Document RjxXvpZMpVkJQ2M1qNOe4aK1B

<o The American Ceramic Society BULLETIN monthly publication devoted to the proceedings of The Society, discussions plant problems, discussions of technical, scientific, and art questions, and promotion of cooperative research Volume 29, 1950 Charles S. Pearce, Editor Harold L. Dakin, Assistant Editor Luther E. Ohrstedt, Advertising \Ianager Committee on Publications: Karl Schwartzwalder, Chairman; R. E. Birch, J. J. Canfield, and C. H, Hahner Contributing Editors: Officers of Industrial Divisions and Local Sections (For names, see back of Title Page) Executive, Editorial, and Advertising Offices: 2225 North High Street. Columbus 2. Ohio Publication Office: 20th and Northampton Streets. Easton, Pa. PLAINTIFFS EXHIBIT viv-ooa VN*rrcvc*.Hi3 ?mctco*a#m IN FLAT GLASS TANKS, TOO, '"PRETTY IS AS PRETTY ROES" his photograph above is interesting in that it snows how one of America's most progressive flat-glass manufacturers builds the melting end of its tanks, utilizing Corhart Electrocast Refractories. Note the extensive use of Corhart ZAC top course sidewalls and superstructure. Interesting as this photograph is, how. ever, its interest is vastly increased by the fact chat these ranks consistently turn out high-qualicv clear flat glass at very low production costs. May we discuss life, production ind costs with your Corhart Refractories Company, Incorporated. l6ch & Lee Streets, Louisville 10, Kentucky rw --w* CORHAAT.' "HJCTIOCaJT.'* Md ZaC' IT* Ttm Mira Mt miiMti tv Ceraen Mnoiw Cm^w,, lertrywwA REFRACTORIES 16 Ceramic Bveletin i r~r'1 he niioto jbove shows part ot the Corner: Zac hjc.k-.vall and doghouse of a Thatcher Glass Company all-Corhart flint bottle tank at Elmira. N.Y. Despite the fact' that this tank has just completed a run of Sin davs in which 10-i,ito tons of glass w-cre Produced. most oj the Cornart Zac material u ili.'l m vooJ condition. Toe arches are still oeing used. Tile data at the right will interest iou. Meanwhile, if vou would like to have jnv further facts, or to discuss the possibilities of Cornart Zac EIcctrocast Refrac tories in the vulnerable portions of your furnaces, we would welcome an opportunity to talk wun vou. Cornart Refractories Company. Incorporated. I6th and Lee Streets. Louisville 10, Kentucky. SEE YOUR CQRHART REPRESENTATIVEJ AT THE 3TATLER, VET* YORK, WHILE ATTOTOINO THE Jlxo AMERICAN CERAMIC SOCIETY CONVEHTIOM. Melting area. sa. ft............................................ OSS Furnace h/e. davs .............................................. 350 Furnace life, tons ...............................................10-L id? Furnace life, tons sq. ft................................... 152.3 Average rate of puil. tonsoperating dav 12".T Average rate of puil. sa.ft., ton .................. 5.j<> fh* ra | rciM*T." (llA. IT," i4 2 M. ' IN Tm4 Mtiki K.tl .At.ti'i mawmium it Lwnn ItHiiiwrti CuntMi, lw*rtaMi4> Ceramic Bulletin j American Ceramic Society Membership Roster l j This -toiler ->f Members is published :r the use <i ihe Members of Tl:e American Ceramic Society. The list is alphaI heural. '.iiih names 01 Corporation Members m lioici-tace |)e and iheir voting reiireseniaii'."es lullowin^ m paremheses asu-n-k i ') follows the name of each Society Fellow, and a dagger (f) follows the name of each member of the Institute of Ceramic Engineers. Junior and .Student Members are indicated by ( I) and (S). respectively. Life and Honorary Members are also indi cated parenthetically after the names. A separate Roster of the Institute of Ceramic Engineers. showing grades of membership, appears on pages -it) and TJ of the advertisin' section in this issue. - New Members and other changes received too late to lie included are listed in the Addenda at the end of this Hosier. Jibcv. R. G, General Refractories Co., I52U Locust it.. Phila delphia .. Pa. \berncthy. Lonnie I... Jr., Box -*85, Hebron. N. D. Ibingdon Potteries, Inc, ij. Nl. Lewis.), Abingdon, III. Abramson. Isaac, Av. Copacabana 959, Apt. 9o2, Rio de Ja neiro. Brazil .ckerson. C. H., Washington Porcelain Co, Willow St, Washington. N. J. C Spirit Plug Div, General Motors Corp. ( Karl Schwartz- fwalderi. Flint 2. Mich, air, Kate Kyle. Copalis Beach, Wash, arris. Edward M.. Cloverport. Kv. ams. Lcison H, 2301 L'pton 5t. N. W, Washington 3. ID. C. ams. Milton, The Graduate House. Mass. Institute of Tech- jjlogy, Cambridge 59. Mass. itr.son, Robert. Onion Glass Ltd, Talana, Natal, 5. Africa sston Flat Glass Co, Box 651. Clarksburg, W. Va. ck. Albert S.A American Radiator 4 Standard Sanitary a., Ne-.v Orleans Plant, Box 3097. New Orleans 12. La. cx. Lawrence A', Jr, W. A. Case & Sou Mtg. Co, totir.son. 111. , eriey. James R, 42 Church St, Brierley Hill, S. StarTord. tglind erson. J. G, 10o21 Crestwood Dr, Seattle 98. Wasn. rholri. George H, Saxonburg Potteries. Saxonburg, Pa. kihe, R. -V, Ramdas Peth. Akola (Berar). India :-v, C. D, Universal Potteries. !nc,, Cambridge. Ohio^ arr, V. P,, National Industrial Sand Assn, 1325 St, W, Washington a, D. C. a. J. W, Nitirnal Fire Proofing Co. of Canaca Ltd, dershot. Ont, Canada Charles L. (S). Box 413. Georgia Institute of Tech- |togy. Atlanta, Ga. t Porcelain Co. IF. W. Butler), Akron 14. Ohio_ s-Schoenberg, Ernst. Redfield Village. Apt. 17 A 4, ochen. N. J. loseph, Albert Pottery, Box 563. Chamblee. Ga. alii, Stephen L. fS), 54 W. Fifth St, Corning, N._ Y. tion, J. Mark. U. S. Tariff Commission. Eighth 4 E Sts, , Washington. D. C. jr, D. F,`T 1716 Market Ave. N, Canton 4, Ohio eht. Russel 0., Box 166. 3amhart. Mo. Ronald H,, "Ferrum" Espana 401-600. Avellaneda, nos .Aires. Argentina Charles E, 407 W. Broadway, Sedalia. Mo. j. Carl-Axel i S), Box 66, Alfred. N. Y. nder, A. E, Tiffany & Co, Fifth Ave. & a/th St, New 22, N. Y. pder. Fred. 507 Whippo St, New Castle. Pa. Jder. John A.. 1909 20th St, Parkersburg, W. Va. der, John B, Southwestern Portland Cement Co, Ave, Osborn. Ohio der. John M. (S). Box BB. Alfred. N. Y. ^der, R. H, National Tile 4 Mfg. Co, .Anderson. Ind. D. C, Mullite Refractories Co, Shelton, Conn. ?err-.s, R. R. 1, New Hope. Pa. Ubert W. (S), 4412 Paris Ave, New Orleans. La. Alfred W, Ceramic Engr. Dept, Univ. of Illinois, 111. dorace E.. 2248 Parkwood Ave.. Toledo 10, Ohio }amci R, 10] Lincoln Ave, Wilmington, Del. ewis MA fS), 326-C Westview Court Apt, Mahaley Salisbury. N. C. No. 10 (1050) Allen. Ralph D, 753 E. Third Ave, Monmouth, III. Allen, Ricnard LA -J), 1101 W. Main St, Norristown, Pa. Allen. Robert G., Robert G. Allen Co, Box 110, Mechanicville. N. V. Alliance Ware. Lid. i R. E. Strain), 1590 Powell St, Van couver. B. C,, Canada Alliegro. Richard .A. tS), 32 Nassau Ave, Malverue. N. Y. Allis. Deo, Jr, Libbey-Owcns-Ford Glass Co, Charleston, W. Va. Allison. Adrian G, 2135-A 35th St, Los Alamos, N`. Mex. Allison, LeRoy W, Ceramics Publishing Co, Inc, Box 173. Newark, N. J. Allor, Allen M. fS), 1135 Benjamin Ave, S. E. Grand Rapids. Mich. Allshousc. Charles C, R. R. 1. Avonmore, Pa. Allshouse. Homer J, 303 Fourth Ave, Derry, Pa. Alspaclt. L. Dean t J l, 124.) Cleveland Ave, West Lawn. Pa. Alsup, George W,, Box 596. Jena. La. Alt, Leslie R,' 547 Simon St, Hayward. Calif. Alton Brick Co. ( Eben Rodgers, jr.!. .Alton. 111. Aluminum Co. of America -J. R. Eckleyi, 301 Guit Bide, Pittsburgh 19. Pa. Amberg, Charles R,*T Alfred University Research Lab, Box 212B. Kingston. N. Y. Ambrose. Mary 5, 515 Eighth 5t,, New Brighton. Pa. Ambrosonc. Joseph ?, 170 Reynolds Ave, Corning, N. Y. American Clay Forming Co. (Ross Sioneri, Tiffin. Ohio American Colloid Co. - Paul Bechtnert. Merchandise Mart Plaza. Chicago i!. III. American Encaustic Tiling Co, Inc. (Robert A. Williams. Jr.). Ninth St. 4 Kenilworth Ave, Lonsdale. Pa. American Gaa Assn. (C. G. Segelen, 420 Lexington Ave, New York 17, N. Y. American Lava Corp. (Paul J. Kruesi), Chattanooga 5. Tcntr. American Mepneline. Ltd. (H. R. Deeth), Lakerieid. Out, Canada American Optical Co. (A. H. Bennett), Research Lab, Box 137. Stamford. Conn. American Porcelain Enamel Co. I Robert Long), 1235 Keating Ave, Muskegon 36. Mich. American Potash A Chemical Corp. (R. M. Curts), 122-E. 42nd St, New York 17, N. Y. American Radiator ic Standard Sanitary Corp. (James S. Goodman!, 1541 S. Seventh St, Loutsvtile 8. Ky. American Refractories Institute. 1872 Railway Exchange - Bldg, St. Louis I. Mo. American Smelting A Refining Co. (L. G. Matthews), 120 Broadway, New York 5, N. Y. American Stove Co, 1641 S. Kingshignway, St. Louis 10. Mo. American Window Glaas Co. (A. S. Crandon), 16th Floor, Farmers Bank Bldg, Pittsburgh 22, Pa. Amero, John J, 99 Lake Ave, Worcester, Mass. Ames, R. N.f (J), 10352 S. Wood St, Chicago 43, IU. Amin, Chandubhai G. (S). 2250 Rosewood,. Toledo 6, Ohio Amin. R. B, Alembic Chemical Works Co. Ltd, Baroda. India Ammerman, J. H,? 1656 Elberon Ave, E. Cleveland 12. Ohio Ammon. Millard G, Ferro Enamel Corp, 4150 E. 56th 5t, Cleveland. 5, Ohio Amsler Morton Corp. (P. M. Orfill), Chamber of Commerce Bldg, Pittsburgh 19, Pa. Anchor Hocking Glass Corp. (VV. V. Fisher), Lancaster. Ohio Ancizar-Sordo. Jorge. Laboratorio Quimico Nacional. Minis- terio de Minas y Petroleos. Apt. 2577, Bogota, Colombia Anderson, Harry L,,r Reoublic Steel Corp, Warren. Ohio .Anderson. Herbert H. (S), Graduate House 422. Massachu setts Institute of Technology, Cambridge 39, Mass. 355 B(a:r, Ljurence K.. o Cooper .\vc., Franklin Tw|i., Xew Brunswick. Nr. J. Blair, Marion W,* 2131 S. Center it.. Terre Haute. 1ml. Blake. A. E, ~3 Park Ave, West Caldweil. .V. J. 31ake. Edwin M, Box 210. Mount Kisco. X. V. Blake. William V,t Macklin Co.. Jackson. Mich. 31anchard. M. Kenneth. A. 0. Smith Corp, 3533 X. 37th St.. Milwaukee I. Wis. 3!ar.d. Edward J, -13 McArthur Dr.. Ford's. N. J. Blank, j ante: 5. i ST, 433 W. Pittsburgh St.. Creensburg. Pa. Blankenship. Clinton L. i,S>, oo9 Kennesaw Ave.. N.E.. At lanta. Ca. Blau. Henry H," Federal Class Co.. E. Inms Ave.. Columbus 7, Ohio Blaavs, Alexander. 323 Bellevue Ave.. Trenton 8. N. J. Blenko, W. H., Blenko Glass Co.. Inc., Milton, \\. \ a. Blessing. Rohert Lee/ 1720 Bor.eta Ave.. Richmond Heights 17. Mo. ,, , . ,,. Blewett, J. 3,' McLain Fire Brick Co., Wellsville. Ohio Bliss. L. G.. Foote Mineral Co.. 18 W. Chelten Ave., Phil adelphia 44. Pa. 31odgetr. Malcolm. 6o0 Main St.. Woburn, Mass. Blodgett. William E. <S), 18 Mis'nawum Rd.. Woburn. Mass. Blohm. Richard E. I.S), 1331 McKinley Ave., San Antonio. Texas Bloome, Robert L. (S). South Standard, 111. Bloor. C. A., Universal Clay Products Co.. Sandusky, Ohio B'.oore. Robert B, S.vmnertons Ltd.. Hanley, Stoke-on-Trent. England Blount. Bruce, Box 317, Hondo, Texas ^ 31ue Ridge Glass Corp. (J. H. Lewis). Kingsport. Tenn. _ Blum, Seymour! (J), 321 \V. 103rd St.. N'ew hork 25, X. Blume. Arthur J.,t J23 N. High St.. Lancaster. Ohio Elumenthal. George,! Golding Keene Co.. Box 2151, Trenton. N. J. Blunt. Rpyijen A," Buck Glass Co.. Fort Ave. Sc Lawrence St.. Baltimore 30. Md. Blythe Colour Works, Ltd, Cresswelt. Stoke-on-Trent, Eng land Bobo. Charles D. (S), 221 Fourth St., N'. \V,, Atlanta, Ga. Bobrowsky, A. R.. 1435 Enfield Court. Willow Run. Mich. Boder. W. D.. Boder Scientific Co., 719 Liberty Ave, Pitts burgh 22. Pa. Boeker. V. W,` Owens-Coming Fiberglas Carp, lo E. :oth St.. Slew York. X. Y. Boettrter. Hugh E. (.SI, 4310 X. Richmond St, Chicago 18. III. Bogatay. Paul. 45 \V. Weisheimer Rd, Columbus 2. Ohio Bognar. Edwin J,* Bognar & Co, Inc, 2041 Oliver Bldg, Pittsburgh 22, Pa. Bohn. Edward L, Chas. Taylor Sons Co, Box 53, Annex Sta, Cincinnati 14, Ohio Boie. George A,* Engr. Experiment Sta, Ohio State Univ, Columbus 10. Ohio Bollinger. Robert H, :'.9 Livingston Ave, Xew Brunswick. X. J. Boistad. Mervyn G. fj), Caledonia. Ont, Canada Boiton. Harry L, Philadelphia Quart! Co, Public Ledger Bldg, Independence Square. Philadelphia 6. Pa. Bolr. Leonard H, National Bureau oi Standards, Div. 9, Washington 25, D. C. Bonebrake. Howard P, Aluminum Co. of America, 1500 Mississippi Valley Trust Bldg, St. Louis. Mo. 3ongbovanni, John C,, Park Blvd, East Liverpool, Ohio 3oniias. Paul A, 5023 Eighth Ave, N.E, Seattle 5, Wash. Bonk. John A. (S). 1902 Slyrtle St, Scranton. Pa. Bonn. George S,, Northwestern Technological Inst, Evans ton. III. Bonner, Don B, 2149 E. 37th St, Los Angeles 11, Calif. Bonnot Co. (B. T. Bonnot), Canton. Ohio Bonnot. B. T,* The Bonnot Co, Canton. Ohio _ Booth, John F, Hailehead Hall. Penistone, Schefneld. York. England Booth. Seaver H, 40 Franklin St, Ansonia. Conn. Booze. M. C,*T Charles Taylor Sons Co, Box 58, Annex Sta, Cincinnati, Ohio Booze. Richard \V, 130 Stanley Ave, Park Ridge. 111. Bopp, Harold F,` 67 Gorton St, Coming. X. Y. Boros, John, 1140 E. Jackson St, Long Beach 5, Calif. Bosch. F. M, 22 Plateaustraat. Ghent. Belgium Bosler. Krell, John Douglas Co, Cincinnati 16. Ohio Botiield Refractories Co. (George 3. Botrieid), Swanson Sc Clymer Sts, Philadelphia 47. Pa. Botrieid. George 8, Botrieid Refractories, Swanson Jc Clymer Sts, Philadelphia 47, Pa. Boultbee. Donald (S), c/o G. S. Whittemore. Pine Grove, . Bristol, Pa. Bovee. Benedict A, 220 74th St, Niagara Falls, X. Y. Bovee. Frances E, 220 74th St, Niagara Falls. N. Y. 358 Bme:i. 1. -t3iii<:v. .'.Micricji) I.e.vi Pencil Co., Hoboken. X. J. Bower, James A, r rsi it, Chester. \V. \ a. Bowers, Donald , 3092 Euclid Hts. Bird, Cleveland. Ohio Bowes. Urban ,* Owens-Illinois Glass Co, Toieda. Ohio Bowmar, Donald C, 657 Linden Ave, Apt. 1. Wes: Elgin. m. Bowman. Eugene D. <Si. 1113 E. Rich St, Columbus. Ohio Bowmar, ; r.n G, 341 3. Juliana St, Bedford. Pa. Bowman. Martin E, 5544 Pershing Ave, Apt. 210, St. Louis 12. Mo. Bosvr.c. Martin SLee Clay Products Co, Clearfield. Ky. Boyce. David O, Karker Pottery Co, East Liverpool. Ohio Boyce. Robert E, Hlrker Pottery Co, East Liverpool, Ohio Bovd. Frank H, 5. G. Frantz Co, 1 tic. Box 1133, Trenton. X. J., Boyd. G. M..' Locke. Inc, Box ;7. Baltimore 3. Md. Boyd. John E,,r L'nited Feldspar A Minerals Corp, Box M,, Spruce Pine. X. C. Boyd. Robert C," American Radiator A Standard Sanitary Corp, 15-41 S. Seventh St, Louisville 3. Ky. Boyles. John p,, 301 E. Wallace .Ave, New Castle. Pa. Boynton. Claudia G, 7040 Yale Ave, Chicago 21. III. Boynton. Robert 5, National Lime Assn, 925 15th St. N-W, Washington 5. D. C. Boysen. Peter. Cristalerias Papir.i. Chacabuco 646, Buenos Aires. Argentina ___ Bozzo. J. G, Pierce Glass Ctj, Port Allegany. Pa. 3rackbill.'Charles E,, 3895 X. Front St, Harrisburgh. Pa. Bradiord. Caroiyn (Si. Russellville. Ala. Bradley, Alan I-- Refractory Brick Co. oi England, Ltd, Steetley. Worksop, Notts. England Bradley, Charles A, Jr, 21 E. Fourth St, Corning, X. Y. Bradley, James P, Bradley Mining Co, 425 Crocker Bldg, Sari Francisco 4. Calii. Bradley, John R. (S), 46 Maple St, Hornell. X. Y. Bradley, Richard S ." 4 Park Circle. Mexico. Mo. Bradwell. Cyril,* Parkhursi Apts. 23. Barbara Sc Marion Sts, Bethlehem. Pa. Brady, Charles ?, 5505 Lewis Ave, Long Beach, Calif. Brady. John G, 1227 lath St. E,, Saskatoon, Sask, Canada Bradv. T. , Surface Combustion Corp, 2375 Dorr St, Toledo. Ohio Brain. Douglas G, I960 Jane St, R. R. 2. Weston. Ont, Canada Bramlet*, William P, Jr,r '.pt. (. Bldg. 7, Arlene Village. Millville. X. J. Brandow. Glen A, 69 W. Gibson St, Canandaigua. X. Y. Branct. Donald K. i S'i. Box 694. Friiey Hall. Ames. Iowa Brandt. Kristian H,, Box 212. Red Bank. X. J. Brandt. Neiil M, Mellon Institute. 440 Fiith Ave, Pittsburgh. Pa. Brar.rit. William O,** Gladding McBean A Co, 2901 Los Feliz Blvd, Los Angeles 26. Caiif. Brant. David G," Universai-Rur.dle Corp, Box 200, Red lands. Calif. Brant. Robert M." <JL 98 Beach View Rd, Willoughby. Ohio Brashares, C. A, 503 Protective Life 3ldg, Birmingham 3. Ala. Brassneid. Henry C, 209 Villanova Rd, Oak Ridge. Tenn. Brauckman. Alvin J. (S). 3 Kern Ramble. Austin. Texas Brian Corp. (J. G. Stewart), 2260 E. 15th St, Los Angeles 21. Calif. Braun. Julius, 300 X. Canal St, Chicago.6. III. Braykovich. Andrew. Box 48, West Pittsburgh. Pa. Brayton. Durlin E,, Box 697, Laguna Beach, Calif. Brazee. Erland. E'.ektriska Svetsnings A/B. Gothenburg. Sweden Breckenridge. Tames M,, 2001 Capers Ave, Nashville 4. Tenn. Breckon. Haldred C. (S), Box 161. Lewiston. X. Y. Breedlove. James G. (S), American Lava Corp, Chattanooga. Tenn. Breeman. Leonard. Jr,! Box 425. Bedford. Vs. Breene. George A, Industrial Colloids Co, Emlenton. Pa. Breeze. Lewis K, 1432 E. 260lh St, Euclid 17, Ohio Breitwieser. Robert H, 420 E. 16th Ave, Apt. 2, Denver. Col. Brekke. Trygve. Box 266. Stavanger, Norway Brennan. 3. T, Chisholm. Boyd Sc White Co, 610 W. 57th St, Chicago 21. 111. Brenner. Harold M, B. F. Drakenfeld Sc Co, Inc., Wash ington. Pa. Brenner, R. F,,* Anchor Hocking Glass Co., Lancaster. Ohio Bretz, Lewis A, 267 Arden Rd, Pittsburgh 16, Pa. Brewer. 