vitreons Enamel Product Co. (William Hogenson), 1427 S. 55th Court, Cicero 50, 111. Chilcote. Joseph H, 1907 16th St. N, Arlington. Va. Child, J. L, Hancock Brick & Tile Co, Box 59, Findlay, Ohio Childs, Clayton G. (S). Box 268. Alfred, N. Y. Childs. Edwin E,, Jr. (S), Owings Mills, Md. Childs, H. \V, United Feldspar & Minerals Corp, West Paris, Me. Ching. Tung Rey (Si, 1008 W. Oregon. Urbana. 111. Chiochctti, Vincent E. J. (S). 492 Sumner St, E. Boston 20, Mass. Chisholm, Boyd 3c White Co. (B. T. Brennan), 610 W. 57th St, Chicago 21, 111. Chiu. Hung-Wen. 204 Hudson Ave, Newark, Ohio Chormann. O. I, 195 Gregory Hill Rd, Rochester, N. Y. Chothia, B. S. (J), Wadia Bldg, 137 Queen's Rd, Bombay, India Christensen. Carl J, College of Mines & Mineral Industries, Univ. of Utah, Salt Lake City, Utah Christensen, Chr, Den Kongelige Porcelainsfabrik & Fa- jancefabriken Aluminia A/5, Smallegaac 45, Copenhagen F, Denmark Christie, Leonard D,, Jr.. 543 Sound Beach Ave, Old Greenwich, Conn. Christman, Brian B.. 25 Eggert Ave, Metuchen. N. J. Christman, C. E, Federal Enameling & Stamping Co, Pitts burgh, Pa. Christman. H. M..* 1023 Roosevelt. N. E.. Massiilon. Ohio Chu, Gordon P. K. (S), Ceramic Dept, State College, Pa. Chun. Lee (J), 230 Prince Edward Rd, Kowloon, Hongkong, China Chung, Heung-Sung, Messrs. Yick Lee, 128 Bonham Strand East. Hong Kong. China Chute. Harold W, 31 N. University St, Redlands, Calif. Cichowski. Val J, Grand Enameling Co, Div. of Grand Industries, Inc, 2333 E. 67th St, Cleveland. Ohio Ciprari. John L. (Si, Box 1040. Ga. Tech.. Atlanta. Ga. Clare, Rcbert L,** 212 Rector St.. Perth Amboy, N. T. Clark. Alec W, Beatson, C'.ark & Co, Ltd, Rotherham. England Clark. C. Burton. 113 DeArment Parkway, Pittsburgh 28. Pa. Clark, Horace N, Refractory it Insulation Corp, 120 Wall St, New York 3, X. Y. Clark, John D,T 656 Lindley Rd, Glenside. Pa. Clark. Keith R. (J). 238 "E" Fair Oaks. South Pasadena. Calii. Clark, Richard E,T 913 Lindbergh Ave, Zanesville, Ohio Clark, Roland J, Precision Grinding Wheel Co, Inc, 8301 Torresdaie Ave, Philadelphia 36. Pa. Dark, Tnaddeus J. E, 113 Eimore Ave, Trenton 9. N. T. Qarke, Ford K, Philco Corp, Cnurch Rd, Lansdale. Pa. Claus. Karl M, 298 Main St, Matawan. N. J. Clavpoole, Stewart A, 37 Clark St, Painted Post. N. Y. Claycraft Co. (Phillip W. Tefft), Ecx 866. Columbus 16. Ohio Cleeves, George A, 198 High St, Reading, Mass. Clemens. August. Jr, 205 E. Gittings Ave, Baltimore 12, Md Clemens. Eugene C,* Cannelton Sewer Pipe Co, Cannelton, Ind. Clements, J. A, Shaws Glazed Brick Co, Ltd, Darwen, Lancashire. England Cleveland Museum of Art, William M. Milliken, Cleveland 6. Ohio Cleveland, Theodore X, Sixth & Grayson Sts, Berkeley 10, Calif. Cleverly, Robert B, American Vitrified Products Co, Box 364, Sta. A. East Livertxsol. Ohio Gews. Francis H, 3ritish Ceramic Research Assn, Queens Rd. Penkhull, Stoke-on-Trent. England Clifford. J. S, Chicago Pottery Co, 1920 Clybourn Ave, Chicago 14. III. Clift, Robert E, Jr, Cove Rd, Stonington, Conn. Cline, I. R, Western Brick Co, Danville. 111. Cline. Robert W,t 377 Main St, East Aurora, N. Y. Gingan, J. R. T, Niles Fire Brick Co, 165 E. Park Ave, Niles, Ohio Close, Paul, Box 1035-6, Toledo, Ohio Gough. Philip J, National Research Corp, 70 Memorial Dr, Cambridge 42. Mass. Coates. Bill. Coates Co, Box 935, Austin. Texas Coble, Robert L. (S'. Room 2-067, Massachusetts Institute of Technology, Cambridge. Mass. Cocanougher, Robert S, 346 Claremont Ave, Jersev City 3. n. Ceramic Bulletin Coelho. Emygdio. Rua Pedro de Carvalho No. 724, Meyer. Rio de Janeiro. Brazil Coen. Bernard. Woodbridge Sanitary Pottery Corp., 500 Green St., Woodbridge, N. J. Conecn, W illiam \V.,t 1024 Boulevard Ave., Union. N. J. Coder. L. Wailace, Battelie Memorial Institute, 505 King Ave, Columbus 1. Ohio Coffman, William N, Keystone Abrasive Wheel Co., Carne- gie. Pa. _ - --n. Saul, Davidson Brick Co., 4701 Floral Dr., Los Angeles Cali:. Cone.-., Aaron, Willamina, Ore. Cohen, Arthur E., Sylvania Electric Products, Inc., Cottage Place, Mineola, N. Y. Cohen, Bernard. 2902 Jennings Rd, Kensington, Md. Colcord, John E. (S), Box BB. Alfred, N. Y. Cole, G. Percy, Dominion Glass Co., Ltd., Box 190, Montreal, Que.. Canada Cole, Sandford S,*t Titanium Alloy Div., National Lead Co., Box 58, South Amboyj N. J. Coleman, Caruthers A., 113 Cheapside, Lexington, Ky. Coleman, J. C., 3746 Mapleway Dr., Toledo 14, Ohio Coleman, Robert L.,T 467 Dogwood, Park Forest, Chicago Heights. 111. Coleman. Thomas B.. 635 Tarboro St., Rocky Mount. N._G Collins. Paul F.,T Microcast Div, Austena! Labs, Inc., 7001 S. Chicago Ave, Chicago 37, 111. Collins, Robert (J). 151 Hackensack St, East Rutherford, N. J. Collins, William G,? Johns Manville Corp, Waukegan, 111. Colonial Insulator Co. (R. W. Hemphill. Sr.), 973 Grant St, Akron 11. Ohio Colosky, Beniamin P. (S). 137 Ford Ave, Fords, N. J. Colucci, George M, 2459 S. Seneca Ave, Alliance, Ohio Columbia Fire Brick Co. (M. L. Hamaker), First National Bank Bldg, Canton 2, Ohio Columbia-Southern Chemical Corp. (R. W. Miiler), Barber ton, Ohio Comeforo, J. E,, Box 141, Norris, Tenn. Comer, Richard L. (S'), R. R. 1. Chebanse. 111. Commercial Decal, Inc. (Alfred Duhrssen), East Liverpool. Ohio Commereialores, Inc. (Henry S. Doty), 39 Cortlandt St, New York 7, N. Y. Commons. Charles H, Jr,** c/o Illinois Electrical Porcelain Co, Macomo. 111. Compagr.ucci. Julius P, The Bay Ridge Specialty Co, Inc, Trenton 6. S'. J. Compendia Panlista de Miseracao, S. A. (Eduardo C. Simon- sen), Caixa Postal 3008, Sao Paulo. Brazil Compania Mexicana De Refractarios. A. P. Green, S. A. (H. Fetter), Tlalnepantla, Apartado, Postal 33, Mexico City, Mexico " Conard, John B,, 600 Hawthorne Lane. Mansfieid, Ohio Condon. Edward U, 140 High Rd, Coming. N. Y. Cone. Carroll. 1387 Virginia Ave, Columbus 12. Chio Conn. Willi' M.. 6312 Indiana Ave., Kansas Gty 5, Mo. Connell. George A, Pacific Coast Borax Co, Box 9128 Station ``S." Los Angeles 5. Calif. Connelly, Daniel S, 2801 N. Park Bivd, Cleveland Heights 18. Ohio Conover. Raymond C,f Gladding. McBean 4 Co, 2901 Los Feliz Elvd, Lo-- Angeles 39. Calif. Conrad. Charles E, Jr. :(J), Libbey-Owens-Ford Glass Co, 1701 E. Broadway, Toledo 5, Ohio Conrad. Keith. Owens Illinois Glass Co, 1700 X. Westwood. Toledo. Ohio Conroe. Barden A. (S), Box FF. Alfred. N. Y. Consolidated Feldspar Corp, (M. J. McHugh, Jr.), 1403 Trenton Trust Bldg, Trenton 8, N. J. Consolidated Glass Works, Ltd, (I. Donen), Box 562, Germiston. Transvaal, South Africa Constans, Eldon G, 305 E. 11th Ave, Apt 1, Columbus 1, Ohio Consumers Glass Co, Ltd, (E. J. Brunning), Box 210, Sta. B. Montreal. Que, Canada Contardi. William A.3 45; Cnester Circle. New Brunswick. N. J. Cook Mfg. Co. (Edgar H. Freeman), Box 157, Walnut. Calii. Cook, Eugene M, 509 Broadlawn Terrace, Vineland, N. J. Cook. Herman L,* 1555 Beardsley Ave, Muskegon, Mich. Cook. Ralph L,* 204 Ceramics Bldg, University of Illinois, Urbar.a, 111. Cook. W. Howard. Box 131, Norris. Tenn. Cooke, David C.f (J), 25 Chestnut St, Haddonneld. N. J. Cooke. Robert 5, Crane Steeiware. Ltd, Industrial Centre -3. Quebec. Que, Canada Cooke, William C, Blue Ridge Glass Corp, Kingsport, Tenn. Coombs. W. M, Owens-Illinois Glass Co, Bridgeton Plant No. 14, Bridgeton, N. J. Vol. 31, No. 10 (1052) Cooper, Walter W, Dow Chemical Co, Midland, Mich. Cooper, W'illiam G, 2716 Eldorado St, Apt. D, Torrance. Calif. Coors Porcelain Co. (H. W. Ryland), Golden, Col. Cope. William E, Barclay Machine, Inc, Box 146, Sebring, Ohio Copping J. W,, Porcelain Div, Canadian General Elec. Co, Ltd, Park St, Peterborough, Ont, Canada Corbett Keith T. (S), 22-F Vetville, Raleigh, X. C. Corbett, Paul M, Dept, of Metallurgical Engr, University of Toronto. Toronto, Ont, Canada Cordes, John E,, 2017 Sheridan Ave. S,, Minneapolis 5. Minn. Corhart Refractories Co, Inc. (Frederick S. Thompson), 16th & Lee Sts, Louisville 10, Ky. Cornelius, Y. R, 3125 E. Burnside St, Portland, Ore. Corning Glass Works (J. T. Littleton), Corning, N. Y. Cornish, Frank L, Corning Glass Works, Charleroi, Pa. Comubert, Raymond, 15 Place Carnot, Nancy (Meurthe et Moselle), France Cornwell, George L, 171 Eiseman, Kenmore 17, N. Y. Corson, Robert tS), Box 291, Alfred. N. Y. Corwin. Rudolph ,, Argonne National Lab, Eox 5207, Chicago 80. 111. Cote. A. U, Cooksville Co, Ltd, Cooksville, Ont, Canada Cotton, Nigel, Elijah Cotton Ltd, Nelson Pottery, Hanley, Stoke-on-Trent. Stafford. England Cotton. Robert A, General Reiractories Co, 1180 E. Broad St, Elizabeth. N. J. Couch, Albert H,I Libbey-Owens-Ford Glass Co, 1701 E. Broadway, Toledo 5, Ohio Coughanour. Leslie W, 5515 Oaktr.on: Ave, Eethesda 14. Md. Counts, Jack E, 1547 Farnsworth Dr, Charleston. W. Ya. Counts, William E, 323 E. Kearsley, Flint, Mich. Courier, R. F, Globar Div, Carborundum Co, Niagara Falls, N. Y. Courtney, Scott J, B. F. Drakenfeld & Co, 45--17 Park Place, New York 7, X. Y. Courtright. John H. (S). Eox 257, Alfred, X. Y. Covan, H. E,, 400 20th Ave, Columbus. Ohio Cowan. J. G, "Roselands," Billington,- Haughton, Stafford, England Cowan. R. Guy,* Onondaga Pottery Co, Syracuse, X. Y. Cowan. Robert E. tS). 903 W. Green St, Urbana. III. Cowell. J. Robert. Jr, Woodville Lime Products Co, 2140 jtfferson Ave, Toledo 2. Ohio Cowling, Kenneth W,, 79 Norwood Rd, Sheffield 5. England Cox. Edwin H. (J). 2000 Pleasantdale Rd, Apt. 6, Cleveland 9. Ohio Cox, John E. (S), 812 N. Madison 5t,, Bloomington, 111. Cox, Paul E,* 520 N. Tenth St, Baton Rouge 8, La. Cox. Samuel F,, Pittsburgh Plate Glass Co, Research Lab, Creighton, Pa. Cox. Shaun M,, J. A. Jobiing 4 Co_ Ltd, Wear Glass Works. Sunderland, Durham, England Coy. John J, 221 Cedric Ave, York Township, Toronto, Ont, Canada Craft. R. S, Findlay Clay Products Co, Washington, Pa. Craig. Bruce G, 2706 X. 40th. Milwaukee, Wis. Craig, David M,, Jr, 2300 Grant Bldg, Pittsburgh, Pa. Craig. James E.. 1055 Allison Ave, Washington. Pa. Craig. James W.. Canadian Refractories. Ltd, 1050 Canada Cement Bldg, Montreal 2, Que, Canada Craig, John D, Jr, Pennsylvania Pulverizing Co, 1418 Tren ton Trust Bldg, Trenton 8, N. J. Cramer, W. E,*r Industrial Ceramic Products, Inc, 965 W. Fifth Ave, Columbus 12. Ohio Crandall. Eugene R,,* 238 Gulf St, Milford. Conn. Crandall. James R.J 4514 Chestnut St, Bethesda 14, Md. Crandall, William B,, Box 707, Alfred, N. Y. Crandon, A. S, American Window Glass Co, Fanners Bank Bldg, Pittsburgh 22, Pa. Crane Co, Chattanooga. Tenn. Crane, Robert F, Country Club Estates, Kittanning, Pa. Crawford, George E,*T 221 Sumner Ave, New Castle. Pa. Crawford. George S, Resources Utilization Branch, Dept, of Natural Resources, Regina. Sask, Canada Crawford, J. C, Jr, Johns-Manville Sales Corp, 22 E. 40th St, New York 16, N. Y. Crawford. J. L,*T Walsh Refractories Corp, 101 Ferry St, St Louis 7. Mo. Creed, Michael B, 63 Marvel Rd, New Haven. Conn. Creson, Walter F, Babcock 4 Wilcox Co, 1513 National City Bank Bldg, Cleveland 14, Ohio Cress. William C, Carolina Ceramics, Inc, R. R. 3, Columbia. S. C. Cressy, Morton. Hartford-Empire Co, 333 Homestead Ave, Hartford 2. Conn. Crider. Paul H.. 342 X. Maple St, Ottawa. Ohio 417 S. A. Cristalerias Del Uruguay >. Francisco J. Gercar), Comercio 1491, Montevideo. Uruguay Crockett. William E.. 1215 N. Arlington Ave., Indianapolis. Ind. Cronin China Co., Minerva. Ohio Cronin, David I.. Univis Optical Corn.. Box 717, Guayama, Puerto Rico Cronin, Leo J, 6 MacArthur Rd,, Natick. Mass. Cronin, Neil E, Cronin China Co.. Mir.erva, Ohio Cronin, W. Kress, Minerva, Ohio Croninger. George J, Albert J. Wahl. Inc.. Brocton. N. Y. Cronn, Eduard, Steingutiabrik Schwarzwald, G.M.3.H., Hornberg (Schwarzwaldbahn i. Germany Crook, Charles E., Lus Angeles Chemical Co., 1960 Santa Fe Ave., Los Angeles 21, Calif. Crookston. James A..* 12 Alton Dr.. R. R. 9, Pittsburgh 34. Pa. Crookarille China Co. (Harry J. Bennett), Crooksville. Ohio Croom, Milton M., 201`/t Groveland Ave., Raleigh, N. C. Crosby, Donald P. (J), Harbison-Walker Refractories Co., Fulton, Mo. Croskey, Carl D.. 2061 Morrow Ave.. Schenectady 9. N. Y. Crossan. \V. A.. The Metropolitan Brick. Inc.. 1017 Renkert Bldg.. Canton 2. Ohio Crouley Machine Co. (William J. Karris), Trenton 9. N. J. Crouchley. George E. (J). Lamp Dept.. General Electric Co., Glass Technology Lab., 1133 E. 132nd St.. Cleveland, Ohio Crowley, Henry L.. 1 Central Ave., West Orange, N. J. Cruiksnank. C. L., Great Lakes Foundry Sand Co., 720 United Artists Bldg., Detroit 26. Mich. Crnnden Martin Mfg. Co. (E: A. Schwarz). 760 S. Second St., St. Louis 2, Mo. Cummings, Mary B., Mary B. Cummings Studio, 33 Morton St.. New York 14, N. Y. Cummins, Arthur B.. Cedar Crest Rd, Bound Brook, N. J. Cummins. Lee Richard. 1296 W. 71st St. Terrace, Kansas City. Mo. Cummins. Robert K., General Electric Co., 1133 E. 152nd St. Cleveland 10, Ohio Cunliffe, J. A.. 266 Seventh St.. Medicine Hat. Alta. Canada Cunningham. Eugene E_ Greenfield Ave, R. R. 2, Newark, Ohio Cunningham. Robert J.. 673 Maole Ave.. Newark. Ohio Curcio, Anthony L., 21 Church St.. Bound Brook, N. J. Curran, Edward, Engineering, Ltd., (D. Rvan), Cardiff, Wales Curran, Martin T. (S). Box 562. Alfred. N. Y. Curran. Robert/ 75-03 33th Ave.. Jackson Heights 72. N. Y. Currier, Arthur E.. Gladding. McBean and Co., 2901 Los Feiiz Blvd., Los Angeles 39. Calif. Curtis. .A B., Johns-Manville Corp., 1530 Guild Hall Bldg., 45 Prospect Ave., N. W.. Cleveland 15. Ohio Curtis. Carl E./ 404 W. Vanderbilt Dr.. Oak Ridge. Tenn. Curtis. E. deF," Conestoga Pottery Co., Conestoga Rd.. Wayne. Pa. Curts, R. M., American Potash i Chemical Corp., 122 E. 42nd St, New York 17. N. Y. Cushman, Donald S, Innis, Speiden & Co, 117 Liberty St., New York 6, N. Y. Cuthill, John R,, Enameled Metals Section, National Bureau of Standards, Washington 25, D. C. Cutler, Ivan B, University of Utah, Salt Lake City 1, Utah Czamecki, Kamil 8, 73 Queen's Gate. London. S. W. 7. England Czechoslovak Ceramic and Glass Society. R. Barta, Praha XIX, Technicka ul.c. 5. Czechoslovakia Czoigos, Edmund P, 4089 E. 123 St, Cleveland. Ohio D D'Adrian, Vincent L. D,, 7823 Kenridge Lane, Shrewsbury 19, Mo. Dager, Probert W,*t 14743 Morrison St, Van Nuys, Calif. Dailey, E.W, 14504 Euclid Ave, East Cleveland 12, Ohio Dalton, Robert H, 234 Delevan Ave, Corning, N. Y. Daly, Howard J, Jr. (S). 920 James Ave, Niagara Falls. N. Y. Danielson. R. R..*t Metal 5c Thermit Corp, Carteret, N. J. Danlcs, William H, 216 Mississippi Ave, Crystal City, Mo. Darby, George M.. 61 Washington Ave, Westport. Conn. Darrah. W. A, 901 N. Oak Park Blvd, Oak Park, III. Das Gupta. A. K,, Solar Mfg. Corp, 2903 E. Slauson, Hunting- ton Park, Caiif. Daumke, Arthur H, 445! N. California Ave, Chicago 25, 111. Dauwalter. A. C, W. S. Dickey Clay Mfg. Co, 607 Commerce Trust Building. Kansas City 6, Mo. Davey, Earl R, Canadian Ohio Brass Co, Ltd, Niagara Falls, Ont, Canada Davey. Frederick K, Ceramics Dept, Rutgers University, New Brunswick, N. J. 41S Davidson. Martin J./ 1025 E. 14th St, Brooklyn 30, N. Y. 9 Davies, Chester A./ Park Lake Ave, Titusville,_ N. J. fl Davies, Edward G, Dominion Glass Co, Ltd, Wallaceburg, 9 Ont, Canada 9 Davis Fire Brick Co. (D. D. Davis), Oak Hill, Ohio 9 Davis, D. D, Davis Fire Brick Co, Oak Hill, Ohio. 9 Davis. Earl K, Fourth Section Rd, Brockport, N. Y. 9 Davis, Harry E," Universal Potteries, Inc, Cambridge..9 Ohio 9 Davis, H. M, Mineral Industries Bldg, State College, Pa. 9 Davis, James K,, 211 Walnut St, Elmira, N. Y. 9 Davis, N. B, Rm. 512, 140 Wellington St, Ottawa, Ont, 9 Canada 9 Davis, Sam H, Jr, 808 N. Howard. Robinson. 111. t 9 Davis, Spencer L, Ceramics Monthly, 3494 N. High St, Colura- 9 bus 14, Ohio 9 Davison, Albert W, Owens-Corning Fiberglas Corp, Newark, 9 Ohio 9 Day, Arthur L. (Honorary). 9113 Old Georgetown Rd, 9 Bethesda 14, Md. 9 Dav, Charles M, 796 Arcade Bldg, 812 Olive St, St. Louis, 9 Mo. Day, Frank, Jr, Coming Glass Works, Corning, N. Y. 1 Day, Jack F./ 835 Forest Ave, Zanesville,Ohio 3 Day. Ralph K.."T Libbev-Owens-Ford Glass Co, 1701 E. Broadway, Toledo 5, Olrio v Day, Robert B./ State Rd. 340 W,,Brazil. Ind. Deal, Sam id/ (S), 1219 Bonham, Amarillo, Texas Dear, Paul S,*t Box 205. Blacksburg, Va. a j J Debenham, William S./ United State: Steel Cc, 25 William J Penn Place, Pittsburgh 30, Pa. Decker, Edward L. (SI, Box C C. Alfred. N. Y. Dedouch. J. A, 910 Keystone Ave, River Forest. 111. . i ] Deeds, C. L, Komer Laughlin ChinaCo, Newell, W. Va. ; Deeth, H. R, American Nepheiine Corp,Lakeneld, Ont, -f Canada * de Felice, Ralph, 7 Bavside Dr, Great Neck, Long Island, N. Y. Deignan, Charles J./ 120 N. Everett Ave, Columbus, Ohio Delahoy, David L, 8610 Bollier Ave, Niagara Falls. N. Y. rie Leeuw. Peter. Central Post Office Box 323. Tokyo. Japan Delgado, Cyril B, 55 W. 42nd St, New York 18. N. Y. DeLong, Hermon W, III, 67 Main St, Dansville, N. Y. . 1 j Demaison. R. T, Quivlev Co, Inc, 527 Fifth Ave, New York j 17, N. Y. Demarest. W. G, Clay Products Assn, of the Southwest. 619 Littlefield Bldg, Austin, Texas De.Maria. Vincent C, 10 Teamster Lane, Levittown. N. Y. Demongeot. Henri, Interkiln Corp, 413 Lexington Ave, New York 17, N. Y. Demuth Glass Works (H. A. Julian), Box 629, Parkersburg, W. Va. Deneen, W. F, North Carolina reldspar Corp, Erwin, Tenn. Denison Engineering Co, (W. C. Denison), 1160 Dublin Rd, Coiumbus 16, Ohio Denison, George \V,,* Box 1776. Cleveland 5. Ohio Denison, Norman E, Ohio Clay Co, Box 1776, Cleveland 3. Ohio Denison. W. C, Denison Engineering Co, 1160 Dublin Rd., Columbus 16, Ohio Den Kongelige Porcelsinsfsbrik A Fajaneefabriken Alnzainia A. S. (Chr. Christensen), SmaJlegade 45, Copenhagen F, Denmark Denman, Cedric E, Great Bend Brick 5t Tile Co, Inc, Box 53. Great Bend, Kan. Denny. Katherine. 1407 E. 45th. Seattle 5. Wash. deProsse. Victor A, 702 Gilbert St, Apt. 4. Takoma Park. Md. DeRemer, John W./ 501 Reed Drive. M. R. 1, New Kensington, Pa. Derge. Gerhard, Carnegie Institute of Technology, Pitts burgh 13. Pa. Deringer, W\ A./ A. O. Smith Corp, 3533 N. 27th St, Mil waukee. Wis. deRoux. Juan R.fJ). Box 1486. Panama. Rep. of Panama Dcsaix. Herbert A./ 1332 Huntington Ave, Huntington, W. Va. Desjardins. Gregory T,, Foster, Ky. Detamore. Walter A, Barium Reduction Corp, South Charles ton 3, W. Va. Deurvorst, F. B. M,, Het Zonnehuis. Terborg. Holland Deutch, Eugene, 12 W. Maple St, Chicago 10. 111. Deutsche Glastechnische Gesellschaft. H. Maurach, Unter- mainkai 12, Frankfurt A. M,, Germany Deutsche Keramische Gesellschaft, Mr. Knauf, Poppelsdorferallee 15, Bonn, Germany Deutscher. Jerome S,' (J). R. R. 3. Box 73D Phoenix. Ariz. DeVilbisa Co. (E. F. Frey). Toiedo I, Ohio DeVoe, Charles F, 38 W. Fourth St, Coming, N. Y. Devol. Lee. 1917 Plvers Mill Rd, Silver Spring, Md. Ceramic Bulletin Dew, Rober: J.. Jr., c/o Research Dept., American Lava Corp., Drucker, Julius, Farbeniabriken Bayer, Kreield-Uerdingen Chattanooga. Tenn. 22, Germany Dewey, B. K. 41 Summit St., LeRov. N. V. Dubler, Robert H. (S), 638 Edgewood Ave., Trenton. N. J. i Dex'neimer, E. C.. Box 6. Granite City, 111. Du3ois, H. B,*T Consolidated Feldspar Corp., 1403 Trenton Diamond Alkali Co. (L. T. Welshans), Painesviile, Ohio Trust Bldg., Trenton 8. N. J. j Diamond, Grant S.,*f Electro Refractories & Abrasives Corp., DuBois, Harold V.. 4147 159th, Lawndale, Calif. 344 Delaware Ave., Buffalo 2. N". V. Duche, Frederic, Companie Generale d'Electro-Ceramique/12 Diaz. Jose J. (J), Fabrica Nacional Loza de Penco, Penco. rue de la Baume. Paris 8. France Chile Duckworth. Winston/ Battelle Memorial Institute. 505 King T'irk, Clarence H., Gordon St., Natrona Heights, Pa. Ave., Columbus. Ohio :as. Charles H., 1524 Sunset Rd., Chattanooga, Tenn. Duevel. Charles O., Jr., American Thermos Bottle Co., Nor i. ..tens. H. A.. Nilcrom Porcelains (Aust.) Pty., Ltd., 221 wich, Conn. ! Separation St., N'orthcote, Victoria, Australia Duff, R. D., 4318 Commonwealth, Toledo, Ohio I Dickey, Herbert R., 26 Regent St., St. Thomas. Om., Canada Duffy, J. P., Stillwater Clay Products Co., Lock Drawer 32, I Dickey, John M.. Jr./ 179 Franklin Ave., Brookville, Pa. Uhrichsville, Ohio j Dickson, John H. (J), 811 N. Third St.. Toronto, Ohio Dufour, Jean Leonard. Ceramica Sanitaria Porcelite, Rua i Diener, Leonard W, Cuthbert & Park Ave., Collingswood, ltatnga 291, Caixa Postal 3845. Sao Paulo, Brazil i X. JI Dietert, Harry W., 9330 Roselawn Ave., Detroit 4, Mich, j Dietrich. \V. F.. 1230 29th St. N.W.. Washington, 7, D. C. Dugan, Robert T. (S), 2703 Rio Grande St., Austin, Texas Dugan, Stavner A. (J), 1247 Vine St., Abilene, Texas Duhrssen, Alfred, Commercial Decal, Inc., East Liverpool, ' - Dietterle, Edwin W,, 3834 Monteith Dr.. Los Angeles 43, Ohio 1 Calif. Duke. James B.. 208 E. Riverside Dr., Carlsbad. N. Mex. Dillender, Richard D. (J), 3216 Ruffin St.. Raleigh. N. C. Duke, John J., Box 33, Saxonburg, Pa. Dilliard, Paul D., 1313 E. Wheeling St., Lancaster, Ohio Dulberg. Irving. Academy Apts., Beliefonte. Pa. Dillon, Zale. 56 Riverlawn Dr., Fair Haven, N. J. Dulin. Francis H. (S'). 7723 Westmoreland Dr.. Sarasota. Fla. Dingledine. H. F., National Sewer Pipe Co., Ltd., Wentworth Dunbeck, Norman J.. Eastern Clay Products Dept.. International St. N,, Hamilton. Ont., Canada Minerals & Chemical Corp.. 20 N. Wacker Dr.. Chicago 6. III. Dingledy, David, 235 Hoover St., Newark, Ohio Duncan, J. Earle, Pittsburgh Plate Glass Co., Research Labo Dingier, Edward L., Jr., 907 Ann St.. Birmingham, Mich. ratories, Creighton. Pa. Dingwall. Andrew, 325 Spring St.. New York 13, N. Y. Duncombe, George H., Jr..* 150 E. Frambes Ave., Columbus !' Dippeii, L. V.. 17 Second Ave., Tirr.r. 9. Ohio Dirats, Elwyn. 120 W. Silver St., Westfield, Mass. 1, Ohio Dur.gan. Robert (S), University ci Illinois. 2C4 Ceramics. Urbana. Illinois. Dunn, H. E., Vanadium Corp. of America. Bridgeville. Pa. Dunnican, Ward G., 277 E. Seventh St.. Clifton, N. J. Distillator. Philip R., Jackson Vitrified China Co., 2 West St., Duplin, V. J,, Jr., R. R. 1, Paris, Ohio Pelham Manor 65, X. Y. du Pont, E. I, de Nemours & Co., Inc. (H. C. Kuchler), Dixon, Anna Lane. 815 N. Fourth St., Burlington, Iowa Electrochemicals Dept., Wiljningion 98, Del. _ (Dixon, Gene, Kyanite Mining Corp., Cullen. Va. Dixon, Joseph, Crucible Co. (\\r. R. Wyckoff), 167 Wayne St., Jersey City, N. J. Durgin. Charles B.. Monsanto Chemical Co.. St. Novis, Mo. Durham. Carl T.. Jr. (J). Box 111. Chapel Hill. N. C. Durst. William A. (S). Windfall Rd.. St. Marys, Pa. ' Dlugozima. W. R.,f Box 332 Station A. East Liverpool. Ohio Duvall, Wayne H., 319 E. Court St., Urbana, Ohio I Dobbins, Norman E., Box 117, Vereeniging, Transvaal, Duwez, Pol, Jet Propulsion Lab., California Institute of | South Africa Technology, Pasadena. Calif. j Dodd. Arthur E,, British Ceramic Research Assn., Queens Dyre. Warren T.. 317 Estaugh Ave.. Haddonfield. N. J. / Road, Penkhull. Stoke-on-Trent. England I Dodd. Charles M.,*T Dept, of Ceramic Engineering, Iowa State College. Ames. It. E Dodge. Alfred W.. Hazei-Atlas Glass Co.. 126 Market Sc. Zanesville. Ohio Eagle, J. Eugene,** 3202 McShane Way, Baltimore 22, Md. Dodscn. W. E.. Fire Brick Service & Supply, 900 E. 72nd St., Eagle Picher Co. (O. P. Hense). American Bldg., Cincinnati Cleveland 3, Ohio 1, Ohio Dolan. Lawrence J. (S">, 1364 E. Hudson St.. Columbus 11. Ohio Earhart, William H., Ceramic Engineering Dept., Pennsyl- Doil, Charles E,, Mt. Clemens Pottery Co., Mt. Clemens. Mich. vania State College. State College. Fa. Dominion Minerals, Inc. (V. V. Keisey), Pinev River, Va. Earl. Fred C. (S'). Box 84. Broadalbin. N. Y. Donahcy, John W./ Apt. 22, 40 Revere Rd.. Drexel Hill. Pa. Earl, J. Alfred, 1621 S. El Moiino St., Alhambra, Calif. Donen. I.. Consolidated Glass Works, Ltd., Box 562, Germis- Early, Joseph/ Box 1312 Fairmont. W. Va. ton. Transvaal. South Africa East. Walter H.. 1810 Tamerlane Dr.. Glendale 8. Calif. Doney. Louis M.. R. R. I, Poweii. Tenn. Easter. George J.."* Electro Refractories & Abrasives Corp., Donnenwirth, A. L./ 778 Seymour Ave.. Niagara Falls, N. Y. Willett Rd.. Buffalo 19. N. Y. Dora. Joseph C..f 5360 W. Washington. Chicago. 111. Eastman Kodak Co., Research Library, Kodak Park Works. Doran. Robert F./ Sylvania Electric Products, Inc., Cottage Rochester 4. N. Y. Pi., Mineoia, N. Y. Eck. Bernard J. (S), 1945 S. Glenwood, Springfield. 111. Dore. James E. (Jl. 2518 W. Euclid. Spokane 13, Wash. Eckel. J. C,, U. S. Steel Co.. 525 Wm. Penn Place, Pittsburgh Dorf, Arthur L. (S), Box 716, Alfred, N. Y. 30. Pa. Dormer, Franklvn C.. Jr.. Hanover. N. J. Eckley. J. R, Aluminum Co. of America, 801 Gulf Bldg., Dorn. Alvah J.. Dresden. N. Y. Dorn. G. Neal.t 1015 Kemp Ave.. Ironton. Ohio Domey. Andrew W. (St. Box 108. Ga. Tech.. Atlanta. Ga. Dorsett. O. A.. Knox Porcelain Corp.. Knoxville. Tenn. Dorsey, Baird L,, 300 Walnut Rd., Pittsburgh 2, Pa. Dorsey. John J. (J), 385 Good Ave.. Indianapolis 19. Ind. Doty. Henrv S., Commercialores. 39 Cortiandt St., New York 7, N. Y. Dougan. C. W,, 2025 Bellevue Dr.. Glendale 1, Calif. Dougherty. Leon A.. 370 North St.. Sun Prairie. Wis. Dougherty, Sylvester J, Metallurgical Dept., Weirton Steel Pittsburgh 19, Pa. Economos, George (S), 394 Riverway, Suite 9, Boston, 15, .Mass. Edlin. Vernon. 6731 Paxton Ave.. Chicago 49. III. Edson, Sidney P.. 20 N. Sixth St., Hudson, N. Y. Edwards, F. M.. Porcelain Products, Inc.. Carey, Ohio Edwards J. B,, 2139 Field St., Box 336, Dallas 1. Texas Egerton, Lawson, Bell Telephone Labs., Inc, Murray Hill, N. J. Eggleston. Myron M.,* Praca das Bandeiras, 61, Apt. 91, Sao Co.. Weirton, W. Va. Paulo. Brazil Dougherty. W. E..* 1625 Barr Ave., Pittsburgh 5. Pa. Ehle. Jay C.. 251 Buckingham Rd., Rocky River 16. Ohio Douglas, John, Co. (A. J. Raible), Cincinnati 16, Ohio Ehlers. G. Milton. 422 N. Fifth St., Milwaukee 11, Wis. Douglas. Richmond, Douglas Firebrick Co., Ltd., Dairy, Ehman. Roy G.. 600 S. Allen St.. State College. Pa. Ayrshire. Scotland Eichenberger. Frederick J., Jr. (S). Holley Rd.. Elba. N. Y. Draeger, Capt. R. H., Naval' Medical Research Institute, Bethesda 14, Md. Drake. M. Ellis. Alfred University, Alfred, N. Y. Eide, Alwin G, American Zinc Sales Co, Box 327, Columbus 16, Ohio Eitel. Wilhelm. Director oi Silicate Institute. University of Drakenfeld, B. F,, & Co. (Scott J. Courtney), 45-47 Park Place, New York 7, N. Y. Toledo. Toledo 6. Ohio Eiwen. George E.. 1947 Edgemont Dr.. E. Petersburg. Pa. Drammens Glassverk. (Ragnar Tanberg), Drammen, Norway Ekholm, L. G./ Box 327. R. R. 2, McKeesport. Pa. Draper. Perry E., Mansfield Sanitary Pottery, Inc., Perrysville. Ohio Elder, J. C, Robertson Mfg. Co.. Box 848, Trenton 5, N. J. Dressier. Philip,** Swindcll-Dressler Corp., 3ox 1888, Pitts 419 burgh 20. Pa. Vol. 31, No. 10 (1952) Electric Auto-Lite Co., Spark Plug Div. (Robert Twells), Box 231, Fostoria, Ohio Electro Refractories & Abrasives Corp. (Grant S. Diamond), 344 Delaware Ave, Buffalo 2, N. Y. Eljer Co, Enamel-Ware Div. (L. A. Bateman), Salem. Ohio Ellefson, Bennett S.. Sylvania Electric Products. Inc.. 208-20 Willets Point Blvd.. Bayside, Long Island. N. Y. Elliott, A. \V,, Covered Wagon Ranch. Cloveraale, Calif. Elliott, G. F., 800 Rickett Rd., Brighton, Mich. Elliott, George, Bonnyside House, Bonnybridge, Stirling, Scotland Elli^. Arthur. "Lindenhurst." Adamthwaite Drive. Blythe Bridge. Stafford. England Ellis, W. H., Box 712, Alliance. Ohio Ellison, Henry W., 12 E. Third St., Corning. N. Y. Ellison, R. W., 1551 E. Loma Alta Dr., Altadena, Calif. Elmer, Jack T.. 14384 Lenrav Lane, Los Gatos. Calif. Elmer, Thomas H., 219 E. High St., Painted Post. N. Y'. Elosua, Bernardo. Apt. 360, Monterrey, N. L., Mexico Elston, Keith/ Hawthorne St., Lenox, Mass. Ely. William G., Pittsburgh Plate Glass Co., 2300 Grant Bldg., Pittsburgh 19. Pa. Emanuci, E. C, Armstrong Cork Co.. Research Labs., Lan caster, Pa. Emhiser. Donald. 1105 Eighth Ave.. Bracker.riagc, Pa. Emison, M. Hershel, Corning Glass Works, Charleroi Div., Charleroi, Pa. Emley, William S., 303 Er.glewod Ave., Mew Castle. Pa. Emrich, Allen H. (S), 1799 Franklin Ave., Columbus. Ohio Emrich, Emerson W./ R. T. Vanderbilt Labs., East Norwalk. Conn. Enberg, Christer. Tegellaboratorie: (Brick Lab.), Exp. Sta. of the Royal Swedish Academy tor Engr. Science. Drortr.ing Kristinas vag 47. Stockholm O, Sweden Engel, Juan J. R., Casilla Correo 2394, Buenos Aires, Argen tina Engel. Rene. 711 S. Fair Oaks Ave., Pasadena 2. Calif. English China Clays Sales Corp., 551 Fifth Ave., New York 17, N. Y. Enhus. Hans Gosta. Aktieboiaget Malardalens Tegelbruk, Stockholm 3, Ericsbergsgatan 27. Sweden Enloe. Scroop W., Jr.. Spruce Pine, N. C. Enloe, Scroop W,, Dillsboro, N. C. Erard. Edward. Prolor.gacion Calle De La Rosa, No. 9. Atzcapotzaico. D. r., Mexico Erdinc. Saban S. (S). M.T.A. Genel Direktoriugu. Muh. An kara. Turkey Erickson, A. Alfred. 84 Pershing St.. Corning, N. Y. Erickson. Alien J., 4844 38th Ave. N. E., Seattle 5. Wash. Erie Resistor Corp. (Paul F. Siegrist). 644 W. 12th St.. Erie. Pa. Ernst. Walter S.. 2728 E. Fifth Ave., Knoxville. Tenr.. Erslev. Chauncey J., jr. (Si. Box 73. Rexville. N. Y. Ervin, Guy, Jr., Research Laboratory, Norton Co., Wor cester, Mass. Erzen. Frank C. (J). 2545 Hillegass Ave.. Berkeley, Calif. Eschenburg. Robert L.. II (S). Fioresville. Texas Espersen. Karen. Holmegaards Glasvaerk, Holme-Olstrup. Den mark Espinosa, Miguel, Box 2848, Guito. Ecuador Esrey, Wallace M.. 20 Bella Vista Ave., Pittsburg, Calif. Esseistyn. Willard A.. R. R. I, Canonsburg. Pa. Essick, Charles R, Pennsylvania Optical Co.. Reading, Pa. Estes, J. F, Haeger Potteries, Inc, Dundee, III. Etheredge, Otis K, Box 252. Gordon, Ga. Etris. Samuel F., 100 W. Nippon St., Philadelphia 19. Pa. Eubank. Wm. R.. 226 E. Broad St.. Chesaning, Mich. Eubanks. Alfred G,, Sanatorium, N. C. Eureka Flint & Spar Co. (Herreld D. Thropp), 190 W. State St.. Trenton 3, N. J. Eusner, George_R, 1025 Summitt St.. McKeesport. Pa. Evans, Charles E, 2401 Northglen Drive. Columbus 11, Ohio Evans, Daniel O, Hillcrest & Linden Ave, Mapleview. Char leroi. Pa. Evans. Edward J, Welsh Tin Plate & Metal Sumping Co, Llanelly. Carmarthenshire. Great Briuin Evan* Lead Corp. (R. M. Evans), Box 1467, Charleston 25, W. Va. Evan* Pipe Co. i'T. J. Evans IID.Uhrichsville. Ohio Evans. Richard F,, 2320 Milton Ave.. Syracuse. N. Y. Evans, R. L, George L. Ashworth i Bros, Ltd, Broad St. Works, Hanley Stoke-on-Trent. England Evans. R. M, Evans Lead Corp, Box 1467, Charleston 25. W. Va. Evans. Ross M, 604 E. Mechanic St, Brazil. Ind. Evans, T. J, III. Evans Pipe Co. Uhrichsville. Ohio Evans. William W/ (J). 506 E. Iron Ave, Dover, Ohio Everhart. J. O,** Engineering Experiment Station, Ohio State University, Coiumbus 10, Ohio 420 Eversole. W. G, Linde Air Products Co, E. Park Dr. i Wooi ward Ave, Tonawar.da. N. Y. Ewing, Robert F, Mansneid Sanitary Pottery, Perrysvill Ohio Exolon Co. (S. F. Waltoni, Tonawanda. N. Y. Everlv, George 3, Argonne National Laboratory, Box 520 Chicago 8U. 111. F Fabianic, William L.,*T 1831 Seminary Ave, Alton. 111. Fabrics de Ladrillos Industriales y Refractarios, S. A. (Sal vador Odriozola Gomez), Apartado 390, Monterrey, N. L Mexico Fabrics de Porcelsas ds Vista Alegre Lda, Largo da Biblic teca Publica. No. 17, Lisbon, Portugal Fackt. George P,* 408 Paseo del Mar, Palos Verdes Estate Calif. Fadanelli, Louis H. (S). 1132 S. California Ave, Chicago. 111. Fahrenbruck, William O./ R. R. 1, Box 95, Tifhn, Ohio Failmezger, Howard,*T Victor Insulators. Inc, Victor, N. Y'. Fairchild, Charles O, Chain Bridge Rd, Fairfax, R. R. I Va. Fairfacts Co, Inc. (M. P. Mitchell), Box 374, Tronton 3. N. . Falconer. Donald P, 1018 Maple Ave, Evanston, ill. Failon. Frank J./ B. G. Corp.. Ridgeneid, X. J. Falter, Arthur H, 8635 Jacob PI, Niagara rails, N. Y'. Farber, Louis G, Ceramics Monthly, 3494 N. High St, Colun bus 14, Ohio Fargo, Jarvis J, 40 Centerway. Coming, N. Y'. Fasold, G. A, 7329 Bernard Ave, Cincinnati 31. Ohio Faulkner, Karl B, Corning Glass Works. Corning. N. Y. Faust, Ernest H, Jr/ (J), 3129 Whitney Ave, Mt. Carme Conn. Faust. George T, 9907 Capitol View Ave, Silver Spring, Mi Fay. Wayne X. 202 Oxford Hill Lane. Havertown. Pa. Feagin, R. C, Austenal Laboratories. Inc, 224 E. 39th St New Y'ork, N. Y'. Federal Glass Co. (Henry H. Blau), E. Innis Ave, Columbu 7, Ohio Federal Seaboard Terra Cotta Corp, (O. E. Mathiaseni Perth Amboy, N. J. Fedock. Michael ?.. 163 Wood'.awn Ave, N. W, Canton S. Chi Feldman, Gail K. (S). Box 1-4. Alfred. N. Y`. Fellows, R. L,,"* 748 N. Kensington Ave, La Grange, III. Fellows, Roger L, Jr/ i'J), 748 N. Kensington Ave, La Grang Park. III. Fels, C. G./ 11 DeForrest Ave, North Plainfield, N. J. Femon. Thomas W, General Steel Wares, Ltd, Londot Ont, Canada Fenton. Walter M,, Metalloy Corp, 2560 Rand Tower, Min neapolis 2. Minn. _ Ferdinand. George. 7113 risr.burn Ave, Bell. Calif. Ferguson. D. Robert, ill (J). Box 368. New Cumberland. Va. Ferguson. Donald IS). Box 736. Alfred. N. Y'. Ferguson. Douglas J, Pigeon Forge Pottery, Pigeon Forgi Tenn. Ferguson, Robert F, 1765 Caieb Dr, Zanesville, Ohio Ferguson, Robert L_ Y'ankee Hill Brick Mfg. Co, 730 Stuar Bldg, Lincoln 8. Neb. Ferguson, R. W, General Ceramics a: Steatite Corp, Keas bey, N. J. Ferraz. Cyro B,, Rua Voluntaries da Patria 2.505, Casa 15. Si Paulo. Brazil Ferris, Harry P- (J). 66-B Parkway Apts, Haddonfield. N. J Ferris. James E, Niagara Alkali Co, 60 E. 42:id St, New Yori 17. N. Y. Ferro Corp. (R. A. Weaver), 4150 E. 56th St, Cleveland I Ohio Ferro Engineering Co, 1208 Hanna Bldg, Cleveland 15. Ohio Fessler. A. H.,** Fenton, Mich. Fetter. H, Compania Mexicana de Refracurios. A. P. Greei S. A, Tlalnepantla Apartado, Posul 33, Mexico City Mexico Fetzer. George W,, 1205 17th Ave, Columbus 11. Ohio Feyling. Claus A, Eie Etentofabrik. Egersund. Norway Fibergla* Canada, Ltd, Oshawa, Ont, Canada Field. Theodore E,, 16th & Lee Sts, Louisville 10, Ky. Filippi, Hugo,* Illinois Brick Co, 228 N. La Salle St, Rm 1716, Chicago 1, 111. Fiilmore. Charles L./ 903 Robin Rd, Silver Spring. Md. Fiireis. Samuel (J). Box 772. Perth Amboy, N. J. Findlay Clay Products Co. (R_ S. Cratt), Washington, Pa. Finlay, G. R,, Box 243. Chippawa. Ont, Canada Finlayson, John R. (S), 4807 Leiper St, rrankford Philadelphia Pa. Finney. Edwin L. (J), The Clavcraft Co, Shawnee, Ohio Ceramic Bulleti: :irestine, Arthur G., 3-4 Dewey Ave., Fairport, N. Y. 'ischer, Eugene A., 108 Newton Ave. N., Worcester 5. Mass. :ischer, Peter R. (S), Deisenhoiener Str. 87. Munich 9, Ger- riscner. Robert J., 37 Barker Ave.. Eatontowr., N. J. isn. Eliord T. (SI, Box 801, Alfred. X. Y. :ishel, Waite P.. Box 127, Vanderbilt Univ., Nashville 4. Tenn. r. Henry C- 1 New Bond St.. Worcester. Mass. -. jame* F.. 1680 S. Second St.. Alhambra. Calii. -*i -c. Joseph R., Bell Telephone Labs., Rm. 1A-336, Murray Hill. N. J. risher, William V., Anchor Hocking Glass Corp., Lancaster. Ohio .i rishley, William S-, The Sparta Ceramic Co.. East Sparta, Ohio fiih-Schurman Corp. (Murray Yawitz), 70 Portman Rd., New Rochelle, N. Y. Fisk, Henry G- Natural Resources Research Inst., Univer sity of Wyoming. Laramie, Wyo. Fitzgerald, Alex E.,f General Refractories Co., 1320 Locust St- Philadelphia 2, Pa. Fitzgerald, J. Vincent. 109 Laurel Place, New Kensington, Pa. Fitzpatrick. William D., 316 E. Walnut, Clearfield. Pa. Fitzsimmons. Elmer S.. Dept, of Ceramic Eng., Iowa State College, Ames, Iowa Fitzsimmons. Robert F. (S'), R. R. 1, Oakneld, N. Y. Fix, Frank A., Posey Iron Works, Inc., Lancaster, Pa. Fleischer, Arthur, Box 349, Easthampton, Mass. Fleischer. Eiler, Holst & Fleischer, A/S Prinsens Gate 1. Oslo, Norway Fleming, A. P. M., Metropolitan Vickers Electrical Co., Ltd., Trafford Pk- Manchester 17, England Fleming, Charles A..* 215 Dogwood St.. Park Forest. 111. Fleming, David M.(S), 322 E. Irving Ave., State College, Pa. Tletcher Enamel Co. (J. Carroll Fletcher), Dunbar. W. Va. Fletcher. J. Carroll, Fletcher Enamel Co., Dunbar, W. Va. Flick. Fulton B., 1706 First National Bank Bldg., Pittsburgh 22. Pa. Flint, E. P., Armour Research Foundation, 33 W. 33rd St., Chicago 16. 111. Fiint. Francis C..*' Hazel-Atlas Glass Co.. 13th & Jacobs Sts.. Wheeling, W. Va. Florence. Jack M.. National Bureau of Standards. Div. 9.2, Glass Section. Washington 23. D. C. Flu. Eldon B., 1333 Crooks Rd., Royal Oak, Mich. Fogelberg, Sven, Webb's Crystal Glass Co- Ltd., Dennis Glassworks, Stourbridge, England Foikers. Charles L. (S3. Box 243. Ackley, Iowa Fontana, Eugene H. (J). Box 255. Renton. Pa. Fonvielle, Frank P.. Jr..T Dentist Supply Co. of N. Y.. 500 W. College Ave.. York. Pa. raote, Earl H., Jr.,* Akron Rd.. Medina. Ohio Foote Mineral Co. (L. G. Bliss), 18 W. Chelten Ave., Phila delphia 44. Fa. Foraker, Robert W,, 230 Newman St.. Metuchen, N. J. Forbes. Lewis J.-B.. 165 Bloor St.. E,, Toronto. Ont., Canada Ford. Fred J.. Box 690. Whittier. Calif. Ford. George D..f 2136 Wilmer St.. Zanesville. Ohio rord. W. B., Smith & Stone. Ltd., Georgetown. Ont.. Canada Ford. Walter D..f Pittsburgh Corning Corp., Technical Dept.. Port Alleghany. Pa. Fords Porcelain Worka (I. A. Hansen), Perth Amboy, N. J. Foresman. Grover C., 212 Cedar St.. Coming, N. Y. Foriaz. Nicolau. Porto Ferreira CP. C.E. Sao Paulo. Brazil Forkner. Henry R. (S'). Box 482, Blacksburg, Va. Forry. W. J. (5), 2325 S. Colorado St.. Philadelphia. Pa. Forse. Edwin B., Carborundum Co., Box 268, Perth Amboy, N. J. Porter. Samuel A.. 1210 Clark Bldg.. Pittsburgh 22. Pa. Posdick, Marion L.,* New York State College of Ceramics, _ Alfred. N. Y. .-osier Charles T. (J). 1766 N. 42nd St., East St. Louis. HI. Foster-Forbes Glass Co. (F. R. Motsch), Marion. Ind. Foster, Wilder D.. 5405 Bower Ave.. Verona. Pa. Foster. Wilfrid R.. Dept, of Mineralogy, Ohio State University, Columbus 10. Ohio Fostoria Glass Co. (Roy G. Yeater). Moundsville, W. Va. Fouratt. Robert F.. Box 111. Rocky Hill, N. J. Fox. James L. (S). Box 6313, Virginia Tech. Sta., Blacksburg. Va. Frad, William A. (S). 910 Cedar St., Roila. Mo. rrahme, Herman H,, 114 Winston Rd., Akron 13, Ohio Frame, Dudley P.. Jr,, 490 Colonial Ave.. Worthington. Ohio France, J. H., Refractories Co. (William A. France), Snow Shoe. Pa. France. William A., J. H. France Refractories Co., Snow Shoe, Pa. Vol. 31. No. 10 (1952) Franceschini, Eng. Felippe. c/o Ceramica Sao Caetano, Caixa Postal 278, Sao Paulo, Brazil Francis, Ronald K. (S3, 9 Sherwood St.. Wellsboro, Pa. Francisco, Allen C.,f 227 Beeler Dr., Berea, Ohio Franck, Leon. Franck & Steeman, S. A., 20 Ave Emmanuel, Harer.-Nord, Belgium Francl, Josei (S), 52 Massachusetts Ave., Cambridge 39, Mass. Franco. Nelson, Industrias Brasileiras Artigos Refratarios S/A, Rua 15 de Novembro. 228 5* S/506/9. Sao Paulo, Brazil Frank, Henry A., Kokomo Sanitary Pottery Corp., Kokomo, Ind. Frantz. S. G., Co., Inc. (Samuel G. Frantz), Box 1138, Tren ton, N. J. Frantz, Samuel G., S. G. Frantz Co.. Inc., Box 1138, Trenton, N. J. Frantz, Thomas O., 44 E. Broad St., Hopewell, N. J. Franz, Leo J., Acme Brick Co., Malvern, Ark. Fraser. Lewis, H. D.. 5532 South Everett Ave., Chicago 37, III. Fraser, Orray T.,t 574 Mithoff St.. Columbus 6. Ohio Fraser, Walter A.. Servo Corp. of America. 2020 Jericho Turn pike, New Hyde Park. N. 3'. Fraser, W. B, Box 144, Dallas 1. Texas Fraulini. Felix M.. Plibrico Co., South Shore. Kv. Frazier, C. E.,* Frazier-Simplex, Inc., 436 E. Beau St., Wash ington, Pa. Frazier, C. T., 527 Beau St.. Washington, Pa. Frazier, J. Earl.'t Frazier-Simplex, Inc. 436 E. Beau St., Washington. Pa. Frazier-Simplex, Inc. (C. E. Frazier), 436 E. Beau St., Wash ington, Pa. Frechette, Howells* (Life), 52 Park AvevOttawa, Ont.. Canada Frechette, Van Derek,t New York State College of Ceramics, Alfred, N. Y. Frederick, C. L.J 24 Meadowood Lane. R. R. 4, Chagrin Falls, Ohio Frederick, Gilbert M,, Babcock & Wilcox Co., 1120 Packard Bldg., Philadelphia 2, Pa. Frederick. Vernon W, Libbey-Owens-Ford Glass Co., Ross- ford, Ohio Fredericks, John D., Pacific Clay Products, Box 145, Sta. A.. Los Angeles 31, Calif. Freeberg. Albin. 4750 17th Ave.. N.E. Seattle 5. Wash. Freedman. Pesah, Lapid Ceramic Works, Ltd.. Box 1758, Tel Aviv. Israel Freeman, Charles A.,*? Freeman Fire Brick Co.. Box 606, Canon Ciry, Colo. Freeman. Edgar H., Cook Mfg. Co., Box 157, Walnut. Calif. French, Myrtie M.,* 8301 S. Langley Ave., Chicago 19, 111. French, Preston W..T 1517 Union Ave.. Brackenridge. Pa. French Saxon China Co. (W. V. Oliver). Sebring, Ohio Freund. Thomas L. (S). Ferro Corp.. Fiber Glass Div., 200 Wooiiycrzs: Ave.. Nashville 20. Term. Frey, E. F., DeVilbiss Co.. Toledo 1, Ohio Frever. William A.. Jr. (J). Corning Glass Works. Corning, N. Y. Friedberg, Arthur L., 204 Ceramic Bldg.. University of Illinois, Urbana, 111. Friedman, Louis K,, 1320 Bennington Ave.. Pittsburgh 17, Pa. Friedmann. Ernesto (S3. HOEHR-GRENZHAUSEN, Westerwald. Postlagemd. Germany (French Zone) Fritz, E. H..** 710 Walnut St.. Latrobe. Pa. Frome. Howell E.. United Fuel Gas Co.. Box 1273, Charleston 25. W. Va. Fronczak, Edwin T., 1431 26th St. N. W., Canton, Ohio Frost. Leon J., Box 138, Lewiston, N. Y. Fry, Herbert G.. National Enamels, Ltd., 53 Norman Rd., Greenwich. London S. E. 10. England Frysinger, James B.. 140 Stanwix St., Pittsburgh 22. Pa. Fulker, Richard H.,r 1408 Nicklin Ave.. Piqua. Ohio Fuller, Donald H.,f 335 S. Cook Ave., Trenton, N. J. Fuller. L. R-t Globe American Corp., Kokomo, Ind. Fuller, Richard B., 628 Wayne St.. Sandusky, Ohio Fuller, Richard G.. H. C Spinks Clay Co., First National Bank Bldg., Cincinnati 2, Ohio Fulmer, Raymond C., Stackpole Carbon Co., St. Marys, Pa. Fulrath. Richard M,, Calif. Research & Development Co., Livermore Rsesearch Lab.. Livermore. Calif. Fulton. Glen B., Norris Stamping & Mfg. Co., Box 16. Sta. K, 5215 Boyle Ave., Los Angeles. Calif. Fultz, Dorris E.. 404 Austin Ave- Barrington, N. J. Funk. James E. (S), 21 S. Main St., Box 236, Alfred. N. Y. Funkhouser Co- (J. B. Sauls), Blue Ridge Summit, Pa. Funnell. John E.J Southwest Research Institute, Box 2296. San Antonio, Texas Furr. Clegg M..T Box 191, Oakboro. N. C Fussell, Lynn E.. 122 Kingston. Louisville. Ky. Fuszara. Lester T.,f 5 Stanton Ave.. Perry, N. Y. 421 G Gad, G. M. (S). Chemical Engineering Dept, Prince Consort Rd, London S. VV. 7, England Gagin, L. V, Kimble Glass Co, 2626 Dorr St., Toledo, Ohio Gainer, Tavior M, 6505 Evangeline, Louisville, Ky. Gilbreath. Wiiliam VV.. Jr..* 317 S. West Ave, Elmhurst. 111. Gallion. F. J, Haynes Stellite Div, Union Carbide Sc Carbon Corp.. Research Dept, Kokomo, Ind. Gallison. Herbert , Worthington Corp, Industrial Mixer Div, Plainfield. N. J. Gallup, John.l RCA Victor Div, Radio Corp. of America, 415 S. Fifth St, Harrison, N. J. Galusha, Richard L, Box 12. Bendersville, Pa. Galvin, Richard J, Sheffield Brick Sc Tile Co, Sheffield 1, Iowa Gamson, Bernard W, Great Lakes Carbon Corp, Box 9, Morton Grove. UL Gangler, James J, 20538 Stanford Ave, Fairview Park 26, Ohio Garner, Albert F, Jr, \V. G. Bush & Co, 174 Third Ave. N,, Nashville. Tenn. Ganpule, Anant K, Parshuram Pottery Works Co, Ltd, Morvi. Saurashtra, India Gantt Hugh H, Polynesian Arts, Mayfield, Ky. Garbisch, Norbert S, Garco Products, Inc, Box 351, Butler, Pa. Garcia-Leal, Ramon,! Apartado Postal 1115, Monterrey, N. L, Mexico Garco Products, Inc. (Norbert S. Garbisch), Box 351, Butler, Pa. Garden, Henry R, Jc. Box 123, Salem. Va. Gareis, Friedrich. "Tassir.o," Montagnola Lagano, Switzerland Garfield Refractories Co. (Kenneth A. Rugh), Bolivar, Pa. Garland, C. r, Mason City Brick & Tile Co, Mason City, Iowa Garlick, Oakiey H, Paul O. Abbe. Inc, Little Falls, N. J. Garlick, Phiiip L. (S), 59 E. Longview, Columbus 2. Ohio Garrison. Donald 1_f 401 Woodside Ave, Xarbcrlh. Pa. Garson. F. J, New Jersey Porcelain Co, Box 908, Trenton 5, N. J. Garstang. Alec, King, Taudevin &c Gregson, Ltd, Melbourne Chambers. Cambridge St, S'nemeid 1, England Garve, T. Walter.*! 69 VV. VVeisheimer Rd., Columbus 14, Ohio Garvey, Lawrence P,r Babcock fit Wilcox Co, Box 835. Harrisburg & Sawburg Rds, Alliance, Ohio Gaskins, VV'. VV..T Sierra Talc & Clay Co, 5509 Randolph St.. Los Angeies 22, Calif. Gates, Daniel VV.t (S3, Apt. 41, Bldg. 4L, Calloway Apts, 251 Tenth St, N. VV, Atlanta. Ga Gates. Louis E, Jr. (Sl. Box 425. Georgia Teen.. Atlanta. Ga. Gates, Major 1447 Perkview Ave, Pasadena. CMif. Gates. R. Wavne.' Samuel Stamping & enameling Co, Chatta nooga. Tenn. Gaudiano. Victor. M, Sanitarios El Aguila S. .V., Sidar y Ro- virosa 100. Mexico, D. F. Gauger, Alfred VV, Pennsylvania State College, State College, Pa. Gaunt Cnarles L, Indiana Glass Co, Dunkirk, Ind. Gautsch. Murray C..t NIetal & Thermit Corp, E. Grand Ave, South San Francisco, Calif. Gavin. G. P, Kohler Co, Kohler, Wis. Gebler. Kenneth A, 47 Brentwood Dr, Verona. N. J. Geiger, Cnarles F,*t Carborundum Co, Box 268. Perth Am boy. N. J. Geisinger, E. E,* Pfaudler Co, 1000 West Ave, Rochester 3, N. Y. Geller. R. F..*! 5511 York Lane. Bethesda 14. Md. Gelstharp, Frederick,* 1134 Park St, Tarentum 1, Pa. Geltman. Gerald (S), Box 229. Alfred. N. Y. Gemp. Robert Walter (J), 6000 Tabor Ave. FI, Philadelphia 11, Pa. General Ceramics and Steatite Corn. (R. W. Ferguson), Keasbey, N. J. General Color Sc Chemical Co, Inc, (Harry J. Keener), Box 7, Minerva, Ohio General Electric Co. (G. M. Boyd), Locke Dept, Box 57. Baltimore 3, Md. General Electric Co. (VV. S. Kahlson), Lamp Dept. Pitney Glass Works, Nela Park, Cleveland 12, Ohio General Glass Equipment Co. (Victor A. Plurabo), 5 S. Vir ginia Ave.. Atlantic City, N. J. General Refractories Co. (Russell P. Heuer), 1520 Locust St, Philadelphia 2. Pa. Gentry, Raymond. Alexander H. Kerr & Co, Inc., Box 2008. Santa Ana, Calif. Gentsch, Bernhard F,, United Gay Mines Corp, 101 Oak land St, Trenton, N. J. 422 George. W. C, W. S. George Pottery Co.. East Palestine. Ohio George. VV. R,, Canonsburg Pottery Co, Canonsburg. Pa. George, W. S, Pottery Co. (W. C. George), East Palestine, Ohio Georgia Kaolin Co. (Wharton Jackson), 433 N. Broad St, Elizabeth 3, X. J. Gephart, Charles D. (S). 114 Mc3ee St, Malvern, Ark. Gerber. Max. 232 N. Clark 5t,, Section 1. Chicago 1. 111. Gercar, Francisco J, S A. Cristalerias Del Uruguay, Comercio 1491. Montevideo. Uruguay Gerscn. Herbert (Si, 292M Bagshaw Rd, Columbus, Ohio Gerstenscnlager, V, Jr, Babcock Sc Wilcox Co, Box 923, Augusta, Ga. Gerster, C. VV," The Louthan Mfg. Co, East Liverpool. Ohio Getto. Allan (S). Box 258. Alfred. N. Y. Ghering, Leonard G,* Preston Laboratories, Box 149, Butler, Pa. Giacomelli, Domenico, Soc. It, Refrattari Marghera Azionaria, Via Industrie 52 Cas. Post. 38. Marghera, Italy Gibb, Mary J, American Ceramic Society, 2525 N. High St, Columbus 2, Ohio Gibbs, Melvin 3, Inland Steel Co, East Chicago, Ind. Gibson, Frank B, Association of American Railroads, 59 E. Van Buren St, Chicago 5, 111. Gibson. R. L,T 512 E. Leasure Ave, New Castle. Pa. Gieseke, Frans, Kockums Emaljerverk. Ronneby, Sweden Giesey. V. A, 1704 VV'. Carson St, Pittsburgh, Pa. Giess, Edward A. (S), 124 Geranium Ave, Floral Park. N. Y. Gilbert, Jules, Westvaco Giemical Div, 405 Lexington Ave. New York, N. Y. Giles, Thomos M. (S), 1970 Suffolk Rd., Columbus 12._Ohio Gilfillan. J. M,, New Jersev Porcelain Co, Box 908, Trenton 5. N. J. Gill, James A, 8427 Broadway. San Antonio 9, Texas Gill, John H, Gill Clay Pot Co, Muncie, Ind. Gill, Joseph W.,t 363 Hillside Ave, Elmhurst, I!!. Gill. LaVerr.e N,f American Radiator & Standard Sanitarj Corp, Box 268, Torrance. Calif. Gillespie, H. M, 225 Broadway, New York 7, N. Y. Giiliarc, Joseph VV, 103 VV. County St, Phoebus, Va. Gillinder Bros, Inc. (J. Fletcher Giliinder), Port Jervis N. Y. Gillinder, J. Fletcher. Giilinder Eros, Ir.c, Port Jervis. N. Y Gilluiy, William F. i.S). 212 unestnut St, Port Allegany, ?a. Gimson. Joseph F, Worcester Royal Porcelain Co, Ltd. Royal Porcelain Works. Worcester. England Gingold. Jacob. 1980 Fox Hill Rd, Indianapoiis 3, Ind. Ginther. Lawrence B,, Libbev-Owens-Ford Glass Co, 1701 E Broadway. Toledo 5, Ohio Giraldez. Emiiio, Lavalleja 717, Dept. F, Buenos Aires, Ar gen.f.na Girard. R. T, Works Laboratory, General Electric Co, icne nectadv, N. Y. Gitter. A. Josephine.*T 330 VV. 58th St, New York. N. Y. Gitzen, Walter H, I Wesley Dr, Belleville, 111. Given. Conrad VV'.. Great Lakes Steel Corp, Ecorse. Detroit IS Mich. Glabau. Ernest R. (S). c/o Mrs. Fenton, 10 Bartiett S:., Nev Brunswick, N. J. Gladding, Charles. Third & Keyes Sts, Box 88. San Jose. Caiii Gladding, MeBean Sc Co. (Wiiliam O. Brandt), 2901 Lo Feliz 3lvd, Los Angeles 39, Calif. Gladney, Kurt, Fiberglas Canada, Ltd, Box H, Sarnia, On: Canada Glaze. Francis VV, 4100 Gallatin St, Hyattsville. Md. Glen-Gery Shale Brick Corp. (Gordon E. Lewis), Box 181 Wyomissing. Pa. Glenshaw Glass Co, Inc. (George VV. Meyer), Glenshaw Pa. Gleysteen. Leland F, Owens-Illinois Glass Co.. General Re search & Develop. Div, 1700 N. Westwood. Toledo, Ohio Globe-Union, Inc. (J. Fletcher Harper), 900 E. Keefe Ave Milwaukee. Wis. Glossbrenner, D. I, R. R. 12, Box 261, Indianapolis, Ind. Glynn, T. VV, Blue Ridge Glass Corp, Kingsport, Tenn. Gnaedinger. John, 4520 VV. North Ave, Chicago 39. 111. Goble. Robert M. (S), R. R. 2, Sherman, Texas Goddard. VV'. T,, Box 428, Hamilton, Ont, Canada Goetchius, Don R, 4150 E. 56th St, Cleveland, Ohio Goettman. Franklin P, Standard Sand Co, Grand Haven, Mic! Coin, Fred L_, Gladding. MeBean & Co, Lincoln. Calif. Goldman. Basil B, 1545 S. State St, Chicago 5. 111. Goldsmith, Juiian R, University of Chicago. Dept, of Geolog: Chicago 37, 111. Goldstein. Maxwell K.. Balco Research Laboratories, 49-53 Ed son Place. Newark 2. N. J. Ceramic Bulleti Gomez. Salvador Odriozoia, Fabrica de Ladrillos Industrials y Refractories, S. A., Apartado 390. Monterrey, N. L., M CXJl'U Gonder. Lawton, Gonder Ceramic Arts, Inc., Box 448, Zanes- viiie. Ohio Goodman, Gilbert, General Electric Research Laboratory, The Knolls, Schenectady. N. Y. Goodman, H. A., Dominion Fire Brick 5: Clay Products, Ltd., Claybank. Sask, Canada imar, James S., American Radiator & Standard Sanitary ` . ]>.. 334 E. Broadway, Louisvilie 4, Ky. I -,jrich, H. R,t 1622 Santa Barbara Ave, Glendale 8. Calif. Goouwin, William Jarrard. Union Carbide & Carbon Research Laboratories, Inc., Box 580. Niagara Falls. N. Y. Gordon, Irwin (S). R C A Laboratories Div., Princeton, N. J. Gormiy, Alan L, 490 Shrewsbury St., Holden. Mass. Gormly, Maurice W'.. "530 Miami Hills Dr.. Madeira. Ohio Gornall, Henry A.,T 4357 Ardmore Rd., S. Euclid, Cleveland 21. Ohio Gorsuch, Charles A., Central Silica Co-, Masonic Temple, Zanesville, Ohio Gort. Walter A- 20 Sheridan Ave., Metuchen. N. J. Goss. Bruce R. (S), Klan Alpine Fraternity, Box FF, Alfred. N. Y. Gotto, Mrs. 3. D., Westmoor Laboratory, Chatteris. Cambridge shire, England Goudge. Monson F., Mines Branch, 40 Lydia St., Ottawa. Ont., Canada Gould. Robert E,*t Buffalo Pottery, Inc., 25 Hayes Place. Buffalo 10, N. Y. Graden. William F,, Simonds Abrasive Co, Tacony & Fraley Sts, Philadelphia 37, Pa. Grady, J. H, 283 Clisby Place. Macon, Ga. Graff, James B, Graff-Kittanning Clay Prod. Co, Worthington, Pa. Grad-Hittanning Clay Prod. Co, (James B. Graff), Worthing ton. Pa. Graff. Wiiliam A, Glass Technology Laboratory, General Electric Co, 1133 E. 152nd St, Cleveland 10, Ohio Graham. Burton W.. Davison Chemical Corp, Charles & Fayette Sts, Baltimore 3, Md. Graham. John W, Research Laboratory, Kennametal, Inc, Latrobe. Pa. Graham. Ronald A, Wyandotte Chemicals Corp, Research Div, Wyandotte. Mich. Grand Enameling Co, Div. of Grand Industries, Inc. (Val J. Cichowski), 2335 E. 67th St, Cleveland, Ohio Grannen. Edward A, 77 Sheehan Ave, Cincinnati 15, Ohio Grant. Frederic J, 2901 Los Feiiz Blvd, Los Angeles 39. Calif. Grant. Mrs. Frederic J, Gladding. McBean & Co, 2901 Los Feiiz Blvd, Los Angeles 39. Calif. Grant, L ;r::ta May, 1324 Speer Blvd, Colorado Ceramic Cen ter. Denver, Col. Gray. William T,, 521 Walnut St, Jenkintown. Pa. Great Lakes Foundry Sand Co. (C. L. Cruikshank), 720 United Artists Bldg, Detroit 26. Mich. Great Lakes Steel Corp. (Conrad W. Given), Ecorse, Detroit 18. Mich. Greavcs-Walker, A. F,*? Engineering & Industrial Expt. Eta, University of Florida, Gainesville, Fla. Green. A. T,* British Ceramic Research Assn, Queen's Rd, Penkhuii. Stoke-on-Trent, England Green, A. P, Fire Brick Co. (R. S. Bradley), Research Dept, Mexico, Mo. Green. Allen P,, A. P. Green Fire Brick Co, Mexico, Mo. Green. David T, Box 395, Milton. Ont, Canada Green, John R.,1 Brown Instruments Div, Wayne & Roberts Ave, Philadelphia, Pa, Green. K. S,, Church Gresley Potteries, N. Burton-on-Trent. England Green, Michael Edward. 2424 Hagen Drive. Alhambra, Calif. Green, Robert L, Lenox, Inc, Meade St, Trenton, N. J. Green. R. 5,t 18 S. Jefferson Rd, Mexico. Mo. Greene. Charles F,, Burns Brick Co, Macon. Ga. Greene, Charles H, 230 Chemung St, Coming, N. Y. Greene. J. F,,* 1043 New Pear, Vineland, N. J. Greene. Robert H,, Canadian General Electric, 5781 Notre Dame E,, Montreal. Que, Canada Greensnan, LeRoy.t (S'), 3470 Cannon Place, New York 63, N. Y. Greger, Herbert H, R. R. 1. Rockville. Md. Gregorius. J. S,*f Pittsburgh Plate Glass Co, 2300 Grant Bldg, Pittsburgh 19, Pa. Gregory, Glenn A, 300 Merrywood Lane. Muncie. Ind. Grenier, Lee. Magnet Cove Barium Corp, Box 832, Grevbull, Wyo. VOL. 31. No. 10 (1952) Gresham, Lucius C, Jr, c/u Acme Brick Co, Monroe. La. Griffin, Thomas W,, Bushy Hiil Rd, Simsbury. Conn. Griffin. William R. {}), 2336 N. Verdugo Rd, Glendale. Calif. Griffith, J. Scott, 5524 W. Adams St, Chicago 44, 111. Griffith, R. E, R. R. 1, Malvern, Pa. Griffith, William A. (S). Box F F, Alfred. N. Y. Griffiths. Norman, Nonporite Ptv, Ltd, 292-296 Burwood Rd, Hawthorn 2. Victoria. Australia Grigg, Arthur, Denver Sewer Pipe Sc Clay Co, Box 2329. Denver 1, Col. Grigg, Paul E,t 205 Foreman Dr, Norfolk 3, Va. Grim, Ralph , Dept, of Geology, University of Illinois. Urbana. 111. Grobb. F. S, G. F. Sterne fir Sons Ltd, 126 Bruce St, Brant ford. Ont, Canada Groome. Garland L,, 1347 Cambria St, Baltimore 25. Md. Gross. Franklin Jorge, Avenida Oswaido Aranha, 271 Porto Alegre. Brazil Gross, Harold I, Santa Anita Potteries, 3117 San Fernando Rd, Los Angeles, Calif. Grotefendt, Roger F, 2553A Benton Ave, Granite City, 111. Grothaus. Joseph V, 6920 S. Shore Dr, Chicago 49, III. Grove. Robert L.2 26 Rockland St, So. Dartmouth, Mass. Gruidl, Raymond. 407 W. Johnson St, Clinton, 111. Gruner, Max N, Harbison-Walker Refractories Co, 1325 Ambassador Bldg, St. Louis 1. Mo. Grunwald. Rose. 1724 Fourth St, S. E, Minneapolis 14, Minn. Gruver, Robert M. (S). Div. of Ceramics. Pennsylvania State College, State College. Pa. Gschwind, Jean F,, J. O. Ross Engineering Corp, 444 Madi son Ave, New York 22. N. Y. Guerci, Carl F, 1444 W'estgaie Dr, R. R. 2. Bethlehem. Pa. Guimaraes. Keiio Pentagna, Caixa Postal 1355, Belo Horizonte, Brazil Guimor.d. Alfred C, Geemo- Originals, 14824--26 Charlevoix Ave, Detroit 15. Mich. Guinn, W. B. (S). Ill W. Forest. Pittsburg. Kan. Gulick, Chester, Kentucky-Tennessee Clay Co, Alliance. Ohio Gullings. LeRoy V, 126 Parwav Dr, Wabash. Ind. Gummeson, P. Eg, Hoganas-Billesholms Aktiebolag, Hog- anas, Sweden Gunther, F. W, 849 Baker Ave, N. W,, New Philadelphia, Ohio Gunther, Juan R, Casilla 703. Concepcion. Chile Gunzenhauser, Adolph, 617 W. Ena Ave, New York 24, N. Y. Gupta, Subodh (Si. 3ox 213. Port Jervis. N. Y. Gustavson, Gordon E,,f 729 5. Lincoln Ave.. Kankakee. III. Guthrie, George, "Ochil" Harrow Rd, Sudbury Hill, Wem bley, Middlesex, England Guthrie. George B, 642 Louisiana Ave, Chester. W. Va. Gutierrez. Alvaro Mondragon, Laboratorio Quimico Nacional. Apartado 2577, Bogota. Colombia Gutmann. Paui F, 38 .-ir.geiica St, St. Lcuis 7. Mo. Guzman. Hector. Box 382. Rio Piedras. Puerto Rico Gzowski, Edward R. (S), 59 Drake St, Oakneld, N. Y. H Hackett, James W,, 3614 Kenwood Blvd., Toledo 6, Ohio Hackler, W. C.f (S), 106 Benton Annex, University- of Florida. Gainesville. Fla. Haecker, A. J, Jr, Georgia Kaolin Co, Drybranch, Ga. Haecker, Richard A, 3469 Lewis Ave, Long Beach 7, Calif. Haeger, E. H, Haeger Potteries, Inc, Dundee. 111. Haeger Potteries, Inc. (E. H. Haeger), Dundee. HI. Haff. Robert S, Jr, Norton Co, Refractories Div, Sales Engrg. Dept, Worcester. Mass. Hafner, Harold C, Bausch 3c Lomb Optical Co, Dept. IH, Rochester 2, N. Y. Hagan, M. A,T Midwest Research Institute, 4049 Pennsyl vania. Kansas City, Mo. Hagar, Donald.*! Box 328, Zanesville, Ohio Hagedom. E. C. Gen. Research & New Development Div, Owens-Illinois Glass Co, 1700 N. Westwood, Toledo 7, Ohio Hagenauer, Carl J, R. R. 1, Sarver. Pa. Hagerman. Robert S.t (S). 982 River Rd. Dormitories, Colum bus 10. Ohio Hagglund. Erik, The Kanthai Corp, Amelia Place. Stamford. Conn. Hagner. Fred F,, Phoenix Glass Co, Monaca, Pa. Hagy. Henry E. (J), Coming Glass Works Lab, Coming, N. Y. Hahn, William P,, 48 Fairview Ave, North Plainfield. N. J. Hahner, Clarence H,,* National Bureau of Standards, Wash ington 25, D. C. Halden. Frank A. (S), Graduate House, Mass. Inst, of Tech, Cambridge 39. Mass. Haldy, Norman L, 441 Stewart Ave, Columbus 6. Ohio Hall China Co, (M. W. Thompson), East Liverpool, Ohio 423 Hall, Arthur L., Cabot Carbon Co., Cabot Minerals Div., Wills- boro. N. V. Hall, E. B, M/S Bird Si Co., Ltd., Research Dept., Chartered Bank Bldgs., Calcutta. India Hall, Everson, Park Blvd., East Liverpool, Ohio Hall, F. P..* Pass fit Seymour, Inc., Syracuse 9, NT. Y. Hall. James L., 13-14 American Way, Menlo Park, Caiif. Hall, John T., Elysian Way, East Liverpool, Ohio Haller. P,, 319 Carterknowle Rd., Sheffield 11. England Halle:;, Crawford W..' /II Freeport Rd., R. R. 1, Route 28. Cheswick. Pa. Halloin, William G., 1218 Broadview Blvd., Brackenridge, Pa. HallswSrth, Stanley, Metal Porcelains, Ltd., Cornwall Rd., Smethwick 40, Staffs, England Halm, Louise, Union Franqaise des Produits, IS Rue de Milan, Paris 9', France Hamaker. M. L., Columbia Fire Brick Co., First National Bank Bldg., Canton 2. Ohio Hamilton. Edgar H., National Bureau of Standards, Washington 25. D. C. Hamilton, J. C., Owens-Illinois Glass Co., 601 36th Ave., Oak land. Caiif. Hamilton, Noble E,, Axel Johnsons Vag 78. Avesta. Sweden Hammer. Averiil J., Dept, of Chemistry, Bowling Green State University, Bowling Green. Ohio Hammer. Gunter, "Grange Moore," 21 College Rd., Newton Abbot, Devon, England Hammer. R.J Box 2212 (Nachla). Haifa. Israel Hammond, Leslie G., United Fireclay Products, Bathville Office. Armadale, West Lothian. Scotland Harr.mond-Kncwlton, Mildred. Knowiton Hiil, Mansfield Center, Conn. Hamr.er, Robert L., 422 Villanova Rd.. Oak Ridge, Tenn. Hampel. Richard J. (S), 401 E. Seventh St.. Rolla, Mo. Hancock Brick fic Tile Co. (J. Leo Child), Box 59, Findlay, Ohio Hancock. Robert T., Hancock's Jewelry Co., 2403 Montevallo Rd., Birmingham 9, Ala. Hancock, Russell A., S3 Water St., Auburn Sydney N. S. W,, Australia Hand, Thomas. Corhart Refractories Co., 1600 W. Lee St., Louisville 10, Ky. Hancwerk. Joseph H., Box H. University. Ala. Hanes, John G.. Republic Steel Corp, Warren, Ohio Har.ry. H. L., 3237 S. Garreld Ave.. Los Angeles 22. Calif. Hanks, Charles F.. Jr.. Kentucky-Tennessee Clay Co., 807 City- Savings Blag.. Alliance, Ohio Hanley Co. (Charles E. Bates), Summerville, Pa. Hann, George C. 367 Grove St.. St. Paul I. Minn. Hanna, H. H,t Pittsburgh Plate Giass Co.. Crystal City, Mo. Hanna, Henry N., Clinchfield Sand fi; Feldspar Corp, 618 Mercantile Trust Bldg., Baltimore 2. Md. Har.iv Ralph E.,* Square D Cp.. Mo idee Tr.julatifn Eiv.. Peru. Ind. Hanna. Richard (S). 