3ob. Mineral Wells Clay Products Co, Mineral Wells. Texas Brewster, Gordon F,, East Williamson. X. Y. Brewster. H. M, Box 145, Glenview, 111. Brian. Charles. Paper Makers Importing Co, Inc, 44 S. Second St, Easton. Pa. Brian. Dick, 422 Florida Ave, Chester, W. Va. Ceramic Bulletin Brian. 5. Douglas. Paper Makers Importing Co., Inc.. 44 S. Second it., Easton. Pa. 3rtckhouse. Robert E.: (J), Bux 5-1J. Sanford, N. C. 3righam, Ralph V.. Jr. (Si, luo S. Main Si.. Almond. N". V. Bristowi R. H. (Si, 1353 S. Higii St.. Columbus, Ohio 3rltchcr. (jortion. 50o Berkeley Dr., Syracuse 10. N. V. 3ri::sh Ceramic Society, North Staffordshire Technical Col lege. Stcke-on-Trent, England 3rack'jtay Glass Co., Inc. i F. B. Hess), Brockway, Pa. 3rouie. William T. R. R. 5. Kitiatiitig. Pa. 3rooke, Stanley. Ougntibridge Silica Firebrick Co., Ltd.. Oughtibridge, Sheffield. England Brooks. Robert H. (Si, 160 S. Jlst St., Apt. 2-E. Richmond. Calil. Bronnthall. Vincent,* Continental Kilns, Inc., Box 755, East Liverpool, Ohio Brosius. John P.. ~0i Emerson Ave., Aspimvail. Pittsburgh 15. Pa. Brown. Coiin C. iS), 21 Mcuhury Ave., Cuba, N\ V. 3rown. Donovan P.. Box 625. Detroit 51. Mich. Brown. Dwight R. (Si. 55 Roe Blvd.. Patchogue. N. Y. Brown. F. O., Dunbar Class Corp.. Dunbar, W. Va. Enwn^ George R., North American Mfg. Co., 4455 E. 71st it.. Cleveland 5. Ohio Brown. John J., Jr.,' Carolina Home. Hendersonville. N. C. Erown. Joseph A.. Baltimore Brick Co.. 5200 E. Madison 5l., Baltimore 5. Md. Brown. Lawrence H..*T Box 652. East Liverpool. Ohio Brown. Leslie, Lenox Inc.. Trenton 5. N. J. Brown. Raymond G.. Comstock 4 Wescott, Inc., Box 855. Niagara Falls. N. V. Brown. Raymond J. I SI, 6941 W. Jlst St.. Berwyn, III. Erown. Roy W., 260 Myrtle Ave., Irvington, N. J. Erown, Victoria. San Francisco Art Assn.. 800 Chestnut St., San Francisco II. Calii. Erown. Wilbur F..* Libbey-Owens-Ford Glass Co.. Rossford, Ohio Brown. William E. <ii, School ol Ceramics, Rutgers Uni versity. New Brunswick. N. J. Browne. I. Elmore. 195 Wavne Dr.. R. R. I, New Kensington. Pa. 3rowr.e. Thomas C. , S), 605 Maple St.. Roila. Mo. Brownell. Wayne E.. 126 Hornell St.. Hornell. N. Y. Browneweii, George E.. 150 Mercer St., Apt. 16B. Somerville. n. Bruce. Charles F., .'0; North Ave., Wilkinsburg, Pittsburgh 21. Pa. . Erueggerhoff. Ckaries (Si, Club Americano, Rosita. Codhuiia. Mexico Brunner, Cedric D.. Locke. Inc.. Box 57, Baltimore 5. Md. Brunning. Ernest J.. Consumers Glass Co., Ltd., 3ox 210. Sta. B. Montreal. Que . Canada Bruno. Lucien V. (J). Federal Seaboard Terra Cotta Corp., Perth Amboy. N. J. Brush. George D.,t 55 E. Gay St.. Rm. 415. Columbus 15, Ohio Brush. George N., 2099 Guilford Rd,, Upper Arlington, Ohio Brusse, William. Jr. (SI, 656 Yorkshire Rd., N.E., Atlanta. Ga. Erutcher. Henry E.. Box 157, Altadena, Calif. Bryant. Albert D., Standard Silica Corp.. Box 407, Ottawa, Ml. Bryant. Eugene E.." 75 Cresswell, Bedford. Ohio Buchan. M. A. (S). 717 E. Monroe, Mexico, Mo. Buchecker, Edgar. Bellerivestrasse 51. Luzern. Switzerland Buchholz. Russell A.. Harbison-Walker Refractories Co.. 1505 Rockefeller Bldg., Cleveland 15, Ohio Back Glass Co. (R. A. Blunt), Fort Ave. 8c Lawrence St.. Baltimore 50, Md. Buck. Ivan E.. Jr.. University of Texas. Dept, of Ceramic Engineering. Austin. Texas Buckles. Paul E.,r 45 Minerva St.. Tiffin, Ohio Buckner. 0. S./ Bay State Abrasive Products Co.. Westboro, Mass. Buehler. 3ert P., Chicago Retort 4 Firebrick Co.. Ottawa. III. Buessem, W. R., School of Mineral Industries, State College, Pa. BaSslo Pottery, Inc. (R. E. Gould), 25 Hayes Place, Buffalo _ 10. N. Y. Buktas. Bulent, The Siimcrbank. Ankara, Turkey Bullard. Edward R.. B. F. Drakenteld 4 Co., Inc., Washing ton. Pal. Bunce. E. H., Technical Dept., Mew Jersey Zinc Co., Palmer- ton. Pa. unge, Fred H., 452 Homestead Rd.. La Grange Park, III. aratti. Ralph J.. R. R. 4, Black River Rd.. Bethlehem, Pa. urch. Oscar G.,* Owens-Illinois Glass Co., Box 1055. Toledo 1. Ohio ol. `20. Mo. 10 (1950) Burchcttal. Charles H . Cambridge Tile M :g. Co., Box "t Cincinnati 15. Gluo Burchtiel. 3. M.." Box 454. Elsinore. Caiif. Burchfield. Paul E.. Wyandotte Lhemicai C.rn.. Wyatt.;..jo. Micit. Burilick. Milter. D.' Porcelain 4 ?.tilery Section, Nati, Bureau >: Standards. Waltingti it 25. D. C. Burthck. Sidney I). a iicileau St.. Corning. N. Y. Burg, Waller University of Toledo. Toledo 5. Ohio Burgess. Biaudijrd CAppalacitiatt Miitera.s Co., Box j-.'l, Montic.ll. . Ga. Burgtier. Arthur J.. Canadian Potteries. Ltd.. S:. John*, (juc . Canada Burgunder. Rafael. Cerantica !nd. "E: Aguila" S. A., Morelos 51. Desp. 204. Mexico. D.F.. Mexico Burke. L. Roger, 1295 Peopies Bank Bldg., Pittsburgh 22. pa. Burkhalter. Edward.' 7219 Interiaakcti Dr.. Tacoma 9. Wash. Burks. Cecil M.. Jr. (Si. Box tool. Virginia i ech. Station. Blacksburg. Va. Burley. Frank N.. 520 W. Ricketts St.. Kokomo, tr.il. Burley. Newton R.. 1864 Dresden Rd.. Zanesville. Chin Burlingame. Howard C.. California Metal Enameling Co.. 6904 E. Slausoh Ave.. Lus Angeles 22. Caiif. Burnand. Guy M. (Life), Messrs. Johnson, Matthey 4 Co. .Ltd.. 73. Hatton Garden, London K. C. I, England Burnett. W. A.. Calicut. Malabar. S. India Burnham. Forrest E.. Box 672. East Liverpool. Ohio Burns, Frederick L.. R. R. 1. Sonora. Ohio Burns. Henry K.. Jr., 1620 Waverlaud Dr.. Macon. Ga. Burriss. William K.. 5017 Drexel Blvd., Chicago 15, III. Burroughs. F. H.. 3ox 1529. Trenton 7, M. J. ^ 3urrows, Fremont O. (Si. 1423 Washington Ave.. Chehaiis, Wash. Burrows. O. Mason, Highland Ave.. Holden. Mass. Burst. JoltnJF. (S), Shell Research Lah.. 5757 Bellair: Blvd., Houston, texas Burt. N. P. 4C0 Fifth Ave.. Leavenworth. Kansas Burt. Roland C./ -4)21 Plumstead Ave.. Drexel Hill. Pa. Burton. David R.. Vidrieria Argentina S. A.. Llavailol F.C.- M.G.R.. Buenos Aires. Argentina Burton. Howard 3.. Jr., lolS Arlington Ave., St. Paul 6, Minn. Burton. W. A.. 305 E. Fourth St.. Mt. Pleasant. Texas Burwtnkei. Lawrence G., Jr., Pennsylvania Pulverizing c ... 2509 First Naiionai Bank Bldg., Pittsburgh. Pa. Bush. Edward A. t S. Sigma Phi Gamma. State Coiieg*. Pi. Bush. James W..' 2551 Brownsville Rd.. Pittsburgh 19, pa. Bush. Ralph R.. Bonnot Co.. Canton 2, Ohio Bushong. R. M.. Naiionai Carbon Co., Tiffin 4 Town Sts.. Fostorta. Ohio Busteed. Outlaid J. (S). 77 South St.. Westboro. Mass. Batcher. L. Ha Co,, 2628 E. Olympic Blvt;., Lei Ar.geles JJ. Calif. Butcher. William T.. "Woodgarth." Stamford Brock Ave., London W. 6. tangland Butchkn. Thomas J.. 422 Earl Ave., Arnold. Pa. Butkovicit. Edward M. (Si, 9COO Buttalo Ave., Chicago 17 III. Butler. C. Edward. Jr..' 4460 M. Bartlett Ave., Shoretvood, Milwaukee. Wis. Butler, F. W., Akron Porcelain Co., Akron 14, Ohio Butler. John, R. R. 1. Malvern. Pa. Butler, Mike \V,, Elgin-Butler Brick Co.. 1208 Congress Ave.. Austin. Texas Butler. Thomas J., Jr.. Box 279 Austin 2. Texas Buttle. Robert L.. 490 Carr St.. R. R. 3. Box 515, Lakewood Coi. Buzard. Fred T. 3ell it.. Plymouth, Ohio Bycroft. Howard. 222 W. C:ark_ St., East Palestine. Ohio Byrtis. Alva C.. Chemical Div.. Kaiser Aluminum 4 Chemical Corp.. 1924 Broadway, Oakland 12. Calif. C Cable. Joint A.. 1209 21st St.. M.E.. Canton. Ohio Cable. Margaret.* 7575 Valaho Dr.,' Tajunga, Calif. Cada, Barbara F.. 4753 S. Throop St.. Chicago 9. III. Cahoon, G. J./ Knox Porcelain Corp.. Knoxville 11. Tenn. Cahnon. Harold P. (S). 1555 E. 5550 South, Salt Lake City, Utah Cahoon. John B.. Jr./ 2920 N. 47th St.. Phoenix. Ariz. Cain. Maxwell M. (S), Box 552. University, Ala. Caine. F. W.. Brittains Bricks 4 Pipes Pty., Ltd., Darra, Brisbane, Queensland. Australia Caito, A. M.. Basic Refractories. InCa Maple Grove. Ohio Cala. Charles F.. 144 Hoover Rd.. Rochester 5. M. Y. Calderwood. F. Wayne. 660 Pammel Court. Ames. Iowa Caldwell. Smiley, Jr., Rolland Glass Co., Clarksburg, W. Va. 359 Caldwcii. Riam L)..r Perfection bime Cm.. 1.55 Ivanin.e Rd.. Cleveland. Ohio C 3. LI a i31:. H D C. S. Quarry Tile Cm.. East Snarta. Ol>in Callahan. .cert M, 51-1 E. Chestnut St.. Wasiiuig-.nii. Pa. Callinan. Ztv.ard E..*' Standard Steel Murk, Div . Baldwin Locomotive Murk-. Buruitani. Pa. Cambridge Glass Co.. Cambridge. Ohm Cameron. A. C, Xurth Ea.-i Eire 3rtck Cm., North Hast, MJ. Cjmerun. avbr.'i A.. Box IDS. Cmmini,', N. V. Campbell. C V , 5095 W. Fiillt St.. Brooklyn Heights, Oltin Campbell. Edward S.. Northwestern Glass Co.. 5201 E. Mar ginal Wav. Seattle 4. Wash. Campbell. C. Donald, Pittsburgh Plate Glass Co.. Clarksburg. VV. Va. Campbell. Ian, California Institute of Technology. Pasadena 4. Calif. Campbell. R. A, (J). The Lodge. Kiimar, Que, Canada Campbell. Robert M,*t Alired. Nr. Y. Campbell. : ont W, Box 255. Poland, Ohio Campbell. Van E.. odd Highland Ave, Wadsworth. Ohio Canadian Ceramic Society. Miss L. C. Keith, 49 Turner Rd., Toronto 10. Ont.. Canada Canfieid. J. 2909 Orlando Dr., Middletown 20. Ohio Canrieid. Ruth. Barney Bldg., New Vork University, 9th & Stuyvesatt: Sts.. New York J. N. Y. Canning. Robert. Fox Chapel Rd.. R. R. 2. Pittsburgh 15, Pa. Cantweil: Thomas M. (SI; 1027 Sunset Ave.. Zanesville. Ohio Capelimar.. John J, 1113 Highland St.. Tarentum I, Pa. Capps, Hubert iS'i. 1108 W. Third St.. Cotfe-ville, Kan. Capps. Webster, 5508 35th St.. N.W, Washington 16, D. C. Carborundum. Co. iH. C. Martini. Niagara Falls. Nr. Y. Carder. Frederick* (Honorary). Steuben Div., Corning Glass Works. Corning. N. Y. Carey. Eve. 303 26th Ave.. Santa Cruz. Calif. Carey, J. Sheldon. Dept, of Design, University of Kansas. Lawrence. Kan. Carl. John IS). Box 434. Hammondsporr, N. Y. Carle. Erwin J. (S). 601 Elmwood. Austin, Texas Carlen. Solve. 3olidens Gruvaktiebolag, Centrallaboratoriet. Skelleftennanin. Sweden Carlson. C. W.. United States Glass Co.. Timn 15. Ohio Carlson. Joseph A., 50 Hawthorne St.. San Francisco 5. Calif. Carlson._ Robert H. (J), Universal-Rqndle Corp.. Box 960, .New Ca = tie. Pa. Carlson. William G. (S). Box 17. Alfred. N. V. Carlyle. Edward C.. Box 123. Ironton. Ohio Carnahan. . homas (St. 958 River Rd., Beaver, Pa. Carnegie-IUtcoii Steel Corp. (J. C. Eckel). 922 Carnegie Blcg.. Pittsburgh 50. Pa. Carnes. Kenneth C, 2643 Wesleyan Drive. Toledo 9. Ohio Carr.es. rranur! J.. Camark pottery Co.. Camden. Ark. Caro. Robert. Hedi Schoop Art Creations. Box 384. North Hollywood. Calif. CirotrtTT-. Karrv 5.. H. C. Spinks City Co., I BOO First Na tional 3ar.k 3ldg,, Cincinnati 2. Ohio Car.other". R. 2..* H. C Spinks Clay Co., Inc.. Box 329, Paris. Tenn. Carothers. Richard B.. Jr., Box 329. Paris. Tenn. Carothers. T. E.. 743 Arcadia Ave.. Arcadia. Calif. Carr-Lowrev Glass Co. i Norman R. 3eck), Box 356. Balti more 5, Md. Carroll. Joseph. Physics Dept.. Marnuette University, 1131 VV. Wisconsin Ave.. Milwaukee 3. Wis. Carroll. William F. (S), 2030 Monte Vista. Pasadena 3. Calif. Carruthers. John L.,*) Lord Hail, Ohio State L'niv, Columbus 10. Ohio Carter. F B.T Timn 12. Ohio Carter. Herbert D..** 3351 Dorchester Rd.. Shaker Heights 20. Ohio Carter. Wilber A.. Detroit Edison Co.. 2000 Second Ave.. Detroit 26. Mich. Carter. Wiilard K.. Box 154. Columbus, Ohio Casamo. Charles C,, Sylvania Electric Products, Inc., Em porium. Pa. Case. V. B.. Paner Makers Importing Co., Inc.. 44 S. Second St., taston. Pa. Cise, W. A, it Son Mfg. Co. (Willard G. Young), Robinson, Casner. John R.. Jr., Cock Mlg. Co., 4362 E. Pomona Blvd.. Wainut. Calif. Castanv. Charles L (S), Box 1664, University Sta., Austin 12. Texas . Cather. Helen F, Box 2372. Laguna Beach, Calif. Caton. Albert J.. Jr.. Box 116. Reno. Nev. Caton. Milton W., 22490 Nevada Ave.. East Detroit, Mich. Cavanaugh. D. J.,1 822 32nd St.. Parkersburg, VV. Va. Cawood, Richard I_ East Liverpool, Ohio Cayford. James M.T Glascote Products, Inc., 20900 St. Clair Ave.. Cleveland 17. Ohio 360 Cecil. Paul p , cl.- Y. . t.*ii:., pehruiLt. Ohio Central Silica Ca. 'E. C. Sawyer'. Zunesviile. Oiim Ceramic AsSti. ii Japan, Yugy.j Ky.kwai. No. 12 Niba'iiy., Tiyoiiaku. Tnkyn, Japan Ceramic Color 2c Chemical Mfj. Co. F. eitntr.g i. Bi.x 297. New Srigntoii ?a. Ccrmak. Frank." 1 542 L'nii.r. St. Schenectady S. N. Y. Ccrniak. Kenneth W . 215 Rankin Ave. Schenectady N. V. Ceriiv. Jon-pii J . 522*-28 W. 2a:h St.. Chicago 59, III. Chahliai. '> S. ;S-. yy E. Healey St.. Champaign, 111. C!iadeyr".i. A.. A.. G. Clevcianu Magnesite w Refractory C,,.. Ltd., Nurinar.by E r-.ckwurk s. Nunnanby, Middlesbrough, York. England Chance. Clare S, 621 N. Painter Ave., Whittier. Calif. Chamberlain. Janies M. W,, Box 350. Akron 9, Ohio Chamber-. Cordon H, 13 W. C.ielten Ave.. Philadelphia 44. Pa. Chamber.-. J. Fred. National Gypsum Co.. Lackey. (Ohio Champion Spark Plug Co.. Ceramic Div. t Frank H. Riddle), 3525 Butler Ave.. Detrun U. Mich. Chandler. Keith, H. C. Spinks Clay Cm, First National Bank 31dg., Cincinnati 2. Ohio Chang. H. C. The Yau Hua Glass Co., Ltd.. 19 Ta Tung Rd.. Tientsin. China Chantler. L. W,, Standard Lime & Stone Cu., Millviile, W. Va. Chapman. John B. l.S), 31/ Simms 5t.. Philadelphia 16, Pa. Charbonnier. William P, NValsit Refractories Corp., 101 Ferry St.. St. Louts 7. ,\lo. Charland. Telesphore L. (S), 630 Bancroft St., Apt. 2. Dei Moines. Iowa Charman. Waiter M.. Ferro Engineering Cm.. 1298 Hanna Bldg.. Cleveland 15. Ohio Chase. Dana. 360 N. Michigan Ave, Chicago 1. III. Chattanooga Glass Co. (Joe G. Venablel, Chattanooga 10, Tenn. Chaumeil. Frederic. Verreries de Bagneaux et Appert rerres. Bagneaux s/Loing, Seine et Marne. France Cheema. L. S. t.S). o05 E. Healey St.. Champaign. III. Chesler, lsidor, 710 E. 14th tat.. New A ork 9. N. 6. Chester. A. E.. Promat Div., Poor & Co.. 851 5.'Market St, Waukegan. 111. Chesters. John H.. United Steei Co.. Ltd., Research i De velopment Dept.. `Swir.den H"use.' Moorgate. Rothernam, York. England Chicago Hardware Foundry Co. (Robert J. Young), North Chicago. III. Chicago Pottery Ca. fj. S. Clifford). 1920 Ciybourn A.ve, Chicago i4. III. Chicago Retort it Fire Brick Ca. (Charles 5. Reed. Jr.). 203 S. La Salle St.. Chicago 4. III. Chicago Vitrsous Eaame: Product Co. (William Hegemon), 1427 S. :5th Court. Cicero 50. 111. Oiilcote. Inseph K, 1907 16th St.. Arlington. Va. Child. I. L, Hancock 3rick Tiie Co.. Box 59, Fir.dlav. Ohio Child. J. Leo, Hancock Brick A Tile Co, Box 59. Findlay. Ohio Childs. Edwin E., Jr. (S). Box 2714 Virginia Tech. Sta, Blacksburg, Va. . Childs. H. W.. United Feldspar & Minerals Corp, West Paris, Me. Chiaholm. Boyd A White Co. (B. T. Brennan), olO U. ;/th St, Chicago 21. III. Chiu. Hung-Wen ;St. Box 239, Alired. N. V. Chormanii. O. I, 195 Gregory Hill Rd, Rucliester. N. Y. Chotliia. B. S. (J). Wadia Bldg, 137 Queen's Rd, Bombay, India Christensen. Cari J, College of Mines & Mineral Industries, Univ. of Utah. Sait Lake City. Utah Christensen. Cnr, Den Kotigeiige Porcelainst'abrik A Fa- jancetabriken Aluminia A/S. Smallegade 45. Copenhagen F, Denmark Christie. Leoixard D., Jr., .. S. Beach Ave., Old Greenwicn, Conn. Christman. Brian B, 25 Eggert Ave, Metuchen. N. J. Christman. C. E, Federal Enameling A Stamping Co, Pitts burgh, Pa. Christman. H. M," 1023 Roosevelt. N.E, Massilon. Ohio Chu. Gordon P. K. ( S). Ceramic Dept, State College. Pa. Giun. Lee <S). 230 Prince Edward Rd, Kowloon. Hongkong Chung. Hcung-Sung, Messrs. Vick Lee. 123 3onham Strand j East. Hong Kong. China Chute. Harold VV, 31 N. University St, Redlands. Calif. Cichowski. Val J, Grand Enameling Co, Div. oi Grand j Industries, Inc, 2335 E. 67th St, Cleveland, Ohio j Ciprari, John L. (S). Box 1040, Georgia Institute of Technol- j ogy, Atlanta. Ga. ,,,, Clapham. Charles H,, Jr, 19 Saranac St, Dobbs Ferry, N. Y--I Clapson, William J, Eagle-Picher. Co, Box 290. Joplin. Mo-j Ceramic Bulleti Harr. Rub.rt l. ." 212 Kcc'tur Si. Perth Atr.buy. N. .1. Hark. Alec V.'. Beation. Clark X Co, L:ii., R,ihcrhain. Engiar.i; Hark. C. Burton, M3 DeArment Parkway, Pittsburgh !o, Pa. Hark. Cyril O, VUJJ Scycnc Rd, Dallas, Texas Hark. C. Lj . Jr., N. Clark 2: Suns, Div. oi Pacino Clay Prod uct,. 'jjS .Market St., Rm. lCJI. San Francisco 5. Caiii. Hark. Horace N',, Refractory & Insulation Corp, 130 Wall St.. New \ urk a. N. Y. Hark. Joan D..1 0:6 Lindlev Ril.. Glenside. Pa. Zlark. Keith R. i S', 3094 Neil Ave, Apt. 37. Cjlumbus 1. Ohio Hark. Richard F...r 9IS Lindbergh Ave.. Zanesville, Ohio Hark. Robert M. '.Si, 4j Mill St.. Hornoll. N. V. Hark. Roland J., Precision Grinding Wheel Co., Inc., S301 Torresdaie-Ave.. Philadelphia 36. Pa. Hark. Thaddeus J., 112 S. Main St.. Pennington, N. J. Harke, Edward F, Alvay China. Inc., 924--28 Cherry St.. Philadelphia.. Pa. Harke. Ford ,K,, Philco Corp., Church Rd.. Lansdale. Pa. Tlaus. Karl M,, Lakeside Dr.. Matawan, N'. J. Haycrait Co. (C. Forrest Tetft), Box 366. Columbus 16. Ohio Haypuole. Stewart A. i SI, 37 Clark St., Painted Post, N. Y. Heeves. George A., IS8 High St.. Reading. Mass. Hentens. August, Jr., 704 Deepdene Rd., Baltimore 10. Md. Hemens, Eugene C.,' Cannelton Sewer Pipe Co., Cannelton, Ind. Hemettts. J. A., Shews Glazed Brick Co., Ltd., Darwen, __ Lancashire. England Heveiand Museum oi Art. William M. Milliken, Cleveland 6. Ohio _ Heveiand. , hcodore K, Sixth & Gravson Sts., Berkeley 10, Ca'ii. rieverly. William B.. Carborundum Co.. Ltd.. TrarTord Park. _ Manchester 17. England Hews, Francis H., British Ceramic Research Assn., Mellor __ Laboratories. Hanley, Stoke-on-Trent. England Clifford. J. S, Chicago Pottery Co., 1920 Clybourn Ave.. Chicago 14. III. .lift. Robert E.. Jr.. Cove Rd.. Stonington. Conn. Hine, I. R,, Western Brick Co.. Danville. 111. Hine. Robert W ,r 377 Main St., East Aurora. N. Y. H.ingan, J. R. T., Niles Fire Rrick Co.. 165 E. Park Ave.. Niles. Ohio nose. Piul. P.ox 1033--6. Toledo. Ohio loates. Bill. 900A Lamar Blvd.. Austin. Texas Jocanougher, Robert S., 346 Claremont Ave., Jersey City 5. ,, N. J. H>en. Bernard. Woodbridge Sanitary Pottery Corp., 500 Green St.. Woodbridge. N. J. Hatfeen. Wiiliam W,t 512 Ash wood Ave., R. R. I. Union. N. J. lotfer. L. Wallace. Climax Molybdenum Co.. Langeloth, Pa. Harfin. Wiiliam F.. iS), R. R. 1, Bolivar, N. Y. IcfTmm. Wiiliam N.. Keystone Abrasive Wheel Co.. Carrte- ^gte. ?a. Hagen. Saul, Davidson Brick Co.. 4701 Floral Dr.. Los Ange- _ ies 22. Caiii. Hahen. Aaron. General Delivery. Willamina. Cre. Hahen. Arthur E, Sylvania Electric Products, Tnc.. Cottage Place. Mineoia. N. Y. Hahen. 3emard ij). 935 Boniiant St., Apt. 35, Silver Spring, Md. Hahem M. U, 530 Market St.. Newark 5, N. J. 3olbert. Wiiliam W., Chemical Laboratory Apparatus Div.. _General Electric Co.. 100 Woodlawn Ave.. Pittsrieid. Mass. Hale. G. Percy! Dominion Glass Co., Ltd., Box 190. Montreal, _ Canada Hale. Sanctord S.,"* Titanium Alloy Div.. National Lead Co, _ Box 58. South Amboy. N. I. Haicman. Caruthers A., 113 Cheapside. Lexington. Ky. Haleman. J. C.. 3746 Mapleway Dr., Toledo 14. Ohio woletnan. Robert L..r 467 Dogwood. Park Forest. Chicago ^Heights. III. loleman. Thomas B, 635 Tarbora St., Rocky Mount. N. C. bllin. Robert L. (J). Mellon Institute. Pittsburgh. 14. Pa. bllingnon, Fng. Julio. Loza Fina, S.A., Box 525, Esp. La .Barca v Alamo. Col. Atlas. Guadalajara, Jalisco. Mexico ollins, Paul F,T Austenal Laboratories. Inc., 715 E. 69th Place. Chicago 37. 111. ollins. Robert (S). 205 Orchard St.. East Rutherford. N. J. ollins. William G.A Johns Manville Corp., Waukegan, III. pllyer, P. Wardham. American Optical Co.. Box 137, Stam- lord. Conn. lonial Insulator Co. IR. W. Hemphill). 973 Grant St., Akron II. Ohio slued. George M.. 2459 S. Seneca Ave.. Alliance. Ohio tlmabia Fire Brick Co. i M. L. Hamaker), First National Bank Bldg., Canton 2. Ohio Wille, John H.. c/o L. De l.a Franier. Central Tile Brick Zarp.. d.. Belle River. Ont., Canada >L. 20. No. 10 (19.30) Coiuctor j. J. E.. Box 14;. N.rris. T-:nn. Commercial Decal, Inc., ..Mired Duhrsse:t). East Liverpool. Ohio Commercialores. lac. ( Hettrv S. Doty). 39 Cortlandt St.. New York 7. N. V. Commons. Cttarles H, ,r..*' 33 Holineitursi Ave.. Catonsvillc 28. Md. Compagnucci. Julius P, 118 Kent St.. Trenton. N. J. Companhia Paultsta de Mineracao, S. A. ' Eduardo C. Simon- sertl, Caixa Postal 3C03, Sao Paulo. Brazil Companta Mexicaaa De Retractarios. A. P. Green, S.A. ' H. Fettert. 1 .alr.epamla. Apartado, Postal 33. Mexico Citv, Mexico Conard. Joitn 3 . :03 Woodward Ave., Nlansneld. Ohio Cone. Carroll, 1471 Michigan Ave.. Columbus, Ohio Conklin. Laverne J. (S), 711 N. Lime St.. Lancaster. Pa. Conn. Wiili' M,, Rocknurst College. Kansas City 4. Mo. Connell, George A., 510 W. Sixth St.. Los Angeles 14. Caiii. Connelly, Daniel S, 2801 N. Park Blvd., Cleveland Heights 18. Ohio Conover. Raymond C,t Gladding McBean Si Co.. 2901 Los Feliz Blvd.. Los Angeles 26. Caiii. Conrad. Charles ., jr. (J). Libbey-Owens-Ford Glass Co., 1701 E. Broadway. Toledo 5, Ohio Consolidated Feldspar Corp.. (M. J. McHugh. Jr.), 1403 Trenton Trust Bldg., Trenton 8, N. J. Consolidated Glass Works, Ltd., ll. Donen), Box 562. Ger- ntiston, Transvaal. South Africa Cohstatidinidis, A.. Hellenic Co. oi Chemical Products & Fe. Ltd.. Institute "N. Caneilopouloi," Drapetsona-Piraeus, Greece Constans, Eldon G.. 305 E. 11 th Ave., Apt. 1. Columbus 1. Ohio Consumers Glass Co.. Ltd., i E. J. Brunnittg), Second Ave, Ville St. Pierre. Que., Canada Contardi. William A.. 200 Haywood Ave., Stuart Manor Apt. 5-A. Chattanooga, Tenn. Conway. William S.. Jr.. 48 Downey Dr., Lacey Park. Hat- boro. Pa. Cook Mfg. Co. fEdgar H. Freeman). Box 157. Walnut. Caiii. Cook. Euger.e M.. :09 Broadlawn Terrace, Vineland. N. J. Cook. Mary E.. 5t. Anthony's Hospital. 14S0 Hawthorne, Ave.. Coiumbus 3, Ohio Cook. Herman I...* 1555 Beardsley Ave.. Muskegon, Mich. Cook. Ralph L..* 204 Ceramics Bide.. University oi Illinois, Urbana. III. Cook. W. Howard (S), PHA Dormitory C. 21C0 San Jacinto Blvd.. Austin. Texas Cooke. David C. ;S). 690 E. Welch Ave.. Apt. A., Columbus. Ohio _ _ ___ Cooke. Wiiliam C.. Blue Ridge (ilass Corp., Kingsport. Tenn. Cooper. Roger C, 13951 Raymond St.. Maple Heights. Ohio Cooper. Waiter W, Dow Chemical Co.. Midland. Mich. Cooper. William G., 2716 Eldorado St.. Apt. D.. Torrance. Caiii. Coors Porcelain Ca. i H. W. Ryland). Golden. Col. Copping. J. W.. ppreeiain Div.. Canadian General Electric Co, Ltd.. Park S:.. Peterborough. Oiit,, Canada Corban. Wilbur H, R. R. 2, Calcutta. East Liverpool. Ohio Corbett. Paul M.. Dept, oi Metallurgical Ehgr.. University of Toronto, Toronto. Ont.. Canada Curdes. John E.. 443 Center Rd.. R. R. 2. Conneaut. Ohio Corhart Refractories Co, Inc. (Frederick 5. Thompson), 16th Si Lee Sts, Louisville 10. Ky. Cornelius. Y. R, 12209 Third Ave, N.W, Seattle 77, Wash. 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, 1429 Jefferson. Buffalo 8. N. Y. Corwin. Patricia 3. (J). 4148 N. 38th St.. Phoenix. Ariz. Corwin. Rudolph E. lj), 4148 N. 38th St, Phoenix. Ariz. Coss, H. T,," Jonns-Manville Research Center. Manville. N. J. Cote. A. U, Cooksville Co, Ltd, Cooksvillc. Ont, Canada Cotton. Nigel, Elijah Cotton Ltd, Nelson Pottery, Hanley, Stoke-on-Trent. Stafford. England Cotton. Robert A. (S), Alfred University, Box CC, Alfred, N. Y. Cottrill, Arthur W. (S), 4364 Reading Rd, Cincinnati 29, Ohio Couch. Albert H.A Libbey-Owens-Ford Glass Co, 1701 E. Broadway, Toledo 5. Ohio Coughanour. Leslie W, Bethany College. Bethany. W. Va. Coulter. William G,, Shenango Pottery Co, New Castle. Pa. Counts. William E, 523 E. Kearsley, Flint. Mich. Courier. R. F,, Globar Div, Carborundum Co, Niagara Falls. N. Y. Courtnev, Scott J, B. F. Drakenield Si Co, 45-47 Park Place, New York 7. N. Y. 361 Contain. >ri' i, 121V M. Clair \\e, E.ist Li. crp.mi, Din.# Cu'.'Di], H. E, 4i;i) 2IJth Ave, lohi:ub,.i>. Ohio Cowan, J. G, ` Ki>elaiiil>.*' f'* 1 ]1111c: i'.. Haughtoii, Stafford. England Cowan. R..Gu>\* Onondaga Puliery Co, ^vracuse. N. Cuweil. .1. Robert. Jr, M*.....Ivillc L:me Pri'Uur'.j C>`.. 21411 Jcrferjoti .\vc.. Toledo 2. Ohio Cuwlin^. Kenneth \\ ., ,9 Norwood Kit, tziieir.eld ;. England Cox. Herbert P. 4oJj 55rd Avc.. X.. Birmingham. Ala. Cox, John E. iS), 312 X. Madison it., Bloomington. III. Cox, Paul E..* 52U X. Tenth it.. Baton Rouge .3. La. Lo\. R. O.. Uay.R.rile Lighting, Inc.. 5-iI l Buiwer Au., >t. Louts 7, Mo Cox. iarnaei F . Pittsburgh Plate Glass Co., Research l.ah.. Creighton. Pa. Cox. Shaun M.. J. A. Johling i Co.. Lid.. Wear Class Works, Sunderiand, Durham. England Coxey. James R, Box 162. itate College, Pa. Coy. John J. (J). 221 Cedric Are.. York Township, Toronto. Out.. Canada Cratt, R. S . Findlay Clay Products Co.. Washington, Pa. Craig, David M, Jr.. 2300 Grant Bldg.. Pittsburgh, Pa. Craig. James E.. 1055 Allison Ave.. Washington. Pa. Craig. Janies W.. Canadian Rc/raeturies. Ltd., 1050 Canada Cemer.t Bldg , Montreal 3, Que, Canada Craig. John D, Jr., Pennsylvania Pulverizing Co.. 1418 Tren ton Trust BIJg.. Trenton 3. X. J. Cramer. W. E.."' 965 \\'. Fiitli Ave., Columbus 12. Ohio Crandall. Eugene R.,' 253 Gulf St.. Miiford, Conn. Crandall. James R,'45`4 Chestnut St.. Rethesdi 14. Md. Crandall, William B, Box 707, Alfred. X. Y. Crandon. A. S., American Window Glass Co., Farmers Rank 31dg.. Pittsburgh 22. Pa. Crane Co, Chattanooga. Temi. Crane. Robert F.. Countrv Club Estates. Kittanniiig. Pa. Craven. Henry E.. 5601 Eastern Ave.. Baltimore 24. Mil. Crawford. George E," 221 Sumner Ave.. New Castle. Pa. Crawford. George S, Industrial Development Branch, Dept. ot.Natural Resources. Regina. Sask.. Canada Crawford. J. L..r Walsh Refractories Corp.. 101 Ferry St, St. Louis 7. Mo. Crawford. J. C.. Jr.. Johns-Mauville Sales Corp.. 22 K. 40th St.. Xew York 16. X. Y. Creatiter. Anse! S, National Bureau oi Standards. Washing ton. 25. 'D. C. Creed. Michael B, ICO X. I.viiu Blvd.. Upper Darby. Pa. Cremer. George D,, lOo W. Damascus Rd,, Oak Ridge. Temi. Creson. Walter F, Babcock & Wilcox t_u,, 1515 National City Bank Bldg, Cleveland 14. Ohio Cress. William C, Carolina Ceramics, foe, R. R. 3. Columbia. S. C. Crrsiy. Morton. Hartfortl-Kinpire Co, 333 Homestead Ave, Hartford 2. Conn. Crider. Paul H. < S>. JI9I F, 13th Ave, Columbus. Ohio Crisnino. Joseph C, 136 K. puheney St, Corning. N. Y. Crockett. Gene S. tSt. 7t#t E. 23`G. Austin. Texas Crockett. William E.. 1215 N. Arlington Ave, Indianapolis. Tnd. . Crorin China Co, < W. K. Cronin l. Minerva. Ohio Cronin. David I, Univis Lens Co, -01 Leo St, Dayton. Ohio Cronin. Leo I, 56 MacArthur Rd.. Natick. Mass. Cron-n. W Kress. Minerva. Ohio Croninger. Ceurge J, Albert J. Wahl. Inc, Srocton N. V. C.-onn. Eduard. Steiiigutiabrik Sch'varzwald. G.M.B.H, Hornberg t Schwarzwaldhahn) Cermanv Crook. Charles E, Los Angeles Chemical Co, I960 Santa Fe Ave, Los Angeles 21. Calii. Crookston. James A,' 1020 Vermont Ave, Apt. I. Pittsburgh. Pa. Crooksville China Co. lHarry J. Bennett), Crooksville, Ohio Croom. Milton M,, 20I1/, Groveland Ave, Raleigh. N. C. Crosby. Donald P. (S), Harhisnn-Walker Refractories Co, Vandalia. Mo. Croskey. Carl D,, 822 Braeside Rd, Baltimore 29. Md. Cross. Charles D. (J). Terrace Court. Apt. 7. Jasper. Ala. Cross. Owen H,' R. R. 2. Godfrey. III. Crossan, \V. A, Metropolitan Paving Brick Co.. 1017 Renkert Bldg, Canton 2, Ohio Ctoasley Machine Co. (William J. Harris). Trenton 9. N. J. Crouch. R. L. (J), Funkhouser Co, Blue Ridge Summit. Pa. Crouchley. George E. IS). Box 206. Alfred, N. Y. . Crowell, Robert W.f (J). 4912 Burnham Ave, Toledo 12, Ohio Crowley, Henry L, 1 Central Avc, West Orange, N. J. Cruikshank. C. L. Great Lakes Foundry Sand Co, 720 United Artists .Bldg, Detroit 26. Mich. Cruadea Martin Mtg. Co. (E. A. Schwarz). 760 S. Second St, St. Louis 2, Mo. Cullinan. Roland V, Olifantsfnntein. Transvaal. South Africa 362 L UMinum; 3. .\\uTf St, New York .1. v. miKiniiM.-* .'i'. ;ia: . XY ,,'.j r i.ju Cummins. Arthur ft. Cedar Cr-rs". KJ, Bound h'r j.ik, X J. Cummins. R..hert X, General Electric Co, 1155 E. 152:id Si, Cirvriand In, Ohi** Cuulirie. B. A, Mcdalti Sale, K. C. Re;* i.. JV* W. Peinjfr Vancouver, Lai'.idj Luniine. >,t> Svvvf. tli yt, Me-M Hat. Oltji i ... Crceniiel, l Ave.. u. R. J, Newark Oj;uv.tr4i\am, Jar.;c> V.. *ii . Mar mi'* ike. !a.i. L`jiiniri^harn. kY>her: . . }7.: Mafde Ave.. Newartv. Curcin. Anthony L, 31 Church 5:, Bound Brook, N. J. Curil. Daniel H, Jr . Commercial Solvent- C ,rp, 17 K. 4J:;<J Si, Xew York. X. 5 . Curran. Edward. Engineering, Ltd, (U. Ryaui. Carditf, __ Wales Curran. Martin T. tS). Box 562. Alfred. N. Y. Currier, Arthur E, Harbivou-Walker Refractories Co, LSI*) Farmers Bank Rldg, Piitsburgh 22. Pa. Curtis, A. B, Jolms-Maiiville Corp, 1550 Guild Hall Hldg, 45 Prospect Ave, NAY. Cleveiaml 15. Ohio Curtis. Mrs. A. L, Westmonr Laboratory. Chatteris, Cam bridge. England Curtis. Cari E, Titanium Alloy Mig. Co, Niagara Falls, X. Y. Curtis. K. dec,* Conestoga Pottery Co, Cuuestoga Kd, Wayne. Pa. Curtis. Earle W,, Elmira,' Ore. Curtis. Miles E . 42(1 Central Park Ave, Dayton . Ohio Curtis. W. F, i-'ostoria Class Co, Moundsvillc. W. Va. Curts. R. M, American Potash & Chemical Corp, 122 E. 42ml St.. New York 17. X. Y. Cushman. Donald 5, (mu-, Speideti X Co, 117 Liberty St, Xew York b. X. Y. Cutler. Ivan B, L'niversity nf Utah, Salt Lake City I, Utah Czarnecki. Kamil R, Sloaite Ave, Mansions, London S.W. 5. England Czechoslovak Ceramic ami Class Society. R. Rarta. Praha XIX. Technicka ul.c. 5. Czechoslovakia Czologns. Edmund P, 217 East Ave, Oak Park, III. D Dager. Probcrt W./' 1474.1 Morrison St, Van Nuys. Calil. Dailey. KAY, 14;04 Eu.did Avc, East Cleveland 12. Ohio Dale. KJwii: L. iSi. 55 W Cleveland Dr, Bmtalo 21. X Y. Dalton. Robert H,, 234 Ueievan Ave, Corning. X'. Y. Daniel. George R,, 1555 S. Fifth St.. Ironton. Ohio Danielson. R. R,*r Metal It Thermit Corp, Carteret. X. J. Dauks. William H, 216 Mississippi Ave.. Crystal City. Mix Dautzler, M. A, L'uivvrsal-Rundle Corp, 3505 W. Forest Hume Ave, Milwaukee 15. Mis. Darby. George M, ol '.Ya-hingtou Ave, Mcstporr. Lonn. Darra'n. M". bill X (3rk Park Blvii. Gic Park. Ml. Das Gunta. A. K,, 272 (3ak St,, Perth Amboy. X. J. Daste. John J, Box 224, Lincoln. Calif. Daumke. Arthur H,, 4451 X. California Ave, Chicago 25. Ill Dauwalter. A. C, M'.S. Dickey Clay Mfg. Co, Box 1592. Bir- miugham l. Ala. D3vev. Earl R . Canadian Ohio Rrass Co, l.ttl, Xiagara Falls. Out.. Canada Davey. Fredrick X. f 5f. Ceramics Dept, Rutgers University. New Brunswick. X". J. Davidson. Martin j.' (J). 1025 F, 14tit St, Bmuklvn 30. X. Y. Davidson. Myron R, Alhert B. Hart Jr. High school. 7551 Broadway Ave, Cleveland 5. Ohio Davies. Chester A,7 Park Lake Avc, Titusville.^ N'. J. Davies, Edward G, Dominion Glass Co, Ltd, Mallaceburg, Out, Canada Davis Fire Brick Co. i D. D. Davis). Oak Hill. Ohio Davis, D. D, Davis Fire Brick Co, Oak Hill. Ohio Davis. Dee iSi. 3997 S. Whetsei Ave, Cincinnati 27. Ohio Davis. Emmett M, Glohe-Uninn Inc, 900 E. Keefe Ave, Mil waukee. Wis. Davis, Harry E..*' Universal Potteries. Inc.. Camhridge. 0h' _ Davis. H. M, Mineral Industries Bldg, State College. Pa. Davis, James C. ijl. 7R08 S. Shore Dr, Chicago 49, 111. Davis, James K, 46 W. Fourth St, Coming. N. Y. Davis, N. B, Rni. 512, 140 Wellington St.. Ottawa, Ont, Canada Davis. Richard E. (J), 947 Belt Ave, St. Louis, Mo. Davis, Sam H, Jr, Robinson. 111. Day, Arthur L. (Honorary). 9U3 Old Georgetown Rd, Bethesda 14, Md. Day, Charles M,, 796 Arcade Bldg, 312 Olive St, St. Louis, Mo. Day. Frank. Jr, Coming Glass Works. Corning, N. Day, Jack F.2 835 Forest Ave, Zanesville. Ohio Ceramic Bulletin D:v. a I;'ii K./ Libbey-Ow'cns-I' #r<l Ol.i: Co, 1701 E [ir'.au'.vav, Toledo Ohio Da%. Robcr: Ii..T J40 VV. Suit Rd, Brazil. Lid. DraJ.To're. Dacici' (Si, 13795 Thornton Rd, Blue Inland. 111. Deal 5i.-r. M.' `So 1519 Boniiain. .\:narilln. Texas Ota' Paul 6 '.'.x 505. Blacksburg. l a. Defer::-:a:ii. illij.-n 5..' 714 Erick Bldg, Pittsburgh. Pa. Debus. Howard \S1, 5016-A Speedway. Aui::n. Texas Deife'-cii. J. A., 910 Keystone Ave, R:ver Forest. 111. Degeukuib. Robert S. (S). K. K. 1, Hus 199. Grayi Lake, 111. Deri;. C. L. Homer Laugiilin China C", Nowell. \\ . la. De-gar, I. S-igei'.e. 3304 Maple ;(.. Progress. Dauphin County. DePeat.h. H. R, American Nephcliue Corp.. I.akcneld. Out, Canada de rriice, Raipii, 7 Bayside Dr., (ireat Neck, Lung Island. DeNig. nVa.n, Charles J./ 120 N. Everett Ave.. Columbus, Ohio de Draw. Peter. ESS-In GHQ SCAP APO 500. San Fran- DelgaCo. Cyril 3.. 35 W. 42ntl St., New York 13. N. Y. BeLor.g. Herrr.oit W, Ill, 67 Main St.. Dinville. N. Y. Demarest. W. G.. Clay Products Assn, of the Southwest. o5l> LitilrrrxeId Bldg.. Austin. Texas Demongeot, Henri, Interkiln Corp.. 415 Lexington Ave.. New York 17. N. Y'. Demuth Glass Works ill. A. Juiianl. Box o59. Parkersburg. VV. Va. . _ Drr.trr,. IV. F.. North Carolina Feld-par Coro., Erwin. Trim. Denison Engineering Co, (IV. C. Denison I, J Ids:* Dublin Kd,, Columbus 16. Ohio __ Denison. George IV,* Box 1//6. Newhurg Sta., Cleveland 5, Ohio Denison. Norman E, Ohio Clay Co, Box 1776, Cleveland 5. Ohio Denison. \Y. C, Denison Engineering Co, 1160 Dublin Rd.. Coiumbus 16, Ohio De a Songelige Porcelains/abrik St Fajaocefabriken Alurainia A. S. (Chr. Christensen!. Smallegade 45. Copenhagen F, Denmark Denman. Cedric E, Great Bend Brick & Tile Co, Inc.. Rnx 55. Great Ber.d. Kan. Denny. Katherine E, 1407 E. 45tli. Seattle 5. Hash. Denver Sewer Pipe St Clay Cj. i.William J. Geddcsl, n..s 5359. Denver. Col. DePaciis. Paul F,, 130 Longacre Rd, Rochester 3, N. Y. dePmsse. V ictor A. (Si, 53 Pincrest Dr, Hastiugs-un-Hud.