3ox 3 B. Aifred. N. Y. Hannon. Richard C. (J), 1241 E. State St.. Saiem. Ohio Hanovia Chemical fit Mfg. Co. (Wr. Riehl), 1 W. Central Ave., East Newark, N. J. Hansard, W. Carey,! 2345 Cheshire Bridge Rd., N. E, Atlanta, Ga. Hansen. Charles V., Gibson Refrigerator, 515 W. Williams St., Greenville. Mich. Hansen, I. A., Fords Porcelain Works, Perth Amboy, N. J. Hansen. J. E.,* Ferro Corp., 5309 S. District Blvd., Los Angeles 22. Caiif. Hansen. Kenneth W. (S). 900 Vermont Ave., Pittsburgh 34. Pa. Hansen, Valdemar, Kastrup Glasvaerk, Ltd, Norrevoldg. 12. Copenhagen K. Denmark Hansen, Waldemar C, Universal Atlas Cement Co, Gary, Burlington Sta.. Ind. Hanson, G. G, Consolidated Feldspar Corp, 4436 N. Maple wood Ave, Chicago 25, 111. Hanson, Hans R,, 30004 W. Ten Mile Rd, Farmington, R. R, Mich. Harbert. Carl. Harshaw Chemical Co, 1945 E. 97th St, Cleve land 6. Ohio Harbison-Walker Refractories Co. (W. F. Rochow), 1800 Farmers Bank Bldg, Pittsburgh 22. Pa. Harder, Charles M,* New York State College of Ceramics, Alfred. N. Y. Harding, John Roy, 4 Greenway, Horsham, Sussex, England Hardings Co, Inc. (Harlowe Hardinge), York. pa. Hardinge, Harlowe, Hardinge Co, Inc, York, Pa. Hardy. Charles C, Compania Mexicana de Reiractarios. A. P. Green. S. A, Marina Nacional 2C0 Bis., Mexico City, D. F,, Mexico Hardy, Ronald G,t 5204 Catalina, Kansas City 3, Kan. Hargreaves. John (S). 26 Kirk Lane. Yeadon. Near Leeds, England Harker Pottery Co. (Robert E. Boyce). East Liverpool, Ohio 424 Harman, C. G," Battelle Memorial Institute, 505 King Ave., Columbus 1, Ohio Harnish. John D, Jr,,T Westinghouse Electric Corp, Derry, Pa. Harper. J. Fletcher, Globe-Union, Inc, 900 E. Keefe Ave, Milwaukee, W'is. Harper, Roderick L, Harper Electric rumace Corp.. 39 River St, Buffalo 2. N. Y. Harper. Wallace T. (S). 4 Vichy Rd, Rolla, Mo. Harr. VV. J,,T 7207 W. 15th St, Forest Park, 111. Harrell. George O, Box 15. Columbus 16, Ohio Harrington, Henry W, 132 Stafford Ave, Syracuse 6. N. Y. Harris, Arthur L.^Harris Clay Co, Dillsboro, N. C. Harris. David H, Shenango Pottery Co, New Castle. Pa. Harris, Henry M, 5226 Holly St, Seattle 8, Wash. Harris. Robert C, Box 424, Unadilla. N. Y. Harris, William J, Crossley Machine Co, Trenton 9, N. J. Harrison, Harold C,, Westinghouse Electric Corp, Liaison Eng, 7-L-34. East Pittsburgh, Pa. Harrison, W. N,* National Bureau of Standards, Industrial Bldg, Washington 25, D. C. Harrison, William B.T (J), 523 N. 8$th St, Milwaukee 13, Wis. Harsell, William B. (S), 345 Union Ave, Elizabeth, N. J. Harshaw Chemical Co. (Carl Harber:), 1945 E. 97th St, Cleve land 6, Ohio Hart, F. D, Temco, Inc, 4104 Park Ave, Nashville S, Tenn. Hart. Wade J,' 3211/, E. Seventh 5t, Marion. Ind. Hartford-Empire Co. Div, Emhart Mfg. Co. (F. Goodwin Smith), Box i620. Hartford 2. Conn. Hartford, Thomas J. (J), 22126 W. Lake Rd, Rocky River, Ohio Harth, P. E, 101 5. Meramec. Gaytan. Mo. Hartshorn. T. D,t A. J. Linoemann & Hoverson Co, Milwau kee 15, Wis. Hartwig, Frederick J, Jr, Babcock fi: Wilcox Co, Box 335, Alliance, Ohio Harvey, A. M,, Jr, Roanoke-Webster Brick Co, Box 1001, Roanoke 5, Va. Harvey, Edwin T, 314 W. McPike St, Vandalia, Mo. Harvey, Joseph S, Jr, 465 Centre St, Quincy, Mass. Hasko. Stephen. 47 Corry St, Madison 4, Wis. Hasselbach. William. Libbev-Ower.s-Ford Giass Co, 1701, E. Broadway, Toledo 5. Ohio Hassctt, William A, 1315 Woodingtor. Rd, Baltimore 29. Md. Hatch. Robert A, Bureau of Mines, Electrotechnical Lab, Norris. Ter.r, _ Hathaway. A. J, S721 Pershing Ave, Niagara Falls. N. Y. Hathaway, Isaac S, 131S Tuttle Ave, Montgomery. Ala. Hauser. Richard E. (S). 351 Moselle St, Buffalo 11. X. Y. Hauth. Willard E, Jr, 409 Warminster. Hatboro. Pa. Havekotte. Waltner L, Firth Sterling, Inc, 3113 Forbes St, Pittsburgh 30. Pa. Haveil, Richard F, 1925 N. 74th Ave, Elmwood Park. III. Havens. Irvin r. ;'J\ R. R. 1, Belfast. N. Y. Haviland fit Co. (Theodore Haviland II), 270 Park Ave, New York 17. N. Y. Haviiand. Theodore II. Harilar.d & Co, 270 Park Ave, New York. N. Y. Hawes, Samuel A, 301 N. E. Sixth Ave, Mineral Wells, Texas Hawk, Elwin A, Hawk Laboratories, Inc, R. R. 1, East Rochester, Ohio Hawke, C. E, Carborundum Co, Perth Amboy, N. J. Hawkes, John H. (S), Box F F. Alfred. N. Y. Hawkins. James M, Buffalo Brick Corp, 448 Franklin St, Buffalo. N. Y. Hawkins. Robert J,* 411 Fifth Ave, Columbia. Tenn. Hawks. Ralph L, 1206 S. Luna St, San Angelo. Texas Haws Refractories Co, (E. E. Siick, Jr.), 407 Main St, Johnstown, Pa. Hay. John. 58 Westholmes Gardens. Musseiburgh. Midlothian, Scotland Hay, Joseph. 300 Toler, Malvern. Ark. Haydon, Mary P, 106 Ogontz Lane. Oak Ridge, Tenn. Hazel-Atlas Glass Co. (Francis C Flint), 15th & Jacobs Sts, Wheeling. W. Va. Hazel. John J,,* Republic Bldg, Rm. 1526. Republic Steel Corp, Cleveland 1, Ohio Hazen, E. J,f R. R. 2, Ford City, Pa. Healy, James H, 4511 N. Sherman Blvd, Milwaukee 16. Wis. Heath, Chadwick N, General Shale Products Corp, Johnson City, Tenn. Heck. F. G, E. J. Lavino & Co, 1528 Wainut St, Phila delphia 2, Pa. Heddeil. James V, 2328 Hathaway Ave, Alhambra. Calif. Hedden, Walter A, Battelle Memorial Institute. 505 King Ave, Coiumbus 1, Ohio Hedges. Lee M,, R. R. 4. Cedar Grove Rd, Somerville. N. J. Hedin. Claes O, Maiardalnes Tegelbruk, Stockholm 3, Sweden Ceramic Bulletin Hedquist. Alfred J., Apartado Postal 525, Guadalajara. Jalisco. Mexico Heebner. John C,* 5507 Kennedy Ave., Cincinnati. Ohio Hefti, Franz, c/o Zurcher Ziegelcien, Talstrasse 83, Zurich, Switzerland Heiligman, H. A.,*T E. J. Lavino and Co., Box 29, Norristown, Pa. Heimsoeth. Wemer M., Farbenfabriken Bayer (22-C), Lever kusen-3ayerwerk, Germany Heincl. Ravmond A.,* 4917 43rd St. N. W, Washington 16, D. C. Heischman. Frederick E-. 106 S. Adams St., Fostoria, Ohio Heisey, A. H, & Co. (T. C. Heisey), Newark, Ohio Heisey, T. Clarence, A. H. Heisey & Co., Newark Ohio Helander, Henning, Gullmarsvagen 12, Enskede, Sweden Helget, J. A., Hufford Machine Works, Inc., 1700 E. Grand Ave., El Segundo, Calif.' Heller. Enrique, c/o Casilla 406, Lima, Peru Hellriegel. Edgar J., 986 Hale St.. Apt. B. Pottstown, Pa. Helm, David F,, Mellon Institute, Pittsburgh 13, Pa. Helser, Perry D.,*T Methodist Bldg., Apt. 303, 100 Maryland Ave. N. E,, Washington 2. D. C. Helz, Armin W., 20 Maryland Ave., Gaithersburg. Md. Hemberg. Per, Surte Glasswork, Surte, Sweden Hemphill. R, W., Sr., Colonial Insulator Co., 973 Gran: St.. Akron 11. Ohio Hemphill. R. W., Jr.. 22 S. Pershing Dr., Akron, Ohio Kemsteger, Samuel E.,T 1690 Birmingham Blvd, Birmingham. Mich. Henderson, Frederick C,** Royal China, Inc, Sebring, Ohio Henderson, James L, Jr, Robinson Ventilating Co., Zelien- ople, Pa. Kendren, Robert R,t 105 Bank Ave, Riverton, N. J. Hendryx. Dwight B,, 6621 Darlington Rd, Pittsburgh 17, Pa. Heniy, H. Maynard, 1376 River Ave., Pittsburgh 12. Pa. Henrar, j. M. G, N. V,- Porselein en Tegelfabriek MOSA Maastricht, Meerssenerweg, Maastricht. Netherlands Henry, Edward C,** Div. of Ceramics, Pennsylvania State College, State College, Pa. Henry, Frank R,,* Simonds Worden White Co, N. Summit St. I Nepiey Place. Dayton 7. Ohio Henry, Georges, a/s Union des Verreries Mecaniques Beiges, 41, Qua: de Brabant. Charleroi. Belgium Henry, Kenneth M,* Kimble Glass Co, Box 1035, Toledo 1, Ohio Henry, O. James, Pittsburgh Plate Glass Co, 3, Creighton, Pa. Hrnse. O. ?, Eagle Picher Co, American Bldg, Cincinnati 1, Ohio Hensier. J. R,, IH Dept, Bausch & Lomb Optical Co, Rochester 2. N. Y. Henson. Charles W,, Norton Co, Worcester 6, Mass. Henson. 'V. H, 65 Whitman Rd, Worcester 5. Mass. Henwood. Reginald J, 944-1 Lvnnhaven Rd, Oeveland 29. Ohio Hepplewhite. J. W,,*t Box 260. East Liverpool, Ohio Herbert, John S, 174 Third Ave. N,, Nashville 3. Tenn. Herbert, Paul R,, Sparta Ceramic Co, East Sparta, Ohio Herger, Howard C, Pierce Glass Co, Port Allegany, Pa. Herko. Edward (J),* 263 Grand Ave, Rochester 9. N. Y. Herman, Adalbert, Distillers Corp, Ltd., 1430 Peel St, Montreal. Que, Canada Herold, Paul G,** Missouri School of Mines, Rolla, Mo. Herring, Leon B. (S), Box 143, Dillon, S. C. Herron. Robert H. (J). 1634 N. Ironwood Dr, South Bend. Ind. Hertzell, E. A, 1111 Chestnut St, Dover, Ohio Hess. F. B, Brockway Glass Co, Inc, Broclcway, Pa. Hessinger. Philip S.f (j). Box 8448. Wright Air Development ^Center. Wright-Patterson AFB. Dayton. Ohio Keuer, Russell P,,* General Refractories Co, 1520 Locust St, Philadelphia 2. Pa. Hewitt. Arthur E, Spode Works, Stoke-on-Trent, England Hewitt. L. C,,*t Laclede-Christy Co, 4705 Ridgewood Ave., St. Louis 16. Mo. Hewlett, James T, Ingram-Richardson Mfg. Co, Frankfort, Ind. Hicks, James C, 460 Cotton St, Menlo Park, Calif. Hicks. John F. G, 131 Hornby Dr, Painted Post, N. Y. Hicks, Robert G, 70Vt N. Madison Ave, Greenwood, Ind. Hiemaux, Marcel, 2, Lgue rue d'Argile, Anvers, Belgium Higgins, Ray, 191 Overlook Ave, Wadsworth. Ohio Higgins. Waldo W,*t 655 S. Harrison Ave, Kankakee, 111. Higgs. Harold P,, Jefters Electronics Div, Speer Carbon Co, DuBois, Pa. Hinnm, John W, Co. (Robert J. Stone), 24 State St, New _ Y ork 4, N. Y. Hildebrand, David (J), R. R. 1. c/o Gold Point Marina. Hixson, Tenn. VOL. 31, No. 10 (1952) Hill. Ercell C,*T O. W. Ketcham. Crum Lynne, Pa. Hill, John R,, 307 Overlook Dr, Coffeyville, Kan. Hilling. James L, Jr. (S), 129 Maple Ave, Altoona, Pa. Hinckley, Arthur T, Oldbury Electro-Chemical Co, Niagara Falls. N. Y. Hind, Stanley, "The Mount," Etruria Rd, Basford, Stoke- on-Trent, England Hindes. Stanley V, 88 Union Ave, Pittsburgh 5, Pa. Hines. Robert A. (J). 1722 Dei Norte Ave, St. Louis 17, Mo. Hinkins, E. A, Tygart Valley Giass Co, Washington, Pa. Hintze. Wollmar. W : son, Agatan 28 A, Bromolla 2. Sweden Hirssig, Car! F, 4554 Westway, Toledo 12, Ohio Hiscock, Hariey J, Fuller Merriam Co, Box 69, West Haven, Conn. Hitchins, R. A, National Refractories Co, Inc, 17th Floor, Lewis Tower Bldg, 225 S. 15th St, Philadelphia 2, Pa. Hoagbin, Joseph E, 1200 W. Cross St, Ypsilanti, Mich. Hoare, Henry A, 2655 Sharondale Dr. N. E, Atlanta, Ga. Hockaday. R. B. (S), General Delivery. Richlands. Va. Hocker. Charles R, C. Richard Hocker Co, c/o Duriron Co, Dayton, Ohio Hocking, William J, 1612 Pennsylvania Ave, East Liverpool, Ohio Hodek, F. E, Jr,* 2700 N. Karlov Ave, Chicago 39, 111. Hodgaon, Frank B, American Lava Corp, Chattanooga. Tenn. Hodson. George N,, The Hall, Wymeswold, Near Lough borough, England Hoehl, Joseph W, Wolverine Porcelain Enameling Co, 3350 Scotten Ave, Detroit 10. Mich. Hoeppner, W. L, Latchford-Marble Glass Co, Box 4707, Flor ence Branch. Los Angeles 1. Calif. Hoffman, Carl R. (J), 1308 Seventh St, Moundsville. W. Va. Hoffman, Lewis C. (S). 213B Thomas Dr, Monroe Park Apts, Wilmington, Del. Hoffman, Sidney C, 238 Fourth St, St. Marys. Pa. Hoffner, Jere R, T. C. Wheaton Co, Millville, N. J. Hofstetter, G. W,, Ferro Corp, 336-338 N. Central Ave, Chi cago 44, III. Hogan, Thomas W, Flintridge China Co, 380 S. Raymond Ave, Pasadena 2, Calii. Hogendobler, H. R, Owens-Corning Fiberglas Corp, Toledo 1, Ohio Hogenson, William, Chicago Vitreous Enamel Product Co, 1427 S. 55th Court, Cicero 50, 111. Honmann, Frederick R, 1012 Parkview Ave, New Kensing ton, Pa. Hoidener, Irwin K,,* Hill Top Tr. Ct, Bedford, Ohio Holl, Barton A, Logan Clay Products Co, Logan, Ohio Holl. Barton S,r 479 E. Main St, Logan, Ohio Holley, Kenneth E, 113 Pritchard Ave, Corning. N. Y. Hoimes, John M,, Lee Brick & Tile Co, Sanford. N. C. Holmes, Lyle A, Apt. 3, 49 Parke St, Grafton 5. Pa. Hoimstrom. Joseph H.* fJ). 4316 Cedar Ave, Minneapolis. Minn. Koischer, H. H,* Owens-Illinois Glass Co, Administrative Research, I7C0 Westwood Ave, Toledo 1, Ohio Holst, Tage, Vinkelvej lo. Kongens Lyngby, Denmark Holterhoff. A. Gray. 307 E. Fourth St, Cincinnati 2. Ohio Hommel, O, Co. (E. M. Hommel), Box 475. Pittsburgh 30, Pa. Hommel, E. M,, O. Hommel Co, 209 Fourth Ave, Pittsburgh 30, Pa. Honsberg, Werner. Apartado 508. Mexico D. F, Mexico Hood. Clyde. 1800 Keith Bldg, Cleveland 15. Ohio Hood, Harrison, P, 260 Delevan Ave, Coming, N. Y. Hooper, Bradford. 5 Point O'Woods Lane. Darien. Conn. Hoover, Charles H, 3413 Ramona Ave, Baltimore 13, Md. Hopkins. Robert W, Calumite Co, Box 151. Hamilton, Ohio Horak, William,** 223 Raymond Rd, West Hartford 7, Conn. Horn. William F. (S). Div. of Ceramic Mineral Industries. Pennsylvania State College. State College. Pa. Homnscner. Harvey W, 377 W. Brockton, Royal Oak. Mich. Homing, Roy A,** Armstrong Cork Co, Lancaster. Pa. Homung, Martin R..t 140 E. Sheridan Ave, New Castle, Pa. Horsfall, John C. (J). 124-C Carr Dr, Glendale 5. Calif. Horton. Paul B,t Locke Dept, General Electric Co, Box 57. Baltimore 3. Md. Hossenlopp. Arthur M..+ 28 Kendall Ave, Maplewood. N. J. Hostetler. Stanley F, Univis Lens Co, 401 Leo St, Dayton 1. Ohio Hostetter, J. C,** 1561 Dale Ave, Winter Park, Fla. Houchins, Henry R,, Carborundum Co, Niagara Falls, N. Y. Hough, James T. (S), 656 Llewellyn Place. Charlotte, N. G Houghton, Amory, The Knoll, Corning. N. Y. Houska, Joseph L, 707 Noble St, Norristown, Pa. Housman, George S, Box 17, Norristown. Pa. Houze. Armand L, Sr, L. J. Houze Convex Glass Co, Point Marion, Pa. Houze. Armand L, Jr, L. J. Houze Convex Giass Co, Point Marion, Pa. 425 ijait. L. J.. Convex Glass Co. (Armarnl L. Houze. Sr.). Poim ..Marion. Pa. "Jowat, Waller L.,* 85 Hopping Ave.. Staien Island 7, N. V {'watson. John. 189 Kingsbury Ave.. Coming, N. Y. "^111, Glenn, Bldg. 5-A, Apt. 3. Redficld Village. Metuchen. ^0"'e. Eiroy E.,' Chicago Vitreous Enamel Product Co- 1401-- S. 55th Court. Cicero 50, 111. _ r*Bwer. Lawrence D., Jr..1 Raybestos Div.. 73 E. Main nt~ Strat- >.,',rd. Conn. f}*er, R. S., Allen Bradley Co., Milwaukee, Wis. flwie. Thomas W.. Campbell & Co., (Roughcastle) Ltcf- Roughcastle Works, Falkirk. Scotland Wet. Eugene, R. R. 2, Box 332, Tarentura. Pa. JJrbacelc. Emil C. (5), I833; Dolman St- St. Louis 4, Mo. Ku-hua, 65 Austin Rd. Ground Floor, Kowloon, Hong* uong '`"bbard, Arthur E,, F3, Marine Gate, Marine Parade, ..Brighton 7, England 2uher. George S. (J ). 536 Walker Ave.. Baltimore 12. Mil. fjuber, Harold V., 1300 Rancho Rd.. Arcadia. Calif. ubler.^ William G.. Lakefield Research, Ltd.. 3ox 430. -bJkeneld, Ont- Canada Wlson. Charies 74 N'etvton St.. W. Bovlston. Mass. ^uettigr. Fred RJ (J). Apt. 4. 14-31 Chandler Dr.. Fair Lawn. riuficjt. Harold W.. Westinghouse Elect. Corp- Electronic -- 'ube Div., 3ox 284. Elmira. N. Y. 8ord Machine 'Works, Inc. (J. A. Helget). 1700 E. Grand -^ve.. El Segundo. Calif. -ughes, George 3- 710 Plum St.. Erie. Pa. jV*Shes, Walter M.,t 334 Putnam Ave- Zanesville, Ohio -^ghes, Wiiliam A., R. R. 2, Nottingham. Pa. o'1!- William L. C- 2316 S. Washington St.. Marion. Ind. ij Pottery Co- (J- Brannon Hull), Crooksville, Ohio 'i'l. Alan R. (S'). Canadian Dresden Craft. 230 Madison St-ht. James. Man.. Canada u , J- Brannon. Hull Potterv Co.. Crooksville, Ohio bullock. D. K. {Si. 470 11th St.. S. F... Medicine Kat. Alta.. t.'-inada -Ulse. Cnaries O- (Si, 5337 Ing. Sq.. Box 361. Scott AFB. 111. y-menik. Michael, jr. (S'). 20613 W. Chicago. Detroit 29. Mich, hmmel, Fioyd A., School of Mineral Industries, Pennsyl vania State College. State College, Pa. :;-mmei, Richard. 615 Giympia Rd- Pittsburgh 11, Pa. pummel. Rov. 4313 Grantley Rd- Toiedo 13. Ohio -u"""ers. William S.. Jr.. Mellon Institute, 4400 Fifth Ave- j, ttsburgh 13. ?a. `'fpipHrcy, Kenneth F., 67 Crestwood Ave- Kitchener, Ont-- Linada 'J'nphrey. Richard A.. Mvqalex Corp. of America. 60 Clifton dlvd.. Clifton. N. J. n^Ph--.-s. R. D.. Misrissinpi Glass Co- 200 Fifth Ave- H`%ew York 10. N. Y. "Oftphryes Mfg. Co. (W. G. Moore). 201 E. Fifth St- Mans-- heid, Ohio Jfnsicker, Harold W., 1649 Elberon Ave.. East Cleveland 12, HUh,0_ t,uht, Frank S- 2494 Page Dr., Altadena, Calif. "ft, George, General Steel Wares, Ltd- 199 River St- ,,`oronto, Ont- Canada j,uht, Herbert J.. Kimble Glass Co.. Vineland. N`. J. ?nL John F.,t Orefraction, Inc.. 7425 Thomas St- Pittsl,"llrgh 8. Pa. "Unrv /-t__ j,aPpert. Paul A., 114 Hubbell St., Canandaigua, S. V. ^'trd, Burgess M- 506 14th Ave- New Brighton, Pa. pUrsh, Ralph K-*t University of Illinois, Urbana, 111. r*t, Edwin J- Research Dept- General Ceramics & Steatite -k-oi-p^ Keasbev, N. J. ^utch, Herbert T.. Box 9073. N. Station. Newark. N. J. i^tchison, Clark, 709 E. Armstrong St, Frankfort Ind. T,u,chison R. C-* R_ R, l, Easton Ave., Bethlehem, Pa. Gienn A- Ferro Corp., 4150 E. 56th St- Cleveland 5, H Uh, Gordon M- Canadian Pacific Railway, Rm. 703, Wihdt,sr Sta- Montreal. Que., Canada t^k, L. G- Huyck Construction Co- 2946 N. 78th Court jtlmwood Park 35. 111. ot*' t^'cis. Aktieselskabet Bing 3: Gronda'nls Porcellaensiabrik. ^ 5. Valby Langgace. Copenhagen. Valby. Denmark Edmond P.. Dept, oi Geology. Brigham \oung LniVarsity, Provo. Utah Collin/ 381 Oxford St.. Worthington. Ohio *de, Reed W,, 84 Mountain Ave.. Summit. N. J. *2q Hyland. J. A- Pacific Coast Borax Co.. 2295 Lumber StHyCnheisc,agFora1n6.kilJl..f (J), 4 Clyde Rd- Watertown 72, Mass. Hyslop, Joseph F., "Dromore." Major's Loan, FaJkirk. Scot land I lander. J. Richard. 2711 Bowmom Dr.. Beverly Hills. Calif. Ichikawa. Yoshio (S;. Box 102. Alired. N. Y. ilirig, Allen C- Jr.. 222 Decatur St- Corning. N. Y. lies. Ramon R- 2223 St. ,'ames Ct.. Owetisooro. Kv. lliff. John W- 2500 Wisconsin Ave. N.W.. Carillion House. Washington 7. D. C. Illing, Amo M- 5412 Laconia. Cincinnati 37, Ohio Illinois Clay Products Co. (Otis L. Jones), 68 N. Chicago St- IllyJnol.ieAt,le11x1i.s V. IS). 185 Bevier Rd- University Hgts.. New ImBhroufnf.swEidckw.arKd. JJ-. United States Glass Co., Glassport, Pa. lmmediato. Robert R. t t J 1. 40 Caryl Ave.. Yonkers 5. N. Y. Imperial Glass Corp. (C. J. Uhrmann), Beliaire, Ohio Indian Ceramic Society. Dept, of Ceramics, Benares Hindu University, Benares, india Indiana Glasa Co. (Charies L. Gaunt), Dunkirk. Ind. Industrial Ceramic Products. Inc. (W. E. Cramer), 965 W. IndFuifsthtr.ieAsveB, rCsosliulemirbauss 1A2r,tiOgohsio Refratarios S/A (Nelson Franco). Rua 15 de Novembro. 288 5" S/50679, Sao Paulo. IndByrak,zilAlber. D. (5), Ceramic Engineering Dept- North Carolina State College, Raleigh, N. C. Ingersoll, Harry. 5429 N. Tyier Ave.. Temple City, Calif. Ingham, David. 2794 St. Clair Ave- East Liverpool, Ohio Insley, Herbert,* National Bureau of Standards, Washing Instoleny.25R. oDbe. rtCH- Champion Spark Plug Co.. Ceramic DivIn8te5r2n5atBiountlaelr CAevrea.m. iDc eMtroiniting11,. LMtdic-h.(L. D. MacKie) 54 Well IntinegrntoantioSnt.alWC.. laTyoroMnatoc.hOinuetr.y. CCaona. da(R. H. McElroy), 1145 IntBeornlaantdioenraAl veC.o, mDmaiystsoionn. Oohnio Giass. E. P. Dudaing, Re search Laboratories. General Electric Co.. Ltd- Wembley, IreMlainddd.leJsoehxn,. EInntgelarnnadtional Tin Research Council. Fraser Ru.. Greenford. Middlesex. England. Ironton Fire Brick Co. (J. H. Rickey. Jr.), Box 124, Ironton. IrvOinlieio. George C-C Canadian Carborundum Co- Ltd.. Niagara IrwFianll,s,JoOsnept-h CTa,,na1d6a18 Elmwood Ave., Lakewood 7, Ohio Ir-vin. Philip P,, ?r::*rs Supply Cc.. East Liverpool. Ohio Irwin, William W, Potters Supply Co- East Liverpool, Ohio Isaacs. Riciiard P.. 78 Eimwoori Dr.. Livingston. N. J. Isagawa. Jun. Nippon Toki Kaisna. Ltd.. 1. Noriukcshiuaashi. Nisliiku. Nagoya. Japan Isenhour. C W.. Jr.. Box 1249. Salisbury, N. C Isenhour. John H-* 215 Confederate Ave, Salisbury, N. C. Isolds. Virgtiio. Ceramics Sao Caetano S/A. Caixa Postal 278. ItsScahonePr,auRloo.beBrrt,azTial nnenrauchstrasse 106, Zurich 58. Switzer Ivelasn. dJohn B- 4 Beal! St.. Frostburg. Md. J Jackson Vitrified China Co. (Philip R. Distiliator). 2 West St- Pelham Manor 63. N. Y. Jackson. A. Curtis. *'730 S. Clayton St- Denver. Col. Jackson. James, "Ashgrove," St. Andrews Ave- Bothwell, JaLckasnoanr.k.LS. cPot-laMndid-West Abrasive Co- Owosso. Mich. Jackson. Wharton. Georgia Kaolin Co., 433 N. Broad St- JacEkliszoanb.eWth il5li.amN. MJ.- II. 32 Oakland St- Watertown. Mass. Jacob, Bernard T- National Crucible Co- Philadelphia 18. Pa. Jacobi. Paul. Joseph Dixon Crucible Cu- Jersey City. N. J. Jacobs. Charles W. F- 19 A Longmeadow Rd- Eggertsville Ja2co3.bsN, .HY-. Box 117, Vereeniging, Transvaal, Union of South JaAcofbrisc.aLouis J- Ramtite Co- 2563 W. 18th St- Chicago 8, III. Jacobs, Richard A- Brockway Glass Co- Inc., Brockway, Pa. Jacobson. Edwin (S). 102 S. Gregory-. Urbana. 111. Jacoby. William R. (S). 215 Adelaide Ave.. Highland Park. N. J. Jaffe. Bernard.' 1446 Kanawha St.. Hyattsville. Md. Jaimke. O. C..T 8 Parker Are.. Maplewood. N. J. Jansma, Frank. B. F. Drakcnield i Co. Inc.. Washington. Pa f cmwir RltlLETlN' janson. Karl A. (J). Angeleno Tile Curi>.. 17U6 Roxtun l.ane. North Redondo Beach. Calif. lanssen. William F.. 15 Oak Ridge Rd,, Basking Ridge, N. J. jasani. Mahendra R. (S). 35 Ghod Bunder Rd.. Bombay 24, India Jasper. Stanley J. (Si. General Delivery. Altred. N. z. Jeffers. Phillip Eugene (J). Box 125. Gardner. 111. Jeffrey, Benjamin A.. Box 32, Tumacacori, .Aria. Jeffrey, G. H.. 1828 Arch St.. Philadelphia 3. Pa. lelinek. James W. (S), 1203 Seventh Ave.. Marion, Iowa Jenks, C. E, W. S. Tyler Co., 3615 Superior Ave., N. E., Cleveland 14. Ohio lennings. James W, Quaker Silver Co.. N". Attleboro. Mass. Jensen, Edwin K.. 3654 Old York Rd., Baltimore 18. Md. leppson, George N,* Norton Co., Worcester 6, Mass, jeppson. John. 40 Westwood Dr.. Worcester. Mass, jero. Parker. 119 Riverview Ct.. CMR 158. Peoria Heights. 111. Joeclcel. Stanley V, American Fused Quartz Co., Dover. N. J. Johai-Manville Sales Corp- (J, C. Crawiord, Jr.), 22 E 40th St, New York 16, N.. Y. Johns. William D. (S). 234 Natural History Bldg.. University of Illinois. Urbana. 111. Johnson, Alexander H., H. L. Brisbane & Wunderlich, Ltd., Lord St., East Perth, West Australia Johnson. Alton E.,T 2062 N\ Ludinglon Ave.. Wauwatosa 13. Wis. Johnson. Arnold G.. The Sealtron Co.. 9701 Reading Rd.. Cincinnati 25. Ohio Johnson, A. L.,* Universal-Rundle Corp., Box 960, New Castle, Pa. Johnson, A. M., Ross-Tacony Crucible Co., Tacony, Phila delphia 35, Pa. Johnson, Boyd M., Carborundum Co., Box 268, Perth Amboy, N. J. Johnson. Delmar A.. 94 E. Third St.. Coming. N. V. Johnson, F. G,, Johnson Brothers (Hanley), Ltd., Hanley, Stoke-on-Trent, England Johnson, F. H.. Summitville Face Brick Co., Summitville, Ohio Johnson. Fred H., Jr,, Summitville. Ohio Johnson. George E.. Jr..' WADC Box 8645. Area "B." Wright Patterson AFB. Ohio Johnson. Gordon H.. 5425 Knollwood Dr.. Apt. 4. Parma 29. Ohio Johnson. Harold C.. Corning Glass Works Laboratory, Carp ing, N. Y. Johnson. J. A.. Service Engineers, Ltd., Leek New Rd.. Co bridge. Burslem, Stoke-on-Trent, England Johnson. James R,,r 111 Portland Lane. Oak Ridge, Tent:. Johnson, Lee J., Alexander Rd., Box 43, Princeton Junction, N. J. Johnson. LeRoy A.. 1206 Cleveland St.. Evanston. 111. .Johnson, Maurice H., 1812 N. Delco Ave.. El Monte. Calif. Johnson. Paul V.. Structural Clay Products Research Founda tion, 20 N. Wacker Dr.. Chicago 6. 111. Johnson. Peter D, 1924C I-ago Place. Seattle 55. Wash. Johnson. Raymond D.. 255 S. Fourth St.. Aurora. III. Johnson. Richard C. (S). 4 Perine St.. Dansville. N. Y. Johnston. J. G.. The Leeds Fireclay Co.. Ltd., Wortley. Leeds 12. England Johnston. James K.. R. R. 5. Hagerstown. Md. Jones. Cecil M.t II (J), 2814 Jordan St., Fleming Heights, Augusta. Ga. Jones, Edgar, 426 Old Lancaster Rd.. Kaveriord, Pa. Jones, Frank L.. Windsor Rd., Fox Chapel, Pittsburgh 15, Pa. Jones. George A.. 1901 E. 25th St.. Muncie. Ind. Jones. Harlow G.. Mid West Abrasive Co.. 510 S. Washington St.. Owosso. Mich. Jones, Howard E,, Jr., 19150 Robson, Detroit 35, Mich. Jones. Maynard J,, Pfaudler Co., 1000 West Ave., Rochester 11. N. Y. Jones Metal Products Co., West Lafayette, Ohio Jones, Otis L., Illinois Clay Products Co., 68 N. Chicago St, Joliet. IIL Jones, Paul R, Mineral Industries Bldg, West Virginia University, Morgantown, W. Va. Jones, Richard E, Pittsburgh Plate Glass Co, Research Laboratory, Creighton, Pa. Jones, Robert E.. 2109 S. Hillside St.. Birmingham 5, Ala. Jones. Robert O, Box 3, Gabbs. Ncv. Jones. Lt. Col. Rodney A., Headquarters ARDC. Box 1395. Baltimore. .Md. Jontz, Melvin L,, Melvin L. Jontz Co, 5028 Alhambra Ave, Los .Angeles 32, Calif. Jordan, Duane R. (S), 220 Belmont Ave, Oneida, N. Y. Jordan. John W,, Baroid Sales Div.. National Lead Co, Box 1675. Houston 1. Texas. Jordan, Roy E, Jr, Mosaic Tile Co, Zanesville, Ohio Vol. 31, No. 10 (10.52) Jordan, Thomas B, Mosaic Tile Co, 829 N. Highland Ave, Hollywood 27, Calif. Jordan. William M, Weber Dr, R. R. 11. Pittsburgh 15, Pa. Joseph, A. David (S). Box 3, Alfred. N. Y. Jova Brick Works (J. L. Jova), Rosetcn, N. Y. Jova, J. L,, Jova Brick Works, Roseton, N. Y. Joyner. Bobby L. (S), 332 Angier Ave, Raleigh. N. C. Julian, H. A. Demuth Glass Works. Inc, Box 629, Parkers burg Div, Parkersburg, W. Va. K Kadey, Frederic L, Jr, Apt. 7-A, 181 Mercer St, Somerville. N. JKaelkt, E. K_, 411 W. Calhoun St, Macomb, 111. Kahlson. W. S, General Electric Co, Lamp Dept, Pitney Glass Works, Nela Park 12, Cleveland Ohio Kallauner. Otakar. c/o Statni vyzkumny ustav silikatory, Ziz- kova 7. Brno. Czechoslovakia Kallstedt. C. H,, Public Service Co. of Northern 111, 50 Fox St, Aurora, 111. Kallup. Charles. Jr. (S). Box 716. Alfred. N. Y. Kalman. Frank R.' (S), 1709-C Aberdeen Rd, Baltimore 4, Md. Kalousek, George L,, 2633 Merrimac Blvd, Toledo 6, Ohio Kamic'n, Barnet Z, 11 Garwood St, South River, N. J. Kane. Daniel F,, Jr,, RCA Victor, 415 S. Fifth St, Harri son, N. J. Kantner, Ogden A, 562 Cleardale Ave, Trenton 8. N. J. Karkhanavala. M. D. (S), Box 254. State College, Pa. Karnes. Walter F. (J). Box 251. Dov-r. Ohio Kast, Henry G. fS), Box FF, Alfred, N. Y. Raster, Vernon L,t Three Oaks, Box 84. Jackson. Mo. Kastcnbein. Emest L. (S), 215 Orient Way, Rutherford, N. J. Katnack. Fred. Jr. (S). Box CC. Alfred. N. Y. Katz. Joseph M,, General Ceramics & Steatite Corp.. Crows Mill Rd.. Keasbev. N. J. Kauffman. John R,*f Tuttle & Kift, Inc, Subsidiary, Ferro Corp.. 1323 N. Monitor Ave, Chicago 39. 111. Kautz. Karl.** 713 Ohio-Merchauts Bldg, Massillon. Ohio Kawaguchi. Tad.t Republic Steel Corp, 6100 Truscon Ave, Cleveland. Ohio Kay, Wiiliam T, E. J. Bartells Co, 1212 Sixth Ave, S, Seattle 4, Wash. Xayser. Julius A, Gladding, McBean & Co, 1275 Harrison St, San Francisco. Calif. Keaney, J. C, 1201 Banksville Rd, Pittsburgh 16, Pa. Keat, Paul P. fS). Ceramics Bldg, Rutgers University. New Brunswick, N. J. _ Kebler, Leonard, Ward-Leonard Electric Co, Mt. Vernon, N. Y. Keeler. Bradley 3, Brad Keeler Artwares. 2940 Delay Dr, Los Ar.geies 4J, Calif. Keener, Harry J, General Color & Chemical Co, Inc, Box 7, Minerva. Ohio Keith. Wendell P.J 2227 Floral Dr.. Whittier. Calif. Kellenberger. George E, Niles Glass Works. 403 N. Main. Niles. Ohio Keller. Francis. Pfungen. Switzerland Kelley, J. A, Zonolite Co, Travelers Rest. S. C. Kelly. George D,,* (J ). 622 Center St, St. Marys. Pa. Kelly, Hal J, 4714 20th N.E, Seattle 5. Wash. Kelly, John V.. Kaiser Steel Corp, Box 217, Fontana, Calit. Kelly, Joseph F, 301 Braddock Ave, Lansdowne. Pa. Kelly. Wiiliam J, Box 188. Hondo. Texas Kelsey, V. V..* Dominion Minerals Inc, Pinev River. Va. Kelton. Stanton C, Jr.. Rohm and Haas Co.. Bristol. Pa. Kemp. John A, Jr. (J). 2716 Eldarado St, Torrance. Calif. Kempt, William C,! 28 Homer Place. Metuchen, N. J. Kenagy. William L,t Huntingdon Valley, Pa. Kendrick. Thomas B, Lancaster Letts Co, 220-226 W. Main St, Lancaster. Ohio Kenmotsu. Kenneth (S). 1310 E. 62nd. Chicago 37. 111. Kennaday, Clinton R, R. R. 4, New Castle. Pa. Kennedy. Richard W. (J), The Star Porcelain Co, Muirhead Ave, Trenton. N. J. Kent. Joseph P.J 247 Starr St, Brooklyn 37, N. Y. Kent, N. Johnson,! Johns-Manville Sales Corp, 22 E. 40th St, New York 16, N. Y. Kent. William B,f W. S. George Pottery Co, Canonsburg. Pa. Kentucky Clay Mining Co. (W. J. Watkins), Mayfield, Ky. Kentucky-Tennessee Clay Co. (Chester Gulick), 807 City' Savings Bldg, Alliance. Ohio Kenyon. Clark. Frenchtown Porcelain Co, Frenchtown. N. J. Kepka. George M,, Braun Corp, 226 E. 15th 5t,, Los Angeles 21. Calif. Keplinger, Robert B,*t 219 17th St, N.E, Canton 4, Ohio Kerr, Charles H,* 2861 Chatsworth Blvd, San Diego 6, Calif. 427 Kerr, W. Raymond,*! Armstrong Cork Co.. Box 441, Beaver Falls. Pa. Kersnner, William G.J 117 S. 14th St., Olean,- X. Y. Kibler, H. W., Southern Potteries, Inc., Box 279, Erwin, Tenn. Kiehl, Harry R,, 223 Chemung St., Corning, N. Y. Kiesow, Paul (J), 21 Court St.. Bellmore, L. I.. X. Y. Kilgore Ceramics Corp. (D. H. Walkup), Box 1619, Kilgore, Texas Kilimar. Henry M..T 1U7 Park Lane. Fair Haven. X. J. Kimble Glass Co. iH. R. Black). 2626 Dorr St., Toledo, Ohio Kimes. A. \V,, National Glass Budget, 800 Grogan Bldg., 541 Wood St.. Pittsburgh 22, Pa. Kimpel, Raymond R. (S), 104 Franklin St., Urbana, 111. Kimpei. Robert F.. 1138 X. Alameda Ave.. Azusa. Calif. King, Burnham W'., Jr.,*t 2564 Welsford Rd., Columbus, 12, Ohio King, Charles B- 189 Cedar St., Corning, N. Y. King, Donald F., Harbison-Walker Refractories Co., Windliam Works, Windham. Ohio King. Maxon H.. Hill Blvd., East Liverpool. Ohio King. R. M.,*t Lord Hall. Ohio State University, Columbus 10. Ohio King, Robert G.. 143 X. Center St.. Grove City, Pa. King, Walter F., Spruce Terrace, Portland. Conn. Kingery, W. D. (J), Ceramics Div., Mass. Inst, of Tech., Cam bridge, Mass. Kinsman. Bradley Q. (S). 