-sui 5. N. Y. DeRerr.er, John '.V./ Box 112. Allred, N. Y. Derge. Gerhard, Carnegie Institute of Technology, Pitts burgh 12. ?a. Deringer. W. A,* 4448 N. Maryland Ave, Milwaukee II. Wis. Derrer. Charles F, Jr./ 11 Forest Ave, Elm Grove, Wheeling. W. Va. Desaix. Herbert A./ Allied Engineering Co, 4150 E. 5<kh St, Cleveland. Ohio _ Desiarcins, Gregory T, 2436 Reading Rd, Cincinnati 2. Ohio Desmond, Edna .Mae (J), Maple Ave, North Haver, Conn. Deurvorst. F. B. M,, Het Zonnrnuis. Terborg. Holland Deutch. Eugene, 12 W. Maple St, Chicago 10. III. Deutsche Giastechnische Gc-sellscliaft, H. Maurach, Untcr- mair.kai 12. Frankiurt A. M, Germany Deutsche Keramische Gesellschait, Mr. Knauf Poppelsdor- ferallee 13. Bonn. Germany Deutscher. Jerome S/ (]), 222 E. College Ave, Alliance, Ohio DeYilbiss Co. (E. F. Frey). Toledo 1, Ohio DeVoe. Charles F,, 28 W. Fourth St, Corning. N. Y. Devol, Lee, Harttord-Empire Co, Box 1620. Hartford I. Conn. Dew, Robert J, Jr, 3-13 Westgate \V, Cambridge 39, Mass. Dewey. 3. F, 4* Summit St, LeRov. N. Y. Drxheimer. E. C, Box 6. Granite City. HI. Deyerling. Carl I_26 Baker Ave, Cincinnati 17. Ohio iamond Alkali Co. (L. T. Welshans), Painesville. Ohio iamond. Grant S,*f 76 Rosedale Ave, Hamburg, S. Y. iaz. Jose J. (S), Fabrica Nacional Loza de Penco. Penco, Chile iek, Clarence H, Gordon St, Natrona Heights. Pa. ick. Edward F. (J), IIS E. Ross St, Lancaster, Pa. ick. William O, Jr. (SI, Klatt Alpine, Box FF, Alfred, N. Y. ickas. Charles H,, 1524 Sunset Rd, Chattanooga. Tenn. ickens. H. A, Nilcrom Porcelains (Aust.) Pry, Ltd, 221 Separation St, Northcote. Victoria, Australia jckey, Herbert R, 26 Regent St, St. Thomas. Ont, Canada ickev, John M, Jr/ (J). 179 Franklin Ave, Brookville, Pa. ickson. Edwin J. (S), Log Cabin Dr.. Smyrna, Ga. ickjon. John H. (S). 316 Oalcmont Ave, Steubenville. Ohio ol. J9. No. 10 (1950) Diener. Leonard W, Lutlibert i Park A'.'c, Lmlingswood. N. J. Dietert. Harry W, 9330 Roselawn Ave, Detroit 4. Mich. Dirtier! Har.s. jr, Tl'.ertr.a. Electric Keating Mig. C a. Ltd, Schuamicn. i/arus. Switzerland^ __ Dietrich. Waidemar r. Box 39/. Lapitola. Cam. Dietterle. Euwtr. Y. . 2534 Mmiteiih Dr, Los Ar.geles 45. Calii. , UiLaura. Frar.cts .1, Part Deposit, aid. Dilkj. p.artram H , Jr. tztupakorf Ceramic A M:g. Co, La- Dillender. Richard z/- `Si, 2114 McDowell St, Augusta, oa. Dilliard. Paul D, 1315 E. Wheeling it, Lancaster. Ohi.i Dillingham. Robert ?. tj). Box 46. R. R. 1. Golden, Col. Diilon. Zale. io Riveriawn Dr, Fair Haven. N. J Dingledine. H. F, National hewer Pipe Co, Ltd, Menr.vurth St N . Hamilton. Ont, Canada Dingledy. David. 225 Hoover St, Newark. Ohio Dingwail. Andrew. 32a Spring bt,, New York U. N. Y. Dipped. L. V, 17 Second Ave, Tiffin 9. Ohio Diran Loris M. '.SL 106 Spruce St, Watertown, Mass, nirats E'wvn 120 W. Silver St, Westfield, Mass. Disch. Joan A. iS'i. 2ox FI. Alfred. X. Y. Distillatnr. Phiiip R, Jackson Vitrified China Co, 2673 Bailey Ave, New York 63. N. Y. Dixon. Anna Lane. 81: N. Fourth hi, Burlington. Iowa Dixon! Fre<l W, Jr, Haven Malleable Castings Co, Dane & Know I ton Sts, Cincinnati 23. Ohio Dixon. Gene. Xvanite Mining Corp, Cullen. Va. Dixon, Joiepb. Crucible Co. (Warren A. Zimmer;. Jersey Uhigozima' W ?../ 406 Blakely St.. East Liverpool. Ohio Dobbins. Norman E, Rox 117, Vereeniging. Transvaal, South Africa Dobruvolny, Frank J, Lower Mountain Rd, Ransomville. NY'. Doild. Arthur E, Mellor Laboratories, Hanley. Stoke-on- Trent. Engianc . . _ . .. Dodd. Charles M," Dept, m Ceramic Engineering. Iowa State College. Ames. Ia. c Dodge.Alirrd W, Hazel-Atlas Glass Co, 126 Ma.-ket St, 7ii\e<vii!c. OVl!o Dodson. W. E, Fire Brick Service X Supply. 900 E. 72r.d St, Cleveland 3. Ohio i riisrVs E Mt. (..cnicits Pottery Lo,, Mt. Clemens, l.lich. Doliiser Charies' M, Jr, I9o0 Lower Ferry Rd, R. R. 5. Utdph'Tin-fi -S>- i4H' Cleveland 9. Ohio Dominion Minerals. Inc iY. V Kelsey-. Pmey River Douaiiev. !chn W, Apt. 22. Ji Revere Rd, UrexeJ_Hih. Pi. Doncn. 1, Consolidated Loass Works. Ltd.. Box ;o2. Germis- tnn. Transvaal. Siuth Africa Donev. Louis M, 104 Aianama it. South L.mt.m 4. Tenn. Domienwinh. A. L,T/.S Seymour Ave, Niagara Fails \. . Dora 'o-e-ih C, >r,` 3ubl W. s\ ashingtpn ut. Loui,. Sio. Doran. Robert r./ Sylvania Electric Products. Inc, Cottage PL. Mineola. N. Y. .... n.rn \lvah 1.. i-Jresdcn. N. . Dorn. Geo*ge N. !j). Ml- S. Third St Ironton. Ohio 6Dornbach W. F,/ 24: Alameda B.vil, Coronado. Cain. Tlnrsett A. Knox Porceiain Corp, Knoxville. Tenr, Dorsev Ba-rd L, 300 Walnut Rd, Pittsburgh 2. Pa. Dorsey: Joan j. SL R. R,5 Weilsville. N. Y. Doty, Henrv 5.. Comrnercialores. Lortlandt 5t., Nevw \ orW Dougin!* C. w,, 5023 Bellevue Dr, Glendale L Calif. Dougherty. Leon A, Box /15 Sun Prairie. A,s. Doughertv. Syivester J, Metallurgical Dept, Weirton hteel D.wighe^rtv r,wn E, 1765 Barr Ave, Pittsburgh 5. Pa. Douglas. John. Co. (Krell Busier ). Cmcmnati 16 Ohio Douglas. Richmond. Douglas Firebrick Co, Ltd, Dairy. D^eger'^'c^it!1''^- *Vl. Naval Medical Research Institute. Drakel^ohn'u Li1>bey-Owens-Ford Glass Co, 1701 E. Broad way, Toledo :. Ohio nr j vt v Drake M EUis. Alfred University, Alfred. N. Y. Dtakenfeld. B. F.. & Co- I Scott J. Courtney), 4$-47 Park Place New Y'ork 7. N. Y. Draker Ha--v C, 54230 Maplewood Dr, Euclid 23, Ohio Dramm'eni GUwvetk. (Ragnar Tanberg). Drammen, Norway Draper. Perry ,, Mansneld Sanitary Pottery, Inc.. Perrys- Drii'hiler^'fohn H, Gladding. McBean 4 Co, Lincoln. Calif. Dressier, Philip.*' Swindell-Dressier Corp, Box 1888. PittsDreyer Donald H. (S3. Bldg. 6, Apt. B, Arlene Village. Millville. N. J. 36.1 Druckcr. Julius, Farbcniabrikcn Bayer. Kreteid-L'crdingen 22, Germany Dubblc. Roger D . 165 Mark Ave, Lancaster, Ohm Dubler, Robert H. iS'i, Box 5375, Georgia Institute oi Tech nology, .Atlanta, Ga. DuEais, H. B ," Consolidated Fel<!s|<ar Corp, 1403 Trenton Trust Bldg., Trenton 3. N. /. DuBois. Harold V.. 4147 IJOtli, Lawndale, Caii:. Dubsky, Vllerr., 7 V'everkova. Prague VII. Czechoslovakia Duche. Frederic, Companie Generals d'Electro-Ceramique. 56 Rue la I3uerie. Paris .5, France Duckworth. Winston. Battelle Memorial Institute. :05 King Ave, Columbus, Ohio Dudlev, Virginia (S). R. R. 2, Rising Fawn. Ga. Duevel, Charles O., Jr.. American Thermos Bottle Co.. Nor- wich. Conn. Duff. R. D . 4313 Commonwealth, Toledo. Ohio Durty. J. P, Stillwater Clay Products Co.. Lock Drawer 32, Uhrichsville. Ohio Duiour. Jean L., Ceramics Sanitaria Porcelite, Rua Itatuga 291, Sao Paulo. Brazil Dugan, Robert T. (S3, 2703 Rio Grande St.. Austin. Texas Dugan. Stayner .4. (S), Dept, of Ceramic Engineering, Uni versity of Texas. Austin. Texas Dunn. E. C., 17400 Flamingo Ave.. Cleveland 11. Ohio Duhrssen, Alfred. Commercial Decal. Inc., East Liverpool. Ohio Duke, James B.. 320 W. Main St.. Lakeland. F'.a. Duke. John J.. Box 33. Saxonburg, Pa. Dulberg. Irving (S3. 1413 N. S'ate St.. Rolla. Mo. Dunbeck. Norman J., Eastern Clay Products, Inc., Jackson. Ohio Duncan. J. Earle, Pittsburgh Plate Glass Co.. Research Labo ratories. Creighton, Pa. Duncan. Russell F.. 209 Franklin Dr., Berea, Ohio Duncombe, George H., Jr..* 150 E. Frambes Ave., Columbus I. Ohio Dungan. Robert (S3, 19 O'Connor Ave.. Hornell. N'. V. Dunn. H. E.. Vanadium Corp oi Amercia, Bridgeville. Pa. Dunnican. Ward G.. 277 E. Seventh St.. Clifton, N. J. Duplin. -V. J.. Jr.. R. R. 1. Paris, Ohio dn Pont. E. I. de Nemours Sc Co, Inc. (H. C. Kuchler). Electrochemical Dept., Wilmington 98. Del. Durgin, Charles B.. Monsanto Chemical Co.. Anniston. Ala. Durham. Cari T.. Jr. (S3. Sox 111. Chape! Hill, X. C. Dutterer. Rex J. L.. Hastings Mfg. Co.. N. Hanover St.. Hast ings. Mich. Duvall. Wayne H, J19 E. Court St.. Urbana. Ohio Duvekot. Theodore. 26 Woodland Ave.. Wellsboro. Pa. Du-.vez. Pol. Jet Propulsion Lab.. California Institute of Technoiogy, Pasadena. Calif. Dwindle, James D.. 16 Walr.ut St, Batavia. N. Y. Dykeman. Martin E,, 142 Wall St, Corning. N. Y. E Eagle. J. Eugene." 3202 McShane Way. Baltimore 22. Md. Eagle Richer Co. (O. P. Hensel. American Bldg., Cincinnati 1. Ohio Earhart, William H.. Ceramic Engineering Dept, Pennsyl vania State College. State College. Pa. Earl. Fred C (S3. Box 179. Alfred N. Y. Earl. J. Allred. 1621 S. El Molino St, Alhambra. Calif. Early, Joseph,' Box 1312 Fairmont. W. Va. Early. Joseph W, Early Foundry Co, Dickson City. Pa. East. Waiter H, Box 613. Solana Beach. Calif. Easter, George J,' Electro Refractories 4 Alloys Corp, Willett Rd, Buffalo 19. N. Y. Eastman Kodak Co, Research Library, Kodak Park Works. Rochester 4, N. Y. Ebright. Harry E,* 14726 Cliiton Blvd, Cleveland 7. Ohio Eck. Bernard J. (S3. 1945 S. Glenwood. Springrieid. III. Eckel. J. C, Carnegie-Illinois Steel Corp, 922 Carnegie Bldg, Pittsburgh 30. Pa. Eckley, J. R, Aluminum Co. of America. 301 Gulf Bldg, Pittsburgh 19. Pa. Economos. George (S), 394 Riverway. Suite 9. Boston, 15. Mass. Eddy, Maxson A, "East Acres." East Landis Ave, Vine- land. N. J. Edlin, Vernon (S3. 6721 Paxton Ave, Chicago 49, HI. Edson. Sidney P, 3023 90h St;. Jackson Heights, 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,' Summitville, Ohio Ehlers, G. Milton, 2206 E. Kensington Blvd, Milwaukee 11, Wis. 364 Eiiman. R.,y (J, Svri,.>i .o' Mineral Indus trica. Penn,;. 1*. am . State College. State College. Pa. Eide. Alwm C, American /line Saies Co, Box 327. Columbus 16. Ohio Eisenberg. Meyer'tji. 25-52 JSch St, Long Island City N V. Rite!. Wilhelm. Box 348. Norris. Term. Eiwen. George E. (S,. Box 177. Aiired. N. Y. Ekholm. L. 0./ Box 357. R. R. 2. McKeesport. Pa. Elder, J C, Robertson Mfg. Co, Box 348, Trenton J. X E'tdred. Oren J. I.S >. 3 Karrdale Ave, Almond. X. Y Electric Auto-Lite Co, Spark Plug Div. (Robert Taci'.. , Box 231. Fostoria. Ohio Electro Refractories Sc Alloys Corp. (Grant 5. Diamond , 344 Delaware Ave, Butfalo 2. N. Y. EHefson. 3. 5, Sylvania Electric Products. Inc, 208-5(3 Cross Island Parkway, Baystde. Long Island. X. 3". Ellerton, Hugh. Ceramics Research Labs, School of Mines 3c Industries, N. Terrace. Adelaide. South Australia Elliott. A. W, Covered Wagon ?anch. Cloverdaie, Calif. Elliott, George. Bonnvside House. Bonnybridge. Stirling, Scotland Ellis. .Arthur, 216 Smite Rd, Longton, Stoke-mi-Trert. England Ellis. W. H, 2360 S. Union St, Alliance. Ohio Ellison, Henry W, 12 E. Third St, Corning. X. Y. Ellison, R. W, 1551 E. Loma Alta Dr, Altadrna. Calif. Elmer. Thomas H, 100 S. Tampa Lane. Oak Ridge. T<-tm. Elosua. Bernardo. Apt. 360, Monterrey. N. L, Mexico Elston. Keith.' Hawthorne St, Lenox. Mass. Ely. Wi'.iiam G, Pittsburglt Plate Glass Co, 23UO Grant Bldg, Pittsburgh 19. Pa. Emanuel. E. C, Armstrong Cork Co, Research Labs, Lan caster, Pa. Emery. George. Ecanada Art Pottery, 206 Dundurn St, S. Hamilton. Ont, Canada Emhiser. Donald (J3. 500 W. Ninth Ave, Tarentum. Pa. Emison. M. Hershel. Corning Glass Works, Charleroi Div, Charleroi. Pa. , Emley, Wiiliam S, 303 Englewod Ave, New Castle. Pa. ; Emrich. Allen H. iSL 1799 Franklin Ave, Columbus. Ohio Emrich. Emerson W,' R. T. Vanderbilt Labs, East Nor-.va.k. Conn. Enberg. Christer, Tegellahnratoriet. Box 5073. S11w.-(c: .;<n 5. Sweden E.nde. Woligang A, 198 Chemung St, Corning, N. Y. j Engel. Juan J. R, Casilla Correo 2394. Buenos Aires. Argen tina Engle. Chester C,, United Clay Mines Corp, Trenton o. N. J. English China Clays Sales Corp, 551 Filth Ave, New York 17. N. Y. Enhus. Hans Gosta. Akticbolaget Malardalens Tegrlhruk. . Stockholm 3. Ericsbergsgatan 27. Sweden Enloe. Scroop W, Jr, Spruce Pine. N. C. Enioe. Scroop W, Dillsboro. N. C. Erard. Edward, Prolongacton Calle De La Rosa. No. 9, Aiz- capotzalco. D. F, Mexico Erickson. A. Alfred. 34 Pershing St, Coming, N. Y. Erickson. Allen J, 4844 38th Ave. N.E, Seattle 3. Wash. Erie Resistor Corp. (Byron B. Minmumi, 644 \V. 12th St, , Erie, Pa. Ernst. Walter S, 2723 E. Fifth Ave, Knoxville. Tenn. Ervin. Gov. Jr, Resea rc'n Laboratory. Norton Co, Wor- I cester. Mass. Erzen. Frank C. iS3. R. R. 1. Box 407. Renton, 'A ash. Esnersen. Karen (S3, Holmegaards Glasvaerk, Holme-' Olstrup. Denmark Espinosa. Miguel. 3ox 2848. '.uito. Ecuador Esrey, Wallace M, R. R. 2. Box 299. Pittsburgh. Calif. Esselstyn. Wiilard A, R. R. I. Canonsburg. Pa. Essenpreis. James F,r 2123 California Ave, Dayton 9. Ohio Essick. Charles R_ Pennsylvania Optical Co, Reading. ?a. Estes. J. F, Haeger Potteries. Inc, Dundee. III. Ethereoge. Otis K_ 252. Gordon. Ga. Etris. Samuel F. (SV 86 Harrison Ave, Highland Park. N. J- Etzel, Eugene P, Jr. (Jl, *S85 Valley Rd, Upper Montclair* N. J. ' Eubank. W. Ritderick. Ceramics Section. 1609 Michelioo Lab, Gf. S. Naval Ordnance Test Station. China Lalra Calif. Eubanks. Alfred G.' fJ3. Sanatorium. N. C. Eureka Flint Sc Spar Co. iHerrehl D. Tiiropp), 190 W. So St, Trenton 3. N. J. Eusner, George R, 1025 Summitt St, McKeesport. Pa. Evans. B. B,, Buffalo Pottery. Inc, Seneca St. Sc Hayes PUe Buffalo 10. N. Y. Evans, Charles E, 1036 S. Ohio Ave, Columbus, Ohio Evans. Daniel O, Hillcrest Sc Linden Ave, Mapleview. Ch leroi. Pa. Ceramic Bull Evan Lrad Corp. (K. M. Evans.. 3-ix 14)7. Charleston 25. W. V:i. Evans: Richard F, 220 S. Buckner Blvd, Daiias 17, Texas Evan-,. R. L, George L. Ashworth 4 Bros., L:d, Broad St. Works,. Hanley Stoke-on-Trent, England Evans. R. M, Evans Lead Corp., Box 1-4)7, Charleston 23. W. '.'a, Evans, Ross M . oO-t E. Mechanic St., Brazil, Ind. Evans. William W. tj), 712 E. Fourth St.. Dover, Ohio Everhart. J. 0.."r Engineering Experiment Station, Ohio State University, Columbus 10. Ohio Ewing,' Robert F,, Manshcid Sanitary Pottery. Perrysviile. Ohio Exoica Co. i S. F. Walton), Tonawanda. N. V. Eye.-ly, George B..' Argonne National Laboratory. Box 5207. Chicago 80. 111. F Fahianic. W'illiatn L,*r 1831 Seminary Ave., Alton. III. Fabrica de Ladrilloa Industrials j Sefractartoa, S. A. 'Sal vador Odriozola Gomez), Apartadn 390, Monterrey, Nr. L, Mexico Fabrica de Porcelana da Viata Ategre Lda., Largo da Biblioteca Publica. No. 17. Lisbon, Portugal Fairracta Co., Inc. t M. P. Mitchell). Box 374, Trenton 5. N. J. Fackr. George P..* Box 936. Palo Verdes Estates, Calif. Fadanelli, Louis H. (S'). 2726 Congress St.. Chicago 12. III. Fanrenbruck, William Oj R. R. 1, Box 95, Tiffin, Ohio Failmezger, Howard, 96 Colonial Village Rd., Rochester 10, N. V. Fairchiid, Charles O.. Chain Bridge Rd., Fairfax, R. R. 3, Va. Faires, Alton M. (J), I669-B Parkline Dr., Prospect Park Plan, Pittsburgh 27, Pa. Falconer. Donald P., 1018 Maple Ave.. Evanston, III. Fallon, Frank J,, 1085 Tuxedo Square. Teaneck, N. J. Falter, Arthur H., 8635 Jacob PI.. Niagara Falls, N. V. Fanderlik. Milota, Nerudova 10, Hradec Kralove, Czecho slovakia Farber^ Louis G,* American Ceramic Society, 2525 N. High St.. Columbus 2. Ohio Fargo. Jarvis J. S>._40 N. Pine St.. Corning. N. Y. Farnell. James H.. 70 Cole Ave.. Williatnstown, Mass. Farr. Archie E. i J). 13*/ Walnut Sr, Batavia. N. Y. Farr. Forest F. .Si, 603 Olive, Rolla. Mo. Farris. Frank H.. 693 Jerusalem A.ve., Hempstead. Long Island. N. Y. Farrow. Lewis C.. Harshaw Chemical Co., 1945 E. 97th St., Cleveland d. Ohio Faulkner, Karl B., Corning Glass Works. Corning. .V. Y. Faulkner. Richard. 543 N. Duke St., Lancaster, Pa. Faust, irriest H.. Jr.' (Jl. 15 S. Elm St.. Wallingford, Conn. Faust. George T., 9907 Capitol View Ave.. Silver Spring, Md. Federal Glass Co. (Henry H. Blau), E. Innis Ave., Columbus 7. Ohio tderal Seaboard Terra Cotta Corp, (O. E. Mathiasen), Perth Amboy. N. J. edock. Michael P, 1410 16th N.W., Canton, Ohio eigenoaum. Simon. Jones 3c Laughlin Steel Corp, 40 Longworth St:. Pittsburgh 7. Pa. ellows. R. L," 74) N. Kensington Ave.. La Grange, 111. el lows. Roger L, JrA (J). 908 Radcliffe St.. Bristol. Pa. els. C. G,* II DeForrest Ave, North Plainrield, N. J. tnitv, Robert D.r (J), Horizons, Inc, 2391 E. 79th St.. Cleve land. Ohio enton. Thomas W, General Steel Wares, Ltd, London. Ont, Canada nton. Walter M, Metalloy Corp, 2360 Rand Tower. Min neapolis 2. Minn. dinand. George. 6217 Hollenbeck St, Huntington Pic., 'if. son, Douglas J, Pigeon Forge Pottery, Pigeon Forge, enn. guson. D. Robert, III (S). 392 Hazel Dr, Pittsburgh 28. a. , ruson. Frank D. (S), 126 Lansdowne St, Peterborough, nt,, Canada guson. Robert F, 1765 Caleb Dr, Zanesville, Ohio uson. Robert l_ Yankee Hill Brick Mfg. Co, 730 Stuart Idg, Lincoln 8. Neb. .uson. R. \V, General Ceramics & Steatite Corp, Keasr. N. J. s, Harry P. (S). Delta Tau Delta. State College. Pa. o Enamel Corp. (R. A. Weaver), 4150 E. 56th St, Cleved 5, Ohio 20, No. 10 (1950) Ferro Enamels (Australia) Pt7, Ltd. I K. M. Mueller :. Bourke Rd, Alexandria, N.S.W, Australia Ferro Engineering Co. (Walter M. Cliarman). I2C8 Hanna Bldg, Cleveland 15. Ohio Fesiler. A. H,*' Fenton. Mich. Fetter. H, C.