33 Orchard Lane, Morristown. Pa. Kinzie, C. J.,* Box 245. Youngstown. Niagara County, X. Y. Kircher, Paul J., Maryland Glass Corp., 2147 Wicomico St., Baitimore 30. Md. Kirchner. Henry P. Jr. (Si. Box 213, Pine Grove Mills. Pa. Kirk, Edwin, U. 5. National Museum. Washington.25, D. C. Kirkendale. G. A.." Dept, of Ceramic Engineering, New York State Coilege of Ceramics, Alfred X. Y. Kirkpatrick. Frank,*f 100 S. Benita. Redondo Beach, Calif. Kirsch, Alfred jr.. 48 Center St.. Homeil. X. Y. Klane, Frank, Coming Glass Works. Corning, X. Y. Klaus, Irving (J), 470 Parkway Ave., Trenton 8. X. J. Kleeman. Lee A.. Box 368. New Orleans 7. La. Kleiman, Martin M. W., 270 Selkirk Ave., Winnipeg, Man., Canada Klein, A. Albert,* NTorton Co., Worcester 6, Mass. Klekotka, Joseph F.. 3601 Reed St.. Philadelphia 46, Pa^ Kieymeyer, Clifford A., Standard Brick and Tile Corp, Evans ville 19, Ind. Kline, Hugh L- Corhart Refractories Co., Inc.. 1600 W. Lee St., Louisville 10. Ky. Klinefelter. T. A..*' Box 471, Xorris. Tenn. Klocke, Edward J., H. C. Spinks Clay Co., 1000 First Na tional Bank Bldg., Cincinnati 2, Ohio Klockner. ^Herman Richard, Research Laboratory. Universal_ Randle Corp., Xew Castle. Pa. Knapp. Robert C.. 4704 Belwood Green. Baltimore 27, Md. Knapp, a nomas E- -314 Wilmington Ave.. Xew Castie, Pa. Knapp, William J.,f Dept, of Engineering, University of California, Los Angeles 24, Calii. Knauft, Robert W., Charles Taylor Sons Co- Box 58, Annex Sta., Gncinnati 14. Ohio Knecht, Albert O.A 201 Edgewood Ave., New Castle. Pa. Knight, E. H- Maurice A. Knight Sons Co., Box 150, Crooks- ville. Ohio Knight, Frank P- Jr..* Christmas, via Winkelman, Ariz. Knight, M. A_. Jr..: Maurice A. Knight. "Knight-Ware," Box 111, Akron 9. Ohio Knight, Maurice A., "Knight-Ware" (M. A- Knight, Jr.). Box 111. Akron 9. Ohio Knight. Mellen A.. Central Research Dept- Minnesota Min ing & Mfg. Co- 367 Grove St.. St. Paul 1, Minn. Knighton. Heywood J.f 834 Trombiey Rd., Grosse Pointe" Park ^30. Mich. Knizek, Jan O.. Apartado 2739. Mexico, D.F- Mexico Knoblaugh. Walter C-? 512 X. Washington St- Tiffin 9. Ohio Knowles. Edwin M- China Co. (W. L. Peskin), Newell, W. Va. William V,,* 8905 Champlain Ave., Niagara Falls. Knowlton. Samuel H- 610 New Center Bldg., Detroit 2, Mich. Knudsen. Friedrich P..t 4205 Eastern Ave.. Mt. Rainier, Md. Knudsen, Rolf. Borgestad. P. A, Norway Koch. Daniel O- 826 Crescent Dr., Rahway, N. J. Koch. Frank A.. National Sales Corp., 307 E. Fourth StCincinnati 2. Ohio Koch, M. R- Dept, of Fine Arts, Omaha University, 60th & Dodge Sts., Omaha, Neb. Koch. Ing. Renato.' Direttore Siabilimento Tubi Elettronici. Marconi S.I.P.A.,Via Pile. L'Aquila. Italy Koch. William }.. Electronics Div.. Section 12/1, National Bureau of Standards. Washington 25. D. C Kochanek. Michael f S . 300 Lakeside S.. Seattle 44. Wash. 42S Koehler, W. A.,t Mineral Industries Bldg., West Virginia University, Morgantown, W. Va. Koenig," Charles J.,*t Engr. Expt. Sta., Ohio State University, Columbus 10, Ohio Koenig, E. W',, Carolina Mineral Co., Kona. N. C. Koenig, F. J. M- 602 W. Main St- Dundee, 111. Koenig, John H.,*t Rutgers University, School of Ceramics, New Brunswick, N. J. Kogan. Bemice F., 123 Main St,, Stamford, Delaware Countv, N. Y. Kohl, Hans, Leerbachstr. 117, Frankfurt A. M- Germany Kohler Co. (G. P. Gavin), Kohler, Wis. Kohler, Anthony M., Babcock & Wilcox Co., 161 E. 42nd St- New York 17. N. Y. Kohman, Girard T- 133 Ashland Rd- Summit, N. J. Kohn, Joseph, Universal Dental Co- 48th St Brown Sts., Philadelphia 39, Pa. Kohne, Frank H- 1700 Third Ave., New Brighton, Pa. Komac. Thomas N- Republic Steel Corp., 6100 Truscon Ave- Cleveland 4, Ohio Konopicky, Kamillo. Millstatt. No. F6. Kaemten. Austria Konrad. Howard E. (S), 20 Brookside Ave- Apt. 1A. Somer ville. X. J. Kooij, K., Chamotte Unie X. V,, Tielerweg Geldermalsen. Holland Koos, E. K.,i Sterling China Co., East Liverpool, Ohio Konp Glass, Inc. (C. E. Leberknight), Box 8255, Pittsburgh 18, Pa. Koppers Co., Inc. (C R. Austin). Research Dept. Koppers Bldg- Pittsburgh 19, ?a. Kora, Yosio, 2-cnome, Katsuyama-Cho, Yahata, Fukuoka, Japan Korman. Philip (S), Box 1779, Georgia Tech- Atlanta. Ga. Koschny. Arthur. American Ceramic Society, 2525 X. High St- Columbus. Ohio Koshuba, Walter J., 8080 Knoilwood Lane, Cincinnati 31, Ohio Kowal. Leo B. (J), Canadian Pittsburgh industries. Ltd- Blvd. St. Croix. Ville St. Laurent. Que.. Canada Kowalka. Warren R., Libbey-Owens-Ford Glass Co., 1701 E. Broadway, Toledo 5, Ohio Kraft, C. V.\, Kraftile Co., Niles. Calii. Kraft, Donald E. fS), Neoga. 111. Kraft, Gerald G- Kraft Chemical Co., 917 W. 13th St., Chi cago 8. 111. ^ Krait. Raiph G- 2230 X. Loweil Ave- Chicago. 111. Kraftile Co. (C. W. Kraft), Xiles. Calif. Kramer, William M, Adamston Flat Glass Co.. Ciarksburg, W. Va. Kraner, Hobart M-** Research Dept- Bethlehem Steel Co.. Bethlehem, Pa. Kreger, John M- 123 Prospect St- Woodbridge, N. J. Kreglo. James R., Jr. (Si, Box 5035. Va. Tech. Sia., Blacksburg, Va. Krehbiel. Frederick H- Accurate Pyrometric Cone Co- ?a- laskaia, Ohio Krehbiel, H. O., Accurate Pyrometric Cone Co., Pataskala, Ohio Kreidl, E. L- A. D. Little, Inc., 30 Memorial Dr., Cambridge, Mass. Kreidl. Norbert J,,* 40 Milford Rd- Rochester 10, N. Y. Kreidl, Werner H., Vereinigte Chemische Fabriken. Kreidl Rutter & Co- Sebastian Kohlgasse, Vienna XXI, Austria Kretschmar. Ernest. 101 S. Meramee Ave., Gayton 5, Mo. Kretzmer. Minor G- Jr., Box 32. Woodstock, Conn. Kriege! William W..T Ceramic Engineering Dept- N. C State College. Raleigh. X. C. Kriger. Frederick S.. 148 E. Second St- Coming, X. Y. Krill. Karl E- Office of Ordnance Research, Box CM. Duke Station. Durham. X. C. Krishna. Murthv M. (ST, Box 364, State College. Pa. Krochmal, Jerome J. (S), 728 Spring St. N.W- Atlanta, Ga. Kroeck. William H- Corning Glass Works, Box 544, Corning, N. Y. Krogstie, Lars B- Fredrikstad, Norway Krosch. Donald K- Solaramic Dept.. Solar Aircraft Co.. 2200 Pacific Highway, San Diego 12, Calif. Kruesi, John. American Lava Corp- Chattanooga 5, Tenn. Krull. Alan R,, Northwestern University, Technological In stitute Library. Evanston. 111. Kruson. Joseph H., 79 W. Main St,, Frostburg. Md. Kuchler, H. C- E. I. du Pont de Nemours & Co., Inc., Elec trochemicals Dept., Wilmington 98, Del. Kuechler, A. H-T 435 Nut: Rd- Phoenixville, Pa. Kunzman, Edward E.,- 9185 E. Jaylee Dr., Temple City. Calif. Kupinski, Thaddeus A- 1817Vi Victoria Ave.. Arnold. Pa. Kurtz, Peter, Jr. (S), 103 W. 14th St., Apt. 204, Rolla, Mo. Kyanite Mining Corp. (Gene Dixon), Cullen. Va. Kyonka, Joseph C-T 310Vi E. Green St- Champaign. III. Ceramic Bulletin L Laboratorio Quimico Nacional, (Jorge Ancizar-Sordo) Ministerio de Minas y Petroleos. Apartado 2577, Bogota. Colombia Lachman. Irwin M. (S), 52 X. Co-op Circle, Roosevelt. N. J. Lsclede-Christy Co. (L. C. Hewitt), 4705 Ridgewood Ave- St. Louis 16, Mo. Laconich, Sixic G,, Porcelana Americana S. A- San Julian y Andes, Lomas de Zamora, F. C. N. G. R-, Argentina Ladoo. Raymond B., 42 Huntington Rd.. Newton 58. Mass. Lair.g, Kenneth M., Glass Research Laboratories, Pittsburgh Plate Glass Co.. Creighton. Pa. Laird, Charles,T Malvern Brick & Tile Co., Box 555, Mal vern, Ark. Laird. Robert K.t American Radiator & Standard Sanitary Corp.. 854 E. Broadway, Louisville 4. Ky. Lambe. C. M,,? United States Gypsum Co., 500 W. Adams St., Chicago 6, I1L Lambertson, Wingate A., Argonne National Laboratory, Box 5207, Chicago 80, 111. Lambie. J. M., Findlay Clay Products Co., Washington, Pa. Landback. Charles R.. Tavlor. Smith 8 Tavlor Co.. Chester. W. Va. Lar.dois, Fernando G., Guadalquivir 155 Ote. Col. del Valle, Monterrey, Mexico Landron, Rafael, Jr., 22 Coming Blvd., Corning, N. V. Lane, George J., Edgar Plastic Kaoiin Co., Metucnen, N. J. !' Lane, Richard 0-* 873 White Lake Rd.. Munith, R. R. 1, Mich. Lang, George F., Carr-Lowrey Glass Co., Box 556, Baltimore . 3- MdLang, Samuel G.. 3554 Spring View Dr.. Cincinnati 26. Ohio Lang, S. M., 9718 Braddock Rd., Oakview, Silver Springs, Md. Lange. Louis A.. Industrial Heat Control Products, 641 Haw thorne Ave.. S. Milwaukee, Wis. Langrod, Kasimir, 462 Locust Terrace, Wes: Hempstead. N.Y. Lanier, William S., 3abcoclc Sc Wilcox Co., Old Savannah Rd.. Augusta, Ga. Lames, Eugene M-? 1001 Yearling Rd.. Columbus, Ohio Lapp Insulator Co., Inc. (K. E. Stettinius), Le Roy, X. Y. Lapp, Grover W.,* Lapp Engineering Co., 68 W. Main 5t_ Le Roy. N. Y. Larisch. Herbert W. (5i. Box J-3, Alfred. X. Y. Larkin, Paul G., Larkin Tile Co., 1651 Pomona Ave., San Jose 10. Cat::. LaRocca, Frank J., Colorado Fuei 8 Iron Corp., Box 316, Pueblo. Col. Larson. Paul F.. 15 Lincoln Ave.. Dundee. III. Lassman, 3enjamin, 3enjamin Lassman & Son, Oliver Bldg., Pittsburgh 22. Pa. Larehford-Marble Glass Co. (W. L. Hoeppner), Box 4707 Florence Branch, Los Angeles 1. Calif. Latimer, Gien H- 202 Hancock Ave.. Norristown. Pa. Latimer, Horace L.,* Box 282, West Lafayette, Ohio. Lattin. Judson M. ML International Harvester Co.. Wis consin cieel Works. 2701 E. luoth St.. Chicago 17. ill. Laube. Francis H.. Jr.. Freeport Brick Co.. Freeport. Pa. Laaghlin, Homer, China Co. (J. M. Wells), Newell. W. Va. Laughrey. James C.. 1007 Fourth St. North Braddock, Pa. Laurte. Dominic, Titanium Alloy Div.. National Lead Co- Niagara Falls. N. Y. Lawhead, Creighton M.t 43 W. Sixth St.. Corning. N. Y. Lawless. Emmett A.. Ir.. Acme Brick Co.. Box 448. Malvern. Ark. Lawrence. Frederick ?., Edwin M. Knowles China Co.. New ell. W. Va. Lawrence. Howard O- Industrial Ceramics Ltd.. Cooksville. Ont.. Canada Lawrence. Ralph V.. 143 Leonard Dr., Concord, Calif. Lawrence, Walter F- Jr.,? 18 Yale St., Apt. C, Nutley, N. J. Lawrence. Willis G, New York State College of Ceramics. Alfred. .V. Y. Lawson. Robert W,, Box 499. Erwin. Tenn. !-axton. Wilbur. 126 Market St.. Zanesville. Ohio I-avne. Fred A.. Aztec Ceramics Inc., Box 337, San Antonio 6. Texas T-ayton. Donald R. IS). 801 E. Maiden St- Washington. Pa. Leander. Karl Johan. Langgat. 19. Hoganas. Sweden Lead Industries Asia. IRohert L. Ziegfeld). 420 Lexington Ave.. New York 17. X. Y. Leavy, John C- 64 Xetherwood Ave- Plainfield. N. J. Le Bell. Roll C.. Abo Kakelfabrik, Siottsgatan 52. Abo, Fin' land Leberknight. C. E- Kopp Glass. Inc- Box 8255. Pittsburgh 13. Pa. Leddv, Robert MV 3ox 123. Hammonton. N. J. Lee Clay Products Co- Inc. (Martin S. Bowne), Ciearfield. Kv. Vol. 31. Xo. 10 (10.32! Lee, Harley C- Basic Refractories, Inc- 845 Hanna Bldg., Cleveland 15. Ohio Lee, James A- 1328 Candler 31dg.. Atlanta 3, Ga. Lee, P. William,? 205 Elmwood Blvd- York, Pa. Lees, Arch A.. 411 Avon Dr- Pittsburgh 16, Pa. Lefort. Henry G. (Si. Box 157. R.R. 1. Upper Marlboro. Md. Le Heron. Harold, Etablissements Porcher, Usines de Kevin. Ardennes, France Leibig, Edward C.. Coming Glass Works. Corning, N. Y. Leibson. J. S..f Locke Dept.. General Electric Co.. Schenectady 5. N. Y. Leiby, Fred E- 78 Elmwood Ave- Rye, N. Y. Leighton, M. M.,* State Geological Survey, 121 Natural Re sources Bldg- Urbana, 111. Leitten, Carl F., 50 Hawkins Ave- Hamburg, N. Y. Leland. John A. (J), 3585 Sepulveda Blvd- Los Angeles 34, Calif. Lelivelt, J. W,, Nash-Kelvinator Corp., 1545 Clyde Park Ave., SAV- Grand Rapids 9, Mich. Lemmerman. Paul C- Grasselli Chemicals Dept- E. I. du Pont de Nemours & Co.. National City Bank Bldg- Cleve land 14, Ohio LeMunyon. James S., 250 Wayne St., Mansfield. Ohio Lenchner, Theodore,* Vitro Mfg. Co., 60 Greenway Dr., Pitts burgh 4, Pa. Lennon. John W.. Bartelle Memorial Institute. 505 King Ave.. Columbus. Ohio Lentz, Clarence J., Quebec Iron & Titanium Corp- 3ox 40. Sorel. Que- Canada Lenz, Vernon W.. 2259 Mapiewood Ave.. Toledo 10. Ohio Leopold, Jear. H.. Leopold Sc Cie., Pfanenhoffen, (Bas-R:n), France Lepie, Myron P., Pilgrim Products. 116 Bedford St,, Boston 11, Mass. Lesar, Albert R- 509 Woodlawn, Mexico, Mo. Lessl, Matthias, "Smalteria e Metallurgica Veneta," Bassano del Grappa, Italy Lesso, Harold F- 631 Beechmont Dr.. Dearborn Hills, Mich. Lester, Frank P,, Litestar, Inc.. Ceramics, 39-29 29th St- Long Island City 1, N. Y. Lester, W. Ronald.* Pittsburgh Coming Corp- Sedaiia. Mo. Letort, Marc Yves, Centre National d'Etudes et Recherches Ceramiques, 3 Avenue Paul Doumer, Paris 16, France Leuchte. Nicholas F. (J), 925 Sinclair 5:.. W. Vancouver. B. CCanada Leurai. Igo, 1300 Cromwell Ave.. New York 52, N. Y. Levengood. W. C.. 2140 Rooinwood Ave- Toledo, Ohio Levi, Ormonde S., Verd-A-Ray Corp., 615 Front St- Toledo 5, Ohio Levin. Ernest M- National Bureau of Standards, Div. 9.7, Washington 25. D. C. Levy, Dorothy, 1212 Lincoln Ave.. Highland Park. 111. Levy, Raymond H. (S), Box 701, Georgia Institute of Tech nology, Atlanta, Ga. Lewis, Albert D.. Kimble Glass Co.. Vineland, N. J. Lewis, Charles F- Volunteer Portland Cement Co- Knox ville, Tenn. Lewis, Evan J- 218 Watauga Ave- Coming, N. Y. Lewis. Gordon E-? Gien-Gery Shale Brick Corp., Box 182. Wyomissing, Pa. Lewis, Howard S- Wahpeton Pottery Co.. Wahpeton, N. D. Lewis, J. H,, Blue Ridge Glass Corp., Kingsport. Tenn. Lewis, J. M- Abingdon Potteries, Inc- Abingdon. 111. Lewis, Mary J. (J). 74 Elmendorf St.. Kingston, N. Y. Lewis. Robert T. (S), Box 165, Alfred. N. Y. Lewis, William C- Big Flats. N. Y. Libbey-Owens-Ford Glass Co. (George B. Watkins), 1701 E. Broadway, Toledo, Ohio Lidgenvood. William V,, Aluminum Import Corp., 630 Fifth Ave- New York 20. N. Y. Lieberson. Alice N. (S), Box 631. Alfred, N. Y. Lied, Robert C. (S), R. R. 2, Northport, Ala. Lieder, Phillip H- 110 Farview Ave., Norristown, Pa. Liederbach. William H,,? 272 Newman St., Metuchen, N. J. Ligon, Elmer R- W. S. Dickey Clay Mfg. Co., Box 6, Pitts burg, Kan. Lillie, Howard R-* 191 Deievan Ave- Coming, N. Y. Lilly, Adam, 2849 Garfield Ave- Highland. Ind. Limes, Robert? Mellon Institute. Pittsburgh 13, Pa. Lin. C. Y.,? Union Ceramic Industries Co., Ltd- 202-212 Yee Kuh St.. Kowioon, Hongkong. China Lindenberger. E- c/o Kapper. 26. Acland St- South Yarra, Melbourne. Australia Lindenthal. John IS). Box K. Lakehurst. N. J. Linder. Cyril S.. 1139 Park St.. Tarentum, Pa. 429 Lindquist. Claude A.. Jr..T 3 S. Main Si.. Frankiinville. X. Lindsay. Carey E.. 1025 S. Oiive Si.. Mexico. Mo. Ling, Theodore (Meng-chang), 39 Berriman Si., Brooklyn 8, N. Y. l.intz, E. H..,T -12 Heiskell Ave.. Wheeling. W. Va. Linwood. Sidney H., Stackpole Carbon Co.. St. Marys, _Pa. Linz, Arthur, Climax Molybdenum Co., 500 Fifth Ave., New York 36. N. Y. Litchfield, Nancy (S), Box H-2, Alfred, N. Y. Littleton. Joseph C., 231 Delevan Ave., Corning, N. Y. Littleton, J. T.,* Corning Glass Works, Corning, N. Y. Livovich, Andrew F., 4SM1 Baring Ave,, E. Chicago, Ind. Lloyd. Katherine M.. Kaiser Aluminum & Chemical Corp., 1924 Broadway. Oakland. Calif. Lobaugh, Frank E,t 1052 Sherman Ave.. Plainfield, N. J. Locastro. Frank S. (S). Box 736. Alfred. N. Y. Locke--ice General Electric Co. Lochridge. James FM 20611 Watson Rd., Maple Hts., Ohio Logan Clay Products Co. (Barton A. Hoi1). Logan, Ohio Londeree. Joseph \V,, Jr. (S). 3918 Warner Ave.. St. Matthews. Ky. Long. Bernard. 63 Rue de Rome. Paris 8. France Long, George R., Frigidaire Div., General Motors Corp., Dayton 1. Ohio Long, John V., Solar Aircrait Co.. 2200 Pacific Highway, San Diego 12, Calif. Long, Luther L.p Owens-Coming Fiberglas Corp., Newark, Ohio Long, Robert, American Porcelain Enamel Co.. 1285 Keating Ave., Muskegon 36. Mich. Long. Robert R.. National Tile & Mfg. Co.. 1200 E. 26th St., Anderson. Ind. Longenecker, Robert J. (J). 3 Westminster St., Worcester, Mass. Longiritz. Robert K..r Brighton Brick Co.. Box 256. New Brighton. Pa. I.ongion. Ted E., Frankoma Pottery. Sapuipa. Okla. Longwell, B, E., Republic Steel Corp., 1423 Republic Bldg., Cleveland 1, Ohio Lorev, Frederick D.J 89 Meadow Brook Apts.. Corning. N. Y. Lorry, G. Edwin (S). 94 Easton Ave., New Brunswick. N. J. Louden. R. H.,f McGean Chemical Co.. Midland Bldg.. 101 Prospect Ave. N.W., Cleveland 15. Ohio Louthaa Mfg. Co. (C. W. Gerster). East Liverpool. Ohio Love. L. G., National Lime and Stone Co., First National Bldg., Findlay, Ohio Loveland. Edward W.. 27 Llanfair Rri.. Ardmore. Pa. Lovell. Robert B. (J). 1313 Haisey Rd.. R. R. 2. Box 461. I-ake Parsippany. Troy Hills. N. J. Lovenbach, J., Saint-Roch Co.. 50 Rue du Luxembourg, Brus sels, Belgium Lowe, Earl C..r 267 N. Walnut St.. Logan. Ohio Lowe. George K.J Charles Taylor Sons Co.. Heights-Rocketeffer 3!dg., R.-n. 210. Mayfield at Lee, Cleveland 18. Ohio Lucas, Joseph M., 1431 Broad Blvd.. Cuyahoga Falls. Ohio Lucido. Peter J. (S), 6357 Stratford. St. Louis 20. Mo. Ludvigsen, C. F., Den Kongelige Porcelainsfabrik & Fajance- fabriken Aluminia A/S, Copenhagen F., 45 Smallegade, Denmark r.udwig. David W.t (J), 3272 Keeport Dr.. Pittsburgh 27. Pa. l.utlwig. Urban W.. Box 229. Sea Breeze. N. Y. Lueders. Roland. 3241 Bradford Rd., Cleveland Heights 18, Ohio Luks. Daniel W.,t Barbertown Rd.. Frenchtown, N. J. Lull. Stanley E-. 12 Chamberlain Pkwy., Worcester. Mass. Lunak, Thomas E..t Globe-Union, Inc., 900 E. Keefe Ave.. Milwaukee 1, Wis. Lund. H. Howard (J), 322 N. Brockway St.. Palatine, 111. Lund. L. Howard (S). 145 \V. Park Ave., Wheaton, 111. Lund. Melvin S., 426 E. State St., Alliance. Ohio Lunt, William, Inglewood 13, W. Crescent, Sneyd Green, Stoke-on-Trent. Stafford, England Lutton, X. W., National Plumbing Pottery, Inc., Dearborn, St., Zanesville, Ohio Lyle. Aaron K.,* 21 Cumberland Rd., W. Hartford 7, Conn. Lynch, Eugene D.. Dept, of Ceramic Engr., 204 Ceramics Bldg., Urbana, III. Lynsavage. Walter F.. 402'/j Broad St.. Port Allegany. Pa. Lyon. John B.. Hebron Brick Co.. Hebron. N. D. Lyon, Kenneth C,* Research Laboratories, Armstrong Cork Co., Lancaster, Pa. Lyons. Clifford T.. 2312 W. Harris. San Angelo. Texas Lyons, S. C.. Georgia Kaolin Co., Dry Branch, Ga. Lytle. Jack A. (S). 2719 N. Hackett. Milwaukee 11. Wis. Lytle, W. O.. Pittsburgh Plate Glass Co., Research Lab., Creighton. Pa. 430 Lyttle, Frobisher T., 1031 Findley Ave., Zanesville. Ohio Me McAdoo, Don Parker. 8421 Loch Raven Blvd.. Apt. A. Tow son 4. Md. McAllister, Christophert (J), 102 Miegs Ave., Clarksburg, \\ . Va. McAlpine, Kenneth B., 1201 Union Ave.. Brackenridge, Pa. McAskill, James I., 311 King St. W., Kingston, Ont.; Canada McBride, P. B., Porcelain Metals Corp. oi Louisville, 1400 5. 13th St., Louisville 10. Ky. McBumey, John W.,* 1543 N. Falkland Lane, Silver Spring, Md. McCabe, Richard P,, Ceramics Dept., Rutgers University, New Brunswick. N. J. McCammon. James W., Dept, of Mines, Parliament Bldgs., Victoria, B. C., Canada McCaridless. Lyon. Frazier-Simplex International Corp.. 420 Madison Ave.. New York 17. X. Y. McCann, D. M..* Akron Porcelain Co.. Akron 14, Ohio McCann, Sidney W.,t Pfaudler Co., 1000 West Ave.. Roch ester 11, N. Y. McCant, Kenneth C., 1408 Delaware Ave.. New Castle, Pa. McClave. James W.,t Box 67, Toronto. Ohio McClelland, Roland H.,1 Globe-Union, Inc., 900 E. Keefe Ave., Milwaukee 1, Wis. McClune, Charles V.,t 2930 Clairrr.ont Ave., S., Apt. B 6, Birmingham, Ala. McCiure, Howard C,, 180S Hutchins St.. Portsmouth, Ohio McCollom, Perry C.J American Crucible Co.. North Haven. Conn. McComas, Clarence B., T. C. Wheaton Co., Millville, N. J. McConnell. Clifford T. (S), Box 2161. Georgia Tech.. Atlanta. GaMcConnell. G. F,, Mosaic Tile Co.. Zanesville, Ohio McCormick, John M., 2356 Cheltenham Rd., Toledo 6. Ohio McCormick. Stewart \V.. c/o Corhart Reiractories. 1600 W.. Lee St.. Louisville. Ky. McCoy, William, 1219 24th St., N.E.. Canton 4, Ohio McCreery, George L., 393 Highland Ave., Wadsworth, Ohio McCreight, D. O., 15 Willow Terrace Dr., R. R. 2, Library, Pa. McCreight. Louis R.. R. R. 1. 6/ Hillendale Dr.. Ballston Lake. N. Y. McDanel, Donald W., McDanel Refractory Porcelain Co.. Beaver Falls, Pa. McDanel. Melvin W., R. R. 3, Beaver Falls. Pa. McDaniei. L. L.. Phelps Dodge Corp.. Morenci Branch. Morenci. Ariz. McDermott, James J., Jr., 80 William St.. New York 7. N. Y. McDonald. E. F., Ingram-Richardson Mfg. Co.. Beaver Falls. Pa. McDonald. Howard A. (J). 306 Roberts Hall. University of Washington. Seattle 5. Wash. McDougal. Taine G.,*T A C Spark Plug Div., General Motors Corp., Flint 2. Mich. McDowell, J. Spotts,* 4716 Bayard St., Pittsburgh 13, Pa. McDowell, Samuel J.,*f 52 Elm Ave., Metuchen, N. J. McElroy, R. H.,f International Clay Machinery Co., Dayton, Ohio McEvoy, Robert J.,f Research Lab.. Owens-Coming Fibergla-. Newark, Ohio McFarland. James E.. Inland Steel Co.. 3210 Watling St., East Chicago. Ind. McGean. Ralph L.. Midland Bldg.. 101 Pro.<i>ect Ave.. N.W.. Cleveland 15. Ohio McGee. Thomas D.t (J), Research Laboratory, A. P. Green Fire Brick Co.. Mexico, Mo. McGill, William M., Virginia Geological Survey, Box 1428, University Sta.. Charlottesville. Va. McGohan. G. William. Armco Steel Corp.. Middletown. Ohio McGolpin, William C, Rm. 403, 57 Bloor St., W,, Toronto 5, OnL. Canada McGraw, Delford A., 4101 Garden Park Dr., Toledo 13, Ohio McGurfin, James B. (S), Box 282, University, Ala. McHardy, Maynard E., 2401 N. Leffingwell, St. Louis 6, Mo. McHose. L. H, Inc. (M. M. McHose, Jr.), Box 47, Perth Amboy. N. J. McHose, M. M., Jr., L. H. McHose, Inc., Box 47, Perth Amboy, N. J. McHugh, M. J., Jr., Consolidated Feldspar Corp., 1403 Tren ton Trust Bldg., Trenton 8, N. J. McIntosh, Harold W., American Window Glass Co., 1601 Farmers Bank Bldg., Pittsburgh 22. Pa. McIntyre, G. H.,*t Ferro Corp., 4150 E. 56th St., Cleveland 5, Ohio Ceramic Bulletin McKaig, \V. Wallace, Cumberland Steel Co., Cumberland. Md. McKamy, Paul E.. Prater Industrial Products, Ills S. 55th St.. Chicago 50, 111. McKeand. Irvin J. (S). 417 Fairlawn Dr.. Urbana. 111. McKee, William D., Jr. (S), Missouri School of Mines, Apt. Q-7, Rolla, Mo. McKeen, Richard D- 2648 Robinson Blvd.. Pittsburgh 21. Pa. McKendrick, Alexander, Glenboig Union Fire Clay Co., Ltd- GIcnboig, Lanark, Scotland McKenna. John F. (J). Box CC. Alfred. N. Y. McKenney, William H.,r University oi North Dakota, Grand Forks, N. D. McKeown, Thomas H., Box 31, Metuchen, N. J. McKibben, Burt H., Niles Rolling Mill Co., Niles, Ohio McKinley, Theodore D., E. I. du Pont de Nemours 4 Co- Newport, Del. McKinneli. James, Jr., 704' Pleasant. Boulder, CoL McKirmie. J. R.. 3813 Hoke Ave.. Culver City. Calif. McKinstry, Herbert A. (S), Box 391, State College, Pa. Mcl-achian. Eugene (S). 704 McMillen St- Southmont. Johns town, Pa. McLain Fire Brick Co- Ceramic Engr. Dept.. Wellsville, Ohio McLane, James P- Diamond Pottery Corp., 50-56 China St- Crooksville. Ohio McLaren, Henry D., Ferro Enamels (Canada) Ltd-, Box 454, Oakville, Ont.. Canada McLaren, John. Broadview Circle. East Liverpool, Ohio McLaren. Malcolm G. (sSl. 330 Cooper Lane. University Heights. New Brunswick, N. J. McLaughlin. Joseph K..T Red Wing Potteries. Inc.. Red Wing. Minn. McLaughlin. William H,, Alsey Brick 4 Tile Co., Alsey, III. McMahon, John F.,*T Allred, N. Y. .McMahon. John F- Jr. (J). 100 E. Third St- Apt. 5, Lansdale, Pa. McMaster, Harold A- Permaglas, Inc., Genoa, Ohio McMullen. John C- 9325 Rivershore Dr- Niagara Falls. N. Y. McMurdie. Howard F., National Bureau oi Standards, Wash ington 23, D. C. MeMurtrv. Car! H. (SI. (Box F F. Alfred. N. Y. McNamara. E. ?-* 1710 Highland Ave., New Castle, Pa. Mc-Varrara. Richard B. (J). 338 Woodside Ave.. Buffalo 20. N. Y. McNaughton. Ronald R- Central Technical Library, Con solidated Mining 3: Smelting Co. of Canada, Ltd- Trail, B. C.. Canada McNeilly, Clyde. Jr. (S). Box C C. Alfred. N. Y. M'Quarrie. Maicoim C. (Si. 392 Church St.. North Adam?. Mass. McRitchie. Frank H., Engr. Exp:. Sta., Ohio State Uni versity. Coiumbus 10. Ohio McVay, T. N.,*T School of Chemistry, Metallurgy 4 Ceramics, University- M Alabama. University, Ala. McWilliams. Robert J.. Ptaurilcr Co.. Elyria Div.. Tayior St- talyria. Ohio , M MacAlpine, William M- 357 E. Main St- Somerville, N. J. MacDonald. James E.. McFeeiy Brick Co., Latrobe. Pa. MacDonald. R. W.J 109 Bent Oak Drive, Shavano Park, Box 661. R. R. 11, San Antonio, Texas Mackasek. Edward. Porcelain Enamel Institute. Dupont Circle Bldg.. 1346 Connecticut Ave.. Washington 6. D. C. Mackenzie, James, United Steel Companies, Ltd- Research 4 Development Dept., Swinden House. Moorgate, Rother ham. England MacKenzie. James T- Box 2603, Birmingham 2. Ala. MacKie. L. D., International Ceramic Mining, Ltd- 54 Welling ton St.. W,, Toronto. Ont., Canada MacMullen. Charles \V.. 'Instant Drying Corp., 101 Park Ave.. New York 17. N. Y. MacZura. George (S). 5118 Highland Ave,. St. Louis 13. Mo. Madden. Jesse F- Page-Madden Co- Inc., 76-96 Second St, Box 110, Mineola. N. Y. Madden. Robert C- 1551 Jordan Ave.. R.R. 1. Box 566H. Provn. Utah Maddock, A. M- Washington Crossing, N. J. Maddock, J. B.2 Paper, Makers Importing Co- Inc, 44 S. Second St- Easton, Pa. Madsen. Leif Egil, Box 4208. Sandakervn 109/111. Oslo. Norw ay Magic Chef, Inc. (Arthur Stockstrom), 1641 S. Kingshighway, St. Louis 10. Mo. Magid. H. S-l American Radiator 4 Standard Sanitary Corp.. Box 907, Trenton 5, N. J. Magnuson. J. W.. Western Feidspar Milling Co.. Box 671. Salida. Col. VOL. oi, NO. 10 (1952) Mahaiiey, Carroll J. (S), R. K. 10. Box 321, Fort Worth, Texas Mahitr, Lois W.. 4535 Harding Blvd- Baton Rouge, La. Mahoney, Frank B, Richmond Radiator Co., Uniontown, Pa. Mahurin. Frank R,, 638 Clower St.. San Antonio. Texas Majcske. Joseph. T. C. Wheaton Co.. Millville. N. J. Malcolm. Richard B.. 1857 Chessland St.. Pittsburgh 5. Pa. Malkin, W. R- B. F. Drakenfeld & Co- Inc- Box 267, East Liverpool, Ohio Malm, Arthur T.,T 233 Beverly Rd- Worcester 5, Mass. Maloney, William F,, 5251 Forbes St,, Pittsburgh, 17, Pa. Mandlr. Richard M,, Rare Earths. Inc.. Box 488. R. R. 4. Paterson. N. J. Mann. George H.. Lake Salubria. Bath. N. Y. Manning, R. Douglas, Harker Pottery Co- East Liverpool, Ohio Manousek, Miloslav. Smeralova 32. Praha XIX. Czechoslo vakia Mauring. Jack C.T (J). R. R. 1. South Charleston. Ohio Manring, William H- Calumite Co., Box 151, Hamilton. Ohio Mansfield Sanitary Pottery, Inc. (Perry E. Draper), Perrys- ville, Ohio Manson. M. E-* Box 1480, Palm Springs, Calii. Manz. Oscar E. (J). Dominion Fire Brick 4 Clay Products Ltd- Claybank, Sask., Canada Maples. Jack Scott (S). Pine Hall 3rick 4 Pipe Co.. Winston- Salem. N. C. Marbaker, Edward E.,* Mellon Institute, Oakland Sta- Pitts burgh 13, Pa. March, Joseph W., Nova'Scotia Technical College, Halifax, N. S- Canada Marcus. Leon (Si. General Delivery. Salem. Mass. Margolis, David. 16 Winchester Ave.. Yonkers 2. N. Y. Mark. Stanley D.. Jr. 42 Ward Park. Grand Island. X. Y. Markert, Fred- 21341 Aberdeen Rd.. Rocky River 16. Ohio Marquis, John E.. Pemco Corp.. Res. and Dev. Lab.. 2552 Green- mount Ave.. Baltimore IS, Md. Marsh. Frank L_ National Gypsum Co., Clarence Center, N. Y. Marshall. Claude (S). Box F F. Klan Alpine. Alfred. N. Y. Marshall. Darwin (Si. 46 Regent St- North Plainfield. X. T. Marshall, Hugh C. (J). R. R. 3. Saiineville. Ohio Marshall, Paul A., 1201 Cherry St.. Brockway. Pa. Marshall, R. W,, Caribbean Development Co., Ltd- Giamps Fleurs, Trinidad, British West Indies Marshall. Shadbum. U. S. Steel Co.. Res. 4 Dev. Lab. 234 .At wood St.. Pittsurgn 13. Pa. Martin, Francis W., 101 Hornby Dr.. Painted Post. N. Y. Martin, Frank B., E. J. Lavino 4 Co.. Box 29, Norristown. Pa. Martin, George D.. 612 Colorado Ave- Baltimore 10, Md. Martin, H. C- Carborundum Co.. Niagara Falls. N. Y. Martin, James K- 1068 Helen Ave., Lancaster. Pa. Martin. Tohn R,, Jr., Monongahela Power Co- Wellsburg. W. Va. Martin, Leonard A- Martin Ceramic Supply Co.. 8901 Rainier Ave., Seattle 8. Wash. Martin, Ralph K- 2300 E. 52nd St- Los Angeles 11, Calif. Martin. Wesley G-* 6054 N. Kent Ave- Milwaukee 11. Wis. Martins. Eng. Renato. de Siqueira. c/o Ceramics Sao Caetano. Caixa Postal 278. Sao Paulo. Brazil Martz, Joseph A- 535 Riverside Ave- Wellsville. Ohio Marx, LeRov J- Denver Terra Cotta Co- W. First Ave. & Umatilla St.. Denver 19, Col. Maryland Glaaa Corp. (L. C. Roche), 2147 Wicomico St,, Baltimore 30, Md. Maskill, William, Coalbournhill Glass Works, Stourbridge, Worcester, England Maaon City Brick & Tile Co. (C. F. Garland), Mason City, Iowa Mason. Mary Ann. 8801 Maywood Ave.. Silver Spring, Md. Massengaie. Gordon B- 2732 Porter St. N.W.. Apt. 3. Wash ington 8, D. C. Matarazzo, S A I. R. F. (M. Mazzetti), Brazil Export Corp.. 50 Broadway, New York 4, N. Y. Matejczyk, John F., 7506 Trevanion Ave- Pittsburgh 18, Pa. Mather, Katharine. Corps of Engineers. Waterways Exp. Sta.. Drawer 2131. Jackson. Miss. Mathesius. W. H,, Freyn Engr. Dept- Koppers Co. Inc.. 109 N. Wabash Ave.. Chicago 2. III. Mathiasen, O. E- Federal Seaboard Terra Cotta Corp., Perth Amboy, N. J. Mathieu. Louis A.. Parra Mancois. 11 Chemin de Ronde. LeVesinet (S. 4 O.), France Mathis, Adrian O., H. C. Spinks Clay Co- Inc., Box 829. Paris, Tenn. Matson, Frederick R.,t School of Mineral Industries, Penn sylvania State College. State College. Pa. Matteson, Gilbert D., Stone House, R. R. 2. Sherburne, N. Y. 431 Matthews, L. G., American Smelting i Refining Co., 120 Broadway, New York 5, N. Y'. Mattison, William F, Jr., 604 Laurel Ave., West Allenhurst, .V. J. Maupin. Addison.' 721 Yale Ave.. Terrace Park. Ohio Maurer, James A.. 519 N. Lake Dr, Milwaukee 11, W is. Mauser, H. W, Spoorsingel 68, Delft, Holland Mavor, Wiifrid, Ferro Enamels (Canada) Ltd., Oakville, Ont., Canada Masson, Elwvn L., 1208 Isabel St., Burbank. Calif. Masson, Elwyn L., 1208 Isabel St., Burbank, Cali:. .Maxwell. _Laurei H., 3513 Perry Ave.. Kensington. Md. May, L. F., Standard Ultramarine Co., Huntington 18. W. Va. Maybaum. Paul S., Jr., 4335 Norma Dr., South Euclid, Ohio Mayer, Walter S., Mayer China Co., Beaver Falls. Pa. Mayfield. Manville J.t (J). 110 Hilldale Dr., Chattanooga 4, fain. Mays. Carlton Lee. 62 E. Shirley S:.. Mount Union, Pa. Mays, George A, Niles, Calif. Mazet. Louis. Boras Frangais, S.A., 64 Rue des Mathurins, Paris (8*) France Mazzetti, M., S/A I. R. F. Matarazzo, Brazil Export Corp., 50 Broadway, New York 4, N. Y. Medert, Warren C.,; General Eng. Dept., Owens-Illinois Glass Co., Alton, 111. Meeka, Edward, Metropolitan Clay Inc., Box 27, East Pales tine, Ohio Megies. John E.. Jr. (S), Kappa Delta Rho, 420 E. Prospect Ave.. State College. Pa. Meharg, Laurence, Hazel-Atlas Glass Co., 15th & Jacob Sts., Wheeling, W. Va. Meid. William J., 822 Belleforte, Oak Park. III. Meinken, Robert H. (S), 201 Park Ave., Keansburg, N. J. Meiresonne, Arthur ,C, 824 W. Third St., Logan, Ohio Mejia, Lorenzo, Colombia Brewers Industries, Inc., 150 Broadway, 13th Floor, New York 7, N. Y. Melick. Nelson M., Nelson McCoy Pottery Co., Roseville, Ohio Melov, Charles I_T 524 11th Ave., Bethlehem, Pa. Meng, Edwin R, Box 6087, Cleveland 1, Ohio Merbier. Wallace (J). 511 S. Mercer S:., Blueheld. W. Va. Merck. Walter J.,' 25 Adcison Dr.. Short Hills. N. J. Meredith, Neil F., 214 Lafayette St., Fiir.t 5, Mich. Meriwether, B. Corbin, Deena Artware. Ir.c., 632 5. Third S:.. Paducah. Ky. Merkel. W. H., W. A. Riddell Co., American Clay Machinery Div., Bucyrus, Ohio Merlini. Ing. Francesco, Colonnata (Florence), Italy Merriam, Jack G,7 Box 407, Mundelein, 111. Merritt. Clarence W,,t Box 464, Alfred, N. Y. Merritt. Lester M,7 654 Wilson Ave.. Columbus 5, Ohio Merry, . S., Jr.,t Merry Brcs. Brick & Tile Co., 4j5 Mascnic Bldg., Augusta. Ga. Merry. W. H.. 3S0 E. End St.. Beaver. Pa. Mertens, Robert C. (S), 1103 W. Illinois, Urbana. III. Merwin. Byron W,, Parkway Rd.. R.R. 2. East Liverpool. Ohio Merz, George. Magnesita S. A., Caixa Postal 208, Belo Hori zonte, Brazil Messimer, Laverne A.,7 Holophane Co, Newark. Ohio Metal & Thermit Corp. (George C. Betz); 100 E. 42nd St., New York 17. N. Y. Metalloy Corp. (Walter M. Fenton), 2560 Rar.d Tower, Minneapolis 2, Minn. Metz, G. F,, Hillside Dr, Farquhar Estates. York, Pa. Metzger. A. J.,t Dept oi Ceramic Engineering, Virginia Poly technic Institute. Blacksburg, Va. Mexico Refractories Co. (C. A. Smith), Mexico, Mo. Meyer, G. Robert (J), 1333F5 Utah St.. Toiedo 5, Ohio Meyer, George W, Glenshaw Glass Co, Inc, Glenshaw, Pa. Meyer. L. S, Hydraulic-Press Brick Co, 705 Olive St.. St. Louis 1. Mo. Meyer, William W, R. R. 1. Box 632. Annandale. Va. Meyerhofer. E. A, Meverhot'er & Co, Postbox. Zurich 32, Switzerland Meyer-Scholer, Hans, Carl Spitterlerstrasse I, Liestal, Swit zerland Michael, Frank L, 319 Norboume Blvd, St. Matthews. Louis ville. Ky. Michel, Howard, 2237 S. Florence Place, Tulsa, Okla. Michel, S, 9 Rue Deves, Neuilly-S-5eine (Seine). France Michelotti. Joseph E, c/o L. Sprauze, R.R. 3, Kuser Rd, Trenton, N. J. Middleswarth, Ear! T, 1229 Bakerstown Rd, Tarentum. Pa. Middleton. George J, 432 Fifth St, Manhattan Beach. Calif. Millar. N. S. C, British Titan Products Co, Ltd., Kronos House. Coppergate, York. England 432 Miller, B. L,, Royal China. Inc, Sebring, Ohio Miller. Boyd C, Miller Equipment Co, Box 1566, Salisbury, N. C. Miller. Edmund H. (S), 910 Poplar St, Austin, Texas Miller. Elwin L. (S), Box 726, Alfred. N. Y. Miller, Fred M, The Brynwood, Apt. A-24, Wynnewood, Pa. Miller, Fred W, Franklin Manor. 114 Franklin St, Bldg. S, Apt. B-2, Maplewood. N. J. Miller, Grant E, Ferro Corp, 4150 E. 56th St, Cleveland 5, Ohio Miller, Harold. 1423 S. Tripp Ave, Chicago 23, 111. Miller. Harold D, 189 Circle Dr, Plandome Manor, Long Island. N. Y. Miller, Howard L,7 Libbey-Owens-Ford Glass Co, Rossford, Ohio Miller, James S, Paper Makers Importing Co, Inc, 44 S. Second St, Easton, Pa. Miller, John B,f Third St, Lewiston, N. Y. Miller, John K. (S), Beta Theta Pi, State College, Pa. Miller, John W, New Castle Refractories Co, New Castle, Pa. Miller. Jorge Smith, Casilla 187, a/co. Cristalerias de Chile S. A, Santiago de Chile. 5. A. Miller, Marlic. Jr. (S), 3ox J-3, Alfred, N. Y'. Miller, O. E, Box 466, Pyro Refractories Co, Oak Hill. Ohio Miller, Ray R, Claycraft Co, Box 866, Columbus 16. Ohio Miller, Robert A," Pittsburgh Plate Glass Co, 2000 Grant Bldg, Pittsburgh 19. Pa. Miller, R. V, Sovereign Potters, Ltd, Hamilton. Ont, Canada Miller, R. W, Coiumbia-Southem Chemical Corp. Barberton, Ohio Miller. Russel A..' 251 E. Rockland St, Philadelphia 20. Pa. Miller, William A, Carborundum Co, Falconer, N. Y. Miller, William C, 2300 Palmer St, Swissvale, Pittsburgh 18, Pa. Milligan, Chester E, 4814 Loma Vista Ave, Los Angeles, Calif. Milligan, Lowell H,, Norton Co, New Bond St, Worcester 5, Mass. Milliken, Edward C,7 444 W. North Ave, East Palestine, Ohio Milliken, John H. (S), Tower Club, Stadium Dorms, Ohio State University, Columbus 10, Ohio Milliken^ Joseph Edward (S). Tower Club, Stadium Dorms Ohio State University. Columbus 10. Ohio Milliken. Wiiliam U. (S). Box 237. Alfred. N. Y. Millman, Nathan, J. M. Huber Corp, Huber, Ga. Mills. G. Alexander, Houdry Process Corp, Box 427, Marcus Hook, Pa. Mills, R. Gerald (S), 39 S. Adelaide Ave, Highland Park, N. J. Mills. Robert H, R. R. 3. Wdmington Rd, New Castle, Pa. Miner. Reginald R, 412 W. Chestnut Ave, Metuchen. N. J. Mink. John D, R. R. 1, Dunkirk. Ind. Minnick, L. John, 306 Boyer Rd, Cheltenham, Pa. Minton, G. Z.T Pittsburgh Plate Glass Co, Research Lab, Creighton, Pa. Minton, H. Collin. Jr, Star Porcelain Co, Muirhead Ave, Trenton 9, N. J. Missbach. George E, Morehouse Industries, 707 Henry Grady Bldg, Atlanta, Ga. Mississippi Glass Co. (R. D. Humphreys), 200 Fifth Ave, New York 10, N. Y. Mitchell, Guthrie M, Fairfacts Co, Inc, Box 374, Trenton. N. J. Mitchell, Lane.*7 School of Ceramic Engineering, Georgia Institute of Technology, Atlanta, Ga. Mitchell, M. P, Fairfacts Co, Inc, Box 374, Trenton 3, N. J. Mitchell. Russell G, R. R. 1 Dutch Ridge Rd, Beaver. Pa. Mitoff, Stephan P. (S). 82 Brookwood Rd, Orinda. Calif. Mitra, H. K.,7 12 A Rd. E, Jamshedpur B. N. R, India Mixer. William G, Jr, 1848 W. Fifth Ave, Columbus 12. Ohio Mochel, John M, R. R, Charleston Rd, New Albany, Ind. Mockrin. Isadore, Pennsylvania Salt Mfg. Co, Res. & Dev. Div, Box 4388 Chestnut Hill P. O, Philadelphia 18, Pa. Modigiiani. Piero. Modigliani Glass Fibers, Inc, Box 18. Lan caster. Ohio Moebus, C. R, United Clay Mines Corp, East Liverpool, Ohio Moffat, John. Jr, 3275 Colony Circle. Los Angeles 27, Calif. Monett. Robert A, North American Refractories Co, LockHaven, Pa. Mohanty, Gajendra Nath (SI. Ceramic Engr. Dept, School of Mines : Metallurgy, Roila, Mo. Mohl, Helmuth. Fabrica de Loza ``La Favorita," S. A, Palma Norte 308, Despacho 312, Mexico, D. F, Mexico Mohler. Neal F. (J), Bretton Hall. Apt. 103, 8105 University Lane, Silver Spring, Md. Ceramic Bulletin Mohr. J. Gilbert/ LOF Fiber Glass Div., Parkersburg, W. Va. Mohr, William C./ Westinghouse Research Labs., Ardmore Blvd, E. Pittsburgh. Pa. Moler Products, Ltd., Hythe Works, Colchester, Essex, Eng- land Molina, Joao Jernanries Gimenes. c/o Ceramica Sanitaria Por- ceiit. S. A.. Rua Itapura 626, Sao Pauio. Brazil Moller, J. Aall, Porsgrunds Porselaenstabrik, Porsgrund, Norway Monack, A. J, Box 30S, Rutheriord, N. J. Moneta, Fausto. Via Mambretti, 9. Milano, Italy Mong, Lewis E., 8506 Loughborough Place. Chew Chase 15. Md. Moninger, Richard E., Newell Heights, Newell, W. Va. Monks, J. R.. 1118 W. Ninth St., Alton. 111. Mcntagno, Antonio M.. 69 Glenmont Ave, Columbus 14. Ohio Moniemayor, Ponciano S., Jr., Box 1081, Monterrey, Nueva Leon, Mexico Montgomery, Earle T.,*t Engr. Expt Sta., Ohio State Uni versity, Columbus 10, Ohio Montgomery, Eldwin C/ (J), 1701 E. Broadway, Technical Dept.. Toledo 5, Ohio Montgomery, Robert J.* (Life). 1851 Aloma Ave., Winter Park. Fla. Montgomery, Thomas B, Pittsburgh Plate Glass Co., 632 Duquesne Way, Pittsburgh 22, Pa. Moody, H. Leslie, Hyalyn Porcelain, Inc., Box 460, Hickory, N. C. Moody, Willis E./ 21C E., Frankiin St., Raleigh. N. C. Mooney, Edward L.. General Lab. Assoc., Inc., Norwich. N. Y. Mooney, William F./ 300 N. Mt Trail Ave., Sierra Madre, Calif. Moore Enameling & Mfg. Co. (Walter B. Moore), West Lafayette, Ohio Moore & Monger (Murray Rushmore), 33 Rector St., New York 6, N. Y. Moore. Carleton B. fS). Alfred. X, Y. Moore, Charles H.. P. R. Mallory & Co., Indianapolis, Ind. Moore. Dwight G,*^ Mineral Products Div., National Bureau of Standards, Washington 25, D. C. Moore. H, Dept, of Glass Technology, University of Sheffield, Eimneld, Northumberland Rd,, Sheffield 10. England Moore. Henry, 38 Potter Ave., W. New Brighton, Staten Is land. .V. Y. Moore, John G., 505 E. Popiar Su Robinson. 111. Moore. Richard S.,t Harbison-Walker Refractories Co., Farm ers Bank Bldg., Pittsburgh 22, Pa. Moore. Sober: F., Apt. 1. 5329 Knoll-wood Dr.. Parma, Ohio Mocre. Walter B., Moore Enameling St Mfg. Co., West La fayette. Ohio Moore. W. G., Humphryes Mfg. Co., 201 E. Fifth St, Mans field. Ohio Moran, J. J.. Landis Ave. St Spring Rd.. Vineland, N. J. Morell. N. L, 313 Union Bank Bldg., Bethlehem, Pa. Morena, Alfred (J;. 2451 Second Ave., New York 55. X. Y. Morgan. John M. (S), 720 Rankin Ave., Schnectady, X. Y. Morgan, Raymond W., Koehler 8: Morgan Co., 12099 Woodbine. Detroit 28. Mich. Morgan. Robert A./ Pass Sr Seymour, Inc, Syracuse. N. Y. Morgan. Stuart F./ "Marshnere," Maltapoisett Neck Rd.. Mattapoisett. Mass. Morgan. Willard L, 117 Hibiscus Drive, Pittsburgh 35, Pa. Morgan. William R..*f 1343 Brookwood. Birmingham. Nlich. Mork. Harold M.. 1323-C Yale St.. Santa Monica. Calif. Mornin, Bob L./ 67 N. County Line St, Fostoria, Ohio Morren. Georges. 20 rue Debunne, Menin. Belgium Morris. Ernest D.. 15 Iroy Rd, Heswall, Cheshire. England Morris. Frank, 236 Greenooint Ave, Brooklyn 22, N. Y. Morris. Frank E. (5). 1670 Third St, Portsmouth. Ohio Morris. George J, Research Dept, Ferro Corp, 4150 E. 56th St, Cleveland. Ohio Morris. Irvine H,, 56 Wellington St, Brantford. Ont, Canada Morris. John L,, 14427 Allingham. Norwalk, Calif. Morris, Kent B. (S), 202 Evans Dr, Decatur, Ga. Morris. Paul R, Pittsburgh Plate Glass Co, Creighton, Pa. Morrison, Boone H, B. F. Drakenfeld & Co, Inc, Box 519, Washington, Pa. Morrison. R. F, 384 Gulf Rd, Elyria. Ohio Morrison. Wallace S, 840 Cedar St, Rockford, 111. Morse. George T, 7 Longview Rd, Metuchen, N. J. Morton Pottery Co. (S. W. Rapp. Jr.), Morton. 111. Morton, William A, 46 Standisn Blvd, Mt. Lebanon, Pitts burgh 16. Pa. Mosaic Tile Co, Zanesville, Ohio Moser, John L./ 1210 Acorn Dr, Dayton 9. Ohio Moser. Paul Andrew (S). North House. McMaster University. Hamilton. Ont, Canada Moss. LeRoy L./ Walnut Hills Rd.. Cleveland 22. Ohio Vol. Ml. No. 10 (19-52) Motsch, F. R, Foster-Forbes Glass Co, Marion, Ind. Mould, W. J, Steubenville Pottery Co, Steubenville, Ohio Mount Clemens Pottery Co. (Charles E. Doll), Mt. Clemens, Mich. Mouraud. Paul H,, 14 Ingleside Rd, Upper Montclair, N. J. Mowrev, Fred W, 108 Rodgers Dr, R. R. 1, New Kensington. Pa- " Mueller, Edward E/ (S). School of Ceramics, Rutgers Uni versity, New Brunswick. N. J. Mueller, Ferd A, 1360 Rudd. Canon City. Col. Mueller, James I./ Ceramic Engineering Div, School of Mineral Engineering, University of Washington. Seattle 5, Wash. Muir, David R, Mississippi Glass Co, Main St Angelica, St. Louis 7, Mo. Mulder, James W, 38 Clearfield Ave, Norristown, Pa. Mullen, Willard F, R. R. 1, State College, Pa. Muller, Frederick W,, 1111 Calumet Ave, Calumet, Mich. Muller, Dr. log. Gerhard, Staatliche, Porzellan-Manufaktur. Berlin, (13a) Selb/Oberfr, Hartmannstrasse 1-3, U. S. Zone, Germany Muller, Max/ Basic Refractories, Maple Grove. Ohio Muller, Robert. Ste. Emaillerie de St. Maurice, 29 Rue du Vai d'osne, St. Maurice. France Mullite Refractories Co. (D. C. Alford), Shelton. Conn. Mulroy, James P,t 965 Lafayette Ave, Buffalo 9, N. Y. Mulryan, Henry, Sierra Talc & Clay Co, 5509 Randolph St, Los Angeles 22. Calif. Muivane, O. E, 4138 N. 21st St, Milwaukee 9, Wis. Mundy, O. S./ 426 Park Ave, Wheaton, 111. Murgatrovd, John 3, Rockware Glass Syndicate, Ltd, Rockware Ave, Greenford. Middlesex, England Murphy, Harry T, Dimax Fire Brick Co, Climax, Pa. Murphy, Remington M,, 420 Hixson Ave, Syracuse 6, N. Y. Murray, Maurice A./ 4200 Haie St, Chattanooga 11. Tenn. Murrav, Robert S, B. F. Drakenfeld St Co. Inc, Washington. Pa. Musselmar, H. G, 4413 Old Frederick Rd, Baltimore 39, Md. Mvers, C. H, Utah Fire Clay Co, 107S 5. First \V,, Salt Lake City, Utah Myers. Wilbur C,, 2401 Malden Rd.. Cleveland 21. Ohio Myerson, Martin, 90 Hamilton St, Cambridge, Mass. Mygdal, Rolf L, 900 Jessie S:.. Austin. Texas N Nadler, Marion R,, 1371 Iris St, Apt 10. Los Alamos, N. M. Xagan. Harold (S), Box 1-9. Alfred. N. Y. Nagel, E. W, Wrought Iron Range Co, 5661 Natural Bridge Ave, St Louis 20, Mo. Nakamura. Yoshikazu. Asahi Glass Co, No. 1, 4-chome. Ginza, Chuo-ku. Tokyo, Japan Nance. Taylor F, (J). Owens-Coming Fiberglas. Box 742. Anderson. S. C Napier. John 3, 1297 Burton Ave, Macor, Ga. Nash, Harold S,* Ceramics Dept, University of Cincinnati, Cincinnati 21, Ohio Nash. Herbert, Southern California Gas Co, Box 3249, Ter minal Annex, Los Angeles 54, Calif. National Ceramic Co. (J. A. Schermerhorn), 00 Southard St, Trenton 2, N. J. National Engineering Co. (E. A. Peterson), 549 W. Wash ington 31vd, Chicago 6, 111. National Fireproofing Corp. (R. A. Shipley), 327 Fifth Ave, Pittsburgh 22, Pa. National Industrial Sand Assn. (V. P. Aheam), 1325 E St N. W,, Washington 4, D. C National Lead Co. (Alex Stewart), 111 Broadway, New York 6, N. Y. National Lime & Stone Co. (L. G. Love), First National Bldg, Findlay, Ohio National Refractories Co, Inc. (R. A. Hitchins), 17th Floor, Lewis Tower Bldg, 225 S. 15th St. Philadelphia 2. Pa. National Research Corp. (Philip J. Gough), 70 Memorial Dr, Cambridge 42, Mass. Navias. Louis,* Research Lab, General Electric Co, The Knolls. Schenectady, N. Y. Navratiel, Hans, Jahnstr. 3, Lauf/Pegnitz, Bavaria. Germany Neal, James E, 164 Sandford Ave, North Plainfield. N. J. Neely, Homer E, Jr, 404 E. 11th Ave, Tarentum, Pa. Neff. Edward D, Box 205, Templeton, Pa. Neff John M,, Armour Research Foundation. 35 W. 35rd St, Chicago 16. 111. Neff. Russell C. Box 2908. Brentwood. Mo. Neiman, Robert. Whip-Mix Corp, Inc, 411 W. Avery Ave, Louisville 8, Ky. Nelles. Maurice. Borg-Warner Corp, Central Research Lab, Bellwood. 111. 433 Nelley. John W.. 313i Raleigh Ave, Pittsburgh. Pa. Nelson, Forrest W, 3341 S. Taylor. Milwaukee 7. Wis. Nelson, James A., 204 Ceramics Bldg.. University oi Illinois. Urbana. III. Nelson McCoy Pottery Co. ( Nelson McCoy Melick). Roseville. Ohio Nelson. Karl F.. (S). 296 Berkshire Kd.._Clemson. S. C. Nelson. Robert F. (Si. 4U8 Windcrest. State College. Pa. Nelson. Robert T.. Columbia-Geneva Steel Div.. Box 269. Salt Lake City 10. Utah Nelson. Wiiliam I. (S). Box CC. Alfred Univ.. Alfred. N. Y. Nerenstone. Marc A. (S). Box 26y. Alfred. N. Y. Netter, William S., 18081 Mendota Ave., Detroit 21. Mich. Neuhaus. Jacques. 18 Rue Charles Lamtte. Neuilly Sur. Seine, France New, Ryland H., National Sewer Pipe Co., Ltd.. Swansea, Toronto 3, Ont., Canada Newark, Frank F., Aluminum Co. of America, 1450 Terminal Tower, Cleveland 13, Ohio Newark. Martin. 108 S. Third Ave.. Highland Park. N. J. Newbold General Refractories, Ltd., Gavey St., Mayfield, N. S. W,, Australia New Castle Refractories Co. (R. W. Rowland). New Castle, Pa. Newcomb, Rextord, Jr.,f 1008 Wisconsin St., Lake Geneva, Wis. New Jersey Porcelain Co. (J. M. Gilnllan), Box 908. Trenton 5. N. J. Newkirk, Terry F.. Portland Cement Assn. Fellowship, Na tional Bureau of Standards, Washington 25, D. C. Newman. Ruber: W, R. R. 5. Putnam Rd, Schenectady. N. Y. Newton. Avery C,, The Refractories Institute, First National Bank Bldg., Pittsburgh. Pa. Nicholson. Albert H., the Federal Glass Co., 515 Innis Ave, Columbus 7. Ohio Nicholson, Clifford M..T 2940 Neil Ave.. Columbus 2. Ohio Nicolin. Jean. Etabl. Jaby Freres, 6 Rue de Marignan, Paris 8. France Nieman, A. H.. Ohio Hydrate & Supply Co., Woodville, Ohio Niemczura. Staniey W. (SI. 254 Cooper Lane. Rutgers Uni versity Heights. New Brunswick. N. J. Niklewski. B. K.. Main Enamel Mig. Co.. Ltd., Gothic Works, Angel Rd.. Edmonton. London N. 18, England Niles Fire Brick Co. (J. R. T. Clinganh 165 E. Park Ave., Niles, Ohio The Nippon Toki Kaisha. Ltd. (Jun Isagawa). =1. Noritake- shinmachi. Nishiku. Nagoya. Janan Nisuia. Chester A.. 716 Main St., Riverton, N. J. Niyogi. D. P.. Sur Enamel & Stamping Works, Ltd., 24 NIiddle Rd.. Entally, Calcutta. India Nobes. Frederick 1_ Carborundum Co., Ltd.. Manchester, England Nobles. Melvin A., c/o C. H. Carr. 765E. N. 13th St, Abilene. Texas Noe. Georges J. F., 10 Rue Maurice aes Ombiaux, Bruxelles III, Belgium Nohle. Richard C.T (J). The Claycratt Co.. Box 866. Columbus 16. Ohio Nolan. William F. (Si. Deposit. N. Y. Norame. Nicholas ].. 169 W. Main St.. Rahway, N. J. Nordberg, Martin E.. 134 E. Fourth St.. Corning, N. Y. Nordgren. Harry Aktiebolaget Gustavsberg Fabriker, Gustavsberg. Stockholm. Sweden Nordmeyer. Rudy L., Mission, Texas Nordyke. J. S, Eagle-Picher Co., 1501 Oliver Bldg., Pitts burgh 22. Pa. Noritake. Henry M,, 2122 Alvin. Toledo 7, Ohio Normandeau, Pierre, 3660 Hutchison St., Montreal 18, Que, Canada North American Refractories Co. (E. M. Weinfurtner), Na tional City Bank Bldg.. Cleveland 14, Ohio North Carolina Feldspar Corp. (W. F. Deneen), Erwin, Tenn. Northwestern Glass Co. (Edward S. Campbell), 5801 E. Marginal Way, Seattle 4, Wash. Northwestern Terra Cotta Co. (Burnette Purcell), 1750 Wrightwood Ave.. Chicago 14, 111. Norton Co. (O. J. Whittetnore. Jr.), Worcester 6, Mass. Norton. Charles L.. Jr..* 161 E. 42nd St.. New York. N. Y. Norton. Frederick H..*t Dept, of Metallurgy. Div. of Ceramics. Massachusetts Institute of Technology. Cambridge 39, Mass. Norton. James M. (J). Great Valley. N. Y. Norwood. J. Nelson (Life). Alfred University, Alfred. N. Y. Novak, John P. (J). 823 S. Scoville Ave., Oak Park, 111. Novinski, Frank S.. 916 Everett St.. Camden, N. J. Nowell, Dorroh L.. Jr., 202 Broad St.. Augusta, Ga. Noyes. Frank E. (S), Box 1141. Ojai. Calif. Nvquist. Soy A.. 3650 Beechwav Blvd.. Toledo 14. Ohio 4.J4 O Oakley, W. W.,* Box 35. Corning, N. Y. O'Bannon. L. S., 2239 Farleigh Road. Columbus 12. Ohio Oberst. Clair R., Industrial Ceramic Products, Inc., 965 W. Fifth Ave.. Columbus 12. Ohio O'Connor, James H., 130 Murdock Rd., Baltimore 12. Md. Odom, Paul R. (S), 4194 Villa Ave., Macon. Ga. Oesterle, Henry, Roesch Enamel & Mig. Co., W. Main i N. 24th Sts., Belleville. III. Oesterle. Robert A, 2427 W. Main. Belleville, 111. Ofnll. P. M., Amsler Morton Corp., Chamber of Commerce Bldg., Pittsburgh 19, Pa. Ogden, Ellsworth P.,* Harrop Ceramic Service. 35 E. Gay St, Columbus. Ohio Ogden, John T.,* Class Industry, 55 W. 42nd St, New Ycrk 36. N. Y. Ogden. William D.. Jr. (S). 252 E. 18th Ave.. Columbus. Ohio Ohio Brass Co. (J. J. Taylor). Barberton. Ohio Ohio Clay Co. (Norman E. Denison), Box 1776, Cleveland 5. Ohio Ohio Hydrate & Supply Co. (A. H. Nieman), Woodville. Ohio Ohliger. Lewis P. 2'jy Ridgeview Dr, E. Rochester. N. 't. Ohnystv, Basil (S), 509 E. Chalmers. Champaign, III. Ohrstedt. L. E, American Ceramic Society, 2525 N. High S:., Columbus 2, Ohio Old Hickory Clay Co. (L. F. Powell), Box 271 Paducah, Ky. O'Leary, W. J, J00 E. 25:h St, Wiimington, Dei. Olenchuk. Daniel L. (j). 218 Ave. B,, Bayonne. N. J. Olive. Frank C, 509 Chamber of Commerce Bldg, Indian apolis 4, Ind. Oliver. Evan M,, Shady Lane. R. R. 3. Anchorage. Ky. Oliver, John C, Porcelain Enamel Institute. Duputit Cir.lr Bldg, 1346 Connecticut Ave, Washington 6. D. C. Oliver. John H. fS). 76 Norman 5:, Corning. N. Y. Oliver, W. V, French Saxon China Co, Sebring, Ohio Olsen, Eric, 390 Elgin Ave, Dundee, 111. Olsen, John M,, 38 Rector St, Metuchen, N. J. Olsen. Rangwald 5,' 1137 Grant St, Evanston. 111. Olson, E. E, A. H. Heiscy & Co, Newark. Ohio Olson, Hjalmar, Aktieboiaget Gustavsbergs Fabriker, Gus tavsberg. Sweden Olympia. Fred (S). 396 Washington St, Newburgh. N. Y Oman, Roy E, Corning Glass Works. Parkersburg. W. Ya_. Onondaga Pottery Co. ,R. H. Pass). 1256-53 W. nyette St, Syracuse 4, N. V. Operhall. Theodore. 1999 Guoin St, Detroit 7, Mich. Opper, Fred H,, Savannah Kaoiin Co, 314 American Bldg, Box 184. Savannah. Ga. Oravec, Joseph A, 3731 N. Newland Ave, Chicago 34. 111. Orefraction, Inc. (John F. Hunt), 7425 Thomas St, Pittsburgh 8. Pa. Orme. Wiiliam C. II (Jl. 419 N. 14th St, Cambridge. Ghi > Ormsby, Walter C. (S). 311 E. Beaver Ave, State College. ?a. Omella, LeRoy F. (J), 3206 Uptcn Ave, Toledo 6, Ohio Orr. David 3. (S). Box 221, Alfred. N. Y. Orr, Stanley C, Pfaudler Co, Elyria, Ohio Orth, Howard S, Industrial Ceramic Products, Inc, 965 W. Fifth Ave, Columbus 12, Ohio Ortman, Fred B,,*t Gladding, McBean & Co, 2901 Los Feiiz Blvd, Los Angeles 39. Calif. Ortman. Robert C, 4419 Union St, La Canada, Calif. Orton, Edward, Jr, Ceramic Fonndation (J. L, Carruthers), 1445 Summit St, Box 146, Columbus 1, Ohio Orton, Mrs. Edward. Jr, 39 W. Torrence Rd, Columbus, Ohio Orzano. Michael J.T (J). The Claycratt Co, Box 866. Columbus 16. Ohio Osawa, H. K., 3512 E. Fifth St, Los Angeles, Calif. Osborn, Elburt F, School of Mineral Industries, Pennsyl vania State College, State College, Pa. Osborn. Walton O, North American Refractories Co, Water St, Lock Haven. Pa. Ostrander, Eugene C, Kopp Glass, Inc, Box 8255. Swissvaie. Pittsburgh 18, Pa. Otley, J. D, John B. Kelly Inc. of Penn, 1720 Cherry St, Philadelphia 3, Pa. Ottawa Silica Co. (George A. Thornton), Box 437, Ottawa. III. Otto, George H, 53 W. Jackson Blvd, Chicago 4, 111. Ottoson, Axel.t 4300 Highland Ave, Shadyside. Ohio Outcault, Harry E, St. Joseph Lead Co, 250 Park Ave, New York 17, N. Y. Owen, Betty T, American Ceramic Society, 2525 N. High St, Columbys 2. Ohio Owen, Frederick E, Electrical Refractories Co, East Pales tine, Ohio Owen, J. D, R. Fowler. Ltd, Fitzroy St, Marrickvilie, Syd ney, N. S. W, Australia Ceramic Bulletin Owens-Coming Fiberglas Corp. (August C. Sicicrt). Newark, Ohio Owens-Illinois Glass Co. (J. C. Hamilton i. olll .loth Ave, Oakland. Calif. Owens-Illinois Glass Co. (K. W. Summers). General Eng. Dept.. Alton. III. Owens, .lames 5.. 271 McMillan Rd, Grosse Pointc Farms .10. Mich. Owen.-. Robert K. (Si. Nnrtli American Reiracmrie- Ci>, National City Rank. Cicvclanil 6. Ohio P Pabst. Julm G.. 252 N. Main St.; Butler. Pa. Pahst. John. G.. Jr. (J >. Jolnis-Manville Proil. Curp, Zeliennple. Pa. Pacific Clay Products (John D. Fredericks), Box 145, Sta. A., Los Angeles 21, Calif. Pacific Coast Borax Co. (M. H. Pickard), Div. of Borax Con solidated, Ltd,, 100 Park Ave., New York 17, N. Y. Packman. Willard D.,T 152S Lisbon St., East Liverpool, Ohio Paden City Pottery Co. (Merrill C. Sondles), Paden Citv, W. Va. Pacihelit. Ralph C, 407 St. Peter-bure. Rohinsnn. 111. Padiila. Federico. Apartado Postal 2678J, Mexico, D. F. Part. John A.. 222 N. Sixth St.. Reading, Pa. Panord. Ray W..* Acme Brick Co.. Box 425. I'nrt Wurth 1. Texas Page-Madden Co, Inc. (Jesse F. Madden), 76-96 Second St, Box 110, Mineola, N'. Y. Palamara. Louis M.. 146 N. Walnut St, Logan. Ohio Palmer. Delos M,, 4401 Jackman Rd, Toledo 12. Ohio Palmer, Joseph D, 2422 Ontario Ave, Niagara Falls, N. Y. Palmer. Ruius N, 476 Broadmoor Ave, Pittsburgh 24. Pa. Palmer. W. F, 6629 Washington Ave, Evansviile. Inti. Palmer:, Victor R, Casilla Correo 28. Sue. Veiee, Sarsfield 7, Buenos Aires, Argentina Palmuur. Havne. III.* 4X36 MacArthur Rlvtl, N. W, Wash ington. D. C. Paltier. Clifford (J). 1100 Peace 5t,, Pella. Ia. Paper Makers Importing Co, Inc. (Charles Brian). 44 S. Second St, Easton, Pa. Pappis. James (S), Box 747, Alfred. N. Y. Parcel. Martin W..t R. R. 1. East Palestine. Ohio Parikh. Niranjan M. (S). Div. of Ceramics. Dept, of Metal lurgy, Massachusetts Institute of Technology, Cambridge 29. Mass. Parker. Giicden M, Jr, Giidden Pottery, Inc, Alfred, N. Y. Parker. Harry/ 8706 Old Bladenshurg Rd, Silver Spring. Md. Parker, james W,, Ir. fit. 34A Woodland Terrace. Columbia. S. C. Parker. Raymond W, c.'n Alliance "lay Products Co, Box 746. Alliance. Ohio Parmelee. Clifford H, 214 Warnam St, Syracuse 8. N. Y. Parnham. H, General Refractories. Ltd, Workson, England Parson. James A. (J). 5760 E. New York St, Indianapolis, Ind. Parsons, Douglas E. Building Technology Div, National Bureau of Standards. Washington 25, D. C. Parsons. Joseph R,, Chicago Fire Brick Co, 7521 S. Ashland Ave, Chicago 20. III. Pask. Joseph A,t Div. of Mineral Technology, University of California, Berkeley 4, Calif. Paspy. Stanley F,, Jr, Ferro Corp, 4150 E. 56th St, Cleve land 5. Ohio Paaa & Seymour, Inc. (R. H. Pass), Solvay Station. Syracuse 9, N. Y. Pass, James S, R. R. 2, Cazenovia, N. Y. Pass. R. H,, Onondaga Pottery Co, 1856-58 W. Fayette St, Syracuse 4, N. Y. Patriarca. Armando S. E, Piedras 382, Buenos Aires. Argen tina Patrick. Howard (SL Box J -2. Alfred. N. Y. Patrick, Robert F,, Pemco Corp, 2554 Greenmount Ave, Baltimore 18, Md. Patterson. Harvey E, T. L. Smith Co, 2825 N. 32nd St, Mil waukee 10, Wis. Patterson. Richard C. (S). 616 N. Dellrose Ave, Wichita. Kansas Patton. Richard A, Penn Search Corp, 1227 Wisconsin Ave, Pittsburgh 16. Pa. Paulson, Fred H,, 28 Greendale Ave, Worcester 6, Mass. Pausewang. Margaret J. (5). Ohio State Univ. Exp. Sta, Columbus. Ohio Pavlish. Arnoid E,* Kelley Island Lime & Transport Co, Leader Bldg, Cleveland. Ohio Pawlowski. Edward J, 11 Morris St, Amsterdam. N. Y. Pearce. Charles S,* American Ceramic Society, 2525 N. High St, Columbus 2, Ohio Vol. 31. No. 10 (1052) i'varcv. !J!nl:n (j, B.,rvi: Lluy Product- (_'u, I'lca.-au: l/ardvu. PeNa.rcCh, William M, Akron Porcelain Co, Akron 14. Ohio Pearson, E. J. & J, Ltd. (Charles A. G. Thomas), Firebrick PeWarosrokns,. ESdtowuarrbdridPg.e,BEansigclaRndefractories, Inc, Maple Grove. I'eOcihninoan. Alexander*. Development Dab, Ryan .Aeronautical Co, San Diego 12. Calif. Peck. J. Clair/ 218 Play ground Dr, WVsl Reading. Pa. I'eckiiam. George W,, Coca-Coia Co, 310 North Ave, N. M-. PeAdtrliacnkt.a W1.. GWa.,, .Armstrong Cork Co, Millville. N. J. Pedu, Richard K. (J). Mid-West Abrasive Co, 510 S. Wash ington St, Owosso. Mich. Peel. G. N, Associated 1-ead Manufacturers. Ltd, Crescent PeHileoru,seK. aNrlewEc,,a*stlHe aurptfoonrdT-Eymnep. ir1e. ECnog,laDndiv. of Emhart Mfg Co, Box 1620. Hartford 2. Conn. Pelham. Alphonzo, 15 North Dr, Kensington, Great Neck. L. I, N. Y. Preeulleevy,, Kp*ecnnnnect;hn Pelz. Robert W, M27,,06EGasrotv--S-e-- .wp. .ao,raota4dj,. DOnPnahvriamon.a o 9. r\i_* Oh.o PPeemmccoo CCoorrpp.. (( Richard H- Turk). 4=601 Eastern Ave, Balt. more. 24, Md. Pence. Forrest k Ceramic Engineering Austm 12. Texas Research, pStStS Co" (William J. Woods). Box Lm- 587 PeLnenwsiysltvoawnnia, PSaa. lt Mfg- Co. (R. S. Roeller;, 1000 Widener PeBnlndsgy,lvPanhiialadWeliprehiaG7la,sPs *-Co. I R. K. Carr). Dunbar. Pa. Pereira. Armando de Arrutla.* Caixa Postal 193d. San Paulo. PeBreranyz,il Andrew. Percny Equipment. Co, 893 Chambers Rd- Box 153. Station A. Columbus. Ohio Perkins Harrell L, Central of Georgia R. R, 501 Rhodes - Haverty Bldg, Atlanta 3, Ga. Perkins. Waiter W, 600 De W itt it, Linder, N. J. I'erricone. Charles (S). 4206 Ave. T. Galveston. Texas Perry, Robert F, Victor Insulators, Inc, Victor, N. Y. PPeerrtruyc. h.T.WRaaltyer iAS.)R. ,,RFortaann.klTinexIansstitute. Parkway at 20th St, PePshkiinla. dWel.phLia, E3.dwPain. M- Knowics China Co, Newel:. M. -a. Peters. Forrest 1, 2 Meadow Brook Apts, Corning. N. '= Petersen. Fred A,"' Hunter-Thomas Assoc, Keith Bldg, Cleveland 13. Ohio Peterson. Albert F. |S)* Box 23/. Alired. N. Y. Peterson, E. A, National Engineering Co, 549 W. Washing ton Blvc, Chicago 6, WPeterson. Jack D,, 5029 123rd St, Toledo 11, Ohio Peterson. Rainii G. (: JJ )) .. Rrs-. R.s-. -_ Box -.I..',..7.....A..........T....a...r..e...r....t..u..nt. Pa. Peterson. W H T- -V-a-lientine pF;irre, Brick Cfno, Woodbridge N. J. Petit. Daniel. Societe de Technique Industrielle. 20 bis. Rue La PeBtroieet.ie.EaPra:risC,(*37'i.NForrathnceA. merican Refractories Co, 101- National Citv Bank Bids, E. Sixth St, Cleveland 14. Oh*" Petrie. Llovd R,, 404 \V. Snyder St, Abingdon, III. Pett. Tyler' G,, 261 Antlers Dr, Rochester 18 N. Y. George F. Pettinos, Inc. (George F. Pettinos, Sr.), 1206 PeLttoincouss.t GSeto,rgPehFila, dSerl.p. hGiaeo7r,gePaF.. Pettinos, Inc, 1206 Locust St, Philadelphia 7, Pa. Petty, Frank. 5506 Sun**yside Ave, Chattanooga. Tenn. Petty. Howard E,, 3131 Ryons- Lincoln 2. Neb. Pfaudler Co, (Sidnev W. McCann). 1000 West Ave, Roch ester 11. N. Y. Pfeiff. C. H,, Box 527. TyfeUHthen, N. J. Pfeiffenberger. Lucas E,, 463 Bluff St, Alton. IIL Pfeiffer, Wilbur H,,*t Engineering Lab, Plant 2, Frigidaire Div, General Motors Corp, Dayton 1. Ohio Pfleger, George E,, Harshaw Chemical Co, 2237 S. Garfield. PhLaodskeA. nVg.eleSs, 2C2e. nCtraalilf.Potteries. Ltd, Itwari. Nagpur 2. India Phelps Dodge Corp, StoTenci Branch (I_ I. McDaniel). PhMeioprse,nGci.iraArrdiz.W, 410 E- Magnolia Dr, Morrisville. Pa. Phelps. Stuart M,,* Mellon Institute. Pittsburgh 13, Pa. Phillips, Adrian W, Jr, 94 Lincoln Ave, Highland Park, N. J. Phdlips. Charles J, Dunbar Glass Corp, Dunbar. W. Va. Phillips. Donald G, 2S04 Lynne Ave, Hatboro. M. R, Pa. Phillips, Edwin L,,f Unit"1 Feldspar & Minerals Corp, 10 E. 40th St, New York 16. N. Y. Phillips, Gordon D, Olean Tile Co, Olean, N. Y. 435 Phillips. Jack E., Bex 44, Lakewood Ave, East Quogue, L. I., -V V. Phillips. James G,- Dept, oi Mines & Technical Surveys. Mines Eranch, Industrial Minerals Div., Lydia St., Ottawa, Canada Phillips. Leigh F. (Si. Box 37. East Quogue. L. I.. N. V. Phillips. W Eric. 50 St. Clair Ave. \\ , Toronto. Ont.. Canada Phoenix. Richard Cari (Si. Dept, of Ceramics, Rutgers Uni versity. New Brunswick. X. J. Pickard, M. H., Pacific Coast Borax Co., Div. of Borax Con solidated. Ltd.. 100 Park Ave.. New York 17. N. Y. Picke.t. Albert R.. Aluminum Co. oi America. 801 Guli Bldg., Pittsburgh 19. Pa. Pieper. Arthur O., 105 Trevor Court Rd., Rochester 10, N. Y. Pierce Glass Co. (J. G. Bozzo), Port Allegany, Pa. Pierce. J. Allen. 