-mpania Mexicans de Refractsrt-is. A. P. Green S. A, Tlalncpaiula Apartad... Postal 23, Mexico City. Mex-.c.i Fettke. diaries R, 1113 Wightman St, Ptusburzh 17. Pa. Fetzer. George W, J425 N. High St, A.pt. 3, Columbus 2. Ohio Fcyling. Ciaus A, Eie Steiitifahrik, Egeriund, Norway Fiberglas Canada. Ltd, Oshawa, Out, Canada Field. Theodore E, loth 4 Lee Sis, Louisville 10. Ky. Fields. Ernest, Jr. t J >, 1233 S. Vandeventer Ave, St. Louis 10. Mo. Filippi. Hugo,* Illinois Brick Co, 223 N. La Salle St, Rm. 1716, Chicago I. III. Fillmore. Charles L.' J), 1511 Longfellow St, Hvattsville, Md. Filreis, Samuel iS't, 304 E. Park Dr, Raleigh. N. C. Finch. Braden. 121 Coast Highway. Corona del Mar. Calif. Findlay Clay Products Co. i R. 5. Craft). Washington. Pa. Finley. John p, Jr. i 5i, 3351 W. 41st it, Cleveland 9. Ohio Firestine. Arthur G, 34 Dewey Ave, Fairport. N. Y. Fischer, Eugene A, 103 Newton Ave. N,, Worcester 5. Mass. __ Fischer. Eugene A. (Si, II Jetfersmi Rd, R. R. I, Fostoria. Ohio Fischer, Henry C, 1 New Bond St, Worcester 6. Mass. Fischer. James F, 210 W. Seventh St.. Room 406. Los Angeles 14, Calif. Fischer. Joseph R, Bell Telephone Labs, Murray Hill, N. J. Fischer, Robert J, 120 Brighton Ave, Deal, N. J. Fischer. W. V, Anchor Hocking Glass Corp, Lancaster. Ohio Fisk. Henry G,' Natural Resources Research Inst, Univer sity of Wyoming. Laramie, Wyo. Fitzgerald, Alex E,r General Refractories Co, 1520 Locust 5t,, Philadelphia 2. Pa. Fitzpatrick. William D, 808 Movewood Ave, Pittsburgh 13. Pa. Fitzsimmons. Elmer S, Research 4 Development Dept, Bab cock 4 Wilcox Co, Alliance. Ohio Fix. Frank A,, Posev Iron Works, Inc, Lancaster. ?a. Fleischer. Arthur, Box 349. Eastnampton. Mass. Fleischer. Eller, Holst 4 Fleischer. A/S Prinsens Gate I. Oslo. Norway Fleming. A. P. M, Metropolitan Vickers Electrical Co, Ltd, Trartord Pk, Manchester 17. England _ Fleming, Charles A, 215 Dogwood Si, Park Forest. Chicago Heights. III. Fleming. Ravmoml C, Jr. (S). 236 North Ave, N.W.. Atlanta. Ca. Fletcher Enac-.el Co. ij. Carroll Flctchm. Dunbar, W. Va.. Fletcher. J. Carroll. Fletcher Enamel Co, Dunbar. W. Va. Flick. Fulton 3, 1706 First National Bank Bldg, Pittsburgh 22. Pa. Flint. E. P, Armour Research Foundation. 35 W. 33rd St, Chicago 16. 111. Flint. Francis C,*' Hazel-Atlas Glass Co, 319 S. Main St, Washington. Pa. Florence, jack M, Glass Section. National Bureau of Stand ards. Washington 25. D. C. Flu. Eldon B, 1533 Crooks Rd, Roval Oak. Mich. Fogelberg. Sven. Webb's Crystal Glass Co, Ltd, Dennis Glassworks. Stourbridge. England Folkers. Charles L. (S), 620 Second Ave, Ackley, Iowa Fontana. Eugene H. (S), Nittany Dorm. 22-12. State College. Pa. Fonvielle. Frank P, Jr. (S), Apt. A-6. Country Club Manor, York. Pa. Foote, Earl H, Jr,t Akron Rd, Medina. Ohio Foote Mineral Co. (L. G. Bliss), 18 W. Chelten Ave, Phila delphia 44, Pa. Foote. Paul C, 714 Prospect Ave, Lake Bluff, III. Forbes. Lewis J.-3, 165 Bloor St. E. Toronto. Ont, Canada Ford. Francis A, Ceramic Engineering Dept., University of Washington. Seattle 5. Wash. Ford. Frank J, Mosaic Tile Co, Zanesville. Ohio Ford. Fred J, 3ox 56. Sait Lake City. Utah Ford. George D,,t 2136 Filmer St, Zanesville. Ohio Ford. Richard W. (S), 20 Nichols St, Wellsboro. Pa. Forbes. Lewis J.-R, 165 Bloor St. E. Toronto. Ont, Canada Ford. Walter D,,r 219 Maple St, Port Allegany, Pa.^ Fordham. Elmo A, 588 N. Broadwav, Saratoga Springs. s.y. Fords Porcelain Works (I. A. Hansen), Perth Amboy, N. J. Foresman. Grover C, 220 Cedar St, Coming, N. Y. .165 Graham. Bunon W.. Davison Chemical Corp.. Charles A Fayette Sts.. Baltimore J, Md. Graham. John W.. Research Laboratory, Kennametal, Inc.. Latrobe. Pa. Grand Enameling Co., Div. of Grand Industries, Inc. (Va! j. Cichowski l, 2335 E. o'th it.. Cievelaro, Ohio Granner.. Edward A.. 77'Sheehan Ave,, Cincinnati Iz. Ohio Grant. Frederic s'ldl Los Feliz Blvd.. Los Angeles Jb. Cali:. Grant, Mrs. Frederic J., Gladding, McBean A Co., 2901 Los Feiiz 3ivd.. Los Angeles 36. Caiit. Grassell. 3ert L.. Edgewood Acres. R. R. 3, New Castle, Pa. Grauer. Oscar H., 6901 Maple St. N. W., Washington, D C. Gray. Oscar A.. 1401 Arch St.. Philadelphia. Pa. Gray. William T.. 521 Walnut St.. Jenkintown. Pa. Grazi, Giuiio, ILVA. Alti Forni E. Acciaierie D'ltalia Via Corsica 4, Genova, Italy Great Lakes Foundry Sand Co. (C. L. Cruikshank), 720 United Artists Bldg., Detroit 26, Mich. Great Lakes Steel Corp. (Conrad W. Given). Kcorsc. Detroit 18. Mich. Greaves -Walker, A. F..,T Engineering A Industrial Expt. Sta., University of Florida, Gainesville, Fla. Green. A. T., British Ceramic Research Assn.. Queen's Rd.. Penkhuil. Stoke-on-Trent. England Green, A. ?., Fire Brick Co. (R. 5. Bradleyi, Research Dept., Mexico. Mo. Green. .Allen P.. A. P. Green Fire Brick Co.. Mexico. Mo. Green. Joint R..r Brown Instruments Div., Wayne A Roberts Ave.. Philadelphia, Pa. Green. K. ;S.. Church Gresley Potteries, Burton-on-Treiit. England Green, Michael E., 2424 Hagen Dr., Alhambra. Calif. Green. Robert L.. Lenox. Inc., Meade St.. Trenton, N. J. Green. Robert..' 2501 Onandaga Dr., Columbus 12. Ohio Greer.e. Charles F.. Stevens Fire Brick Co.. Macon. Ga. Greene. Charles H.. .230 Chemung St.. Corning, N. 5'. Greene. J. F,,* 1123 Pear St.. Vineland, N. J. Grernr. Robert H.. Canadian General Electric, 5781 Notre Dame E.. Montreal. Que.. Canada Greenspan. LcRoy.I 3470 Cannon Place. N'ew York 63. N. Y. Greger, Herbert H.. R. R. 1. Rockville. Md. Gregorius. J. S.,*' Pittsburgh Plate Glass Co.. 3300 Grant Bidg., Pittsburgh 19. Pa. Gregory, George S.. 200 Broad St.. Port Allegany, Pa. Gregory. Glenn A., Owens-Illinois Glass Co.. Charleston 4. W. Va. Greiaer, Harold W., Philip Carey Mfg. Co.. Lockfand. Cincinnati 15. Ohio Gresham. Lucius C.. Jr. (S). 117 E. 67th St.. Shreveport, La. Grewer, P.- Douglas i Si. Box 117. Alfred. N. Y. Grirferty, Thomas F. (Si, Deita Tau Delta. State College. Pa. Grimn. John E.. Ir. (J), 8J4 E. Blackford St.. Evansville. Ind. Grimn. Thomas W'., Tiny Brook Rd- vVoatogue. Conn. Grimn. William R. (S), Dorm A 130, Missouri School ui Mine:. Rolla, Mo.. Grimth, James D. i J), 522 South St- Erwin. Tenn. Grimth. J. Scott. 5524 W. Adams Sl. Chicago 44, 111. Grimth. R. E.. R. R. 1. Malvern. Pa. Grifntns. Norman, Nonporite Pty.. Ltd.. 292-296 Bur wood Rd.. Hawthorn 5. Victoria. Australia Grigg, Arthur, Denver Sewer Pipe A Clay Co.. Box 2329. Denver 1. Col. Grigg. Paul Ev 2458 Pine Grove St.. Gienside Gardens. Muskegon. Mich. Grim. Ralph E.. Dept, oi Geology, University of Illinois. Urbana. 111. Grimsruc. Ragner. Sandnes. Norway Grobb. F. S., Sternson Laboratories. Ltd.. Brantford. Ont.. Canada Groglode, Samuel S., 2700 St. Clair Ave.. East Liverpool. Ohio Gross. Franklin J.. Carlos de Carvalho 42. Porto Alegre. R. G. Sul. 3razil Gross. Harold I., Santa Anita Potteries. 3117 San Fernando Rd_ Los Angeles. Calii. Grossman. Israel. Ednalite Optical Co., Inc.. 200 N. Water St_ Peekskill, N. Y. Grossman. Maurice K. (SI, 7613 Churchill. Detroit 6. Mich. Groteiendt. Roger F.. 3720 White Ave.. Brentwood 17, Mu. Grove. Robert L.P 93Vi Elm St- S. Dartmouth. Mass. Gruidl. Raymond. Stetson China Co, 999 N. Kickapoo St., Lincoln. III. Gruner. Max N., Harbison-Walker Refractories Co., 1325 Ambassador Bldg., St. Louis 1, Mo. Grunwald. Rose (S), 5320 Fiith Ave- Pittsburgh, Pa. Gruver, Robert M. (S). Dept, oi Ceramics, Pennsylvania State College, State College. Pa. 368 Gschwiud. Jem F . I. O. Russ Engineering Corp., 444 Mail: son Ave.. New York 22. N. Y. Guastavino, Raiaei, 143 Awixa Ave.. Bay Shore. L. I.. N. Y Guerci. Carl F. S). 3713 Bairibrnige Ave.. New York 53. N Y Guisinger. Earl C., Jordan . :le M:g. Co.. Corona. Calii. Guiick. Chester. Kcr.tucky-Tennessee Clay Co., Alliance Ohio Guilings. LeRoy . 290 N. Wabash, Wabash. Ind. Gummesoii. P. Eg.. H.'iga^as-3iiiesholms Aktieboiag. Hog- anas. Sweden Gunther. F. W , 349 Baker Ave.. N. W.. New Philadelphia. Ohio Gur.ther. Juan R.. Casilla 703. Concepcion. Chile Gunzenhauser. Adolph, o!7 W. End Ave., New York 24. N. Y. Gupta, Subodh (S), 90 W. N'orthwood Ave.. Columbus. Ohio Gustavsbergs Aktieoolaget Fabriker. Gustavsberg. Sweden Gustavson. Gorden E.F 739 S. Lincoln Ave., Kankakee, III. Gustin. Jud A., R. T. Vanderbilt Co., 62 Church St., Gouver- neur. N. Y. Guthrie. George, "Ochil" Harrow Rd., Sudbury Kill. Wem bley. .Middlesex. England Guthrie. George B.. 435 W. Martin St.. East Palestine, Ohio Gutierrez. Alvaro Mondragon. Laboratorio Quimico Xacional, Apartado 2577. Bogota. Colombia Gutmann. Paul F.. 5331 Nottingham Ave.. St. Louis 9. Mo. Gzowski. Edward R. (S), 59 Drake St., Oaktield, N". Y. H Hackett. James W.. 2627 G'enwood Ave, Toledo. Ohio Hackler, W. C.T (Si, Ceramic Engineering Dept., North Carolina State College. Raleigh. N. C. 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. III. Haeger Potteries, Inc. (E. H. Haeger). Dundee. III. Haff. Robert S.. Jr.. Walsh Reiractories Co., 101 Ferry St., St. Louis 7. Mo. Hafner. Harold C., Bausch A Loinb Optical Co.. Dept. IH. Rochester 2. N. Y. Hagan. M. A.,I Midwest Research Institute, 4049 Pennsyl vania. Kansas City, Mo. Hagar, Donald.' Box 328. Zanesville. Ohio Hagberc. Carl E.. 311 W. Walnut St.. Kokomo, Ind. Hagedorn. Alwin J. E.. John W. Higman Co., 24 State St- New York 4. N. Y. Hagedorn. E. C.. Owens-Illinois Glass Co.. 1700 N. Westwood. Toledo 7. Ohio Hagetiauer. Car: J.. R. R. 1. Sarver. Pa. Hagerman. Robert 5..: River Rd. Dormitories. Ohio Siate University. Columbus 1C. Ohio Hagner. Fred F. Phoenix Ulass Co.. Monaca, Pa. Hahn. Wiiliam P., 246 N. Jackson Ave.. North Piainncid. N. J. Har.ner. Clarence .-National Bureau of Standards. Wash ington 25. D. C. Haldv. Norman L.. 441 Stewart Ave.. Columbus 6. Ohio Hall China Co- 'M. W. Thompson). East Liverpool, Ohio Hall. Clyde W.. United Clay Mines Corp , Trenton 6, N. J. Hall. E. B., M/S Bird A Co.. Ltd.. Research Dept.. Chartered Bank 3ldgs.. Calcutta. India Hall. Everson. Park Bldg.. East Liverpool. Ohio Hail. F. ?..* Pass A Seymour. Inc.. Syracuse 9, X. Y. Hall. Henry. "Ravenshoe." Kingland Rd.. Poole. England Hall. James L.. Lincoln. Calif. Hall. John T.. Elysian Way, East Liverpool. Ohio Hall. Morris ?./ 206 Lamour Drive. La Canada. Calii. Hallberg. Richard C. (Si, 3ox 184. Friendship. N. Y. Haller. ?.. 106 High Storrs Rd.. Sheffield 11. England Hallett. Crawford W.. 4701 Leiper St.. Philadelphia 24. Pa. Hailoin. William G.. 12'.3 Broadview Blvd.. Brackenridge. Pa. Hallsworth. Stanley, ,\fetal Porcelains. Ltd.. Cornwall Rd, Smethwick 40. Staffs. England Halm. Louise. Union Frangaise des Produits, 15 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. Wash ington 25. D. C. Hamilton, Robert, 16833 E. Jefferson Ave., Grosse Pointe 30. Mich. Hammer. Averill J- Dept, of Chemistry, Bowling Green State University, Bowiing Green. Ohio Hammer. Gunter. "Grange Moore,'* College Rd- Newton Abbot. Devon. England Hammer Reuben R. (S), Box 5563. State College Sta- Raleigh. N. C. Hammond. Leslie G.. United Fireclay Products, Bathville Office. Armadale. West Lothian. Scotland Ceramic Bullet Hammond - Know lion. Mildred. Knowltnii Hiii. Matishcld Center. Cumt. Hmner. Roller! I. , 422 Villanova Rd, Oak Ridge. Tenn. Hampei. Bruce 'Si. 1433 25 lit St.. Rear A pi . Odgen. L'laii Hancock Br-.ck it T-.le Co. ij. Leo Child), Bex 59. Findlay. OhioHancock. Robert T.. C. S. Bureau u( Mines. University. Ala. Hancock. Russcli A.. 33 '.Vater it., Auburn Sydney N.S.W., Australia Hand. Thomas, Cohart Reiractories Co., loth A Lee Sts.. Louisville !'J. Ky. Hami.vere. Joseph H.. University, Ala. Hanes, John G.. Republic Steel Corp., Warren. Ohio Haney. H. L, Harsiiaw Chemical Co.. 905 Edwards A Wildey Bid?.. o09 S. Grand St.-. Los Angeles 14, Calif. Hanks. Charies F., Jr., Lake Rd., Bradford Woods. Pa. Hanley Co. 'Charles E. Bates), Summerville. Pa. Hanna. H. H..r Pittsburgh Plate Glass Co.. Crystal City, Mo. Hanna. Henry X, Clinchtield Sand A Feldspar Corp.. 618 Mercantile Trust Bldg., Baltimore 2, Md. Hanna. Rajph E..' Square D. Co., Peru, Ind. Har.negan, M. H., R. R. 1. Tarentum, Pa. Hannon. Richard C. ( S). 314 W. Sixth Ave.. Columbus. Ohio Hanovia Chemical it M/g. Co. (W. Riehl). 1 W. Central Ave., East Newark. N. J. Hansard. W. Carey,' 2345 Cheshire Bridge Rd., N. E, Atlanta. Ga. Hansen. I. A.. Fords Porcelain Works. Perth Amboy. S'. J. Hansen. J. E.,* Ferro Enamel Corp.. 5309 S. District Blvd., Los Angeies 22. Calif. Hansen, Valdemar. Kastrup Glasvaerk, Ltd., Norrevoldg. 12. Copenhagen K. Denmark Hansen, Waldemar C., Universal Atlas Cement Co., Gary, Bumington Sta.. Ind. Hanson, G. G.. Consolidated Feldspar Corp., 4436 N. .Maple wood Ave., Chicago 25. III. Hanson. Hans R,, 30004 W. Ten Mile Rd.. Farmington, R. R., Mich. Harbert. Carl J.. 3706 Avalon Rd., Shaker Heights 20, Ohio Harbison-Walker Refractories Co. (W. F. Rochow), 1300 Farmers Bank Bldg., Pittsburgh 22. Pa. Harcnurt. Edward L.. North American Mfg. Co.. Cincinnati 2, Ohio Harder. C.iarlej 3.1.,* New Vork State College of Ceramics. Alfred. N. Y. Harding. John Roy, 4 Greenway. Horsham. Sussex. England Eardinge Co.. Inc. (Harlowe Hardinge), York. Pa. Hardinge. Harlowe. Hardinge Co.. Inc.. York. Pa. Harcy, Ronaid G..r 5204 Catalina, Kansas City 3, Kan. Hargreaves. John (Si. 26 Kirk Lane, Yeadon, Leeds. England Earker Pottery Ca. (David G. Boyce). East Liverpool. Ohio Harley. Ted H., Box 130-A, R. R. S. Meuoher Highway, Johnstown, Pa. Harilee. Arthur H. (S). 161 X. Harrell St., Florence, S. C. Harman. C. G," Battelle Memorial Institute, 505 King Ave.. Columbus I. Ohio famed. Russell D.. Corhart Refractories Co., 16th A Lee Sts.. Louisville 10. Ky. famish. John D.. Jr.A 143 E. Second Sc, Derry, Pa. famish. Mark E. IS), 412 Delaware St.. Harrisburg, Pa. farper. Graham H., 630 Bienveneda St., Pacific Palisades. Calif. farper. J. (etcher. Globe-Union, Inc., 900 E. Keefe Ave., Milwaukee. Wis. larper. Roderick L., Harper Electric Furnace Corp.. Niagara Falls. N. Y. larr. William J..f SI7 S. Blvd.. Oak Park. III. Jarrell. George O. (SI, 1517 Hanover St., Raleigh. N. C. Urrington. Henry W., 132 Stafford Ave.. Syracuse 6. X. Y. Urris. Arthur L.. Harris Clay Co., Dillsboro. N. C. Urris. George M. (S), Alfred University, Box 3. Alfred X. Y. juris. Henry M,, 5226 Holly St.. Seattle 8. Wash. lUTis. Margaret. 2325 Birch St.. Denver 7. Col. JtMTis. Robert C. (S). Box 424. Unadilla. X. Y. ris. William J.. Crossley Machine Co.. Trenton 9, X. J. rison. William 3.T fS), 1912 Bluemont Ave, Roanoke. Ya. krrison. Harold C, Westinghouse Electric Corp.. Liaison ngr.. ll-L-21. East Pittsburgh. Pa. ison. W. X..* Xational Bureau of Standards, Washing25. D. C. sell. William B. (S). 345 Union Ave., Elizabeth, X. J. *haw Chemical Co. fjohn W. Iliff), 1945 E. 97th St.. Heveland 6. Ohio F. D, Temco. Inc.. 4104 Park Ave., Nashville 9, Tenn. Harold H., 307 Cass St.. Peoria 2. 111. Wade (S), 517 E. Filth St.. East Liverpool. Ohio ford-Empire Co. (F. Goodwin Smith), Box 1620, Hart- 2, Conn. t'29, Mo. 10 (1950) Harth. 1* E.. 335 (Dicta Drive, Clayton, Mo. Hartshorn. T. D.. .A. J. Lindemami & Hoverson Co., Milwau kee 7, Wis. Hartuig. Irederick J., Jr.. Babcock A Wilcox Co., Box 35, Al!:-ncr. Ohio Harvey. A.. M, Jr., Roanoke-Webster Brick Co., Box 1 C*J 1. Ruitiu.se c. . a. Harvey. Ed.\::i T, 314 W. McPike St. Vandalia, Mo. Harvey. Juiep.u 5. Jr.. 55 Chapel St., Newton 58. Mass. Hasko. Steyiian. 2628 E. Lynn, Anderson, Ind. Hasselbach. Wiiliam. Libbey-Owens-Ford Glass Co.. 1701 E. Broadway, Toledo 5. Ohio Hassett. Wiiliam A. (S), Box 401. Norris. Tenn. Hatch. Edwin F . 506 Gaskill Ave., Jeannette. Pa. Hatch. Robert A.. U. 5. Bureau oi Mines, Electrotechnical Lab., Norris. Tenn. Hathaway, A. J.. Second St.. Youngstown, X. Y. Hathaway, Isaac 5., 4 Tuttle St.. Muntgomery, Ala. Hauth. Charles R. (J), 149 S. Negley Ave., Apt. 12, Pittsburgh 6. Pa. Hauth. Willard E, Jr.. Dept., oi Ceramic Engineering, Iowa State College. Ames. Iowa Haveil, Richard F, 1925 X. 74th Ave.. Elmwood Park. III. Havens. Irvin F. (SI, Box 746, Alfred. N. Y. Haviland A Co, Inc. (Theodore Haviland, II). 26 W. 23rd St.. Xew York 10, X. Y. -Z"-. Haviland. Theodore II, Theodore Haviland A Co.. Inc.. 26 W. 23rd St.. New York 10, X. Y. Hawes, Samuel A., 301 X. E. 6th Ave.. Mineral Wells. Texas Hawk. Elwm A.. Hawk Laboratories, Inc., R. R. I, East Rochester. Ohio Hawke, C. E.. Carborundum Co.. Perth Amboy, X. J. Hawkins, Huckleberry". 2444 E. Stadium Blvd., Ann Arbor, Mich. Hawkins, James M,, Buffalo Brick Corp.. 448 Franklin 5t., Buffalo, X. Y. Hawkins. Robert T. (S), 95 Princeton Place. Orchard Park. X. Y. Hawkinson. John I__ 211 Girard Ave.. Hartford, Conn. Hawks. Ralph L., 3741 El Sereno Ave.. Altadena. Calii. Hawks. Wiiliam L.. 5315 Fisher Place. Seattle 3. Wash. Hawley. Addison. 