798 Chalmers Place, Pittsburgh 16, Pa. Pierpont. Harlan T.. Jr.. New Bond St.. Worcester 6, Mass. Pierson. James F,T 1707 Weston Ave., Towson 4, Md. Pike, Robert D.t Brook Lane, Greenwich, Conn. Pilkington, .Lawrence H. A., Messrs. Pilkington Brothers. Ltd.. Glass Works. St. Helens, England Pincus. Alexis G., 1061 Glenwood Blvd., Schenectady 8, N. Y. Pinnev. J. M.. Harker Pottery Co., East Liverpool, Ohio Pinnow. Harley R.. Box 269. East Liverpool, Ohio Pinotti, Fred D, 2324 Middlesex Dr., Toledo, Ohio Pittenger. John T., Box 207. Newell. W. Va. Pittman. Jack (SI. Box 257. R. R. 2. Mercer Island. Wash. Pittman, William C.. 1119 Omena Place, Cincinnati 38, Ohio Pitts, Joseph W,, Enameled Metals Section, National Bureau of Standards, Washington 25, D. C. Pittsburgh Corning Corp. (Waiter D. Ford), Technical Dept., Port Allegany, Pa. Pittsburgh Plate Glass Co. (S. F. Cox). Creighton. Pa. Pixiey. David if. (S). Box C C. Alfred, N. Y. Pixley. Francis V. (J). Paris Rd.. New Hartford. N. Y. Place, Tom M, 634 Glenwood Rd., Apt. 6, Glendale 2. Calif. Place. Thomas M., Jr.. 20611 Ridgewood Ave., Warrensville Heights. Cleveland. Ohio Plagge, Vernon L.. 4g9 Park Ave., East Orange. N. J. Planje, Christian W,,t 1500 First Ave. S., Seattle 4, Wash. Planje, Theodore J. M, Box 417, Rolla, Mo. Plankenhom. William 204 Ceramics Bldg.. University of Illinois, Urbana. 111. Pleasants. Luther E., Tr, 6002 Brookfield Rd., Richmond. Va. Ploetz. Edwin C. H.. 708 S. Lincoln Ave.. Kankakee. III. Ploetz, George L,,* Filtros. Inc.. East Rochester. N. Y. Plumbo, Victor A.. General Glass Equipment Co., 5 S. Vir ginia Ave.. Atlantic City. N. J. Plummer. Harm/ C..* Structural Clay Products Institute. 1520 18th St. N. W, Washington 6. D. C. Plummer, J. H., Glass Fibers. Inc., Waterville. Ohio Plummer. Norman, State Geological Survey of Kansas, Law rence. Kar.. Plunkett. Jerry D. (SI. Box 217. Dixon. Mo. Plunkett. Richard G.. 623 Woodbine Ave., Rochester 19, N. Y. Plusch, K. A..* 1014 Oak Lar.e, Philadelphia 26. Pa. Plusch. John A.. 63 Spruce St.. Westfield. Mass. Poland. Milton E. (S). 117 W. Patterson Ave.. Columbus 2, Ohio Polar, Alfredo. Pachacutec 2269, Urbanizacion Lobaton, Lima, Peru Pole. Gordon"R.,*7 2592 S. Shore Blvd.. White Bear Lake 10. Minn. Poles, Alfred; P,, 325 Arborlea Ave., Morrisville. Pa. Polhemus. D. W,, Carborundum Co., Bristol. Pa. Polk, Arthur ,-E, 3901 S. Morgan St., Chicago 9, 111. Pollock. Svivia S.. R. R. 2. Mayville. N. Y. Polynesian Arts (Hugh H. Gantt), Mayfield, Ky. Pomeroy, William T, Sterling China Co., East Liverpool, Ohio Pond. Marvin H., 224 Thornton St.. Hamden 14, Conn. Poole, James P., Brockway Glass Co., Inc., Plant 2. Brock way, Pa. Popp, Richard A.. Bridgevilie Glass Works, General Electric Co.. Bridgevilie, Pa. Porcelain Metals Corp. of Louisville (P. 3. McBride), 1400 S. 13th St., Louisville 10. Ky. Porst. Edward G., 1418 Stonewood Rd.. Baltimore 12. Md. Porter. Frank R.,*? 318 E. Clark St., Crown Point. Ind. Porter, Garnett H.. 54 Pomeroy Ave., Pittsfield. Mass. Porter. J. I-- Kaiser Aluminum & Chemical Corp., Box 1031. Baton Rouge. La. Porter. Rudyard. United States Steel Co., 208 S. LaSalle St, Rm. 1655, Chicago 90, 111. Porter, Sidney C.. Box 54, E3st Liverpool. Ohio Porter. Wallace S.. 709 Eventide Dr.. San Antonio. Texas Posey Iron Works, Inc. (Frank A. Fix), Lancaster, Pa. 436 I'usluszny. Raymond F.. 1712 Pir.e S:.. Philadelphia 5, Pa. Post. Benjamin F,r S Charles S:.. Westfield, Mass. Poste, Emerson P,*T 309 McCallie Ave., Chattanooga 3. Te.nn. Postlewaite, Donald E..t Universal-Bundle Corp., Box 300. Redlands, Calif. Potters Supply Co. (William W. Irwin), East Liverpool, Ohio Potts, Amos P,' 359 E. Main St., Logan, Ohio Pouilly. Marcel L, 14902 Center Ave., Harvey, 111. Poulton, Robert F.. 2763 N. Congress Rd., Camden 4. N. J. Powell. John A., 16 Fourth St.. Frenchtown, N. J. Powell, L. F,, Old Hickory- Clay Co.. Paducah, Ky. Powell. O. E., Indiana Drain Tile Co., Inc., Brooklyn, Inc. Powell, Richard E., Dept, of Chemistry, University of Cali fornia, Berkeley 4, Calif. Powell. Richard H. (J), 1279 X. Main St., Jamestown. X. Y. Power, Henry R,, 1020 James Ave., Niagara Falls. N. Y. Powers. Don W. (S), 2701 Nueces St., Austin, Texas Pratt. Donald S. iS). 810 Lake St., Niles. Michigan Precision Grinding Wheel Co, Inc. (Roland J. Clark), 8301 Torresdale Ave, Philadelphia 36, Pa. Prescott, Frank R,, 1819 Kimball Ave, Arnold, Pa. Prescott, Mary Jane (J). 2126 Sherwood Ave, Louisville, Ky. Preston. Frank W, Box 149, Butler, Pa. Prewitt, J. K, Elgin Standard Brick Mfg. Co, Elgin, Texas Prey, Arthur H., Carborundum Co., Niagara Falli, N. Y. Price. Glen M, General Reiractories Co, Box 1673. Baltimore 3. Md. Price. James E, 44 W. Guernsey Ave, Abington, Pa. Price. Warren L, 70 E. Fourth St, Corning, N. Y. Priddv, K. O, Barium Reduction Corp, South Charleston 3, W. Va. Priestley, J. Edward, Messrs, McSkimming & Son, Ltd, Box 923, Dunedin. New Zealand Prigge. Robert E. (J). 148 Lake Ave, Buffalo 19. N. Y. Primm. Herbert E, 1835 Eaton Ave, San Carlos, Calif. Priiicr Alan T,, Mines Branch, Ottawa. Ont, Canada Prindle. William R. (S), 354 Westgate West, Cambridge 39. Mass. Prior, Gordon M,, 220 Haven Ave, Scotch Plains. N. J. Prior. Haroid D,? R. R. 1. Valley Rd, Millington, N. J. Proctor. W. J.. Jr, Southern Clay Inc, Gordon. Ga. Proe. Joseph A, Jr,f 5214 Niagara Ave, Niagara Falls, N. Y. Prokopec. Robert. 704 Riverside Ave, Muncie. Ind. Promat Division, Poor it Co. (A. E. Chester), 851 5. Market St, Waukegan. 111. Pryor, Edward K,, 902 N. Acacia, Whittier, Calif. Puerto Rico Clay Products Co. (F. Torres Campos). Box 4729. San Juar, Puerto Rico Pulaski. Marie E, 1222 E. 79th St, Cleveland 3. Ohio Pumphrey. Wiiliam I, Murex Welding Processes Ltd, Hert ford Rd, Waltham Cross. Herts. England Puoulidv, Alexander, 34--18 91st St, Apt. A 41. Jackscn Heights. 72. L. I, N. Y. Purcell. Burnette. Northwestern Terra Cotta Corp, 1750 Wrightwocd Ave, Chicago 14. 111. Purdy, James A, Fischer & Porter Co, County Line Rd, Hatboro, Pa. Purdv. Mrs. Ross C, 59 E. Longview Ave, Columbus 2. Ohio Purnell. Hugh J, 761 Loretta St, Pittsburgh 17. Pa. Pyro Refractories Co. (O. E. Miller), Box 466, Oak Hill. Ohio Q Quick. Donald A. (S). Box F. F. Alfred. N. Y. Quigley Company, Inc. (R. J. Demaison), 527 Fifth Ave, New York 17. N. Y. Quinn. Wiiliam J, 11994 Hampton Ave, Monterey Park. Calif. Quirk. John F, 2235 Barrymore Ave, Columbus. Ohio Quirk, Virgil P. (J). University Qub. State College, Pa. R Rabe, N. A, 10 W. Palmer Ave, Collingswood, N. J. Rabin. William J. (J). 4&30 N. Seventh St, Philadelphia 20. Pa. Racine. Fritz (S), Education Nationale. Port-au-Prince, Haiti, W. I. Radio Materials Corp. (R. D. Bourgerie), 3325 N. California Ave, Chicago. III. Ragaiz. Eugene C, Allen-Bradley Co, 156 W. Greenfield Ave, Milwaukee 4. Wis. Raggon. Frank C, Jr, 4202 Bowen Rd, Toledo 13, Ohio Raible. A. J, John Douglas Co, Cincinnati 16, Ohio Raine, Frank F,t 111 E. Vine St.. Mexico. Mo. Rait, J. R, Research Dept, Kadfields, Ltd, E. Hecla Works, Sheffield 9. England Ralston. O. C,* 4333 Ciaget: Rd, Hyattsville. Md. Ceramic Bulletin Ralston. T. E, Harhison-W'alker Rctractories Co., 1800 Farmers Bank Blcit;.. Pittsburgh 22. Pa. Ramirez. Jaime i J >. 5045 Liudell 3lvd.. St. Louis 8. Mo. Ramm, Eric, H. L. Brisbane & Wunderlich, Ltd., Lord St., East Perth, West Australia Ramsden. C. E., C. E. Ramsden & Co., Ltd.. Foley Colour & Chemical Works. Fenton. Stoke-on-Trent. Endian J Ramate Co. (Louis J. Jacobs), 2563 W. 18th St.. Chicago 8. 111. Randolph. Hal F., Mexico Refractories Co., Mexico, Mo. Rankin, James J., St. Joseph Lead Co.. Box 97, Monaca, Pa. Rankine. Adam S, Jr., Martinsville. X. J. Rao, Bit V. Janakirama (Si. Box 66. Alfred. X. V. Rao. Eleswarapu C. S. (S). School of Mineral Engr, Uni versity of Washington. Seattle 3, Wash. Rapp, Carl H,* Globe-Union, Inc., 900 E. Keefe Ave.. Mil waukee 1, W'is. Rapp, Howard C.f (J), -104 X. Main St., Moron, 111. Rapp, S. W.. Jr., Morton Pottery Co.. Morton. 111. Rase, Daniel E. (5). 137 E. Park Ave., State College. Pa. Rasmussen, R. K., Mississippi Glass Co., Fullerton. Calif. Rasmussen, Wayland G., Mason City Brick & Tile Co., Mason City, Iowa Rassner. Donald D,T E. 224 Xorthview Ave.. Xew Castle. Pa. Ratcliffe. Temple W.. 244 Buffalo St.. Beaver. Pa. Rathmann, Clyde L.. Church St., Campbell. X. Y. Rauch. Harry W.. 39 X. 12th St.. Lebanon, Pa. Rauscher. Louis C., Jr. (S). 2374 Geneva Ave., Glenside. Pa. Ray, E. Harold. B. F. Drakenfeld 5: Co.. Inc., Box 519, Wash ington. Pa. Ray, John G., Sylvania Electric Products, Cottage Place, Mineola, L. I.. N. Y. Ray, Sushil, 20-C, Southern Ave., Calcutta 26. India Rea, Robert F.. Zonolite Co.. 135 S. LaSalle St, Cnicago 3, 111. Reagan. Cornelius J.. 1243 Fiith Ave.. East McKeesport. Pa. Rebchook. Gregory V. (S). 407 Seventh St., Saskatoon, Sask. Canada Redlich, Paul L.. Rotospray Mfg. Co., 562 Washington Blvd., Chicago 6, 111. Reed, A. J., Carborundum Co., Research Dept., Xiagara Falls, X. Y. Reed. Carl E.. 1326 E. Main St.. Lancaster. Ohio Reed. George Giftcn. Ill (5), 207 Parkside Cir.. Decatur, Ga. Reed. Norman D.T (5). Friiey Hall. Ames, Iowa Reed. Paul H.. 310`/= Fairmont Ave.. X'ew Castle. Pa. Reeves. Harold. .'43 E. Taggart S:.. East Paiestine. Ohio The Refractories Institute ( Avery C. Xewton), First National 3ank Bldg.. Pittsburgh. Pa. Refractory a Insulation Corp. (A. S. Arwine), Port Kennedy, Pa. Regenbrecht. Albert, Jr.. Sylvania Electric Products. Inc., Burlington. Iowa Regout. Joseph F. E, X. V. de Sphinx. Maastricht. Holland Reid. Frank P,, American Ceramic Society, 2325 X. High St, Columbus 2. Ohio Reid. Harry F, ir.. McKay Co.. Grantley Rd.. York. Pa. Reimer, John J,f Keystone Ceramic Corp., Bendersville, Pa. Rein. Peter. 3757 W. Arthington St., Cnicago. I1L Reinker. Arthur G., Johns-Manville Sales Corp., 1530 Guild hall Bldg., Cleveland 15, Ohio Reinker. Gerald E,, Lamp Dept.. General Electric Co., 1133 E. 152nd St., Cleveland 10, Ohio Reiscnel. Frank. 2109 Verriugo. Burbank. Calif. Reising, Joseph A., St. Joseph Lead Co.. Zinc Smelting Div., Monaca. Pa. Reiss. Max S., 406 X. Front St., Wheeling. W. Va. Remington. Victor H., 3. F. Drakenfeid & Co., Inc., 3ox 519, Washington. Pa. Remmev, G. Bickley.* Richard C. Remmey Son Co., Hedley St. & Delaware River. Philadelphia 37, Pa. Remmey. John G., Richard C. Remmey Son Co., Hedley St. & Delaware River, Philadelphia 37. Pa. Remmey, Richard C, Son Co. <G. Bickley Remmey). Hedley St. & Delaware River, Philadelphia 37, Pa. Rempes, Paul E. (S), 499 Midgard Rd.. Columbus 2, Ohio Renfrew, J. Harvey, 31 Linden Park St, Roxburv 20. Mass. Rengering, William A, 3870 Drakewood Dr., Cincinnati 9, Ohio Renouf. Leonard J.. Church St, Youngstown. X. Y. Renskers, Richard H.* (J), 85 Adelaide Ave., Highland Park, X. J. Republic Steel Corp. (B. E. Longwell), 1423 Republic Bldg., Cleveland 1. Ohio Reser. Margie K, 977 Carlisle Ave.. Columbus. Ohio Reuning. Charles R. (Si. 187 E. Main St.. Frostburg. Md. Reuning. George W,, Irv Box 191, Thompsontown. Pa. Reuscne. Frank L.. 218 Orange Ave.. Irvington 11. X. J. Reuter. Raymond. National Aluminate Corp, 6216 W. 66 Place. Chicago 38. 111. Vol. 31, No. 10 (19.52) Reynolds. Harry I. (Ji. Box 1345. Fayetteville. Ark. Reynolds. Harry M.. Renite Co.. Box 565. Sta. A.. Columbus, Ohio Rhoads. Janies L. iS). 254 S. Burrows St.. State Co!legev Pa. Rhodes, Foster T.. Onondaga Potterv Co.. Svracuse 4, X. Y. Rhodes, Fraser Bv 7134 Maple Ave.'. Madeira. Ohio Rhodes. Ralph E, Jr, 930 Forest Ave, Zanesville. Ohio Rhodes, Ralph R,f 1729 Poweil St, Norristown. Pa. Ricci. Edward M. |S 1.317 Main St, Dickson City, Pa. Rice, George A, 1731 Van Cortland St, Schenectady 3. X. Y. Rice. Hal H,' P. R. Mallory 2: Co, Inc, 3029 E. Washington St, Indianapolis. Ind. Rice, Murray J, 133 X. Main St, Alfred. X. Y. Rice. W illiam H. (Si. 218 Highland Ave, State College, Pa. Richard, Giulio A, Via Cernuschi 1. Milano, Italy Richards. Thomas Z. ij i. 36 Stoneland Rd, Shrewsbury. Mass. Richardson. Chauncey A. (S), 4215 Fifth Ave, X. \V,, Seattle 7, Wash. Richardson. H. K,* 4] Vantecaw Ave, Bloomfield. N. J. Richardson. R. C, The Lovell Clay Products Co, Box 24/, Lovell. Wyo. Richardson. Robert M,, 5550 Fifth Ave, Pittsburgh 32. Pa. Richmond, Joseph C,t 4415 Fairfield Dr, Betnesda 14, Md. Richter. C. J, 1501 Clark Bldg, Pittsburgh. Pa. Richter. Hartmut W, Box-4Ll, Rahway, X. J. Rick. Clarence A, 441 La-t&terra Way, Gilroy, Caiif. Ricker, Richard W. ($). Aluminum Co. of America. Aluminum Research labs, Box /72. New Kensington. Pa. Rickey, J. H, Jr, Ironton Fire Brick Co, Box 124, Ironton. Ohio Riddell, W. A, Co. (W. H. Merkel), American Clay Machin ery Div, Bucyrus, Ohio Riddle. Frank H,*T Champion Spark Plug Co, Ceramic Div, Butler Ave. & Grand Trunk R. R,, Detroit 11, Mich. Riddle. Robert F,, Pennsylvania Glass Sand Corp, 140 Scamvix St, Pittsburgh 22. Pa. Ridgeway. Thomas J, Jr. (S), Box CC. Alfred. X. Y. Riebe. Donald R.T (J), Alexander H, Kerr S: Co, Inc, Box 2008. Sana Ana. Calif. Riegert. Richard P. (S). Box 995, Alfred, X. Y. Riehl, W,, Kanovia Chemical & Mfg. Co, 1 W. Central Ave, East Newark. X. J. Rigby, James E,, Blue Ridge Glass Corp, Kingsport. Tenn. Rigterink. Merie D,,* Bell Telephone Labs, Murray Hill, X. J. Riis. 'Asgeir, Robeson Process Co, SOU Fifth Ave, Xew York 18. X. Y. Riker. Leon W,, Jr. (S'i. Spencer. X. Y. Riley, James H, Apt. 4. College Hills Apts, Macon. Georgia Riley, Roger R. ij i. Giadding. .McBean & Co, Pittsburg, Caiif. Rindone. Guy E,, Div. of Ceramics, Pennsylvania State Col lege, State College. Pa. Rispier. Z. W,, c/o Paiestine Glass Works. "Phoenicia" Ltd- Box 168. Haifa. Israel Ritenour. G. L.. 1405-R. Freeport Rd.. Tarentum. Pa. Rithr.er, Henry A.. Ill iS). Box 197, Alfred. X. Y. Ritland. Harold X, Research Lab, Coming Glass Works. Coming. X. Y. Ritter, Joseph S, Adamston Flat Glass Co, Clarksburg, W. Va. Ritz. Joseph W,, Sylvania Electric Products. Inc., 83-30 Kew Gardens Rd.. Kew Gardens. L. I, X. Y. Roach, H. C, American Radiator & Standard Sanitary Corp, 1541 S. Seventh St.. Louisville 8. Ky. Robb. Richard B,, 870 Galloway St, Pacific Palisades. Calif. Roberson, Cletis L, 350 Moull St, Newark, Ohio Roberts, John Taggart,! 419 Park Blvd, Glen Ellyn, 111. Roberts. Mervin Francis. 116 Carpenter Ave, Crestwood Tuckahoe 7. Nr. Y. Robertson. James A, Box 1061. Newark, Calif. Robertson. John M. (S). 103 Kingston Apt. 4. Louisville. Ky. Roberston, R. Kenneth (J), 101 St. Henri St, Laprairie. Que, Canada Robertson, Randal K, 906 University Tower Bldg, Montreal, Que, Canada Robeson Process Co. ('Asgeir Riis), 500 Fifth Ave, XTew York 18. X. Y. Robinson. Alfred W,f 1529 W. 104th St, Chicago 43, 111. Robinson Clay Product Co. (W. E. Robinson), 65 W. State St, Akron 9, Ohio Robinson. F. George. 500 5. Santa Fe Dr, Denver, Col. Robinson, Gilbert C, Box 91. Clemson, S. C. Robinson, G. R,! 224 Mound St, Logan, Ohio 437 Robinson. Louis G.. Louis G. Robinson Labs., Box /6i. Cin cinnati 1, Ohio Robinson. Percy Burrill. Diamond Clay Co.. Ltd.. Hartshill. Stoke-on-Trent. England Robinson. Philip \\\. R. R. 2 Box 533. Washington. Pa. Robinson, Phillip. 23 Pymbie, Sydney. N. 5. W, Australia Robinson. Richard E., 315 5. High St.. Zelienople. Pa. Robinson. Richard R..' 12 Horton St.. Haniinonton. .V. J. Robinson, \V. E.. Robinson Clay Product Co., 65 \V. State St.. Akron 9, Ohio Robson. H. 1... 2 Water S'... Lewiston. N. V Robson. James T,*t Allied Engineering Co., 4150 E. 5oth St, Cleveland 5, Ohio Roche. L. C,* Maryland Glass Corp., 2147 Wicomico St.. Baltimore 30, Md. Rochester, Thomas W.. Jr., 210 Delevan Ave., Corning, N. V. Rocliow. W. F..* Harbison-Walker Reiractories Co.. 1800 Farmers Bank Bldg.. Pittsburgh 22. Pa. Rockwell. Robert E. (S). 4910 234th St.. S. W.. Edmunds. Wash. Rodeier. Howard H.. Rodeier Glass Co.. Box 550. Bcllaire. Ohio Rodgers. Eben, Jr.. Alton 3rick Co., Alton. 111. Rodman, Clarence J., Box S09, Alliance. Ohio Rodriguez, Alfonso F, Viariera Monterrey, S. A., Apartado 162. Monterrey, N. L., Mexico Rodrigues. Antonio. D'Almeida Filho. Av. Automovel. Club 2468. Vicente de Carvalho. Rio <!e Janeiro. Brazil Roehm. Victor J..** 2320 Ridgewood Ave., Alliance. Ohio Roelier. R. 5.. Pennsylvania Salt Mtg. Co., 1000 W'idener Bldg.. Philadelphia 7, Pa. Ron. W. Wallace. 14 Gienside Dr.. West Orange. X. J. Rogers, Edwin J., Scintilla Magneto Div., Bendix Aviation Corp., Sidney, N. Y. Rogers. Gregory" L.. 9500 S. Norwalk Blvd.. Los Nietos. Calif. Rogers. Meivin F..T 55 Golf St.. Corninc. X. Y. Rogers. Thomas S.. 3720 Wiiulom Place. N. W.. Washington 16. D. C. Rolke. Herbert J.,T Sociedade de Engenharia Industrial, Rua Marconi. 23. 8* audar. sno Paulo. Brazil Rollmann. Peter (J). Emmalaan 11. Baarn. Netherlands Rooney. Thomas E.. III. Empire Fire Brick Co.. 219 Murrtty. Fort Wayne. I ml. Roques. Rodney A.. Ceramic Engineering Dept.. University of Texas. Austin 12. Texas Rose. Ralph.1 E. Lavnu, 2. Co.. Box 1'J. Norristown. Pa. Rosen. Louis E. (S). Box 1-9. Alfred. N. Y. Rosenthal, E. K,, 234 Napoleon St., Playa Del Rev. Calif. Rosenthal. Ernst. 246 Park West. Marble Arch, London W. 2. England Rosenwinkei. George O- North American Refractories. 59 E. Van Buren. Chicago. 111. Roseville Pattery, Inc. (Robert P. Windisch), Zanesville. Ohio Roshong, Robert L., Steel & Tube Div., Library, Timken Roller Eearinc Co., Canton 6. Ohio Roslund. J. A.. Globe Brick Co.. East Liverpool. Ohio Ross. Donald W..T A Sail: Glass Co.. Nu. 1-4 Chrome Ginza. Cliuo-ku. Tokvn. Japan Ross. Howard. II iS). 404 S. Burrowes St.. State College. Pa. Russ. Paul F. (J). 320 Cnnstitutiun Ave.. Hellertowu. Pa. Ross-Tacony Crucible Co. (A. M. Johnson), Tacony. Phila delphia 35. Pa. Ross. Victoria Avakian. 537 Countrv Cluh Road. Eugene. Ore. Roth. Harper D.. East River Rq.. Grand Island. N. Y. Rothermel. Joseph J, Corning Glass Works. Research LabCorning, X. Y. Roudabush. Douglas E- 512 Kings Highway. Moorestown. X. J. Roudabush. Henry L.. General Reiractories Co.. Brooklyn. Baltimore. Md. Roudabush. Ned W. (J), Apt. 119-B, St. Davids Park. St. Davids. Pa. Rough. Robert R.. Owens-Illinois Glass Co.. General Research Laboratory, 1700 N. Westwood. Toledo 7, Ohio Roup, Holland.** Globe-Union, Inc., 900 E. Keefe Ave., Mil waukee 1. Wis. Rous. William C,* Jr.. 432 Springheld Pike (Wyoming). Cin cinnati 15. Ohio Rowland. Davidge H..* Porcelain Insulator Co.. Lima. N. Y. Rowland. Donald A.. 622 S. Morton St.. Okmulgee. Okla. Rowland. George R.. 1306 South Ave.. Princeton. W. Va. Rowland. Richards A.. Exploration & Production Tech. Div.. Shell Oil Co.. 3737 3e!laire Blvd- Houston 25. Texas Rowland. Roger W..* Newcastle Refractories Co.. New Castle. Pa. Rowlands. Robert R.f (J). Universal-Rundle Corp., Box 960. New Castle. Pa. 4 38 Roy. Rustum. Pennsylvania State College, 303 Mineral Sciences Bldg- State College, Pa. Royal China. Inc. (B. L. Miller), Sebring, Ohio Royal. Herbert F.." 345 Pilgrim. Birmingham. Mich Royer, Rene. Faiencerie de Badonviller. Badonviller M. et M, France Ruark. A. E- 4810 Roland Ave., Baltimore 10. Md. Rudd. Richard D.. 3335 W. 47th St.. Chicago 32. 111. Rudolf, Paui E., Stoneware Factory Embrach, Ltd., Em- brach (Zurich), Switzerland Rudolphy. Edward C. (J). Metallurgical Lab- U. S. Steel Co.. South Works. 3426 E. 89th St.. Giicago 17. 111. Ruettinger. T. O., Flat Rock Clay Product Co., 26230 Arsenal Rd,, Flat Rock, Mich. Rugg, Ormund I.. 13615 Meyers Rd., Detroit 27, Mich. Rugh, Kenneth A., Garfield Refractories Co., Bolivar. Pa. Run, Edwin (S), 194 Willow Ave., Ext., North Plainfield. N. J. Ruiz. Jorge M.. Amerex. lugs.. S. A- Game 7. Mexico 7. D. [. Ruiz. Robert A- 114 W. Home St.. Vandalia. Mo. Rulon. Riciiard M,, 14 Beach Ave,, Salem. Mass. Rushmore. Murray, Moore S: Munger. 33 Rector St., New York 6. N. Y. Ruso, Felipe B., Edif.cio Beira Mar, Andar Terreo, Apt. 3. Avenida Beira Mar 454, Rio de Janeiro. Brazil Russell. Graden Jackson <S). 2512 Clark Ave.. Raleigh. X. C. Russell, Howard F-, West Lafayette, Ohio Russell. Lewis E. (S). Graduate House. Mass. Inst, of Te-.b.. Camhridgc 59. Mass. Russell. Norman Keith.' St. Davids Park Apts.. St. Davids. f`a. Russell. Ralston. Jr..*T Dept, of Ceramic Engineering. 126 Lord Hall, Ohio State University, Columbus 10, Ohio Russell, Robert G-, R. R. 2. Granville, Ohio Rnatless Iron Co, Ltd. (H. Whitaker), Trice Works, Keigh ley, England Rutkowski, Arthur R- Titanium Alloy Mfg. Div., National Lead Co., Niagara Falls. N. Y. Ryan. D.. Edward Curran Engineering. Ltd.. Cardin. Wales Ryan, Joseph D., 3013 Middlesex Dr.. Toledo 6. Ohio Rvckman. David A- Sr.. 146 X. Washington St- Tifiin. Ohio Ryder, John W,, 2475 X. W. Overton St., Portland 10. Ore. Ryder. Robert J. (S'. Box 1049. Alfred. X. Y. Rylaml. H. W.. Coors Porcelain Co.. Golden. Col. Renders. Gerald F.. National Bureau of Standard-. Div 9.7. Washington 25. D. C. Ryshkcwitcii. Eugene. 4.'> Drake Ave.. Dayton. Ohio S Saaa. Patricio, Troqueies & Esmaltes. S. A- Apartado Postal 371. Monterrey. N". 1... Mexico Saaa. Roberto G- Jr- Keramos. S. A.. Apartado Postal 95o. Monterrey, X. L,, Mexico Saihei. Edward. Carnegie Inst, m Tech- Sciienley Park. Pitt-burgh 13. Pa. Saiier. Edward (S). Box BB. Alfred. N. Y. Sakaye, Takashi (S), Box 4336, Georgia Institute of Tech nology, Atlanta. Ga. Sales. Jose (5). 103 Main St- Key|>ort. X. J. Salisbury. William R.. Lyndon Rd,, Fayetteville. X. Y. Salomon. Allen N- 15 Yale St- Apt. D. Nutiey 10. N. J. Saltmau. Donald. 1831 E. Second St.. I.nug Beach. Calif. Sammons. Frederick C.. General Refractories Co.. 3201 Fruitland Ave., Los Angeles 58. Calif. Sampson, J. Leonard, Mahoning Glass Works, General Elec tric Co., 403 N. Main St., Niles, Ohio Samson, A. William, 3. F. Drakenfeld & Co, Inc., Box 519, Washington, Pa. Samuel, Donald G.. 811 Buttonwood St, Norristown, Pa. Sanborn, Paul H.. 2514--23rd St.. Parkersburg, W. Va. Sand. Reuben. 8 X. Blount St- Madison 3. Wis. Sanders, Clyde A, American Colloid Co- Merchandise Mart, Suite 813, Chicago 54, 111. Sanders, Herbert H, 442 Winchester Rd, San Jose, Calif. Sanderson. K. W, John G. Stein St Co, Ltd, Bonnybridge. Scotland Sandford, Per Johan Folke, Chalmers Tekn. Hogskola, Goteberg, Sweden Sandmeyer. Karl H,, 908 87th St, Niagara Falls, N. Y. Sands, George, Imperial Smelting Corp, Avonmouth, Bristol, England Sanford, Elbert A- 375 Oakridge Dr, Rochester 17, N. Y. Sant, John W,, Universal-Rundle Corp, New Castle, Pa. Santomieri. Lewis S..r 3ox 8. Botkins. Ohio Ceramic Bulletin Sai>|>. Clifford F... American Ceramic Society, 2525 N. Hii;:i St.. Columbus 2. Oliio Sarakauskas. Raymoml (Si. National Carbon Research Labi.. Box 6087. Cleveland. Oliio Sarrai, Edward M., 20001 Laurel Ave., Rocky River 16. Ohio Sauereisen, C. Fred, Sauereisen Cements Co., Sharpsburg Sta., Pittsburgh IS. Pa. Saul. Bert 1,5). 1470 Kay Lane N. IL. Atlanta. Ga. Sauls. J. B.,T Funkhouser Co.. Blue Ridge Summit. Pa. Saunders. Alfred.' Electro Refractories & Abrasives Corji.. Wil lett Rd,, Blasdell, N. Y. Saunders, Hollis S., 0. Hommel Co., Box 473, Pittsburgh 30. Pa. Saunders. R. H., Box 349, Charleston 22, \V. Va. Saveli. Fred H.. 1901 E. Slauson Ave.. Los Angeles 38, Calif. Savioli, Francesco, Istituto Siderurgico Finsider, Villa Brignole-Corso F. M. Perrone, 24, Genova-Cornigliano, Italy Sawai, Ikutaro, Kyoto University, Kyoto, Japan Sawyer, E. C, Central Silica Co., 806 Market St., Zanesville, Ohio Saxe. Charles \V,, 1 Wawecus Rd., Worcester 3. Mass. Saxonburg Potteries (George H. Aderhold), Saxonburg, Pa. Scales. John 3..' 11201 Detroit Ave.. Cleveland 2. Ohio Schaa. Ferdinand A.. Jr. (J l. 11 Peabody Ave.. Danvers. Mass. Schaal. Frank W. Jr fS). 135 Laurence Ave.. Washington. Pa. Schabacker. H. Eric. Erie Ceramic Arts Co.. 423 W. 12:h St.. Erie. Pa. Schaefer, Carl F., 327 Shedteld Ave., Flint. Mich. Schaefer. William H. tji. 814 More wood Ave.. Pitt.-hurgh. Pa. Schaefle, Max, Thayngen, SH, Switzerland Schauss. Eduard P.. 2324 lOStli St.. Toledo. Ohio Scheiby. Frederick. Corning Glass Works. Corning. N. Y. Schell-. Donald C, 1322 N. Massasoit Ave., Chicago 31, 111. Schermerhorn, J. A., National Ceramic Co., 500 Southard St., Trenton 2, N. J. Schiefferle, James A., 2320 Union Ave., Wesieyville, Pa. Schiller, Byron 3.. 74 Greybirch Circle, Belmont. Mass. Schlacks. Richard J. (J). 4319 S. Wigger. Marion. Ind. Schlegel. Roland F.. Caixa Postal 2948. Sao Paulo. Brazil Schlehr. W. Raymond.1, Brockway Glass Co.. Inc.. Lapel. Ind. Schlotzhauer. Leon R.. R. R. 2. Painted Post. N. Y. Schmid. Arthur W,, Arthur W. Schmid Cc., 1414 Investment Bldg., 239 Fourth Ave.. Pittsburgh 22. Pa. Schmid. Robert L, Jr., 3 James Rd.. Hatboro. Pa. Schmidt. Beuther L., Anchor Hocking Glass Corp.. Lan caster. Ohio Schmidt. William G.. General Electric Research Lab.. The Knolls. Schenectady. N. Y. Schmunk. Louis. 70 Dunedin Dr.. Toronto 18. Ont.. Canada Schneider. Fred. Globe-Union. Inc.. 900 E. Keefe Ave.. Milwau kee 1. Wis. Schneider. Matthew P.. Jr. (J). 2931 Wiiiiam Tell St.. Slidell. La. Schneider, Robert K. (5), 237 E. Fifth Ave., Lancaster, Ohio SchoefHer. Paul W. (J ). 166 Pearsall Dr.. Mount Vernon. N. Y. Schoeninger, Irvin W.,f 5250 N. Shoreland Ave., Milwaukee 11, Wis. Schoenlaub, Robert A., Sylvester fit Co., 611 Terminal Tower, _ Cleveland 13, Ohio Schoeppel. Norman.t 10 Elm Tree Dr., Mexico. Mo. Schofield, Daniel A.. Ch. E. B. 310, University of Texas, Austin, Texas Schofield, H: Zane,*t 894 Cnambers Rd., Columbus 12. Ohio Scholes. Addison B.. Sylvania Electric Products. Inc.. 823 Lex ington Ave.. Warren. Pa. Scholes. S. R,,* Box 752. Alfred. N. Y. Schols, Leon V. F. M.. Graaf Van Waldeckstraat 33, Maas tricht, Holland Scnoonenberg, P. J.. Bibliotheekcer.trale. N. V. Philips' Gloeilam- penfabrieken. Eindhoven. Holland Schotsman, J., Kruisstraat 31. Dieren. Netherlands Schottland. A. H., Standard Bent Glass Co, Butler, Pa. Schotts, Walter H,T 23 E. Southington Ave., Worthington. Ohio Schrader. David M. (SI. 5428 Woodbine Ave.. Philadelphia 31. Pa. Schramm. Edward.* Onondaga Pottery Co.. Syracuse 4. N. Y. Schreckengost, Don,* 2617 St. Clair Ave., East Liverpool. Ohio Schreckengost, Viktor, 2366 Noble Rd., Cleveland 21, Ohio Schrickel, Herman H., Jr., 178 E. Pulteney St., Coming, N. Y. Schroeder, Fred W.,*T A. P. Green Fire Brick Co., Mexico, Mo. Schroll, J. R-, Manufacturers Equipment Co., 218 Michigan Ave., Dayton 4, Ohio Scnuenzel. Ernest C. (Si, General Refractories Co.. Clavsburg, Pa. Vol. 31. No. 10 (1052} Schm-'.ze. Ervin W ij). 131(1 E. 1`rumenaiie 3:.. Mexico. Mi' Schuh, Arthur E., United States Pipe fit Foundry Co.. Burling ton, N. J. Schulhof, Andres, Lozadur, Grandes Fabricas Argentinas de Ceramica, S. A.. Eoulogne. F. C. N. G. B.. Buenos Aires. Argentina Schuitz. James B. (Si. 209 X. Canal St.. Alexandria. Ind. Schulz. F.ugene G.. Ir. (S). 930 Grand Concourse. Bronx 56. X. Y. Sehurecht, H. G..** Champion Spark Plug Co., 8525 Butler Ave., Detroit 11. Mich. Schurtz, D. D.,* Sharp-Schurtz Co., Lancaster, Ohio Sciivartz. Peilro. Laprida 2083-2do. F.. Buenos Aires. Argen tina Schwab. Leon B., 214 E. Home St., Vandalia, Mo. Scinvaibe. F. G..'T 1306 Craigwood Rd.. Toledo 12. Ohio Schwartz. Bernard.' 96 Dud St.. Watertown 72. Mass. Schwartz. Harold A.. Sr. 2028 Horace Ave.. Abington. Pa. Schwartz. M. A..' W.C.R.R.L.. Flight Research Lab.-- W.A.D.C.. Wright-Patterson AFB. Ohio Sclnvarizwalder. Kar:.*T A C Spark Plug Div.. General Motors Corn.. Flint 2. Mich. Schwarz, E. A., Crunden Martin Mfg. Co., 760 5. Second St., St. Louis 2. Mo. Schweickhardt, William K, 176 W. Adams St., Chicago 3. I1L Schweig, Bruno F., 20 Muswell Ave., London N. 10, England Schweitzer, Howard V., Schweitzer Equipment Co., 3764 Ridge Rd., Cleveland 9, Ohio Scott. J. W.. 7640. Western Electric Co.. Inc.. Hawthorne Sta., Chicago 23. III. Scott, M. R.,f Bausch 4 Lomb Optica! Co., Rochester 2. N. Y. Scott. Rohert M.T (Si. General Delivery Area B. Wright Pat terson Air Force Ease. W.A.D.C., Dayton. Ohio Scott. Roger F..T 911 E. Main St.. Miilville. N. J. Scott. W. J., R. R. 12, Box 334 D. Franklin Rd.. Indianapolis 44, Ind. Scott. William D. (Si. 7707 Water St.. Olmsted Falls. Ohio Seabright, Clarence A, 2201 Wascana Ave.. Lakewood 7. Ohio Seabright. Edward C., 171 Beuland, Mt. Clemens, Mich. Seader. Edward. Bucks County Pottery, Kiutnersviile. Pa. Seanor. J. G.. 2300 W. Tuscarawas St.. Canton 8, Ohio Seanor. John G.. 73 Iroquois Dr.. Pittsburgh 23. Pa. Searle. A. B.. 62. Moorciiffe. Skircoai Moor Rd.. Haiiiax. York. England Searson. Leslie. James Oakes fit Co. (biddings. Ltd.) Jacksdale, Notts. England Seaton. Max Y..* Westvaco Chemical Div., Food Machinery fit Chemical Corp., 403 Lexington Ave., New York 17, N. Y. Seckntan. Harry D..' 482 W. Main St.. Peru. Ind. Sedalia, B. M. (S), Ceramic Dept.. Missouri School of Mines, Rolla, Mo. Sedenka. Anthony, 1086 Magnolia Dr.. Colonial Heights, Washington, Pa. Sedenka. Oidry. 1047 Magnolia _Dr.. Washington. Pa. Seeley. Clarence E. (S). -5 S. fifth St.. Indiana. Pa. Seeley, E. L., 1012 Neptune Ave., Chester, W. Va. Seemann. Wilhelm. Pipersgatan 3. Stockholm, Sweden Segeler, C. G., American Gas Assn.. 420 Lexington Ave., New York 17, N. Y. Seitz. Wolfram. Glass Containers Inc.. 3601 Santa Fe Ave.. I.os Angeles 58. Calif. Seiewach. Lawrence. 142 McCauley Ave.. Elmira, N. Y. Sellers. John T..' 109 Church 5t.. Jackson. Ohio Seising, Jorgen, Porcelainfabriken Norden A/S, 93 Vaiby Langgade, Copenhagen Vaiby, Denmark Semmelman, John 0.,T Dentists Supply Co. of New York. College fit Grantley Ave, York, Pa. Semple, William A.. Chemicals Div.. Aluminum Co. of Can ada. Ltd.. 1700 Sun Life Bldg., Montreal, Que.. Canada Sen. N. C. m/s Bengal Electric Lamp Works, Ltd.. 126 Mollapara Rd.. Jadavpur 24, Parganas, India Senters. Walter. 