1408-C Rock Glenn Ave.. Glendale 5. Ca"i. Haw* Refractories Co, (E. E. Slick. Jr.I, 407 Main St, Johnstown, Pa. Hay, Joseph L. (J), 602 Locust St.. Malvern. Ark. Haydon. Mar.- P, 106 Ogontz Lane. Oak Ridge. Tenn. Hazel-Atlas Glass Co. (Francis C. Flint), 319 S. Main St.. Washington. Pa. Hazel. John J, Republic Bldg, Rm. 1526. Renublic Steel Corp, Cleveland 1. Ohio Hazen, E. J,' R. R. 2. Ford City. Pa. Healy. James H. >'S). '.2C6 W. Clark. Urbana.^III. Heath, Chaawtck X, General Shale Products Corn.. Johnson City. Tenr, Heather. John H. (S). 509 Douglas Ave, Toronto 12. Ont, Canada Heck. F. G, E. J. Lavino A Co, 1523 Walnut St, Phila delphia 2. Pa. Hedden. Waiter A, Battelle Memorial Institute, 505 King Ave, Columbus 1. Ohio Hedges. Lee M, -3 Mechanic St.. Somerville. X. J. Hedin. Claes O, Maiardalnes Tegelbruk. Stockholm 3, Sweden Hedquist. Alfred J, Apartado Postal 525. Guadalajara, Jalisco. Mexico Heebner. John C.A Ciaycrat't Co, Shawnee. Ohio Hetti. Franz, c.'o Ziircher Ziegeleien. Talstrassc 33. Zurich, Switzerland Heiligman. H. A,* EL J. Lavino and Co, Box 29, .Norris town. Pa. Heindl. Ravmond A..* 4917 4Jrd St. X. W, Washington 16. D. C. Heischman. Frederick E, 215 Summit St, Fostnria, Ohio Heiaey, A. H,, A Co. (T. C Heisey), Newark. Ohio Heisey. T. Clarence. A. H. Heisey A Co, Newark Ohio Helander. Henning, Gullmarsvagen 12. Enskede. Sweden Helget. J. A, Hurford Machine Works, Inc, Redondo Beach. Calif. Heilman. Stanley L,, Cherokee 3rick A Tile Co, Macon. Ga. Hellmann. Louts E, 212 Fifth Ave, Xew York 10. X. Y. Hellricgel. Edgar J. (S), 184-39 Galway Ave, Hollis 12. X. Y. Helm. David F, Mellon Institute, Pittsburgh 13. Pa. Heiser. Perry D,*r 3604 Rosemary Ave, Glendale 3. Calif. Heiz. Armin W,, 20 Maryland Ave, Gaithersburg, Md. Hemberg, Per Johan. Surte Glasswork, Surte. Sweden Hemphill. R. W, Coionial Insulator Co, 973 Grant St, Akron II. Ohio Hemsteger. Samuel E,f J81 Wellesley Dr, Birmingham. Mich. .369 Henderson. .Chester E.,f 125 Glenview Dr . R. k. I. New Kensington. Pa. Henderson. Frederick C,"' Royal China, Inc, Sebring, Ohio Henderson. K. 3," Box Id. East Liverpool, Ohio Henderson. Ja:nes L, Jr.. Robinson Ventilating Co.. 2ei:cn- ople. Pa. Hendren. Robert R,' 1U5 Bank Ave, Riverton, N. J. Hendrickson. Robert C.. Ceiotex Corp., Lagro. Inti. Hendryx. Dwight B.. boil Darlington Rd, Pittsburgh 17. Pa. Henrar. J. M. G, Si. V. Porselein en Tegeitabriek MOSA Maastricht. Meerssencrweg, Maastricht. Netherlands Henry. Edward C..*T Div. oi Ceramics, Pennsylvania State Coilege. State College, Pa. Henry, Prank R.,* Simonds Worden White Co.. Dayton 7. Ohio Henry. Georges, a/s Union des Verreries Mecaniques Beiges, 41, Quai de Brabant, Charleroi, Belgium Henry. Kenneth M..* Kimble Glass Div.. Owens-Illinois Glass Co.. Dorr 4 Westwood Sts., Box 1035. Toledo 1. Ohio Henry, O. James. Pittsburgh Plate Glass Co., 3, Creighton. Pa. Hense. O. P., Eagle Picner Co.. American Bldg., Cincinnati 1. Ohio Hensler, J. Raymond (5), University Club, State College. Pa. Henson. Charles W.. Norton Co.. Worcester 6, Mass. Henson. \\ . H.. 65 Whitman Rd.. Worcester 5. Mass. Hepplewhite, J. W..*' Edwin M. Knowles China Co.. Newell. W. Va. Herbert, John S., 174 Third Ave.. N. Nashville 3. Teiin. Herbert, Paul R.. Sparta Ceramic Co.. East Sparta. Ohio Herger. Howard C., Pierce Class Co.. Port Allegany, Pa. Herman, Adalbert. Distillers Corp., Ltd., 1430 Peel St., Montreal. Que., Canada Hermann. James L., 4460V, \V. 59th St., Los Angeles 43. Cali I. Herold. Paul G.,*? Missouri School of Mines, Rolla, Mo. Herron. Robert H. (SI, 425 Mazon St., Coal City. 111. Hertzell, E. A., 1111 Chestnut St., Dover. Ohio Hertzog. Ellis S.. 505 18th 5t., Tuscaloosa, Ala. Hess. F. B,, Brockway Glass Co., fnc., Brockway, Pa. Hess. Robert L., Armstrong Cork Co.. Research Laboratories. Lancaster, Pa. Hessinger. Philip S. (SI, Box BB. Alfred. N. Y. Hettinger. E. L..` 1.123 Mineral Spring Rd.. Reading. Pa. Heuer. Russell P, General Reiractories Co., 1520 Locust St.. Philadelphia 2. Pa. Heussner. Carl E.. 552 Brookside Dr.. Birmingham. Mich. Hewitt. Arthur E.. Spode Works. Stoke--an-Trenc. England Hewitt. L. C,*T Laclede-Christy Co., 4705 Ridgewood Ave., St. Louis lo. Mo. Hewlett, James T, Ingram-Richardson Mfg. Co.. Frankfort. Tori. Heystek. Hendrik (J), 15 Betty St., Riviera. Pretoria. South Africa Hicks. Howard. Thermo Fire Brick Co.. Sulphur Sorinqs. Texas Hicks, James C.. 460 Cotton St.. Menlo Park. Calif. Hicks. John F. 131 Hornby Dr.. Painted Post. N. Y. Hicks. Robert G. (Si. 1606 W. Washington. Champaign. [II. Hiernaux. Marcel. 2, Lgue rue d'Argile. Anvers. 3elgium Higgins; Ray, 191 Overlook Ave.. Wadsworth. Ohio Higgins. Waldo W,** 655 S. Harrison Ave.. Kankakee. 111. Higman, John W, Co. I Robert J. Stone), 24 State St.. New York 4. N. Y. Hildebrand. David (S). 516 Graham St.. Chattanooga 3. Tenn. Hill. Ercell C," O. W. Ketcham. Crum Lynne. Pa. Hill. John R.. Box 284. Corfeyviile. Kan. Hii 1. W. Scott. Locke Inc.. Box 37. Baltimore 3, Md. ' Hilling. James L.. Jr. (S), 129 Maple Ave.. Altoona. Pa. Hinckley. .Arthur T., Oldhurv Electro-Chemical Co.. Niagara Falls. N. Y. Hind. Stanley, "The Mount." F.truria Rd.. Basford. Stoke- on-Trent. England Hindes, Stanley V.. 88 Union Ave.. Pittsburgh 5. Pa. Hinds. John F., Radio Valve Co. ni Canada. 189 Durferin St.. Toronto, Ont.. Canada Hines. Robert A. (J), Ensign USNR. U.S.S. Swallow (AMS- J6) c/o Fleet Post Office. San Francisco. Calif. Hinkins. E. A., Tygart Valley Glass Co.. Washington. Pa. Hintze. Wollmar Wilson. International Ceramic Engineering AB, 12 Nyangsvagen. Bromma. Stockholm. Sweden Hirssig. Carl F., 4554 Westway. Toledo 12. Ohio Hiscock. Harley 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. Hite. Earl EM 908 Banrietd Ave.. Toronto, Ohio Hitter. Terry E.. (S). 621 Grand Ave., Ames. Ia. Hitzman, Roger L. (S), Box 275, 1215 S. Fourth St.. Cham paign. 111. 370 Hoagbin. Jn-epii E,M519 Pierce >t.. Flint. .Micii. Hnagland. Wiiltam H . o2rt Dekalb bt, N-rri-towr.. Pu Hoare. Henry A.. 2t>55 Sharundaic Dr. N. E, Atlanta. Ga. Hocker. Clifford. F. ibG 3551 Derry St.. Harrishura. Pa. Hocking. William J. lolJ Pennsylvania Ave.. F.l,t v-rpm .1. Ohio Hodck. F. E.. Jr..* J70n N. Karlov Ave.. Chicagu a1/ Li. Hodgdoti. F'rank B.. Re.-earci: Dept, American Lava C-r;., Chattanooga. Ter.r, Hudson. George N.. Tiie Hail. Myiueswoid. Near Leugii* borough. England Hoehl. Joseph W. Wolverine Porcelain Enameling Co. J5.:,i Scotten .Ave.. Detroit Id. Mich. Hoelicner. Max W, R. R. 2, Dalton. Pa. Hoffman. Carl R., (Si. Nittany Dorm. 33-21. Pennsylvania State College. State College. Pa. Hoffman. Lewi, C..' 157 South 'Butts. State College, Pa. Hnrfman. Sidney C. (S). 629 Depot St, Scranton 9. Pa. Hoffner. Jere R,, T. C. Wheaton Co, Millville. S'. J- Hofstetter. G. W, Ferro Enamel Corp, 336--38 N. Central Ave, Chicago 44. III. Hogan. Thomas W, Flintridge China Co, 330 5. Raymond Ave, Pasadena 2. Calif. Hogendobler. H. R,, Owens-Corniiig Fihergias Corp, Toledo l, Ohio Hogenson. William. Chicago Vitreous Enamel Product Co, 1427 S. ?3:h Court. Cicero 50. 111. Hohmann, Frederick R, 1012 Parkview Avs, New Kensing ton, Pa. Hohn. Cari M. (S). Georgia Institute of Technology. Box 3748. A llama. Ga. Holdener. Irwin K,r Hill Top Tr. Court. Bedford. Ohio Holl. Barton S, 479 E. Mam Si, Logan. Ohio Holladay. Harley R. (S). R. R. 3. Dodze City, Kan. Holley, Kenneth E, 113 Pritchard Ave, Corning. N. Y. Holman, Eugene W. (S), 16 Terrace St, Alfred. N. Y. Holmes. Lyle A, Apt. 3, 49 Parke St, Crafton 5. Pa. Holmstrom. Joseph H. (S). Box 12C9, Central f MC.A. Phila delphia 2. Pa. Holscher. H. H,* Owens-Illinois Glass Co, Adminisirativr Research. 1700 Westwood Ave, Toledo 1. Ohio Holst. Tage. Vinkelvej lo. Konger.s Lyngby. Denmark Holterhoff. A. Gray. 31 E. 13th Si, Cincinnati 10. Ohio Homme), O, Ca. i E. M. Hoitimeli. Box 475. Pittsburgh. ?a. Hommel. E. M, O. Hommei Co, 209 Fourth Ave, Pittsburgh 30. Pa. Honsberg, Werner. Apartado 508. Mexico D. F, Mexico Hood. C, 1800 Kctth Bldg, Cleveland 15. Ohio Hood. Harrison. ?,* 33 E. Fourth St, Corning, NL V . Hooper. 3raaioru. point O'Woods Lane. Darien. Conn. Hoover. Charles H, >413 Ramona Ave, Baltimore 13. Md. Hopkins. Robert W,, Calumite Co, 3ox 131. Hamilton. Ohio Horak. William.** Hartford-Empire Co, Hartford 2. Conn. Horica. Milos. Czechoslovak Ceramic Works. Technical Deot, Prague. Czechoslovakia Hormischer. Harvey W, 377 W. Brockton. Royal Oak. Mich. Horning. Roy A,*' Armstrong Cork Co, Lancaster. Pa. Hornung. Martin R..t 140 E. Sheridan Ave, New Castle. Pa. Horsfall. John C. i S), 4570 Second N.E, beattlc c. lA ash. Honon. Paul B,,* Ceramic Lab, Locke Iiic, Baltimore 3. Hosseniopp, Arthur M, 23 Kendall Ave, Manlewood. N. J Hostetter. J. C,," 1561 Dale Ave.. Winter Park. Fla. Hostetler. John R, 3219 E. Lankin St, Downey. Caiif. Hottinger. A. F,* ( Life). Box 453. (irecn Bay. \Vis. Houchins. Henrv R, Carborunduni Co, Niagara Falls. N. Y Houg'n. James T. iS). 656 Llewellyn Place..Charlotte. N. C Houghton. Amory. Tie Knoll. Corning. N. f . Houska. losep'n L, Harhison-Walker Retractorics Co, 01 iv Hill. Kv. Housman. George S, 203 W. Fornance bt, Norristown. Pa. Houze. Armand L, Jr, I, J. Houze Convex Glass Co, Po Marion. Pa. . Houze. Armand L, Sr, L. J. Houze Convex Glass Co, Pot Marion. Pa. . Houie. L. J, Convex Glass Co. (Armand L. Houze. Sr,) Pot Marion. Pa. Howat. Waiter L,* 85 Hopping Ave, Staten Island 7, N. Howatsnu. John. 46 E. Third St, Corning, N. Y. Howatt. Gletiu, Bldg. J. A, Apt. J. Redfieid Village. Mentch N. J. Howe. Elrov E, Chicago Vitreous Enamel Product So, HM 47 S. 53th Court. Cicero 30. III. Howell. Gordon R. (S). 2331 Brady St, Bon Haven Horn Richmond. Va. Hower. Lawrence D, Jr,,f 225 Green Ave, Bound Brook. N. Hower. R. S, Allen Bradley Co, Mihvaukee. VV'is. Howie. John Ronald. Annick Lodge. Irvine. Scotland Howie. Thomas \V, Campbell & Co.. (Rougheastle) L Roughcastle Works. Falkirk. Scotland Ceramic Bu Hoyc;. Eugene, R. R. 2. Box 252. Tarentum. Pi. Hiu. K'j-ii'ja. 47 Austin RJ.. Kowloon. Hong Kong Hsu. Shou-Yuan (Si. ICO" River Road Dorms, Ohio State University. Columbus 10. Ditto Hubbard. Armur E.. ri. Marine Gate, Marine Parade. Brighton 7. England Hubbard. Harry \Y. ij). 315 Jerterson Dr.. Mt. Lebanon. Pitts burgh lo. Pa. Huber. George 5. 15, 3 Amboy St., Allstun 34. Mass. Huber. Harold V'.. 1300 Ranch.) Rd.. Arcadia. Caiii. Hubler: Wiliiam G. . Lakercld Research. Lid,, B. x 450, Lakefieid. Ont.. Canada Hudson. Charles J.. Norton Co.. Worcester. Mass. Hucttig. Fred R. iS). 14--19 Chandler Drive. Apt. D-15. Fair Lawn. N. J. Huffcut. Harold W.. al Parnev St.. Andover. N. V. Hudcrd Machine Work, Inc. i J. A. Hclget), Redondo Beach. Caiii. ! Hughes. Georg; B.. 1234 W. Seventh St.. Erie. Pa. Hughes. John H.. 111! Laird Ave.. Parkershurg. W. Va. Hughes. Walter 334 Putnam Ave., Zanesville. Ohio Hughes. Walter R. (J). 930 E. Harrison St.. Springfield. Mo. Hull, A. E- Pottery Co. (Gerald F. Watts), Crooksville. Ohio Hull. Walier'|A..* Box 367. Norris. Tenn. Humcink. Michael. Jr. (S'i, !3 Prescott St.. Cambridge. Mass. Hummel. Floyd A.. School of Mineral Industries. Pennsyl vania Srste Collepe. State College. Pa. Humme1. Richard. 615 Olympia Rd.. Pittsburgh 11, Pa. Hummel. Rnv< 4318 Grantlev Rd.. Toledo 12. Ohio Humphrey, Kenneth F., 79 Church 5t., Apt. 1. Kitchener. Ont.. Canada Humnhrevs. R. D. Mississippi Glass Co., 200 Filth Ave.. New Vnrk 10. N. V. lumphrs'es Mfg. Co. (\V. G. Moore). 201 E. Fifth St.. Mans field. Ohio fund. Oenrire J.. 29 Pine St.. Lackawanna 18. N. V. lungeriord. R. M., 302 Credit Foncier Bldg.. Vancouver. B. C.. Canada > lunsicker, Harold W., 1649 Eiberon Ave.. East Cleveland 12. Ohio lunt. Frank S.. 2494 Pape Dr.. Altadenn. Calif, lunt. Georre.j General Steel Wares. Ltd.. 199 River St.. Toronto. Ont.. Canada [unt. ,_i err.ertj1 ;.. Kimbic Glass Div., Owcns-Iliinnis Glass Co.; Vineland. N. J. turn. John F.J Oretraction. Inc.. "425 Thomas St., Pitts burgh .3. Pa.! lunt. M. K.. Locke. Tnc.. Baltimore 3. Mrt. unter, Charles E.. Box 966. Asheville. N. C. unrer. Richard 3.. H. A. Gardner Labs.. Tnc.. 4723 Elm St.. Eethesda 14. ,Md. untinp. Everett C..* 23 Whitman Ave., East Oranpe. N. J. upnerr. Paul A.. 113 Hubbeil Sr., Canadaiptia. N. Y. urd. Enrpess M.. 506 14th Ave ._ New Brighton. Pa. ursh. Rainh K..*T L'niversitv of niinois. Urhana. III. urst, Edwin J.l Research Dept.. General Ceramics & Steatite Corp.. Keasoev. N. J. rst, Thomas f... 444 Lafayette St., Palmerton. Pa. utch. Herbert T., Box 173, Newark 4. N. J. utchison, Clark. 709 E. Armstrong St.. Frankfort. End. utchison. Clyde 3., Box 225. Sandersville. Ga. jtchiscn R. CL* R. R. 1, Easton Ave.. Bethlehem. Pa. jtt GJenn A.. 'Ferro Enamel Corp.. 4150 E. 56th St.. Cleve land 5. Ohio j Itt, Gordon M!. Canadian Pacific Railway. Rm. 703, Windtor Sta.. Montreal. Que.. Canada rvclc. L. G.. Huvck Construction Co.. 2946 N. 78th Court, ilmwood Park 35. III. att, Edmond P. (S), Dept, of Geology, Phvsieal Science 3Idg,, 3ripharti Young University. Provo. Utah de. Collin.f 747 Forest Rd.. Ruthtred Acres. Bridpeville. 'a. ffe, Reed W.. 84 Mountain Ave.. Summit. N. J. land. J. A., Pacific Coast Borax Co- 2295 Lumber StIhicago 15. Ill: nes. Frank J.T (J), 4 Clyde Rd- Watertown 72, Mass. loo, Joseph F., "Dromore,'' Mapor's Loan. Falkirk, Scottad jfcawa. Yoshio. Box 102, Alfred. N. Y. jc. Allen C., Jr. (S), S3, Meadow Brook Apts., Corning, Y. J .{ Ramon R,, 201 E. 21st St- Owensboro, Ky. lola Clay Products Co. (Otis L. Jones), 68 N. Chicago L Joliet, III. Alexis V. (S). R. R. 1, Box 207, Englishtown, N. J. 29, No. 10 (1950) Ililt. Fred K.. Harshaw Cliciuicai Co.. 1945 E. 97th St.. Cleve land o. Ohio Ilirf. John W., Harsha.v Chemical Co.. 1945 E. 97th St., Cleve land o. Ohio Iliff. Margit. 15333 Cedar Rd.. Cleveland 18. Ohio Illinp. Arno M- 203 Hartwell .Ave.. Cincinnati 15, Ohio Imalis. Oscar. Pittsburgh Plate Glass Co. Glass Div. Re search Laboratories. Creighton, pa. Imhofi. Edwarti J.. United States Glass Co, Glasspor:, Pa. Immediate. Robert R. iSi, 3252 ,V. Palmer S:.. Milwaukee Wis. Imperial Class Corp. (C. J. Uhrniann). Bcilairc, Ohiii Indian Ceramic Society. Dept, oi Ceramics. Benares Hindu University. Benares. India Indiana Giass Co. (Charles L. Gaunt), Dunkirk. Ind. Industrial Ceramic Products. Inc. (W. E. Cramer). 965 W. Fiith Ave.. Columbus 12. Ohio Indyk, Albert D. (S). Ceramic Engineering Dept., North Carolina State College. Raleigh. N. C. Ingersoll. Harry, 3239 N. Tyier Ave.. Temple City, Calif. Ingham. David. 655 Louisiana Ave.. Chester. W. Va. (nnes. David.' 313 E. Indiana St., Perrvsberg, Ohiu Inslev, Herbert.* National Bureau of Standards. Washing ton 25. D. C. Institut du Verre, 34 rue Michel-Ange. Paris (16*). France International Clay Machinery Co. (R. H. McElroy), 1145 Bolandcr Ave.. Dayton. Ohio International Commission on Glass. B. P. Dudding, Re search Laboratories. General Electric Co.. Ltd., Wembley, Middlesex, England Ireland. John. International Tin Research & Development Council. Fraser Rd.. Greeniord. Middlesex. England Ironton Fire Brick Co. (E. F. Myers). Box 4723, Jacksonville 1. Fla. Irvine. George C.,' Canadian Carborundum Co.. Ltd- Niagara Falls, Ont.. Canada Irwin, Joseph T., 1618 Elmwood Ave- Lakewood 7. Ohio Irwin. Phiiip P. Potters Supply Co.. East Liverpool. Ohio Irwin. William W.. Potters Supply Co., East Liverpool. Ohio Isaacs. Richard P- 67-33B 223rd Place. Bayside Queens. N.Y. Itenhour, C. W.. Jr.. Box 1249. Salisbury. N. C. Isenhour. John H..* 215 Confederate Ave.. Salishurv. N. C. Itschner, Robert. Tannenrauchstrasse KVv Zurich 53. Swi-.rer- land Iturri. Gustavo (J). 3ox 90. Trujillo. Peru J Jabbusch. Arthur J.. Clay Products Exchange. Columbus. Ga. Jacket. Roland D.. 200) S. Randolph it.. Arlington. Va. Jackson. A. Curtis.*' 2487 3ryden Rd.. Bexley. Ohio Jackson. James. "Ashgrove.'' St. Andrews Ave.. Bothweii, Lanark. Scotland Jackson. L. P- Mid-West Abrasive Co- Owosso. Mich. Jackson Vitrified China Co. (Philip R. Distillator), 2675 Bailey Ave.. New York 63. N. Y. Jackson, Wharton, 1185 Mary St- Elizabeth 3.. N. J. Jackson. William M. II. 671 Carleton Rd., Westfield. N. J. Jacob. Bernard T- National Crucible Co.. Philadelphia 18. Pa. Jacobi, James H,, 503 Howland St., Fremont. Ohio Jacobi. Paul. 161 Miles Ave.. Syracuse. N. Y. Jacobs, Charles W. F- 135 Linwood Ave- 3uffaln 9, N. Y. Jacobs. H., Box 117. Vereeniging, Transvaal. Union oi South Africa Jacobs, Louis J- Ramitite Co., 2563 W. 18th St- Chicago 8, 111. Jacobs, Richard A- Brockway Glass Co.. Inc.. Brockway. Pa. Jacoby, Harold E.. Gladding McBean 4 Co., 2901 Los Feliz Blvd.. Los Angeles 26. Caiii. Jae. Norman (S'). Box 792, New Castle. Pa. Jaffe. Bernard.! 