1241 Oneida St.. Denver. Col. Sephton. H. J., Dominion Glass Co., Ltd., Chappie St., Hamil ton, Ont., Canada Setchel, H. Merritt, 105 Tenth St., Streator, 111. Severin. Harold (S), Box J-3. Alfred. N. Y. Seversike. Carroll L.. 84 Sutherland Rd.. Apt. 10. Brighton. Mass. Seymour Samuel L.t Box 83. R. R. 1, Reed St., New Kensing ton. Pa. Shaffer, EL r.. Ohio Power Co., Newark. Ohio Shaffer, Paul C., 85 Chapel St.. Seneca Falls. N. Y. Shah. Chunilal P,, Bombay Potteries fit Tiles. Ltd., United India Bldg., Sir Pherozshaw Mehta Rd., Fort Bombay, India Shand. Errol B., 155 Reynolds Ave., Corning, N. Y. Shands. Everett H.. George D. Roper Corp., Blackhawk Park Ave.. Rockford, 111. 439 Shank, Jacob R., Engineering Experiment Sta., Ohio State University, Columbus 10, Ohio Shanks, Douglas, Shanks & Co., Ltd., Victorian Pottery, Barrhead. Near Glasgow. Scotland Shannon, Harrv F.. 241J, 525 Wnt. Penn Place Blcg., Pittsburgh 30, Pa. Shanok. Victor, 407 Douglass St., Brooklyn, N. \. Shapiro. Howard* i S >. Baker Hail, University oi Wash.. Seattle 5. Wash: Shapland. James T. (S3, 511 S. Lynn St.. Champaign. 111. Shardlow, L. Russel. RCA Victor Div., Radio Corp. of America, Harrison. N. J. Sharp. Dohaid E.,* Libbev-Owens-Ford Glass Co.. 1701 E. Broadway, E. Toledo 5, Ohio Sharp, Everett \V..T 62 N\ High St.. Jackson, Ohio Shartsis. Leo, 4514 W. Virginia Ave, Bethesda 14, Md. Shaug, Frank E, Pacific Div., Bendix Aviation Corp., 11600 Sherman Way. N. Hollywood. Calif. Shaver, Richard C., 318 Milbum Dr., Syracuse 7, N. Y. Shaver, W. W, 130 E. Fourth St., Coming, N. Y. Shaw, Anthony E., National Fireproofing Corp., 327 Fifth Ave, Pittsburgh 22. Pa. Shaw, Clarence F..* 2240 N. Manning St, Burbank, Calif. Shaw, L. I..T Club DelMar. Santa Monica, Calif. Shaw, M. C,** Dept, of Ceramics, Rutgers University, New Brunswick. N. J. Shaw. Ronald H, L. E. Shaw, Ltd, 74 Bedford Row, Halifax, N. S, Canada Siiavna. Michaei (J), 506 S. Railway St, Swift Current, Sask, Canada Shearer, Walter L, 15 Muirhead Ave, Trenton 3. X. J. Shearer. Wayne 3. (J), 103 S. East St, Spring Grove. Pa. Snearouse. Lee A, 326 Highland Ave., Wadsworth. Ohio Sheehan, Robert W. (5), Ceramic Supply Co, Crooksviile. Ohio Sheerer. Mar.- G,,* 6540 Hamilton Ave, College Hill, Cincin nati. Ohio Sheets. Herbert D. (J), 41 Marlowe Ave, Blasdell. X. Y. Sheldon. Richard S,, 4224 Le Fevre Dr, Dayton 9. Ohio Shell, Haskiei R, Electrotechnical Lab, U. S. Bureau of Mines, Norris, Tenn. Sheiley, C. 3,* General Refractories Co, 3201 Fruitland Rd, Los Angeles 11, Calif. Sheitcn, G. R,* 6614 Deineid St, Chevy Chase 12. Md. Shelton. Phiio (S), 130 Burr St, Fairfield, Conn. Shenango Pottery Co, New Castle. Pa. Shepard, Anna O, 751 11th St, Bouider, Col. Shepherd, John F,* Shepherd Chemical Co, Norwood. Cin cinnati 12. Ohio Sherk. Dcnald. 12115 Harvard Dr, Pittsburgh 35. Pa. Sherrill. Ernest. Westwood Ceramics Supply Co, 11250 W. Pico 3!vd, Los Angeles 64. Calif. Sherrill. Robert R, 423 Canyon Dr, Glendale 6. Caiif. Sherwir, Ronaid W,, K. R. Johnson, Ltd, Tunstall, Stanford. England Sherwood. Robert F,** 33 Summit Rd, Port Washington. Long Island. X. Y. Shevlin. Thomas S,* Engr. Expt. Sta., Ohio State University, Columbus 10. Ohio Shimada. Hachiro, Xo. 2367, 1-Chome, Sanno, Ota-ku, Tokyo. Japan Shimada. Kuro, Shimada Glass K. K, No. 47 Shimo-3-Chome, Ebie. r ukushima-Ku, Osaka, Japan Shimer. J. 3, 2125 Elgin Rd, Columbus 12. Ohio Shiftman. Norman C, 2348 Ventura Dr, R. R. 4, Walled Lake. Mich. Shipley, R. A, National Fireproofing Corp, 327 Fifth Ave, Pittsburgh 22. Pa. Shively, R. R,* Box 519, Washington. Pa. Shively. Robert R,, Jr, Mathieson Chemical Corp, 1106 Liberty Life Bldg, Charlotte 2. X. C. Shoemaker. George, Arketex Ceramic Corp, 6 X. Walnut St, Brazil. Ind. Shoffner. James E, Jr, Box 139, lone. Calif. Shonkwiier. Francis P.,' 10436 S. Hamlin Ave, Chicago 43. 111. Shook, Thurston W, British Ceramic Service Co, Ltd, Bricesco House, Park Ave, Welstanton, Stoke-on-Trent. England Shook. Wiliiam 3. (S'). 3274Vj X. High St, Coiumbus 2, Ohio Shoot. Lyle E. (S'). 60 Elm Ave, Takoma Park. Md. Shopher. Sterling D. (J). 416 W. Jackson. Mexico. Mo. Short. Albert P, Charles Taylor Sons Co, 401 X. Broad St, Philadelphia 8. Pa. Short. Allan M, Box 1234-3. Dhahran. Saudi Arabia Short, O. A, Electrochemical Dept, E. I. du Pont de Ne mours & Co, Ltd, Perth Ambov. X. J. Shorter. A. J, 3onnvbridge Silica & Fireclay Co, Ltd, Bonnybridge. Stirling, Scotland 440 Shulze, Charles E.r (S), 309 E. Sixth St, Rolla, Mo. Shuman. Albert, Box 417, Mt. Kisco, X. Y. Shun:. Robert F,, 258 W. Basic Rd, Henderson. Xev. Shute, Robert L, 125 X. 21st St, Newark, Ohio Siefert, August C,, Owens-Corning Fiberglas Corp, Newark. Ohio ___ Siegrist. Paul F, Erie Resistor Corp, 644 W. 12th St, Erie. ?a. Siegwald. Clyde R,T Park Way R. R. 2. East Liverpool. Ohio Sievert. Guiiio E, 2645 Hollister Terrace, Glendale 6. Calif. Signorella, Joseph E, 1812 Kenneth Ave, New Kensington. Pa. Sigwart, Harry J, 732 Beechursi Ave, Morgantown, W. Va. Siiberstein. Leopold. Ben: Glass Works, Inc, 82-25 126th 5t, Richmond Hill. 18. L. I, X. Y. Silk, Karl. Messrs. Jury Holloware Ltd, Brierley Hill. Stans. England Silva. Alfonso. Refractories "Lota Green" S. A., Casilla 145 V. Valparaiso. Chile Silverman. Alexander,** 1514 Denniston Ave., Pittsburgh 17, Pa. Silverman. William B,** Owens-Illinois Glass Co, 1700 Westwood Ave, Toledo 1, Ohio Simavilla, Juan M, c/o Cristalerias Rigolleau, S. A, Berara- tegui. F. C. S, Buenos Aires. Argentina Simcock, H. J, "Cranford," Lovatt Ave, Milehouse, New castle, Stafford, England Simison, .A L,* Owens-Corning Fiberglas Corp, Toledo. Ohio Sirr.ko. Frank A, Jr. (S), Battelle Memorial Institute. 505 King Ave, Columbus, Ohio Simmen. Fred G. (J). 964 Terrace Blvd, Trenton 8, X. J. Simmingskold. Bo, Glasinstitutet i Vaxjo, Sandgardsgctan 5. Vaxjo, Sweden Simmons. E. E, Jr, 453 S. Oakland Ave, Pasadena 5, Calif. Simmons. Milton L, Ferro Corp, International Div, 4150 E. 3oth St, Cleveland 5. Ohio Simmons. Thomas Short (S), Box 5247, Georgia Tech, Atlanta, Ga. Simon. A. G, 3650 rairesta. I.aCrcscenta. Calif. Simonds Worden White Co. (F. R. Henry), X. Summit St. i Negiey Place, Dayton 7, Ohio Simonis, Paul. Adminisirateur-delegue, Societe Beige de Ceramioue "Cerabel." 2. rue de la Regence, Bruxelles. Belgium Simons, l. Mitchell, Jr, 9186 E. Jaylee Dr, Temple City. Caiif. Simonser, Eduardo C, Companhia Paulista de Mir.eracao. S/A, Caixa Postal 3008. Sao Paulo. Brazil Simon.-en. Victor G, Ceramica Sao Caetano S. A, Caixa Postal 273. Sao Paulo. Brazil Simpson. Alexander' (J), 401 Charles St, Turtle Creek. Pa. Simpson. Harold E..** New York State College of Ceramics. Alfred, X. Y. Simpson. James E. (S), 18 College Ave, New Brunswick. N.J. . . ,, Simpson, Thomas ?, Soconv-Vacuum Oil Co, Inc, Research 4: Development Dept, Paulsboro. N. J. Sinclair. Robert R, 510 S. Osage Ave, Inglewood. Calif. Singer, Felix,* Keramos House, 46, Castlemaine Ave, S. Croydon, Surrey, England Singmaster, James A, 420 Lexington Ave, New York 17, X. Y. Sirovy, George. Century Vitreous Enamel Co, 6641 S. Narra- gansett Ave.. Chicago 38, 111. Siska. Albert H.* (J), 1141 Lindsey Ave, Miarr.isburg, Ohio Sissons. Gordon H, 320 First St, Medicine Hat, Alta.. Canada Sixt, Lawrence F,, Box 3, Wellsville, Ohio Sjogren. John K.. Manufacturing Control Dept, Norton Co, Worcester. Mass. Skeily, David C. (J). 904 Vermont Ave.. Pittsburgh 34. Pa. Skelly. John C (J), Heathwood Court Apartments, Apt. H-5. Columbia. S. C Skeoch, Walter K,, 320 S. Mission Rd, Los Angeles 33, Caiif. Skinner. Kenneth G,T Box 214. Norris, Tenn. Skinner. Roger D,, 600 Montour St, Montoursville. Pa. Skurcenski. Anton, H. I. Thompson Co, 1733 Cordova St, Los Angeles 7. Calif. Slayter. Games.* Owens-Coming Fiberglas Corp, Newark. Ohio Slick. E. E, Jr, Haws Refractories Co, 407 Main St, Johns town. Pa. SIuss, Olen R,, 715 S. Chapel St, Louisville. Ohio Slyh. John A,* 3a:telle Memorial Institute, 505 King Ave, Columbus, Ohio Small. Carlton F, Jr. (S), 602 Noble St, Norristown. Pa. Smalley. Howard r Research Div, Pemco Corp, 2554 Greer.mount Ave, Baltimore 13. Md. Smart. Frank H,, 24 Frederick St, Montclair, X. J. Smiiev. William D, Stanford Research Institute, Stanford. Calif. Smith 5c Stone, Ltd. (W. 3. Ford), Georgetown, Ont, Canada Ceramic Bulletin Smith, Adrian F., 83 E. Third Sc., Corning, X. Y. Smith. AMen J,, 524 W. Findlay 5t.. Carey, Ohio Smith, Alfred \V,, 156 Clay St., Denver 19, Col. Smith, A. O., Corp. (\V. A. Deringer), 3533 X. 27th St., Mil waukee, Wis. Smith, Arnold N,, T & R Boote, Ltd., Burslem, Stafford. England Smith, C. A..' Mexico Refractories Co.. Mexico, Mo. Smith, Dudley C., Main S: Chestnut. Vineland. X. J. Smith. Earl R, Research Labs., Pittsburgh Plate Glass Co, Creighton, Pa. Smith. Ellis J. (SI, 205 Terrace Rd.. Des Moines 12, Iowa Smith. F. Goodwin. Hartford-Empire Co. Div., Emhart Mfg. Co.. Box 1620, Hartford 2, Conn. Smith, G. Frederick, Chemistry Dept., University of Illinois. Urbana, 111. Smith, G. Sherwood fS). R. R. 4, Jefferson. Iowa Smith, Gail P., Box 202, R. R. 1. Corning, X. Y. Smith, H. Russell. Box 757. East Liverpool. Ohio Smith. Harlan D.. Wellsville Fire Brick Co.. Wellsville. Mo. Smith, Harry \V\. 9825 Eastbrook Dr.. Overland 14, Mo. Smith, Herbert A., Palm, Fechteler & Co., Box 750, East Liverpool, Ohio Smith. Hillard A..* 159 Chestnut Ave.. Metuchen. X. J. Smith, J. Ernest, 1317 Putnam Ave., Plainfield, X. J. Smith. J. Taibot. 44 Lookover Lane. Yardley. Pa. Smith, James. L'nited Fireclay Products. Ltd., Bathviile Office. Armadale. West Lothian, Scotland Smith. James X.. Jr.. "Arborlaen." R. R. 3. New Bern, X'. C. Smith. John J., 1107 Highland St.. Tarentum, Pa. Smith, Karl W. S., Charles Taylor Sons Co., Cincinnati 14, Ohio Smith, Kenneth E,*t 4717 W. 16th St., Indianapolis 44, Ind. Smith. Leland. Box 52, Holly Springs, Miss. Smith, Peter Williamson. 20 Park Ave.. Flemington, X. J. Smith. Ralph O., 30 Chestnut St., Salem, X. J. Smith. Richard D., 2099 Abbington. Xewman Hall. Cleveland. Ohio Smith. Richard E.. 114 Pleasant St.. Manchester. Mass. Smith, Richard M.. 110 Sly Ave.. Coming, X. Y. Smith. Robert K, 149 Reynolds Ave.. Coming. X. Y. Smith, Rowland D., 12 Woodlawn Ave., Corning, NT. Y. Smith. Rufus J.. Jr.. 306 S. Jefferson St.. Goldsboro, X. C. Smith. T. Sydney i SL Brighf.voori. Va. Smith. Wiiiiam L., Harris Clav Co.. Spruce Pine. X. C. Smock, Alden W,, 41 Euclid Ave.. Columbus 1. Ohio Smoke. Edward J.. 11 Edgewood Rd.. Metuchen. X. J. Smoot. Jack M.,f Chatnblee. Ga. Smothers, W. J., Box 64. University Sta., Fayetteville, Ark. Smyly. James P. (S). 1924 Ashland Ave.. Charlotte. X. C. Smyth, Harold T,, Xew Jersey Ceramic Research Sta., Rut gers University. Xew Brunswick. X. J. Snow. L. James. Mifffinviile. Px Snow. Roland B., Research Lab.. United States Steel Corp., Kearny. X. J. Snyder, Ernest B.J Wheeling Steel Corp.. Steubenville S. Plant. Steubenville, Ohio Societa Italiana Refrattari Margbera Azionaria (Domenico Giacomelli), Via Industrie 52, Casella Postale 38, Marghera. Italy Societe Ceramique (Comte L. de Meeus d'Argenteuil), Hoge Barakkenstraat 6. Maastricht Netherlands Societe Francaise De Ceramique (Y. Letort). 44 Rue Copernic. Paris 16, France Society of Glass Technology, R. W. Douglas, Elmneid. Xorthumbcr'.and Rd., Sheffield 10. England Soconv-Yacnum Oil Co. (W. B. Stevens), 26 Broadway, Xew York 4. X. Y. Soderstrom. Hakan, A. Ahlstrnm Oy.. Iittala Bruk, Iittala. Finland Soderstrum. William K. (S), 1260 Chipeta Ave., Grand Junc tion, Col. Solomon. Earl A_,t R. R. 2. Orchard Park, X. Y. Solvay Process Div., Allied Chemical Ic Dye Corp, Librarian, Syracuse 1. X. Y. Somers, A. J, Borax Consolidated, Ltd, Regis House, King William St., London E. C. 4. England Somerville. Thomas III. Washington 3rick Co, Sixth <5c Decatur Sts. X. .. Washington 11. D. C. Sommers. R. H, Hevi-Duty Electric Co, 4212 W. Highland Blvd, Milwaukee. Wis. Sommerviile. J. L,,t 47 S. Second Ave, Clarion, Pa. , Sondles. Merrill C, Paden City Pottery Co, Paden City, W. Va. i Sonenshine. Lewis /S), Box 1-9, Alfred. X. Y. ( Sontz, Arthur,' 8054 S. Crandon Ave, Chicago 17, 111. i/ Sosman, Robert B.*t (Honorary), School of Ceramics, Rutgers V University, New Brunswick, N. J. C VOL. 31. No. 10 (1952) South. Furman. Jr, Lava Crucible-Refractories Co, Wabash Bldg, Pittsburgh 22. Pa. Southern Potteries, Inc. (H. W. Kibler), Box 279, Erwin, Tenn. Sovereign Potters, Ltd. (R. V. Miller), Hamilton, Or.t, Canada Sowman, Harold G, 1430 Grand Blvd, Schenectady, X. Y. Soxman. c.dwin J.T (S), Box 117, Alfred X. Y. Spanger.berg, Wiiiiam C. (S), Box FF, Alfred. X. Y. Sparks, Edgar W, 406 Unaka Way, Erwin. Tenn. Sparrow. Paul F,, 610 Shady Dr. E, Pittsburgh 16, Pa. Soeil, Sidney," Johns-Manviile Co, Research Lab, Manvilie. X. J. Spence. C. F, 1004 Grandon Ave, Columbus 9, Ohio Spence. Harold I, Klabin Irmaos & Cia, Av. Suburbana, 5472. Meier. Rio `de Janeiro. Brazil Spencer. Ciiarics D,* Lamp Development Lab, Lamp Dept.. General Electric Co, Neia Park. Cleveland 12. Ohio Spencer, Howard G, 111,7 232 X. Main St, Suffolk, Va. Spencer-Strong. G. H.*t 109 Witherspoon Rd, Baltimore, Md. Spengler, H. H,, Glass Technology Lab, General Electric Co, 1133 E. 152nd St, Cleveland, Ohio Spero. C. A, Jr, 134 Gibbs Ave, Newport. R. l._ Sperring, Richard F. (S). U.S.S. Cacapon (AO-52), c/o Fleet Post Office. San Francisco. Calif. Spiegel. Robert A. (S), 1 Bolivar Ave, Troy. X. Y. Spinks, H. C,, Clay Co, Inc. (R. B. Carothers), Box 829, Paris, Tenn. Spires, Lowell Albert. Gibson Refrigerator Co, 515 W. Williams St, Greenviile. Mich. Spires, Stephen T,f North American Refractories Co, Mt. Union, Pa. Spoerry. Kerry, J. Schmidheiny & Co, Ltd, Keerbrugg. (St.G.). Switzerland Snriggs. Richard M. (S). 35 Murtland Ave, Washington, Pa. Spring, George E. (S), Box 3517, Georgia Tech, Atlanta, Ga. Sproa:. Ira E.."' R. T. Vanderbilt Co, Park Ave., Xew York 17. X. Y. Spurck, Richard F, General Electric Co, I & T Tube Dep:, 1 River Rd.. Schenectady, X. Y. Square D Company (Ralph E. Hanna), Molded Insulation Div, Peru, Ind. Staatliche Porzellan-Mannfaktur Berlin (C-erhard Muller) (13a> Selb/Oberir, Hartmannstrasse 1-3, U. S. Zone. Ger many Staats, Henry X.. 5900 Northwest Highway, Chicago 31, III. Stach. Otto R, Carborundum Co, Box 258. Perth Amboy, X. J. Stadler. Leo E, 1057 Plymouth St, Windsor. Conn. Stafficker. Charles F,, 506 Grandview Ave, Vineland. X. J. Stafford. W. L..** Johns-Manviile Research Center, Box 159, Manvilie. X. J. Stanir.ann. John A, 4275 Verdugo. Rd, Los Angeles 65. Caiit. Stalego. Charies J, 227 X. Fifth St, Newark, Ohio _ Standard Brick & Tile Corp. (Clifford A. Kleymeyer), Evans ville 19. Ind. Standard Ultramarine Co. (L. F. May), Huntington 18, W. Va. Stangl Pottery (J. M. Stangl), Trenton 4, X. J. Stangl. J. M,, Stangl Pottery, Trenton 4, X. J. Stanislaw, T. Stanley, Box 354, Centerport, L. I, X. Y. Stansneld. J. R. D, Streator Brick Co, Streator. III. Stanworth. John E, 74 Ashlawn Rd, Rugby, Warwick, England Stapieton. Robert E. (S), Box 551. Alfred. X. Y. Star Porcelain Co. (H. Collin Minton, Jr.), Muirhead Ave, Trenton 9, X. J. Stark Ceramics, Inc. (J. H. Stewart), Box 230, Canton, Ohio Starkey. Daryle D, R. R. 1, Willard, Ohio Starkey. Eimer (SI, 4720 Bayard St.. Pittsburgh 13. Pa. Stathis. Andrew W. (S), c/o John Douglas Co, Cincinnati 16. Ohio Staudt. August. 264 Water St, Perth Amboy, X. J. Stauffer Chemical Co, 420 Lexington Ave, Xew York 17, X. Y. Stauffer. Kenneth K. B,, 49 X. Water St, Spring Grove, Pa. Stavrolakis. J. A, 10108 S. Calhoun Ave, Chicago 17, I1L Steck. C. O, One 2Sth St.. Pittsburgh, Pa. Steele, G. Allen, 546 Cedarhurst Ave, Dayton 7, Ohio Steele. Harry L, Shorter & Son, Ltd, Copeland St, Stoke- on-Trent. England Steele. Howard E, Westinghouse Electric Corp, Box 1312, Fairmont. W. Va. Steele. Hoyt P,, Benjamin Electric Mfg. Co, Des Plaines, III. Steele, J. C,, Jc Sons (J. C. Steele. Jr.), Statesville, X. C. Steeie, J. C, Jr, J. C. Steele & Sons. Statesville, X. C. Steele, William Perrin, Pine Hall Brick and Pipe Co, Winston- Salem. X. C. Steffen. .Don D.t (J). 628 Montana. Lovell. Wyo. Steff. Donald J_ 209 Franklin Ave, Kittanning, Pa. 441 Steil, Huy U.. 3450 Garfield St.. Denver 5, Col. Stein, Colonel Alan. Millneld. Polmont. Stirling, Scotland Stein, Colin H., 7 Melville Terrace, Stirling, Scotland Stein. Ronald C., Messrs. John G. Stein & Co., Ltd.. Bonny- bridge. Scotland Steinbock, . A., Whip-Mix Corp., 411 W. Avery it., Louis ville 8, Ky. Steiner, Harry C.. Electronic Tube Engineering Div.. General Electric Co., Schenectady 5, N. Y. Steinhoif. Fred L..,T Brick .`r Clay Rccord-Ccramic Industry. 5 S. Wabash. Chicago 3. III. Stelle. John A., Arketex Ceramic Corp., Brazil, Ind. Stent, Howard B., Box 1537, Nairobi, Kenya Colony, East Africa Stephenson. 'Samuel R., Jr. (S), 2655 Momevallo Rd., Birming ham, Ala. Sterling China Co. (William T. Pomeroy), East Liverpool, Ohio Sterling Grinding Wheel Div., Cleveland Quarries Co., (A. E. Tulk), Timn, Ohio Stern. George. American Electro Metal Corp.. 320 Yonkers Ave.. Yonkers 2. N. Y. Sterry. William M. (S). 39-J4 University Way. Seattle i. Wash. Stetson, Alvin R.. Research Div., Solar Aircraft Co.. 22C0 Pacific Highway, San Diego 12. Calif. Stetson, Harold W. (S), Div. of Ceramics. Pennsylvania State College. State College. Pa. Stettinius. K. E.. Lapp Insulator Co., Inc.. LeRoy. N. Y. Stettner, Donald H..T 606 Elkins Ave.. Philadelphia 20. Pa. Steubenville Pottery Co. (W. J. Mould), Steubenville. Ohio Steuernagle, J. H., Brockway Glass Co., Inc., 1047 Seventh Ave.. Brockwav, Pa. Stevens. Major Donald K,, Research 4 Analysis Dept., The Arty. School, Box 227 (AA4GM Be) Fort Bliss. Texas Stevens, Frank JTM? 414 Prospect St., Nutley 10. N. J. Stevens, Joe. Murray Refractories Co., Box 338. Murray, Utah Stevens, L. M.. 2907 Alabama St., La Crescenta, Calii. Stevens, Robert P,t Wellsviile Fire Brick Co., 1625 W. I04th Place, Chicago 43, III. Stevens, W. B,, Socony-Vacuum Oil Co., 26 Broadway, New York 4, N. Y. Stevenson, James K., Jr.A R. R. 1, Mundelein. III. Stevenson, Samuel. 1967 Grafton Rd.. Elyria. Ohio Steventon. Horace. John Steventon 4 Sons, Ltd., Ciedford Works, Middlewich, Cheshire. England Stewart, Alex, National Lead Co., Ill 3roadwav, New York 6, N. Y. Stewart, J. G.. Braun Corp., 2260 E. 15th St., Los Angeles 21. Calif. Stewart, J. H., Stark Ceramics, Inc.. Box 230. Canton. Ohio Stewart, John A.. 419 Locust Ave., Washington. Pa. Stewart. Malcolm, 310 Irwin St., San Francisco 7, Calif. Stief. W. C.. 158 5. Wilson Blvd., Mt. Clemens. Mich. Stillwater Clay Products Co. (J. P. Duffy), Lock Drawer 32. Uhrichsville, Ohio Stockdale, George F., 204 Ceramics 31dg., University of Illinois, Urbana, III. Stockslager. Theodore F.. Carborundum Co., 24800 Lakeland Blvd.. Cleveland 23. Ohio Stockstrom. Arthur. Magic Chef, Inc.. 1641 S. Kingshighway, St. Louis 10. Mo. Stoddard. Stephen D..f 412,21st St., Golden. Col. Stoen, Roger C-.LCannelton Sewer Pipe Co.. Cannelton. Ind. Stoffer. Ross. American Clay Forming Co.. Tiffin, Ohio Stohl. Alfred A.. North StTM Sun Prairie. Wis. Stohl. L. A.. Wisconsin Porcelain Co.. Sun Prairie. Wis. Stolte. Norman H.,t 3974 Orchard RdTM Cleveland Heights 21, Ohio Stone. Benjamin. California- Crafts. 143 N. Rose St., Mt Clemens. Mich. Stone, Conrad A., 93 S. Remington Rd., Bexley, Columbus 9, Ohio Stone. C. P., Ferramic Industries. Ltd., Hydeway, Welwyn Garden City, Herts, England Stone, F. R., Canada Firebrick Co., Ltd., 4741 St. Ambroise St, Montreal. Que., Canada Stone, Robert ]., John W. Higman Co., 24 Sate St, New York 4, N. Y. Stone, Robert L..** Dept, of Ceramic Engr., University of Texas, Austin 12, Texas Stone. S. A.. Deister Concentrator Co.. 901 Glasgow Ave., Fort Wayne. Ind. Stong. Guy .. 926 W. Water St.. Elmira. N. Y. Stookey Star.iey D.. 145 Pritchard Ave., Coming. N. Y. Stoops, Robert F..f 1420 Hamilton Rd.. Pittsburgh 34. Pa. Stotlcr, Chalmer P, 223 Winter St, Crooksville, Ohio 442 Stott, A. E.,- Edward Johns & Co., Ltd., Armitage, Rugeiey, Stafford, England Stout, Byrl M-, 32 Ransome St., Port Allegany, Pa. Stout Lester L.. The Ohio Sate University Research Founda tion. 310 Administration Bldg., Coiumbus 10. Ohio Stradley, James G. (S), R. R. 1. Newark, Ohio Stradley. Norman H..r 367 Grove St, Minnesota Mining & Mfg. Co., St. Paul, Minn. Straight, Lee H., Iowa Clay Products Co., Centerville. Iowa Strain. R. E.. Alliance Ware. Ltd.. Box 550. Vancouver. 3. C.. Canada Stratton, Mrs. W. B., Pewabic Pottery, 10125 Jefferson Ave.. Detroit 14, Mich. Strauss. Simon W.. 3801 Connecticut Ave. N. W.f Apt. 247. Washington. D. C. Streator Brick Co. (J. R. D. Stansfield), Streator. 111. Stringfellow, Allen E.. 202-C Garfield Ave.. Collingswood 7, N. J. Strod, Arvid J.. Vitro Mfg. Co., Corliss Sta., Pittsburgh 4, Pa. Strong. Kenneth B., 4101 Hillsboro Circle. Nashville 12, Term. Stroud, Harold L., 2909 Bembridge Rd., Royal Oak^ Mich. Stroup, Philip T., Aluminum Co. of America, Box 772, New Kensington, Pa. Stroupe, Howard E., Jr.,t Wheeling Tile Co., Wheeling, W. Va_ Structural Clay Products Institute (Harry C. Plummer), 1520 18th St. N.W., Washington 6. D. C. Struebing, Haroid J., 1215 Military Rd.. Buffalo 17. N. Y. Stuart, Deraid A.. Cornell University. Dept, of Engr. Mat., Ithaca, X. Y. Stubbs. John M. (S). 285 Kensington Place. Marion. Ohio Stuckey, Jasper L., University of North Carolina, Raleigh, N. C. Stuntz, Robert P., Babcock 4 Wilcox Co., 105 S. LaSalle, Chicago 3, III. Stupakoff Ceramic Sc Mfg. Co. (Semon H. Stupakoff), La- trobe, Pa. Stupakoff, Semon H., Stupakoff Ceramic 4 Mfg. Co., Latrobe, Pa. Stutz, George F. A.. New Jersev Zinc Co.. Librarv, Palmerton, Pa. Stver, Charles A., II Roxburv Rd., Forest Hills. Pittsburgh . 21 PaStyhr. Karsten H., Jr. fSi. 34 Highview Ct.. Huntington. X Y. Sullivan, Eugene C..* Corning Glass Works, Corning, N. V. Sullivan. John D.,* Batteiie Memorial Institute, 505 King Ave., Columbus 1. Ohio Suilivan. Joseph C.. 24 Fuiton St.. Corning N. Y. Suilivan. Paul A.' (J). 263 Grand Ave.. Rochester 9. X. \\ Stlmerbank (Buient Buktas), Ankara, Turkey Summers, E. W.. Owens-Illinois Glass Co., General Engineer ing Dept., Alton. III. Sumpter. Charles E.. 6820 Magoun Ave., Hammond. Ind. Sumrell, Ferrall N., 707 Henrv St., Unionaale, Hempstead. N. Y. Sur Enamel 4 Stamping Works, Ltd. (M. M. Sur), 9 Middle RdTM Entaily, Calcutta, India Sur. M. MTM Sur Enamel 4 Stamping Works. LtdTM 9 Middle Rd. Entaily, Calcutta, India Suraiva, Valjee < S). Box 1019. Alfred. N. Y. Surface Combustion Corp. (Harvey C. Weller), 2375 Dorr StTM Toledo 1, Ohio Surfleet, Harold, Kaylene Labs., Waterloo RdTM London NAV. 2. England Sutherland. Clark, Pacific Clay Products, 306 West Ave. 26. Los Angeles 31, Calif. Sutherland. Frank R..t R. R. 6. Box 3I6-A. Kokomo. Ind. Surphen. F. G.. 2505 Central Ave.. Middletown. Ohio Sutton. Willard H. (S), Box G-l. Alfred. N. Y. Sutton. W. J., Savoy-Homann Hotel, Bandoeng. Java. Indo nesia Svec, J. J..f 3440 S. Euclid Ave., Berwyn, 111. Swain. Stephen M.,** 3403 Spangler Rd., Cleveland Heights 12, Ohio Swalm, Phaon H., Box 178, Kingston, OntTM Canada Swan, S. D., Dentists' Supply Co., York, Pa. Swank, C. Ferguson, 1105 Fidelity Bldg., Cleveland 14, Ohio- Swanson. William H.. 224 E. Vineland RdTM Augusta. Ga. Swart. Robert (S), Box CC, Alfred. N. Y. Swearingen. Jack C., United Can 4 Glass Co.. 131 B St.. Hayward. Caiif. Sweely, B. T..*T Gate 12. Crystal Lake, III. Sweitzer, Mark, 320 N. Euclid, Pasadena 4, Calif. Swenson. George W_ Minnesota Mining 4 Mig. Co., 900 Fauquier Ave., St Paul 6, Minn. Swentzel, John ?.. 8960 Hennepin Ave., Niagara Falls, N. Y. Sweo. Benjamin J.,* Ferro Corp., 4150 E. 56th St., Cleveland 5. Ohio Ceramic Bulletin iwicker, Victor C,* Alexander H. Kerr 4 Co., 3440 Wilshire Blvd, Suite S12, Los Angeles, Calif. Swift, Howard R, Libbey-Owens-Ford Glass Co.. 1701 E Broadway, Toledo 3, Ohio Swindell Brothers, Bayard 4 Russell Sts., Baltimore, Md. Swindell-Dressler Corp. (Philip Dressier), Box 1888, Pitts burgh 30, Pa. Swinnerton, Bertram B, 21 Second Ave., Tiffin, Ohio Swinnerton, George R., 35 E. State St., Alliance. Ohio Sylvania Electric Prodocts, Inc. (B. S. Elletson), 2iW-2n Willets Point Blvd.. Bavsidc. Long Uland. X. V. Sylvester, George R.,T Sylvester & Co., 611 Terminal Tower, Cleveland 13, Ohio Szymaszek, Jan W,. 121 Muir Ave., Niagara Falls. Ont., Canada T Taalte, Kenneth E.. 36 Locust Lane, Levittuwn. Pa, Tailby, Roland V.. 127 N\ Sixth Ave.. Highland Park, N. J. Takahashi, Kakuichiro.* Nippon Glass Co., Ltd.. 5, Ginra 7-Cliotne. Chuo-Ku. Tokyo. Japan Talbot. Herbert W,, Jr., National Lead Co., 1376 River Ave., Pittsburgh 12, Pa. Talwalkar, T. W, 8 Bagmati Rd., Jamshedpur, India Tanberg, Ragr.ar, Dramraens Glassverk, Drammen, Norway Tao, Yung (S). Box 289. Alfred. N. Y. Tamacki. Walter J, 3417-C Lochraven Blvd.. Towson 4, Md. Tarnopol. Milton S., 943 Ninth Ave., Brackenridge, Pa. Tarquino, Bruce L., 1268 Electric Ave., Lackawanna 18, N. Y. Tate, Frank E.,t 310 Tenth St, Lincoln, 111. Tatem, William A. (S), Box J-3, Alfred, N. Y. Tauber, John A,t 3150 Mayflower Rd.. Plymouth Meeting, Pa. Tayler, John B., Louisville Pottery Co,, 228 E. Bloom, Louis ville 8. Ky. Taylor. Cant. A. L. (J >. Headquarters AMC. Box 1794. Wright Field, Dayton, Ohio Taylor. Albert J. (S), 106 Placer Lane, Oak Ridge. Tenn. Taylor, B. 3rooks. Jr. (S), Box 1358. Ga. Tech.. Atlanta, Ga. Taylor. Charles D., 219 Corriner Ave.. Salisbury, X. C. Tayior, Charies H.. Jr. (S), 37 South Street. Westboro, Mass. Taylor, Fran, Gav Fad Studio. Lancaster. Ohio Taylor. Howard U, 4653 N. 30th St.. Milwaukee 9. W;\. Taylor, J. J., The Ohio Brass Co.. Barberton, Ohio Taylor, J. J.. 3342 Chapman St.. Los Angeles 41, Calif. Tayior, Louis J., Laboratory Equipment Corn., Box 352, St. Joseph._ Mich. Taylor. Nelson W,,* New Products Div., Minnesota Mining 4 Mfg. Co.. 367 Grove St, St. Paul 1. Minn. Tayior, Rcoert 8.. Structural Clay Products. Research Founda tion. 20 X. Wacker Dr.. Chicago 6. 111. Taylor. Smith 4c Taylor Co. (Charles R. Landback), Chester. W. Va. Taylor, : homas J.. Sterner Mill Rd., R. R. 3. Langhome. Pa. Taylor, William C,* Corning Glass Works, Coming, N. Y. Teague, Jo M, Jr.J Quality & Specifications Dept, Owens- Illinois Glass Co.. Box 1035-1036. Toledo. Ohio Teeter, John N,, 1260 Cavell Ave.. Highland Park. 111. Teetor. Paul." Central Commercial Co.. Northneld. I1L Tefft, Phillip W.,t 1544 Guilford Rd, Columbus. Ohio Tegellaboratoriet (Brick Laboratory). (Christer Enberg), Exp. Sta. of the Royal Swedish Academy for Engineering Science, Drottning Kristinas vag 47. Stockholm 0. Sweden Tennant C. Sons & Co, of New York, 100 Park Ave, New York 17. N. Y. Terarawa. M, The Nagoya Seitosho. 272, 5-Chome, YamadaCho. Nagova. Aichi-Prefecture. Japan Terman, Mark J, Babcock & Wilcox Co, 2730 Koppers Bldg, Pittsburgh 19, Pa. Terrill, Gerald H, 807 Lewis Ave, Jeannette. Pa. Terry, Griffin E, 602 E. Willow, Wheaton. 111. Tetrick. James D," 1102 E. Fourth St, Vinton. Iowa Thatcher Glass Mfg. Co. Inc. (Roy S. Arrandale), 1901 Grand Central Ave, Elmira. N. Y. Theobald. Erwin F, 1516 18th St. N. W, Canton 3. Ohio Theves, GuiH. 1 Rue Glesener, Luxembourg, Grand Duchy of Luxembourg, Belgium ZJ'F'y5, Ka.ri B;. S3-09 Talbot St, Kew Gardens. L. I, N. Y. Thieike, Norman R, Mineral Industries Bldg, State College, Pa. Thiemann. John W,* 2550 N. 40th St, Milwaukee. Wis. Thiemecke. Harry W,** Homer Laughlin China Co, Newell, W. Va. Thiess. L. E,* Locke Dept, General Electric Co, Box 57, Baltimore 3. Md. Charles A. G,, E. J. St J. Pearson, Ltd, Firebrick Works. Stourbridge, England Vol. 31, No. 10 (l9521 Thomas^ Charles W. (Honorary), Clifton House. Old Swinford, Stourbridge, England Thomas, David W,T Stangl Pottery, Trenton, N. J. Thomas. H. H, 1849 Edgewood Rd, Towson 4, Md. Thomas. Robert H,, 23S Arlington Rd, Newton Falls, Ohio Thomasson, Gene I. (S), 708 W. California, Urbana, 111. Thompsen. 2nd Lt. Robert S. i.S), W.A.D.C. Gen. Driivcrv. Area B. W.P.A.F.B, Dayton, Ohio Thompson. A. Paul.* Research Laboratories. The Eagie- Picher Co, Joplin, Mo. Thompson, Charies W, 216 Dell St, Johnstown. Pa. Thompson, Clyde L,*f 4922 New Plymouth Rd, Pittsburgh 27, Pa. Thompson, Franklin S,, 25 Schenck Ave, Matawan, N. J. Thompson, Frederick S, Corhart Refractories Co, Inc, 16th & Lee Sts, Louisville 10, Ky. Thompson, G. L, Borax 4 Chemicals Ltd, 229 High Holborn. London W. C. 1, England Thompson. John D, 2434 Evergreen Dr, Royal Oak, Mich. Thompson, M. W, Hall China Co, East Liverpool, Ohio Thompson, Noel M,, 721 Shady Lane, Pittsburgh 34. Pa. Thompson. Thomas E, Box 252, Williams Bay, WJs. Thomson. Homer G, 211 N. 88th 5t, Wauwatosa 13, Wis. Thomson. James K.' ij). 21 East Shore Dr, Massapequa, N. Y. Thor, Murner E,, 318 Parkhurst Blvd, Buffalo 23, N. Y. Thorlev, J. Palin, Box 1143, Jamestown Rd, Williamsburg, Va. Thomgate. Bruce W, American Clay Forming Co, E. Duncan St, Tyier. i exas Thornton, George A, Ottawa Silica Co, Box 437, Ottawa, III. Thornton. Paul E.J 4603 Lasheart Dr, La Canada, Calif. Thornton. Richard (S). Box C C. Alfred. N. Y. Thropp. Herreld D, Eureka Flint 4 Spar Co, 190 W. State St, Trenton 2. N. J. Thuener, Everett E, R. R. 6. Schenectady 3. N. Y. Thurnauer, Hans,*t 1811 Hixson Pike, Chattanooga 5. Tenn. Tibbals. Harvey 1_f 2374 Hilgard Ave, Berkeley 9, Calif. Tiede, Ralph L, S3 Myrtle Ave, R. R. 2, Newark. Ohio Tillotson. Clifford. Tillotson Refractories Co, 1150 W. Sixth St, Corona. Calif. Tillotson. E. Ward.* Mellon Institute. 4400 Fifth Ave, Pitts burgh 13. Pa. Tinklepaugh, James R,t Air Force Project. New York State College of Ceramics. Alfred, N. Y. Tipping, J, United Glass Bottle Mfgrs, Ltd, 8 Leicester St, London W. C. 2. England Titanium Alloy Mfg. Div, National Lead Co. (Arthur R. Rutkowski). Niagara Fails. N. Y. Titus. Henry 3, North American Refractories Co, 50 Church St.. New York 7, N. Y. Todd. Edwir. R, 2425 Vail Ave, Ant. 21-A. Charlotte. N. C. Todd, Henry, 17C0 Lowell Ave, Niagara Falls, Ont, Canada Toft. Cyril E, 326 Riverview St.. East Liverpool. Ohio Toler. Herbert R. Ml. R. R. 2. Box 544. West Chicago, 111. Tom. Elgin M,, 4208 Mariaine Dr, Toledo 6. Ohio Tomkins, David E, 509 Norwood Ave, New Castle, Pa. Tool. Arthur Q..* 7325 Carroll Ave, Takoma Park 12. Md. Tooley, F. V,* 1008 S. Garfield Ave, Urbana, 111. Toomey. _ James E, Kaiser Industries. 1625 Eye St, N. W,, Washington. D. C Topping, John. United States Steel Co, Pittsburgh. Pa. Torgal. K. G, 85/1. 3handar Gall:, Belgaum. Bombay State. India Tomo, Ralph F,, 369 Front St, No. I, Berea, Ohio Torok. Julius J, Westinghouse Electric Corp, Huull Rd, Fairmont. W. Va. Tostevin. Edgar R, Jr. (S). 62 E. Market St, Bethlehem. Pa. Toulouse. Juiian H, 1817 Potomac Dr, Toledo 7. Ohio Trabert. Loren A..T 1024 Dodge St, Lake Geneva. Wis. Tredennick, William T,f 2100 Walnut St, Embassey Apts, Philadelphia, Pa. Treischel. C. C..*T R. T. Vanderbilt Co, 230 Park Ave, New York 17. N. Y. Trenton Potteries Co. (James R. Beam), Plant 1. 309 N. Clin ton Ave, Box 141, Trenton, N. J. Treptow, Arnold W, Bell Telephone Labs, Murray Hill, N. J. Trevor, John F, Moira Rd, Woodville. Burton-on-Trent. England Tribe, Harold G, Electricity Meter 4 Allied Industries, Ltd, Box 4, Waterloo, Sydney. Australia Trinklein. Robert L_. 2306 E. Fifth, Anderson, Ind Tripp, Harlan P,f 90 Franklin St.. Morristown. N. J. Trostel. L. J,*' General Refractories Co, Box 1673, Baltimore 3, Md. Trostel. Louis j, Jr.f (T). 1932 N. High St, Columbus 1. Ohio Trott, R. P, General Abrasive Co, Inc, Niagara Falls, N. Y. Troy. Lt. Henry N. (Si. 02203096 S-2-65 AFABN. Div. Arty, 3d Armd Div, Fort Knox. Ky. t,- 443 Troy, Walter J, 883 Chili Ave., Rochester, N. Y. Tse. S'nou-cheng tS). 338 Thompson Ave.. East Liverpool, Ohio Tu, K_ C. (S), c/'o L. Y. Tu, Dept, of Physics, Pennsylvania State College, State College, Pa. Tucker, Donald J,, Murray Ave., Huntingdon Valley, Pa. Tucker, Edward F.. Stebbins Engineering & Mfg. Co., Water- town, N. Y. Tucker, Harvey C./ Ferro Corp., 4150 E. 56th St., Cleveland. Ohio Tucker, Roland E.. The Trenton Potteries Co, Trenton. N. J. Tufnail, Howard R,, Steel Company oi Wales Ltd., Box 9, Port Talbot, Clam. England Tulle, A. E, Sterling Grinding Wheel Div, Cleveland Quarries Co., Tiffin, Ohio Tung, Chi Fang (S), 607 W. High St., Urbana, III. Tupinamba, Haroldo Dart. Rua Professor Gabizo, 144. Agenda: Estacio de Sa, Rio de Janeiro, D. F,, Brazil Turbett, Paul E.F 1127 Chickasaw Dr., Paris, Tenn. Turck, Raymond L, 906 N. Highland, Dearborn, Mich. Turk, Karl, Sr.* Pemco Corp, 5601 Eastern Ave, Baltimore 24, Md. Turk, Richard H,*f Pemco Corp, 5601 Eastern Ave, Balti more 24. Md. Turnbull, Edward D, 500 Penn Ave, Scranton 3, Pa. Turnbull, John C, RCA-Victor Division, Radio Corp. of America, Lancaster. Pa. Turner, A. A, 153 Lake Ave, Metuchen, N. J. . Turner, Donald. Messrs. Lodge Plugs, Ltd, Rugby, England Turner, Mort D, 1424 Seventh St, Berkeley 2. Calif. Turner, P. P,, Jr..T c/o Thompson Products, Inc, 23555 Euclid Ave., Cleveland 17, Ohio Turner. W. E. S. (Honorary), 30 Whitworth Rd, Ranmoor, Sheffield 10, England Tu1t1t1l.e, George N, Benjamin Electric Mfg. Co, Des Plaines, Tuttle. Milton A, Almond, N. Y. Twells._Robert.*? Electric Auto-Lite Co, Spark Plug Div, Box 231, Fostoria, Ohio Twells, Robert GF (J), 528 Isabella Ave, Lock 4. Pa. Twyfords, Ltd, Cliffe Vale Potteries, Stoke-on-Trent. Eng land Tygart Valley Glass Co. (E. A. Hinkins), Washington. Pa. Tyler, VT. S, Co. (C. E. jenks), 3615 Superior Ave. N.E., Cleveland 14, Ohio Tysinger, Ted W. (J), 403 S. Hargrave St, Lexington. N. C. U Ueltz, H. F. G, 39 West St, Worcester, Mass. Uhrmann. Carl J, Imperial Glass Corp, Bellaire, Ohio Uleman. Turrell. 109 Virginia Ave, Aspinwall. Pa. Ulrich. Robert J, American Radiator & Standard Sanitary Corp, 1541 S. Seventh St, Louisville 8, Ky. Union Electrical Porcelain Works, Inc. (F. W. Van Orden), Box 762, Trenton 5, N. J. Union Franeaise des Prodnits Refractaires (Louise Halm), 15 Rue de Milan. Paris 9*. France United Clay Mines Corp. (K. E. Ward), Oakland & Prospect Sts, Trenton 6, N. J. United Glass Bottle Mfgrs, Ltd. (J. Tipping), 8 Leicester St, London W. C. 2, England United States Glass Co. (C. W. Carlson), Tiffin 15, Ohio United States Gypsnm Co. (C. M. Lambe), 300 W. Adams St, Chicago 6, 111. United States Steel Co. (J. C. Eckel), 525 Wm. Penn Place, Pittsburgh 50. Pa. Universal Clay Products Co. (C. A. Bloor). Sandusky, Ohio Universal Dental Co. (Joseph Kohn), 48th & 3rown Sts, Philadelphia 39, Pa. Universal Potteries. Inc. (G. D. Agnew), Cambridge. Ohio Universal-Rundle Corp. (H. P. Wangelin), 3305 W. Forest Home Ave, Milwaukee 15. Wis. Updike. George G.F 1613 Stonewood Rd, Baltimore 12. Md. Urban, Richard F, 820 E St, Sparrows Point 19, Md. Urban, Stephen F,, 268 Hartford Ave, Kenmore 23, N. Y. Utah Fire Clay Co. (C. H. Myers). 1078 S. First West, Salt Lake City, Utah V Valentine Fire Brick Co. (W. H. Peterson, Jr.), Woodbridge, N. J. Valentine, Peter C, 520 Market St, San Francisco 4, Calif. Valia. Bhayabhai H. (S), 4043 12th Ave. N. E,, Seattle 5, Wash. Valvi. Ilsabe E,, 65 Pine St, New York 5. X. Y. 44-4 Van Alsten, Rovr (. J j. y410 Patton, Detroit 23, Mien. Van Cleave, A. A, 8100 McGroarty St, Sunland. Cal::. Van Cott. Harrison C,, R. R. 1. Horseneads. N. Y. Van Der Beck, Roland (S), Research & Development. Carbo rundum Co, Niagara Falls, N. Y. Vanderbilt, R. T, Co. (Ira E. Sproat), 230 Park Ave, New York 17, N. Y. Vandermade, Richard J, Apt. 204, 1425 McFarland Rd, Pitts burgh 16, Pa. Van Dreser, Merton L. (J), 3243 Easton Blvd, Des Moines, Iowa Van Gelderen, L. P, N. V. Ramie Union. Enschede. Holland Van Godtscnnoven, Rer.e Society Cerebei Baudour, (Hainaut) Belgium Van Gordon. Donald V, Terrill Rd, R. R- 1, Plainfield, N. J. Van Horn, Harry T, 741 Floral Park Rd, Franklin Square, N. Y. VanHouten. Lt. J. G. Louis A. (J), U. S. N, U.S.5. Lapwing AMS-48. Naval Schools. Mine Wariare. Yorktown. Va. Vanick, James S, International Nickel Co, Inc, 67 Wall St, New York 5, N. Y. Vann. J. Graves. Jr, 415 Orchard Rd, Southern Pines, N. C. Van Nieuwenburg, C. J, Laboratorium voor Anaiytische Scheinkunde, De Vries van Heyst Plein No. 2, Delft, Netherlands Van Orden. F. W,, Union Electrical Porcelain Works, Inc, Box 762. Trenton 5, N. J. Van Schoick, Emily C,* New York State College ot Ceram ics, Alfred, N. Y. Van Scnoik, Dickson M. (J), 419 Forrer Blvd, Dayton, Ohio Van Tassel, R. K,, 527 Green Tree Rd, Kohler, Wis. Van Vlack. L. H, U. S. Steel Co, Metallurgical Div, Rm. 3426. 525 Wm. Penn Place, Pittsburgh, Pa. Van Wiggeren, Charles G, American Emery Wheel, Richmond Square, Providence 1. R. I. Van Zee. Arthur F, 3430 Inverness Ave, Toledo 7. Ohio Vasilos, Thomas (S), Rm. 607B Grad. House, Massachusetts Institute of Technology, Cambridge 39, Mass. Vaughan. T. Carter,! Libbey-Owens-Ford Glass Co, Box 4278, Charleston 4, W. Va. _ Vaughan. W. Harry,*T Atlanta Industrial Laboratories. 746 DeKalb Ave. N.E, Atlanta, Ga. Vaught. John C. (5), 217 S. Hyland. Ames, Iowa Veaic, Jack H, 80 W. Willow St_ Coal City, 111. Veiga, Roberto A, (S). Box 62. Alfred. N. Y. Venable, Charles R, Jr.F 1512 S. Penn, Bartlesville. Okla. Ver.able, Joe G,, Chattanooga Glass Co, Chattanooga 10, Tenn. Venis, Ernest, British Vacuum Flask Co, Ltd, Llssenaen Works, Gordon House Rd, Kentish Town, London N. W. 5, England Vera. Ir.g Francisco,1 Hidalgo 1758 Pie, Monterrey N. L, Mexico Verts, Frank! (J), 421 N. Vance, Carey, Ohio Verzocchi. Enrico, Refrattari Verzocchi, Via Teiesio 5. Milano, Italy ,, Vesuvius Crucible Co. (Francis L. Arensberg), Bex 3275, Swissvale, Pittsburgh 18. Pa. Victor Insulators, Inc. (H. Failmezger), Victor. N. Y. Vidriera Monterrey, S. A. (Alfonso F. Rodriguez), A.partado, 162, Monterrey N. L, Mexico Viger. Burnett C, 130 E. Third St, Corning, N. Y. Vilensky, Michel 3, 1515 27th Ave., San Francisco 22. Calif. Vinal. Francis E,, 330 Whittemore Bldg,. Massachusetts In stitute of Technology. Cambridge 39, Mass. Vincent. George L.F 10 Farrington Rd, Oceanside. N. Y. Vinther, E. Heikel, Porcelainfabriken Norden, Valby Lang- gade 95. Copenhagen, Denmark Vitolo. Sylvester A, Box 797. Blacksburg. Va. Vitreous Steel Products Co. (Edgar H. Weil), Box 1791, Cleveland 5, Ohio Vitro Mfg. Co. (Theodore Lenchner), 60 Greenway Dr, Pitts burgh 4, Pa. Vodicka, Albert L,, Aetna Porcelain Enameling Co, 4701 Augusta Blvd, Chicago 51, 111. Vogl. Thomas P. (J), Westinghouse Research Labs, Nuclear- Physics & Electronics Div, East Pittsburgh. Pa. Vogt, Harold G, Corning Glass Works. Corning, N. Y. Vollrath Co. (Jean C. Vollrath), 18th and Michigan Aves, Sheboygan, Wis. Vollrath. Jean C, Voilrath Co, 18th & Michigan Aves, She boygan. Wis. Von Allesch, Marianna, Clay & Glass, Inc, 50 W. 13th St, New York. N. Y. Vonturv, Francis J, Lehigh Ave, Perth .Amboy, N. J. Voorhies, John H, 243 Arrow Highway, Claremont, Calif. Ceramic Bulletin- ' i i | j ; Vose, Wilfred, New Zealand Pottery & Ceramic Research Assn., Ill Sydney St.. Wellington, New Zealand Voss,. Marion J, Box 761, Alfred, N. Y. Voss, Raymond O., Corning Glass Works, Box 544, Corning, N. Y. Voss, Walter C., Massachusetts Institute of Technology, Rm. 7-221, Cambridge 39, Mass. Voss, Wendell G. (J). H. C. Spinks Clay Co., Inc., Box 829, Paris, Tenn. Vretos. Epaminondas, Hellenic Co. of Chemical Products & Fertilizers Ltd.. Piraeus. Greece Vukovich, Milan, Jr. (S). 1162 E. Mound St., Columbus, Ohio Waggoner, Jack H., 240 Quentin Rd,, N,, Newark, Ohio Wagner, Bruce F., 186 N`. Vernon Ave., Pasadena 3, Calif. Wagner, Rio B.t 1398 Brice Rd., Reynoldsburg, Ohio Wahl. Albert J., A. J. Wahl. Inc., 8 Central Ave.. Brocton, N. Y. Wahlgren, Wald., A. B. Gustavsbergs Fabriker, Gustavsberg, Sweden Wainer, Eugene, Horizons, Inc., 2891 E. 79th St., Cleveland, Ohio Waite, Virgil H., 433 Beech St.. Berea, Ohio Wakefield, Richard E. B., Shallcross Mfg. Co., Collingdale, Pa. Walden, Albert S., National Carbon Co., Cleveland, Ohio Walker, A. M., Australian Tesselated Tile Co., Mitcham, Vic toria, Australia Walker, Eugene E., 220 W. Sheridan Ave., New Castle, Pa. Walker, Henry E., Harding Glass Co., Fort Smith, Ark. Walker, Herbert M,, Walker China Co., Solon Rd., Bedford, Ohio Walker, John, Morgan Crucible Co., Ltd., Battersea Church _Rd, London S. W. 11, England Walker, Prescott H, Carborundum Co., Niagara Falls, N. Y. Walker, Warren W.. Graphite Metallizing Corp., 1050 Nepper- han Ave., Yonkers. N. Y. Walkup, D. H., Kilgore Ceramics Corp., Box 1619, Kilgore. Texas Walla. Max R., Box 1369, Little Rock, Ark. Wallace. Arthur fj). 714 Battery place. Chattanooga 3. Tenn. Wallace. Curtis C, Electric Storage Battery Co., Allegheny Ave. & 19th St., Philadelphia 32, Pa. Wallace, Paul F. (S3. S06 Washington Ave.. Tyrone, Pa. W'allace. William W,, 415 Centennial St., New Castle, Pa. Waller, Ronald ].. N. V. Philips Gloeilampenfabrieken, c/o Gem. Bel. Glas. Eindhoven. Holland Walsh, Donald E.. Consolidated Feldspar Corp., East Liver pool, Ohio Walsh Refractories Corp. (J. L. Crawford), 101 Ferry St., St. Louis 7, Mo. Waiterspiler. Luc. 31, Rue Boussingault. Paris XIII. France Walton. Jesse D.. Jr., 6819 Virginia Ave.. Parma 9, Ohio Walton, S. F..*t Exoion Co., Tonawanda. N. Y. Walworth. Chester A., Libbey-Owens-Ford Glass Co., Box 4278. Charleston 4, W. Va. Wambold. Jack (J). Apt. 203C Faller Dr., New Milford. N. J. Wampler, Roy W, Libbey-Owens-Ford Glass Co., Technical Bldg., 1701 E. Broadway, Toledo 5, Ohio Wangelin. H. P., Universal-Rundle Corp.. 3305 W. Forest Home Ave.. Milwaukee 15. Wis. Ward, Charles J.. 1958 Cameron St.. Regina. Sask.. Canada Ward. Clifford D., 74 S. San Gabriel Blvd., Pasadena 10. Calif. Ward. George W.. Gustin-Bacon Mfg. Co., 1412 W. 12:h St., Kansas City, Mo. Ward, K. E., United Clay Mines Corp., Oakland & Prospect Sts., Trenton 6. N. J. Ward. Mrs. S. Paul. 601 Mission St.. South Pasadena. Calif. W'arde. John M.. 22 Outer Dr.. Oak Ridge, Tenn. Warfield, Robert A., 2460 E. Livingston Ave., Columbus 9, Ohio Warner, Maurice F. (S), St. Louis. Long Beach. Calif. Warren. George.1 3951 Langley Court N. W,, Apt. D-586. Wrashington 16. D. C. Warriner. Lendall P, c/o Cyprus Mives Corp., 161 E. 42nd St., New York 17. N. Y. Waryga. Casimer F.. 342 EL Ashdale. Philadelphia 20, Pa. Washburn, Lucius H., Box 242, Alfred, N. Y. Washington Brick Co. (Thomas Somerville III), Sixth & Decatur Sts. X. E.. Washington 11, D. C. Washington Porcelain Co. (C. H. Ackerson), Willow St, Washington, N. J. Waters. Martin R. (J). 28 Sweetbriar Lane, Levittown, Pa. Vol. 31, No. 10 (1952) Watkin, Robert W., 2507 St. Clair Ave., East Liverpool Ohio Watkins, George B., Libbey-Owens-Ford Glass Co., 1701 E. Broadway, Toledo. Ohio Watkins, Joel H., Charlotte C. H., Va. Watkins. Ray T., U. S. Tariff Commission, Ceramic Div., Washington, D. C. Watkins, . J., 28 S. Garneid. Hinsdale, 111. Watkins. W. J., Kentucky Clay Mining Co., Mayheld. Ky. Watson, George F., American Brake Shoe Co., Metallurgical Lab., Mahwah, N. J. Watson, James M. (J), 700 First Ave., Farmville, Va. Watt. Charles (S), 5229 19th X. E,, Seattle 5, Wash. Watt, Loren, Watt Pottery Co., Crooksville. Ohio Witt Pottery Co. (Loren Wat:). Crooksville, Ohio Watts, Arthur P., A C Spark Plug Div., General Motors Corp., Dept. 3103. Flint. Mich. Watts, Arthur S.*? (Honorary), Lord Hall, Ohio State University, Columbus 10, Ohio Weaton, Ralph L, St. Joseph Lead Co. of Pennsylvania, Z'.nc Smelting Div., Monaco. Pa. Weaver, Harold L., 303 Chesnut St., Port Allegany, Pa. Weaver, R. A.," Ferro Corp., 4150 E. 56th St., Cleveland 5, Ohio Webber, John J.. 495 Moull St., Newark, Ohio Weber, 3erthold C.. 308 Wallace Dr.. Fairborn, Ohio Weber, Don A.. Deister Concentrator Co., 901 Glasgow Ave., Fort Wayne, Ind. Weber, Kenneth E., 2742 Bennett Ave., Evanston, 111. Webster, Charles E.,T 311 E. Beaver St., Zelienople, Pa. Webster, David, West Virginia Pulp & Paper Co.. Charleston, S. C. Webster, Hugh B., Harshaw Chemical Co., Swanson & Jack- son Sts.. Philadelphia 48. Pa. Webster, Paul A.. Moravia Rd., Avon, Conn. Weddell, George G., Mellon Institute, Pittsburgh 13, Pa. Weedy, Robert C. (J), Shawnee, Ohio W'ehtje, Ernst J., Box 269. Malmo 1, Sweden Weidel, Robert A., 1238 N. Goodman St., Rochester 9. N. Y. Weidman, V. Wesiey. 201 Duncan Ave., Wilmington 3, DeL Weigel. Robert C,, 820 Woodlawn, Mexico, Mo. Weil, Edgar H., Vitreous Steel Products Co.. Box 1791, Cleveland 5, Ohio Weiner. George H.. Deena Products Co., 825 S. Wabash Ave., Cnicago. 111. Weinfurmer, E. M., North American Refractories Co, Na tional City Bank Bldg., Cleveland 14, Ohio Weinstein, Alex. 200 N. Water St., Peekskill, N. Y. Weintritt, Donaid J. (J), 6316 Beechwood St, Houston 21, Texas Weise. Robert L, 2017i E. Second St, Logan. Ohio Weiske. Ino, Box 353. Mission, Texas Weiss. E. Joseph,: 3603 Cherry Lane, Austin, Texas Weiss, W. Russeil. Wellsvilie. Mo. Weisz. Robert S, RCA Laboratories. Princeton. X. J. Welch. A. Philip.7 912 Grand Ave, Ames. Iowa Welch, Richard L, Dominion Firebrick & Clay Products, Ltd, Clavbank, Sask, Canada Weldon, Walter A,* 621 Edgewood St, Baltimore 29. Md. Weller. Harvey C,, Surface Combustion Corp, 2375 Dorr St, Toledo I, Ohio Welling, Charles E,, Ford Motor Co, Scientific Lab. Engr. Staff, Box 2053. M B Station. Dearborn. Mich. Wells, A. A,* Homer Laughlin China Co, Newell. W. Va. Wells. Ames H. (S). 2531 Canterbury Rd, Columbia. S. C. Wells, J. M,, Homer Laughlin China Co, Newell, W. Va. Weils. Ralph G, United States Steel Co, 234 Atwood St, Pittsburgh 13, Pa. Welsch. William W. (J), General Delivery, Granviile. Ohio Welshans. L. T, Diamond Alkali Co, Painesville. Ohio Welterlen. James D. (S). R. R. 3, Ames. Iowa Wenczel. C, Wenczel Tile Co, Box 908. Trenton, N. J. Wenczel Tile Co. (C. Wenczel) Box 908. Trenton, N. J. Wendt. Neison E,, American Potash & Chemical Corp, 122 E. 42nd St, New York 17, N. Y. Wenger, A. H. C, Messrs. Wengers, Ltd, Etruria. Stoke-on- Trent, England Wenning, W. F,, Ceramic Color & Chemical Mfg. Co, Box 297, New Brighton, Pa. Werner, Alan J, 159 Watauga Ave, Coming, N. Y. West, Frank, Haslemere Greenlane, Buxton, Derby, England West. Howard F, 1400 Caton Ave, Joliet. 111. Westbrook, J. H, General Electric Co, Room 327, Research Lab, The Knoils, Sehnectady, N. Y. Western Brick Co. (I. R. Cline), Danville. 111. Western Clay Manufacturing Co. (A. C. Bray), Box 176, Helena. Mont. Western Electric Co, Inc. (J. W. Scott). 7640 Hawthorne Station. Chicago 23, 111. 445 Western Electric Co. iK. E. Blankenstein). 25-5 Shadeland Ave, Indianapolis. Ind. Western Feldspar Milling Co. (J. W. Magnusom, Box 671 Salida, Col. Westfall. F.mmett M. (5), Box 126. Allred. N'. Y. Westinghouae Electric Corp. (John D. Harnish, Jr.), Derry, Pa. Westinghouae Electric Corp. (Howard E. SteeleV Box 1312. Fairmont. W. Va. Westman. A. E. R,,* Dept, of Chemistry, Ontario Research Fdn., 43 Queen's Park. Toronto 5. Ont., Canada Westmont, 0. B., Johns-Manville Products Corp., Lompoc, Calif. Weston, Ralph H,t Arketex Ceramic Corp., Brazil, Ind. West Virginia Brick Co. (Claude F. Wiseman), Charleston, W. Va. Weyl, Woldemar A.,* Dept, of Mineral Technology, Penn sylvania State College, State College, Pa. Whalley, Roger E.I (J ). 610 E. Third St.. Dover. Ohio Wheaton. Laur Don. T. C. Wheaton Co.. Millville. N. J. Wheeler. D. D., Titanium AUov Mfg. Co., Ill Broadwav, New York. N. Y. Wheeler. William HJ (J). R. R. 1. Surry. Va. Wheeling Steel Corp. (Ernest B. Snyder), Steubenville South Plant. Steubenville, Ohio Wherry. Allen P.,f 6220 Ridge Rd., Parma 29, Ohio Whicher. William C. (S). 224 Ash, Ames, Iowa Whitacre. Maxwell L.. 313 72nd St., Niagara Falls, N. Y. Whitaker. Fred A,f 64 Linden Ave., Metuchen, N. J. Whitaker, H., Rustless Iron Co., Ltd., Trico Works, Keighley, England Whitaker. L. R.,*t Carolina Ceramics, Inc., R. R. 3, Columbia, S. C. White. Frank L, 15117 E. Vernor Highway, Apt. 11, Grosse Pointe Park 30. Mich. White, George D. (Si. 121 Hoyt Lane. Oak Ridge, Tenn. White, Harold E,*t R. R. 6, "Windy Knoll." Butler, Pa. White, J. F., 938 Northampton Dr.. Silver Spring, Md. White, Jonathan S.. 1302 Singer Place, Wilkinsburg, Pitts burgh 21. Pa. White. Robert C,, Scintilla Magneto Div.. Bendix Aviation Corp.. Sidney, N. Y. White. Theodore G.. 19 Scenery Rd., Pittsburgh 21. Pa. Whitehead. Merlin H, Canton Stamping 4 Enameling Co., Canton 5. Ohio Whitesell. I.vsle E.. Wellsviile. Mo. Whitfield. Robert E., Charles Tayior Sons Co., Box 58, Annex Sta,, Cincinnati 14, Ohio Whitford. \\ iiliam G,," Box 38. Olympia Fields. 111. Whitmore. Edgar F.. Jr.. Shippers Car Line Corp.. 30 Church St.. New York. N. Y. Whitney. Eugene H., Gladding, Mc3ean 3: Co., 15C0 First Ave., S., Seattle. Wash. Whitney. John B. tS'i. 123-A E. Second St.. Media. Pa. Whittaker, Clyde M., Box 960, New Castle. Pa. Whittaker. G. Ward. 105 Sheraton Dr.. San Antonio. Texas Whittaker. Harrv, American Rock Wool Corp.. South Plain- field. N. J. Whittemore. J. W..*T Virginia Polytechnic Institute. Blacksburg. Va. Whittemore, O. J., Vincent Clay Products Co.. Box 603. Fort Dodge. Iowa Whittemore. O. J.. Jr..f Norton Co.. Worcester 6. Mass. Whittemore. Russell G.. Pittsburgh Plate Glass Co.. 2000 Grant Bldg.. Pittsburgh 19. Pa. Wicks. John S.. 333 New Lenox Rd., Pittsfield. Mass. Widemann. R. V.. Institut de Ceramique Frangaise, 6 Grande Rue. Sevres. Seine et Oise, France Wignton. Roger I. (S). Laclede Christy Co., 3600 Forbes St.. Pittsburgh 13. Pa. Wiker. Richard M.. 206 Rand Ave.. Painted Post. N. Y. Wilansky, Harold. 190 Decatur St.. Coming. N. Y. Wilcox, Herman G., 800 Ross Ave, Pittsburgh 21. Pa. Wilcox. James W, Alliance Clay Product Co, Alliance, Ohio Wilder. David R. (S). 116 Hyland. Ames. Iowa Wilhelm. William J. (S), 318 Centre St, East Mauch Chunk. Pa. Wilkes, Gordon B..* Massachusetts Institute of Technology, Cambridge 39. Mass. Wilkins. E. D,, Kaiser Aluminum & Chemical Corp.. Permanente. Calif. Wilkins. Ian Hugh (J), 62 Whitehall Rd, Toronto. Ont_ Canada Willems, H. W. V, 1513 Pacific Ave, Brackenridge, Pa. Williammee. G. Darby (SI. 45 N. Queen St, York. Pa. Williams. Alan BM 920 Monte Sano Ave, Augusta. Ga. Williams. Arthur E, 1214 Eighth St, Moundsviile, W. Va. 446 Williams. Charles (Si. Bux 71o Alfred. N. Williams, Clyde.' Batteile Memorial Institute, 505 King Ave, Columbus 1, Onio Williams. Floyd J. (Si, R. R. 3, Norwalk. Ohio Williams. Francis J, Baroid Sales Div, National Lean Co, Box 1675. Houston 1, Texas Williams, George F, 130 PJatt St, Painted Post, N. ):. Williams. Gordon R,, Box 155. Arkansas City. Kan. Williams. Harry M, Locke Inc, Charles 4 Cromweil St, Baltimore. Md. Williams, John A, Box 250, Trenton 2, N. J. Williams. John C, Franklin Manor, Apt. 5-J 2. Morris town. N. J. Williams. I.eRoy L, Jr. (J), 165 W. Hancock Dr, Augusta. Ga. Williams. Robert A, Jr, American Encaustic Tiling Co, Inc, Ninth St. 4 Kenilworth Ave, Lansdale. Pa. Williams. Robert B,, 1107 Westwood Ave, Chattanooga, Tenn. Williams. Robert M. (J). 412 Colleen Rd, Baltimore, Md. Williams, Walter EM 1519 Myrtle Ave, Zanesville. Ohio Willis, James B, 1355 Crofton Rd, Baltimore 12. Md. Willmore. Tracy A, 1118 W. Illinois St, Urbana, 111. Willms, Albert E, 476 Parker Ave, Hackensack, N. J. Wills. Robert E, Box 220. Coal City. 111. Willson Products, Inc. (Thomas A. Willson), Box 622. Read ing, Pa. Willson. Thomas A, Willson Products. Inc, Box 622, Read ing, Pa. Wilson. Calvin S, Libbey Glass Div, Owens-Illinois Glass Co, Toledo 1, Ohio Wilson, Charles L,, 217 N. Meridian St, Brazil. Ind. Wilson, George, 131 Edison Ave, New Castle, Pa. Wilson, Hewitt.*1 12 W. Circle Rd, Norris, Tenn. Wilson, J. E, Box 842, Waxa'nachie, Texas _ Wiison. Maurice S,, Spring Lake Rd, Wallingford. Conn. Wilson, Robert C. (S). 150 Fernwood Ave, Trenton. X. J. Winaml. William T,, Universal Major Electric Appliances Div, Inc, Box 923. Baltimore 5. Md. Winbum, H. L,, Box 1369, Little Rock. Ark. Windisch, Robert P,_RoseviI!e Pottery. Inc, Zanesville. Ohio Winemiller. William r, 11 Ardmore Rd, Worcester 9. Mass. Winship, Lee C. (J). R. R. 2. Emporium. Pa. _ Winship, William W, Winship Silica Products Co, Freeport. N. Y. Winship, William W,, Jr, Box 417, 14 Bixlev Heath. L/rtbrook. N. Y. Winter. Aniuta, Institut d'Optique Theorique et Appiiquee. 3. Bid. Pasteur. Paris (15'), France Winter, William E. (J). 2370 Ber.sonia Ave, Pittsburgh 16. Pa. Winthrop, Robert C, 2012 K St. N.W, Washington 6. D. C. Wisconsin Porcelain Co. (L. A. Stohl), Sun Prairie. Wis. Wise. L. G, E. I. du Pont de Nemours 4 Co, Chemical Dept, Expt. Sta, Wilmington. Del. Wisely, Harriet R. (S). 12 Arthur St, South River. N. J. Wiseman. Claude F, West Virginia 3rick Co, Charleston, W. Va. Wishoski. I. Stanley. Industrial Heating, 1400 Union Trust Bldg, Pittsburgh 19. Pa. Wisnyi, Leonard G. (S), 14 Simplex Ave, New Brunswick, N. J. Wiss. J. E,** 1339 Lincoln Rd, Columbus 12. Ohio Witkowski. Stanley. 316 Jess Ave, Haddonfield. N. J. Witmer, Frank. 612 W. Main St, Woodville, Ohio Witschey. Ray A, A. P. Green Fire Brick Co, 122 S. Michi gan Ave, Chicago 3, 111. Witter. Raymond B, Apto. 4092 Correo del Este. Chacaito- Caracas. Venezuela Witucki. Robert M,, 332 W. Foster Ave, State College. Pa. Wollard. Lee F, 1104 Chestnut St, Burbank. Calif. Womeldorph. R. C, 149 S. Quentin. Rd. Newark. Ohio Wood. Clifton E, 93 Elm St, South Dartmouth. Mass. Wood. Kenneth O, 3900 E. California St, Pasadena 10. Calif. Wood. Kenneth T, 102 Grace Blvd, Painted Post, N. Y. Wood, Lewis C, Braden Copper Co, Rancagua. Chile Wood. Llewellyn. Jr, Carrington Woods. Milledgeville. Ga. Wood. Russell K. (S). 3900 E. California St, Pasadena 10. Calif. Woodland. Donald J, Structural Clay Products Inst, 81 E State St, Columbus 15. Ohio Woodruff. Ernest W,, 910 Custer Ave, Evanston, 111. Woods. Wiiliam J, Pennslyvania Pulverizing Co, Box 587, Lewistown. Pa. Woods. William J, Jr, Pennsylvania Pulverizing Co, 140 Stanwix St, Gateway Center, Pittsburgh 22. Pa. Woodville Lime Products Co. (J. Robert Cowell, Jr.), 2140 Jefferson Ave, Toledo 2, Ohio Woodward. Roger (J). 861 Euclid Ave, Elmira, N. Y. Woodward, Thomas R, 2558 Oakwood Ave, Zanesville, Ohio Ceramic Bulletin Wooldridge. Morris L. (.J), 2610 W. Berwyn Ave., Chicago 25, 111. Wooiey, Seward E.,f 6 Westbury Bldg., 66 E. Cliff St., Somer ville, N. J. Woolling. John L., 6162 N. Meridian St., Indianapolis 20, Ind. Worcester Boyal Porcelain Co, Ltd. (Joseph F. Gimson), Royal Porcelain Works. Worcester, England Worcester, W. G.,*T 720 Sask. Crescent E., Saskatoon, Sasic, Canada Work. Lincoln T.. 15 N. Crescent, Maplewood, N. J. Worthington Corp. (Herbert E. Gallison), Industrial Mixer Div., Plainheld. N. J. Wortley, G. W., R. & A- Main, Ltd., Gothic Works, Falkirk, Scotland Wright, Edward P.,t Box 287, East Liverpool, Ohio Wright, Harold D. (S), 1223 Biglev Ave.. Charleston. W. Va. Wright. J. Em Messrs. A. G. Hackney St Co., Ltd., Fairfield Pottery, Hanley, Stoke-on-Trent. England Wright, J. W.,t 1129 Warren St., Alton, 111. Wyatt. Bradley W.. N. Clark & Sons Div. of Pacific Clay Products. Box 418. Alameda. Calif. Wyckoff. W. R.. Joseph Dixon Crucible Co.. 167 Wayne St.. Jersey City, N. J. Wygant. James F., Standard Oil Co. (Indiana), Engineering Research Dept., 910 S. Michigan Ave., Chicago, .III. Wvsong, Charles F., Georgia Institute of Technology, Atlanta, Ga. Wvsor, D. C., General Chemical Co., 40 Rector St., New York 6, N. Y. Y Yamaguch:. Mitsuo. 72 Oakwood Ave., Arlington. N. J. Yamamoto. Hideo. 305 W. 89th St.. N'ew York 24. N. Y. Yamasaki, Kazuo. Chemical Institute Science Faculty, Nagoya University, Chikusa, Nagoya, Japan Yarte, Andrew A., Apartado 486, Monterrey, N. L., Mexico Yavorskv. Paul J., McDanel Refractory Porcelain Co.. Beaver Falls. Pa. Yawitz, Murray, Fish-Schurman Corp., 70 Portman Rd., New Rochelle. N. V. Yeater. Roy G.. Fostoria Glass Co.. Moundsviile. W. Va. Yosniki, Bumpei, Asahi Glass Co., No. 1 Benten-cho Tsuru rai-Ku. Yokohama, Japan Young, David A., Cloud Ceramics, Concordia, Kansas Young, Donald E.. Design News, 4612 Woodward Ave., Detroit 1. Mich. Young:, James, John G. Stein & Co., Ltd., Manuel Works, Linlithgow, Scotland Young, John C.. Box 549, Whittier. Calif. Young, Robert J., Chicago Hardware Foundry Co., North Chicago, 111. Young, Stanley H.,f Cleveland Quarries Co.. Amherst, Ohio Young, Vincent M., Bausch St Lomb Optical Co., Rochester 4, N. Y. Young, Willard G.,f W. A. Case & Son Mfg. Co., Robinson. 111. Young, William 0.,t Box 575, Honeove Falls, N. Y. Youngblood. Charles J.. Jr., Mississippi Glass Co.. 88 Angelica St., St. Louis 7, Mo. Yount, Richard V., Knox, Pa. Yutzey, Marvin G-, Fostoria Glass Co., Moundsviile, W. Va. Z l Zahn, William A., 10 Church St., Matawan, N. J. Zahniser, George B.. 109 Englewood Ave., New Castle. Pa. Zanowiak, Peter P., R. R. 2. Box 286, Mineral Wells, Texas Zapfe, Richard Cm 162 Penfield St.. Pomona, Calif. Zapffe, Carl A., 6410 Murray Hill Rd., Baltimore 12, Md. Zarbo, George, 2638 Latonia Blvd.. Toledo 6, Ohio Zavislak. Lewis, 2519 S. Sepulveda Blvd., West Los Angeles 64, Caiit. Zawisiowski. Arthur W (J), 904 Ohio Ave.. Trenton 8, N. J. Zeiller, Irwin F.. 150 Mason Drive, Flower Hill, Mannasset, Long Island, N. Y. Zerioss, Samuel, Crystal Branch, Naval Research Lab., Wash ington 20, D. C. Ziegield. Robert L.. Lead Industries Assn.. 420 Lexington Ave., New York 17. N. Y. Ziegier, Byron J., American Optical Co, Southbridge, Mass. Ziniar, Frank. Corning Glass Works. Main Lab.. Coming, N. Y. Zimmer, David C..T 223 Chelsea St., Sistersville, W. Va. Zimmerman, William F. (S). 4211 Allendori Dr., Apt. 39, Cincinnati 9. Ohio Zink, George H., A. O. Smith Corp., 3535 N. 27th, Milwaukee, Wis. Zink. Harold F., Owens-Illinois Glass Com 1700 N. Westwood Ave., Toledo 1, Ohio Zneimer, Joel E. (J), 196--0C 65 Crescent, Fresh Meadows, N. Y. Zollntan, James A. (S'*. 1221 Penrod Ave. S. E.. Roanoke. Va. Zorzi, Eugene R.. 1329 Poplar St.. S. Greensburg, Pa. Zudnak. Stephen J.. Box 1599. Trenton. N. J. Zumwalt, Donald A., 13813 Woodworth Ave., E. Cleveland 12, Ohio Zvanut. Albert J..1 Lincoln Electric Co.. 22801 St. Clair Ave.. Box 3115. Cleveland. Ohio Zvanut. Frank J.,f Ferro Corp., 4150 E. 56th St., Cleveland 5, Ohio Zwermann. Carl H.,*T 806 W. Main St., Robinson. 111. Zwetsch, Artur, Villeroy S: 3och. Mettlach.'Saar. Germany Addenda Anthony. George H.. 3951 Howard St., Youngstown. Ohio Beers. Roland F. Rensselaer Polytechnic Institute. Troy. N. Y. Cook. Leslie J., Chromatic Television Labs., 703 37th Ave., Oakland. 1. Calif. Dietzel. Adolf. Max-Planck-Institut tur Silikatforscnung, Wurz burg, Germany Neunerplatz 2 Drake. Arthur D.. The Gaycraft Co.. Box 866. Columbus. Ohio Drouhard, W. J.. Mansfield Sanitary Pottery, Inc.. Perrysville, Ohio jjurgjevic. Teodore. "Jugokeramika", Zagreb. Gajeva 2a, Yugoslavia Hawks, William L., 11011 56th Ave.. S.. Seattle. 38. Wash. Hepler. Ernest C.. 204 Austin Dr.. Fairless Hills. Pa. Herpel. Clarence M.. Southern Brick St Tile Co.. Cherokee Sta., Box 5. Louisville 5. Kv. Hobson. Joe P., Acme Brick Co.. Box 708. Denton. Texas Kenya Kyanite Ltd. (Mansfield Markham), 28 Eccleston St.. London. S. W. 1. England King. Harry M. (S). Friiev Hall. Ames. Iowa Kurkjian. Charles R.. Graduate House. Mass. Inst, of Tech.. Cambridge, Mass. L. & L. Mfg. Co. (Joseph Freeman). 804 Mulberry St., Upland. Pa. Nadler. Marion R. (S). 129 E. Seventh St.. Ames. Iowa Pisula. J. Donald. Coming Glass Works. Coming. N. Y. Sohn. Erwin. Box O. Sta. A.. Joglin. Mo. Tamey, Eugene G.. 507 E. Main it.. Logan. Ohio Teague. A. D.. Babcock & Wilcox Co.. Box 923, Augusta. Ga. vOL. 31. No. 10 (10.521 447