3023 Wisconsin Ave- Washington. D. C. Jahnke, Otto C. (S), 203 Haddon Hills. Haddon Field. N. J. Jamison, C. Donald. Jr.. 35 Webster St.. Everett, Mass. Janatka, Richard G,, Appomattox. Va. Janke, C. E. (J), 505 E. Joliet St., Ottawa, III. Jansma, Frank. Box 519, Washington, Pa. Janssen. William F- Lackawanna Blvd., Gillette. N. J. Jasani, Mahendra R. (S), 4043 12th Ave., N. E.. Seattle 5, Wash. Jeffrey, Benjamin A- Box 32, Tumacacori, Ariz. Jeffrey, G. H- R- R- 1, Pines Lake. Paterson. N. J. Jeffries, Robert N- 2331 Brooks Rd.. Knoxville. Tenn. Jenkins, Howard F- 235 N. Second St- Jeannette. Pa. Jenks, C. E.. VV. S. Tyler Co., 3615 Superior Ave., N. E., Cleveland 14, Ohio Jensen, Edwin K- 2902 Walbrook Ave., Baltimore 16, Md. Jeppson. George N-* Norton Co- Worcester 6, Mass. Jeppson, John, 45 Metcalf St- Worcester, Mass. 371 Jerger, Joseph, Jr, American Option) Co., Box IJ/, Stamiord. Conn. Jero. Parker (S). General Delivery. Peoria, II! Jerrold. C . 17-9 R. St., NAY, Washington. D. C. Jesscman, Donald S.f 18o D, Hillside Rd, Oak Ridge. Tenn. Jettel. Filip, United Enameiworks & Hardware Factories. National Carp., Prague I. Kozi -4. Czechoslovakia Jew-art. Charles N'., Box 13, North Boston. N. V. Joeckel. Stanley V., American Fused Ouartz Co.. Dover. \. J. Johns-Manvtlle Sales Corp. (J. C. Crawiord. Jr.), 33 E 40th St., New York 16, N. Y. Johns, William D. (5). 107 Natural Resources Bid?.. Univer sity oi Illinois. Urbana. 111. Johnson. Alexander H.. H. L. Brisbane & Wunderlich, Ltd., Lord St.. East Perth. West Australia Johnson. Alton E. (S). 7838 Harwood Ave.. Wauwatosa, Wis. Johnson, .Arnold G.. T. C. Wheaton Co., Millville. N. J. Johnson, A. L.,* Universal-Rundlc Corp., Box 960, Mew- Castle. Pa. Johnson. A. M,, Ross-Tacony Crucible Co.. Taconv. Phila delphia 35. Pa. Johnson. Boyd M., Carborundum Co.. Box 3t>8. Perth Antbuv. M. J. Johnson, Dudley B. (S), 960 N. Court St.. Rockford. 111. Johnson. F. G.. Johnson Brothers (Hanley). Ltd.. Hanley, Stoke-on-Trent. England Johnson, F. H., Sumrnimlle Face Brick Co., Sunimitviile. Ohio Johnson. Fred H.. Jr., Summitviile, Ohio Johnson, George E., Jr.. 599 Lowell Ave.. Cincinnati. Ohio Johnson. Geraid L.. 319 Central Ave., North Hills. Pa. Johnson, Gordon H. (S), 8015 Decker Ave.. Cleveland. Ohio Johnson. Harold C.. Corning Glass Works Laboratory. Corn ing, N. Y. Johnson, James R/ (S). 104 Laurel .Lane. Austin. Texas Johnson. J. A.. Service Engineers, Ltd.. Leek .New Rd.. Co- bridge. 3urslem. Stoke-on-Trent. England Johnson. Lee J., Alexander Rd.. Box 43. Princeton Junction. N. J. Johnson. Leixoy A.. 424 Darrow Ave., Evanston. III. Johnson. Maurice H. tS), 7815 Etiwanda St.. Reseda. Calif. Johnson. Paul V., Structural Clay Products Research Founda tion. 1:5? :2:h St.. >.'. W. Washington 6. D. C. Johnson. Peter D.. School of Mineral Engineering. Univer sity of Washington. Seattle 5, Wash. Johnson. Richard C. (S). 6 Allen St., Hornell. N. A'. Johnson. William A. (S), 3051 Howell Mill Rd. N.W, Atlanta, Ga. Johnston. Archie S. (J). Enameling Dept.. Nashville Div, AVCO Mfst. Corp., Nashville. Tenn. Johnston. H. J. C., Leeds Fire Clay Co.. Ltd.. Wortley, Leeds. England Johnston. James K,, 485 E. Lincoln Ave., Worthington. Ohio Johnston. Philip S., A. P. Green Firebrick Co.. Mexico. Mo. Johnston. R. D.. Box 391. Morris. III. Jones. Cecil M,, II ;S), 551 E. Broad St.. Gainesville. Ga. Jones. Edgar. 436 Old Lancaster Rd.. Haveriord, pa. Jones. Edmund. Jr..' Box 3655. Raleigh. N. C. Jones. Frank L.. Windsor Rd.. Fox Chapel, Pittsburgh 15, Pa. Jones. George A.. Box 45. Alfred. N. Y. Jones. Howard E.. Jr.. 19150 Robson. Detroit 35. Mich. Jones. John W, ill N. Meridian it.. Brazil, [mi. 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 Si, Joliet. 111. J ones. Paul R.. Mineral Industries Bldg, West Virginia University. Morgantown. W. Va. Jones. Richard El, Pittsburgh Plate Glass Co, Research Laboratory, Creighton. Pa. Jones. Robert E. (S), Apt. A-5. 409 Tuscaloosa Ave, Birming ham. Ala. Jones. Robert O, Box 136. Gabbs. Nev. Jones. Maj. Rodney A, Hq. Air Materiel Command. Box 1414. Wright-Patterson Air Base. Dayton, Ohio Jontz, Melvin L,, Melvin I, Jontz Co, 5028 Alhambra Ave, Los Angeles 32. Calif. Jordan. Jacob. 118 Euclid Ave, New Castle, Pa. Jordan, John W,, Mellon Institute. Pittsburgh 13. Pa. Jordan, R'!. E,, Mosaic Tile Co, Zanesville. Ohio Jordan, Roy E, Jr, Mosaic Tile Co, Zanesville. Ohio Jordan, Thomas B, Box 206. Corona. Calif. Jordan. William M, 608 Sumner Ave, New Castle. Pa. Joseph, A.' David (S), Box 128, Alfred. N. Y. Jov Brick Works (J. L. Jova), Roseton. N. Y. Jova, J. L, Jova Brick Works. Roseton. N. Y. Joyner. Bobby L (S). 2320 Oxiord Rd, Raleigh. N. C Judd. Donald M, Jr, fS), 764 Fowler St, N.W, Atlanta, Ga. 372 Julian. H. A, Derr.uih Glass Works, Inc, Box o29. Parkers burg Div, Parkersburg, W. Ya. K Katiey. Frederic L. Jr, Carnegie-Illinois Steel Corp, 334 Atwood St, Pittsburgh 13. Pa. Kahlson. W. 5, General Electric Co, Lamp Dept, Pitney Glass Works. Neia Park 13. Ohio Kaiser. John J. ibn as 5. Carheul. Cuiumbus. Ohio Kalan, Michael. i.K-O Esperanza it, Los Angcies^ 33. Cali:. Kallstedt. C. H, Western United Gas i Electric Co, 50 Fox St.. Aurora. 111. Kalman, Frank R. '.5i, 3094 Neil Ave, Apt. 45. Columbus 1. Ohio Kalousek. George L, 3633 Merrimac Blvd, Toledo 6. Ohio Kamich. Barnet Z,, 11 Garwood St, South River, N. J. Kane. Daniel F, Jr. (Si, Klan Alpine. Alfred. N. Y. Kane. John L.' (Si, 7 Pennsylvania Ave, Dunkirk. N. Y. Kantner. Ogden A, 5o3 Cleardale Ave, Trenton 3. N. J. Kapner, Howard. Sam Tour Sc Co, Inc, 44 Trinity Place. New York 6, N. Y. Kapur, Madan M. iSJ. Diwanchaud Building. 69-75 Sheikh Memoh St, Bombay 3. India Karktianavaia. M. D. (S), Box 254. State College. Pa. "Karlovsky. Edward P. (S). 1007 W. Illinois St, Urbana. III. Kasten. Vernon L,' Three Oaks, Box 84, Jackson, Mo. Katz. Joseph M, o25 E. Filth St, Brooklyn 18. S'. Y. Kauffman. John R," Tuttle & Kift. Inc, 1823 N. Monitor Ave, Chicago 39, 111. Kautz, Karl," 754 Rotch Ave, N.E, Massillon, Ohio Kawaguchi. Tad/ Republic Steei Corp, 6100 Truscon Ave. Cleveland. Ohio Kay, William T,, E. J. Bartells Co, 1212 Sixth Ave, S,, Seattle 4, Wash. Kayser. Julius A, Gladding. McBean & Co, 1275 Harrison St, 5an Francisco. Calii. Keanev. J. C,, 1201 Banksville Rd, Pittsburgh 16, Pa. Kearins. E. F,, National Mortar i Supply Co, 1807 First National Bank Bldg, Pittsburgh 22, Pa. Keat. Paul P. tS), Ceramics Bldg, Rutgers University. New Brunswick. N. J. Kebler. Leonard. Ward-Leonard Electric Co, Ml. Vernon. N. Y. Keeler. Bradley 3, Brad Keeler Artwares. 2940 Delay Dr, Los Angeles -H, Calii. Keener. Harry J, General Color & Chemical Co, Inc, Box 7. Minerva. Ohio Kent. Nelson H. (S). 1444 Oakwoud Ave, Columbus a. Ohio Keifer. Jack. Box -L8. Whittier, Caiif. Keith. L. C, Canadian Ceramic Society. 49 Turner Rd, Toronto '.0. Or.t, Canada Keith. Wendeil ?/ 53 Park Ave, Apt. 3. Worcester. Mass. Keller. Francis. Ptungen. Switzerland Keiler. W. D, 203 Swallow Hail. University of Missouri, Columbia. Mo. Kelley, J. A, Zonolite Co, Travelers Rest. S C. Kelly, Austin J, 324 Glasgow 5t, Guelph. Ont, Canada Kelly, Hal J, 4714 30th N.E, Seattle 5. Wash. Kelly. John V, Kaiser Steel Corp, Box 217, Fontana. Calif. Kelly. Joseph F, 301 Braddock Ave, Lansdowne. Pa. Kelly, William J. (S3. 227 Boyles Ave, New Castle. Pa. Kelsey, V. V,* Winion Farm. Clifford. Va. Kemp. John A, Jr. (J), 1509 Greenwood Ave, Torrance. Calii. Kempe, Robert A, Thompson Products Co, 23555 Euclid Ave, Cleveland 17. Ohio Kempf, William C,,* 28 Homer Place. Metuchen. N. J. Kenagy. Wiiliam L,r Huntingdon Valley. Pa. Kennaday..Clinton R,, R, R. 4. New Castle. Pa. Kennedy. Richard W. (S). 826 Carteret Ave, Trenton, N. J. Kent. Joseph P./ 247 Starr St.. Brooklyn 27. N. Y. Kent. N. Johnson/ Johns-Manville Sales Corp, 22 E. 40th Sl New York 16. N. Y. Kent. William B./ W. S. George Pottery Co, Canonsburg. Pa. Kentucky Clay Mining Co. (W. J. Watkins). Mayfield. Ky. Kentucky-Tennessee Clay Co. (R. C. Meekerl, 307 City Sav ings Bldg, Alliance. Ohio Kepka, George M. (S), Santa Anita Potteries. 3025 Fletcher Dr, Los Angeles 41. Calif. Keplinger. Robert B," 219 17th St, N.E, Canton 4. Ohio. Kerr, Charles H,* 2861 Chatsworth Blvd, San Diego 6. Calif. Kerr. Warren E, Jr, 1108 Highland Ave, New Castle. Pa. Kerr. W. R," Armstrong Cork Co, Box 441. Beaver Falit. Pa. Kershner. William G./ 117 S. 14th St, Olean. N. Y. Kibler, H. W, Southern Potteries, Inc, Box 279, Erwin. Tenn. Kidner, Vernon H./ 325 Cedar Blvd, Pittsburgh 16. Pa. Kiehl. Harry R,, 223 Chemung St, Corning, N. Y. Ceramic BullhtWI Kio*iu Raui lb), Jl Court it. 3ellwure. L. I.. N. Kiilmar. Henry M..I Bldg. lo. ,\|U. 1, Rediicld Village. Metu- vheti. J. Kimble Glass Div, Owens-Illinois Glass Co. ( H. R. Black ). 262'j I >. ,rr it.. Toledo, Ohio Knncs. Crthur W.. .Vjiic.'nu.1 o.ujs U'.td'.'t.'t. 4IJC--o, Granite illily . 212 Sixth Aic.. Pittsburgh --. Pa. Kim;iel. Raymond R. (i). IU4 Franklin St., Urbana, HI. Kimpel. Robert r, 1128 N*. Alameda Ave-, Azusa,^ Ualif. Kinder. Alan J. li), R. R. J, Box 2415. Auburn. Calif. King. Mian. II Wood borough Ru.. London S.W^ la. England King, Burnham \\., Jr.,*' J5o-l Uelsford Rd., Columbus, 12. Ohio 1 King, Charles B., 189 Cecar it.. Corning. K". V. King. Donald F, 210 X. Fairmont Ave, Pittsburgh 6, Pa. King, Lawrence. Vidros Curning Brazil, Rua Marconi, 33, iau Paulo. Brazil King, Maxon H, Hill Blvd.. East Liverpool. Ohio King. R. M,"T Lord Hall. Ohio State University, Columbus 10, O h i o King, Robert G.. 143 N. Center St-. Grove City. Pa. King, Waller F, 567 Cleardale Ave.. Trenton 3. N. J. Kingery. William D. (J). 20b Westgate W., Cambridge, Mass. Kingsley. Charles B., Mississippi Glass Co.. Floretfe. Pa. Kinsman. Bradley Q. i S), Alfred L'niversity, Box BB, Alfred, N. V. Kinzic. C. J..* Box 245, Voungstown, Niagara County, X. Y. Kirchner. Alfred M.. 753 Frick Annex Bldg., Pittsburgh 19. Pa. Kirk. Edwin, C. S. National Museum. Washington 25, D. C. Kirke.ndale, G. A.. Dept, of Ceramic Engineering, New York State College ot Ceramics. Alfred N. V. Kirsch. Alfred J.. 48 Center St.. Hornell. X. Y. Klaus. Irving (S), 202 Handy St.. New Brunswick. N. J. Kleeman, Lee.A. (J), 460 N. Crest Rd,, Chattanooga 4. Tenn. Kleiman, Martin M. W,, 270 Selkirk Ave., Winnipeg. Man., Canada Klein, A. Albert.* Norton Co.. Worcester 6, Mass. Klekotka. Joseph, 2601 Reed St.. Philadelphia^^. Pa. Kleymever. Clifford A.. Standard Brick and Tile Corp.. Evans- viile 19, Ind. Kline. Hugh L.. Corhart Retracluries Co., Inc.. 16th & Lee Sts.. Louisville 10. Ky. , Klinefelter. T. A.,'1 L". S. Bureau of Mines. Box L, Univer sity Ala. j Klocke. Edward J., H. C. Spinks Clay Co.. 1000 First Na tional Bank Bldg., Cincinnati 2. Ohio Knapp, Thomas E.. 1214 Wilmington Ave.. New Castle. Pa. Lir KfCnnapp, William J..r Dept, of Engineering. University of California: Los Angeles 24. Calif. , ! Knauft, Robert W. Charles Taylor Sons Co., Box 53. Annex Sta.. Cincinnati 14. Ohio ' Knechr. A.. O..' 422 Croton Ave.. New Castle. Pa. Knight. E. H., Maurice A. Knight Sons C>., Box 150, Cronks- ' viile, Ghio Knig.at. Frank ?.. Jr..* Christmas, via Wiukelman. Ariz. Knight. George A., Jr., 901 Watson Ave., Winston-Salem 7, N. C. Kaight. M. A., Jr., Maurice A. Knight. Box 111. Akron 9, I Ohio ; Xnight, Maurice A.. `Knight-Ware" I.M. A. Knight. Jr.). j Box 111. Akron 9. Ohio i Knight. Melten A., Central Research Dept.. Minnesota Mint ing & Mfg! Co.. 267 Grove St.. St. Paui 1, Minn, t Knighton. Hey wood J., Apt. 16. 20740 W. Chicago. Detroit J 23. Mich, j : Kaizek, Jan t`0.. Apartado 2729. Mexico. D.F.. Mexico Knoblaugh. Walter C..* 512 N. Washington St., Tiffin 9. Ohio Knowles, Edwin M, China Co. tJ. W. Hepplew'nite), Newell, W. Va. Knowles, Philip S.. 254 Hines Terrace, Maconi Ga. Knowles, William V..* 8905 Champlain Ave., Niagara Falls, N. Y. Knowlton. Donald E., 1027 Sunset Ave.. Zanesville, Ohio Knowlton. Samuel H.. 610 New Center Bldg., Detroit 2, Mich. Xnox Glass Aasociates, Ine. (R. R. Underwood). Knox. Pa. Knudsen. Friedrich P. (SI, Box 203. Alfred. N. Y. Knudsen. Rolf. Borgestad. P. A.. Norway JCocatnpcu. Sahap, Filyos Ates Tuglasi Fabrikasi, Filyos. Turkey Koch. Daniel O, 512 Sycamore St- Rahway. N. J. Koch. Frank A., 21 E. 12th St.. Cincinnati 10. Ohio h. M. R, Dept. of Fine Arts, Omaha University, 60th 4 Dodge S's.J Omaha. Neb. h, William J., 1518 Eastview Ave., Apt. 9, Columbus 12, Ohio ik. Jiri, Hradec Kralove I. Labslra kotlina 977, Czecho slovakia hler, W. A.,f Mineral Industries Bldg., West Virginia University, Morgantown, W. Va. fcot, 29, No! 10 (1950) Koenig, Charles J.,** Er.gr. E*p*. ita., Ohio State University, Columbus JO, Ohio Koenig. E. \U. Carolina Mineral Cu.. Kuna, X. C. Koenig. F. J. M., 602 W. M3in it.. Dundee, 111. Koemg John H.,** Rutgers Univcrsuv, School of Ceramics, New Brunswick. X. J. Kogan Sel'e 362 Filth Ave.. \*cw Vork !. .V. V. Kohl. Hans, --eerbachstr. 11/. Frarkturt A. M., Gcrrr.anv Kohler Co. 11 j. P. Gavin), Kohler, \V i s. Kohler. Anthony M., Babcuck a- Wilcox Co, S3 Liberty St New York 6. V Y. Kohman. Girard T., 153 Ashland Rd.. Summit. X. Kohn, Joseph. Universal Dental C.... -iiJth & Brown Sts.. Philadelphia 39, Pa. Konne, Frank H,, LOO Third Ave.. New Brighton. Pa. Corp. (J. H. Shoemaker), 3105 E. Grand Blvd., Rm. 217, Detroit 2, Mich. Kolln, Vtr illiam K. (S,i, 389 Hickory Ave., River Edge, N. J. Konopicky, Kami Ho. Ausirian-American Magnesite Co.. Radenthetn, Carintnia, Austria Konrad Howard E. (Si. 927 S. 22nd St.. Columbus. Ohio Kooij. K., Chamotte Lr.ie N. V*., Tielerweg Gelderma/sen, Holland Koos, E. K./ Sterling China Co., East Liverpool, Ohio ^S^^1*33' *nc* lo. Pa. Ceberknight), Box 8255. Pittsburgh Sappers Co, Inc. (Carl D. Ulmer), Research Dept. Koppers # Bldg.. Pittsburgh 19, Pa. Kora, \osio, 2-chome, Katsuyama-Cho, Yahata, Fukuoka, Japan Kosematoglu, Avni (S). 51 W. Kenworth Rd., Columbus. Ohio Koshuha, Walter J, 109 E. Pasadena Rd,, Oak Ridge. Tenn. Koupal. Walter G.. Pittsburgh Plate Glass Co., Clarksburg. W. Va. Kowal. Leo B. (J). Canadian Pittsburgh . Industries, Ltd, Napoleon St, St. Laurent, Que, Canada Kowalka. Warren R, Libbey-Oweits-Furd Glass Co, 1701 E. Broadway. Toledo 5, Ohio Kraft, C. W, Kraftile Co, Niles. Calif. Kraft. Donald E. (S), Neoga. 111. Kraft. Gerald G, Kraft Chemical Co, 917 W. 13th St, Chi cago 3. III. K.-a::. Ralph G . R. R. 2. Lei-.int. Ml. Kraftile Co. fC. W. Kraft), Niles. Calif. Kramer, William M, Adamston Flat Glass Co, Clarksburg. W. Va. Kraner. Hobart M," Research Dept, Bethlehem Steel Co, Bethlehem. ?a. Kravitz. Davie, Regal China Co.. 206 North Ave, Antioch. Kreger, John M, 123 Prospect St, Y/oodbridge. N. J. Krehbiel. Frederick K,, Accurate Pvrometric Cone Co, Pataskala. Ohio Krehbiel. H. O, Accurate Pvrometric Cone Co, Pataskaia, Ohio Kreidl. E. L, A. D. Little, Inc, 20 Memorial Dr, Cambridge. Mass. Kreidl. Norbert J, 40 Milford Rd, Rochester 10, N. Y. Kreidl. Werner H,, Vereintgte Chemische Fabrtken. Kreidl Rutter 3: Co, Sebastian Kohlgasse. Vienna XXI, Austria Ki^tschmar. tamest. E!ec:ro-Phos Slag Co, 20 S. Central. Clayton 5. Mo. Kretzmer. Minor G,, Jr, Quinebaug Conn Krje*el- 'Vi,Iiam VV -f Cra">ic Engineering Dept, Box 5326, State^ College Jjta, Raleigh, N. C. Krill. Karl E. (Sj, Engineering Experiment Sta.. Ohio State University. Columbus 10. Ohio Krishna. Murthy M. fS), Box 62, Alfred. N Y Krochmal. Jerome J. (S). 723 Spring St.'.VAV, Atlanta. Ga. Krogstie. Lars 3, Fredrikstad. Norway Krucsi. Paul J, American Lava Corp, Chattanooga 5, Tenn. Kruson. Joseph H, 79 W Main St, Frostburg, Md. Kuchler. H. E. 1. du Pont de Nemours & Co, Inc. Elec- trochemica/s Dept.. Wilmington 98, Del. Kuechler. A. H.t 27 Carson St, Phoenixvilie. Pa. Kunzman, Edward E,,f 701-A Park Ave, S. Pasadena. Calif. Kupinski, Thaddeus A. (SL 515 E. 11th Ave, Tarentum. Pa. Kuppenheimer. Jane B,, 1130 Laurel Ave, Winnetka. III. Kurtz. Edward F. fj). 1105 Marshall Ave, Richland. Wash. Kurtz. Peter. Jr. (S). 103 W. 14th St, Apt. 204. Rolla. Mo. Kyanit* Mining Corp. fGene Dixon). Cullen. Va. Kyle. H. Clinton, 34 Radium St, Pittsburgh 14, Pa. Kyonka, Joseph C,* 310V. E. Green St, Champaign. 111. L Laboratorio Quimico Nacion.l, (Jorge Ancizar-Sordo). Min isters de Minas y Petroleos, Apartado 2577, Bogota. Colom- 373 Lachmap, Irwin M. iS.i, 32 N. t_*.--ip Circle. Roosevelt. N. J. Laclede-Cbristy Co. (,L. C. Hewitt). -CO: Ridgewood Ave.. St. Leu: s lo. Mo. Laconic!-. Sixto G.. Porcelana Americana S. A.. San Julian v Andes. Loinas de Zamora. F. C. N. G. R,, Argentina Laibl. Frantisek, West Bohemian Glass works. National Corp, Doini Sychov. Cacchoslovakia Laird. Charles,' Malvern Brick A Tiie Co., 3ox 355. Mal vern. Ark. Laird. Edward W. tji. 901 Main St.. Malvern, Ark. Laird, Sober: K, American Radiator A Standard Sanitary Corp.. 15-41 S. Seventh St.. Louisville. Ky. Laird. Stanley M,, Calle 2121 Apt. 3. Vcdado. Havana. Cuba Lakoisky, Charles. Art Dept.. Bowling Green State Univer sity. Bowling Green. Ohio Lambe. C. M.,r 2319 Thayer St.. Evanston. III. Lambele:. Clarence A./ Ceramics Dept., Rutgers University. New Brunswick, .V. J. Lambertson. Wingate A.. Argonne National Laboratory, Box 5207. Chicago 80. HI. Lambic. J. M.. Findlay Clay Products Co., Washington. Pa. Lampman, Charles M., Jr./ 3225 5. Clair Ave.. East Liverpool, Ohio Lanuauer. Peter de. Madero 2674, Marlines. Buenos Aires. Argentina Landback. Charles R., Hill Blvd.. East Liverpool. Ohio Landes, Orville (S>, 226 Filth St.. Niagara Falls, N. V. Lar.drcn.. Rai'ael, Jr., 22 Corning Blvd.. Corning, N. V. Lane. George J, Edgar Plastic Kaolin Co.. Metuchen. N. J. Lane. Richards 0.,T 878 White Lake Rd,, Munith, R. R. I. Mich. Lang. George F., Carr-Lowrey Glass Co.. Box 356. Baltimore 3. Md. Lang. Samuel G.. 1230 Hayward Ave., Cincinnati 26. Ohio Lang. S. M, 3512 13th St.. S.E.. Apt. 4. Washington 20, D. C. Lange. James M/ (J). 56 Pennwood Dr., Trenton. N. J. Lange. Louis A., Service Associates. 641 Hawthorne Ave., S. Milwaukee. Wis. Langer. George B.. 1415 Nr. Bristol, Santa Ana. Calif. Langroc. Kasimir. 462 Locust Terrace. West Hempstead. N.Y. Lanier. 'A illiam S.. Babcock A Wilcox Co.. Old Savannah Rd., Augusta. Ga. Lnnnes. Eugene M..' 1001 Yearling Rd.. Columbus. Ohio Lapp Insulator Co.. Inc. (K. E. Stetttnius). Le Roy. .V. Y. Lapp, Grover W.,* Lapp Engineering Co.. 68 W. Main St.. Le Roy. N. Y. Larkin. Paul G., Larkin Tile Co.. 1651 Pomona Ave.. San Jose 10. Calif. Larson. Rosemary B., 534 Catalina Dr.. Newport Beach. Calif. Larsen. Silas B. (S3. 816 S. Olive, Mexico. Mo. Lassma.-i. Benjamin. Benjamin Lassman A Son. Oliver Bldg.. Pittsburgh 22. Pa. Laccaford-Marble Glasa Co. i W. R. Benr.ett), Box 4/07 Florence Branch, Los Angeles 1, Calif. Latimer. Glen H.. 202 Hancock Ave.. Norristown. Pa. Latimer. Horace L..' Box 126. West Lafayette. Ohio Lau. Sik Kei, Great China Electric A Ceramic Co.. 204 Arn- hold 3ldg, 320 Szechuen Rd.. Shanghai, China Laube. Francis H., Jr.. Freeport Rrick Co.. Freeport. Pa. Lauck. Donald G.. E. J. Lavino A Co., 1819 Oliver Bldg.. Pittsburgh 22. Pa. Lauenstein. Milton C,, Jr.. 179 St. Nicholas Ave., Worcester. Mass. LaugbILa. Homer. China Co. (J. M. Wells). Newell. W. Va. Laughrey, James C. (J). 1007 Fourth St.. North Braddock. Pa. Laurie. Dominic/ Titanium Allov Mfg. Co.. Niagara Falls. N. Y. Lavino. Edward J., II (S3, Phi Kappa Psi. State College, Pa. Lawhead., Creighton M., 43 W. Sixth St.. Corning. N. Y. Lawless. Emmett A., Jr. (S). 414 NAV. Third St.. Mineral Wells. Texas Lawrence. Frederick P.. Edwin M. Knowles China Co.. New ell. W. Va. Lawrence. Ralph V.. 3815 King Lane. San Mateo. Calif. Lawrence, Walter F., Jr./ 18 Yale St., Apt. C. Nutley, N. J. Lawrence, Willis G., New York State College of Ceramics, Alfred. N. Y. Lawson. Alexander E, Jr. (S3, 122 Osborne Lane. University Heights. New Brunswick. N. J. Lawson. Louis. Jr., West Virginia Pulp A Paper Co.. Develop ment Dept.. Charleston, S. C. Lawson. Robert W,, Box 369. Erwin, Tenn. Lawton, A. V., 367 Harden St., Antioch, III, Laxton. Wilbur, 126 Market St.. Zanesville. Ohio Layne. Fred A. (S), 2819-A Rio Grande. Austin, Texas Layton. Donald R. (S), 801 E. Maiden St, Washington, Pa. Lazar. Paul. 1853 Champlost Ave., Philadelphia 41, Pa. 374 Lcavy. Joint C. :>4 Nether-.:ood Ave, Plamiield. N. Le Sell. Roll C.. Abo Kakeifabr-.k. Slultsgataii 52. Abo. Fin land Leberknigr.t. C. E.. Rupp Glass. Inc., Box 3255. Pittsburgh IS. Pa. Ledbury. Walter S). of Sixth St., New Toronto. On:. Canada I.eddy. Robe.-: M./ Box 128. Hammonton. N. J. Lee Clay Products Co, Inc. i Martin S. Bour.e!, C'.earhciii. Ky. Lee. Gordon W, R R. 1. Yard'.ey. Pa. Lee. Haricv C.. Basic Reiractories, Ir.c.. 345 Har.na Bl.lg . Cleveland 15. Ohio Lee. P. William.' 205 F.hnwoud Blvd.. 't ork. Pa. Lee. Virgil J., 726 Laiayette St.. Jetterson Ci:v, Mo. Lees. Arch A.. 411 Avon Dr.. Pittsburgh 16. Pa. Le Heron. Harold, Etablissemems Porcner. L sines de Kevin. Ardennes. Franc; l.eibson. J. 5./ Porcelain Mfg. Div, General Electric Co.. Schenectady 5. N. Y. Leiby, Fred E, 73 E'.mwood Ave.. Rye, N. N . Leighton. M. M,' State Geolugical Survey. 121 Natural Re sources Bldg.. L'rbana. III. Leisey, William 3.. Box 181. Watsontown. Pa. Leitten, Carl F.. Hawkins Ave.. Hamburg. N. Leland. John A. i5>. 2132 Sunset Dr., Antes. la. Lelivclt. J. W, Nash-Keryinator Corp.. 1545 Clyde Park Ave. S.W.. Grand Rapids 9^Mich. Lemberg. Sanford (Si. 15 Clover St., Elizabeth. N._J. Lemmerman. Paul C.. Grasscili Cr.cmicais Dept., c, I. -iu Pont de Nemours A Co., National City Bank Bldg.. Cleve land 14. Ohio . LeMunyott. James S., 250 Wayne St., Mansfield. Ohio Lenchner. Theodore.' Vitro Mig. Co., 60 Greenway Dr.. Pitts burgh 4, Pa. Lenz. Vernon W.. 143 Quentin Rd. S.. Apt. B, Newark. Ohio Leopold. Jean H.. Leopold A Cie.. Pfaffennonen. (Bas-Rin), France Lepie. Myron P, 222 Centre Ave.. New Rochelle. N. V Lesar; Albert R.. 408 Yale St.. Mexico. Mo. Lessl, Matthias. "Smalteria e Metallurgica Veneta.'' Bas.ano del Grappa. Italy Lester, Frank P,, Litestar. Inc.. Ceramics. 39-29 29th St.. Long Island Ci:y I. N. Y. ... _. Lester W Ronald.' Dominion Minerals. Inc.. Ptney River. J Va. ,, Letort, Marc Y.. Centre National d'Etudes et Rechcrches Ceramiques. 16 Rue Lalo. Parts 16, France^ Leumi. I go. 4300 Cromwell Ave.. New York 52. N. Y. Levengood. W. C. 2140 Robinwood Ave.. Toiedo. Ohio Levi. Ormor.ce S., Verd-A-Ray Corp., 615 Front 5t.. Toledo 5. Ohio Levine. Irving Lionel (S3, 333 Jersey St.. Staten Isiand I. N. Y. Levy. Dorothy. 1032 Lincoln Ave.. Highland Park. III. Levy, Raymond H. (S3, Box 701, Georgia Institute of Tech nology. Atlanta. Ga. Lewenz. H. \V, General Ceramics A Steatite Corp.. Keasbey, N. J. Lewis. Albert D.. Kimble Glass Div.. Owens-illinois Glass Co, Vineiand. N. J. _I Lewis. Charles F, Volunteer Portland Cement Co., Knox-- ville, Te:tn. Lewis. Evan J,, 218 Watauga Ave.. Corning. N. Y. Lewis. Gordon E./ Gien-Gery Shale Brick Corp, Box 1299, Reading. Pa. Lewis. Howard S, Wahpeton Pottery Co, Wahpeton. N. Lewis. J. H, Blue Ridge Glass Corp, Kingsport. Tenn. Lewis. J. M,, Ahingtion Potteries. Inc, Abingdon. III. Lewis, Mary J. tJ3. 74 Elmendori St, Kingston, N. Y. Lewis. Wager. 54 Poquonock Ave, Windsor. Conn. Lewis. William C, Big Flats. N. Y. Libbey-Owens-Ford Glass Co. (George B. Watkins). 17 E. Broadway. Toledo, Ohio Lied. Robert C. (S3. R. R. 2. Northport. Ala. Lieder. Phillip H, 110 Farview Ave, Norristown. Pa. Liederhach. William H./ 114 .Vewman St, Metuchen. -V. Lien-Pao. Liu. 3 Chi-Hsing-Nan-Li, Pao-Chi Rd, Tientsi 1. China Lies. William J, 13 Thomas St, Williamstown, Mass. Ligon. Elmer R, W. S. Dickey Clay Mfg. Co, Box 6, P: burg. Kan. Lillie. Howard R..* 191 Delevan Ave, Coming, N. Y. Lilly. Adam. 3010 Hohman Ave, Munster, Ind. Lillywhite. James 5, SOI Earlham St, Pasadena 4, Ca Limes. Robert/ Mellon Institute, Pittsburgh 13. Pa. Lin, C. -Y, Union Ceramic Industries Co, Ltd, 202-212 Yi Kuh St, Kowloon. Hongkong Lindberg, August G.. Jr, 9340 S. McVicker, Oak Lawn. Ceramic Bulls Liti'icufccryi:r.. 1-1., [L.mhay Clan* 'A orks. L:d, Bcm.hay lo. India Lindci.ina 1. Jc.hr. I Si. '.37 W. Lena Ave., Freeport. N. V. Linder. Cyrii 5.. ! IJf.* Park St.. Tarcmum. Pa. Lir.dcuiot, C'.aude A.. Jr..' 15''/, Cherry St.. Franklinvii'.e. .V. i . Lir.g. Theudjrc (Merg-chang*. 39 Berriman St.. Brooklyn 3. N Lir.n. Duard C, J r.? t 5 . Landis. N. C. Lima. E. H.."' 5cio-Ch:o Pottery Co, bcio, Ohio Linwo-d. Sidney H . Stackpolc Caraon Co.. St. Marys. Pa. L'na. .Arthur. Climax Moivhdenum Co.. 5C0 Filth .Ave.. New York IS. N. Y. Lipar.ovieh, August J, 7930 St. Lawrence .Ave.. Pittsburgh 13. Pa. Litchf.eid. Nancy IS). Box H-2, Alfred. N'. Y. Little. John M. IS), Box 5-141, Virginia Tech. Sta.. Blacks burg. \'a. Littleton. Joseph C.. 231 Dclevan Ave.. CorninR, Nr. Y. Littleton, J. T .* Corning Class Works. Corning. S'. Y. Liu. Kunleor, 31 Harrison Ave.. Boston. Mass. Livovieh, Andrew F, 4941 Baring Ave.. E. Chicago, Ind. Lobauch. Frank E,' 1052 Sherman Ave.. Plainfield. N. J. Lochridge. James F,T 1001 Linn Dr.. Apt. 1, Cleveland 9. Ohio Locke. Inc. ( F. A. Rose), Box 57. Baltimore J. Md. Logan Clay Products Co. (E. K. Sheffield). Logan. Ohio Lohman. Charies P, Pemco Corp, 5601 Eastern Ave.. Balti more 24. Md. Lonueree. Joseph W., Jr. (S), 539 Taylor Rd., University Heights. New Brunswick. N..J. Long. 3ernard. 3 Rue de Copenhague. Paris 8. France Long. George R, Frigidaire Div,, General Motors Corp.. Dayton 1. Ohio Long. John V., Solar .Aircraft Co.. 2200 Pacific Highway, San Diego 12. Calif. Long. Luther L., Owens-Corning Fibcrglas Corp.. Newark, i Ohio Long. Ollie 1224 44th Place. S.E., Bradbury Heights. W'ashi ington 19, D. C. ,ong, Robert. American Porcelain Enamel Co.. 1233 Keating Ave.. Muskegon 26. Mich. ,ong, Robert J . 20 E. Southern Ave.. Muskegon. Mich. ,ong. Robert R, \V. f. Tycer Pottery Co.. Roseville. Ohio .onger.ecker. Robert I. (S'), Alpha Chi Sigma. State College. 'Pa. (Ongiriti. R. K. (S). Freeport Brick Co.. 314 High St.. Free port. Pa. engweii. 3. E, Republic Steel Corn.. 1422 Republic Bldg, Cleveland i. Ohio orey, Frederick D. ;S). 39 Meadow Brook Apts., Corning. TN. Y. orey. G. Ed yin (S). !4i) Harris Ave.. Freeport. I.. I.. N. Y. oich. Lucille L. 'Si. i'51 Haehcrle Ave.. Niagara Falls. L.v. Y. uden. R. H..T McGean Chemical Co.. Midland Bldg., 101 ^Prospect Ave. N.W, Cleveland 15. Ohio atiaa Mfg. iCo. C. '.V. Gerster). East Liverpool. Ohio *e. L. G,, National Lime and Stone Co., First National 3ldg, Findlay. Ohio veland. Edward W.. 1240 Teaneck Rd.. W. Englewood. N. J. veil. Robert 3. (S). 13-21 C Snerber Rd.. Fairlawn. N. J. venbach. J.. Saint-Roch Co.. 50 Rue du Luxembourg, Brusels, Belgium ve. Earl C. (S), 2376 N. 76th St.. Apt. 2, Milwaukee 10. /is. ve. George K,f Charles Taylor Sons Co.. Heights-Rockeeller Bldg.. Rm. 210. Mayfield at Lee. Cleveland 18. Ohio ve, Gerald E. (St, 1318 Prospect. Snringneld. Mo. ranee. Robert TA (J), General Tile Co.. El Segundo. alii. ts, Joseph N.. 1431 Broad Blvd.. Cuyahoga Falls. Ohio Svigsen, C. F.. Den Kongelige Porcelainsfabrik 4 FajanceIbhken .Aluminia A/S, Copenhagen F., 45 Srnallegade. rimark Hg. David W. (Si. Alpha Chi Sigma. Pennsylvania ate College. State College, Pa. trig. Urban W,, R. R. 2. Alfred. N. Y. ders, Roland, 2341 Bradford Rd.. Cleveland Heights 18. bio king, W. CA (J). North American Refractories Co.. Na sal City Bank Bldg.. Cleveland 14. Ohio Is, J. C, Worthington Pump 4 Machinery Corp.. Ransome dustrial Mixer Div.. Dunellen. N. J. t. Daniel W,f Barbertown Rd., Frenchtown, N. J. Stanley E.. 4 Lee St., Worcester. Mass. ' ert. Bernard C. (Si. Box 1J3. Alfred, N. Y. Thomas E.A Globe-Union, Inc., 900 E. Keefe Ave.. Iwaukee 1. Wis. 29, No. 10 (19501 Lund. H. Howard (J). 322 N. Brockwav St.. Palatine. II.. Lund. L. Howard oi. 212 Chalmers St.. Champaign, 111. Lund. Melvin S . 42o E. State St.. Alliance. Ohio Luiu. William. Inglewood 13. W. Crescent, iucyd Green. Stoke-.:i-Trer.t. Stafford. England Lupti it. Oaie U. (Si. Box 2ot)l. Georgia Institute of tech nology. Atlanta. Ga. Lutton. X. W.. National Plumbing Pottery. Ir.c, Dearhorn. SI.. Zanesville. Ohio Lute. Gerald t.l >. 1205 S. Main it.. Normal. III. Luz. Robert A... Jr.. 32b Grady Drive. Woodbridge. N. J. Lyle. Aa.-i ii K,* 21 Cumberland Rd.. W. Hartford 7. Cjnn. Lynch. Eugene Ik. Dept oi Ceramic Engr, 204 Ceramics Bldg.. Urbar.a. 111. Lynch. Janies F, Battelle Memorial Institute. 505 King Ave, Columbus. Ohio Lynch. John F. iSi. cOo Walnut St.. Rolla, Mo. Lynsavage, Walter F. (S). 420 E. Prospect Ave.. state Col lege. Pa. Lyon. John B.. Tuthill Building Material Co.. 138th and Racine St.. Blue Island. III. Lyon. Kenneth C..* Research Laboratories. Armstrong Cork Co.. Lancaster. Pa. Lyon, Louis. Jr.. 425 Park Bldg.. Pittsburgh 22. Pa. Lyons. Clifford T.. 2308 West Ave. J., San Angelo, Texas Lyons. S. C.. Georgia Kaolin Co.. Dry Branch. Ga. Lytle. Jack A. (S). 2101 Carolina Ave.. Lima. Ohio Lytle. W. O, Pittsburgh Plate Glass Co.. Research Lab.. Creighton. Pa. M MacAlpir.e. William M.. 357 E. Main St, Somerville. N. J. MacDonald. James E., 713 Highland Ave, Latrobe. Pa. MacDonald. R. \V,T 128 Poplar Ave, Wheeling. W. V a. Mack, Edward W, III, 77 .Mack St.. Windsor. Conn. Mack. Rovce K, Babcock A Wilcox Co, Old Savannah Rd, Augusta. Ga. Mackasek. Edward. 1010 Vermont Ave, NAV, Washington 5. D C. Mackenzie. James, United Steel Companies. Ltd, Research & Development Dept.. Swindell House. Moorgatc. Rother ham. England MacKer.zie. James T, 3ox 3603. Birmingham 2. Ala. MacNairr, J. s, Pfaudler-Werke A. G, schwetzingen. Baden. U. S. Zone. Germany MacPherson. C. R. (S), 3119 Coronado Rd, Kansas Utv 2. Kan. Madden. Jesse F, Page-Madden Co, Inc, 76-96 second St.. Box 110. Mineola. N. Y. Madden. Robert C, 202 s. Palmetto Ave, Fontana. Calit. Middock. A. M, '-Vishington Crossing, N. J. Maddock. J. B.A Paper Makers Importing Co, Inc. 4g S Second St, Easton. Pa. Magid. K. 5.A American Radiator A Standard Sanitary Corp, Box 907, Trenton 5. N. J. Magnuson. J. W,, 345 S. Race St, Denver. Col. Maguire. J. Frank. Dept, of Public Works, Municipal Bldg, New York 7. N. Y. Maharfv, Wendel A, Owens-Illinois Glass Co, 601 36th Ave, Oakland 1. Calif. Maneshwary. Ved PA IS), Ceramic Engineering Dept, Missouri School of Mines 4 Metallurgy, Rolla. Mo. Mahier. Lois W, R. R. 4. Baton Rouge, La. Mahoney. Frank B, Richmond Radiator Co, Uniontown. Pa. Mainhardt. Robert fS'>, 220 Aloha. Apt. 302, Seattle. Wash. Maja, Jaive A. (S), Howard Universitv. Box 18. Washington. D. C. Majeske. Joseph, T. C. Wheaton Co, Millville. N. J. Majumder. Benoy L. IS), The Priory, Church St, Leather- head. Surrey, England Malcolm. Richard B. (S). 165 Walnut St, Morgantown. W. Va. Malkin. \V. R,, B. F. Drakenteld 4 Co, Inc, Box 267, East Liverpool. Ohio Mallonn. A. R,, Republic Stamping 4 Enameling Co, Box 471, Canton 1. Ohio Malm. Arthur T,r 233 Beverly Rd, Worcester 5. Mass. Maloney. William F. (S'). 157 Seneca St, Homell. N. b. Malsch. Werner. 402 Sixth Ave, Belmar, N. J. Malysiak. Chester. 43.6 W. Bancroft Ave, Toledo 2. Ohio Mangsen. Gustav E.. 630 79th St, Niagara Falls._ N. Y. Manker. Wiiliam. Padua Hills. Claremont. Calif. Manning. R. Dougias. Harkcr Pottery Co, East Liverpool. Ohio Manousek. Miloslav. Czechoslovak Glass Works, Prague 3. Revolucni 2, Czechoslovakia Manring, William H, Ball Bros. Co, Muncie. Ind. Mansfield Sanitary Pottery, Inc. (Perry E. Draper). Perrys- ville, Ohio 375 Mansun. M. E," Box 1480, Palm Springs, Calif. Man/. Oscar E. iS, 758 Eighth it, Medicine Hal. Alta., Canada Marbaker, Edward E,* Mellon Institute. Oakland Sta., Pitts burgh li. Pa. March. Joseph W, Nova Scotia Technical College, Halifax. N. 5.. Canada Marcowka. Chester A., A. O. Smith Corp. .15.13 N'. 37th St.. Milwaukee. Wis. Marcus. Leon iS), Box 33b. Alfred. N. V Margolis. David. 339 E. JJrd St., New ^ ork lo. N. Y. Marker:. Fred.. '3'.54l Aberdeen Rd, Rocky River 16, Ohio Marquis, lonn E., Pemcn Corp.. 5oOI Eastern Ave.. Baltimore 24. Md. Marsh. Frank L, National Cvpsum Co.. Clarence Center, N. Y. Marshall, Darwin (S>, Box 262, Alfred. N. Y. Marshall. Paui A., 1201 Cherry St.. Brockway. Pa. Sfarshall. R. V.'.. Caribbean Development Co.. Ltd.. Champs Fleurs. Trinidad. British West Indies Martin, Francis \V., 101 Hornby Dr.. Painted Post. N. Y. Martin, Frank B., E. J. La vino & Co., Box 29. Norristown. Pa. Martin, George A. (S). 420 S. MacArthur St.; Macuinb. 111. Martin. George D., 612 Colorado Ave., Baltimore 10, Md. Martin, Haze! 5., 629 W. 105th St., Los Angeles 44, Calii. Martin, H. C- Carborundum Co., Niagara Falls. N. Y. Martin. James K, 1068 Helen Ave., Lancaster. Pa. Martin. John R.. Jr., Monongahela Power Co.. Wellsburg. W. Va. ' Martin. Leonard A., Martin Ceramic Supply Co.. 8901 Rainier Ave., Seattle 8. Wash. Martin. Ralph H.. 2300 E. 52nd St.. Los Angeles 11, Caiif. Martin. R. F., 1016 16th St., Apt. 81. Washington 6. D. C. Martin. Robert O., West Mever Ave., R. R. 3. New Castle. Pa. Martin, Wesley G.,` 6054 N. Kent Ave., Milwaukee 11. Wis. Martz. Joseph A.. 335 Riverside Ave., Weilsvilte. Ohio Marx. LeRov, Denver Terra Cotta Co.. W. First Ave. \ L:matilla St.. Denver 9, Col. Maryland Glass Corp. (L. C. Roche), 2147 Wicomico St.. Eaitimore 30. Md. Maskill, William, Coalbournhill Glass Works. Stourbridge. Worcester, England Mason City Brick & Tile Co. (C. F. Garlandl, Mason City, Iowa Mason. Anthony Y., Hamilton Porcelains. Ltd.. 38 Elain St.. Brantford. Ont., Canada Mason. Mary Ann (J). 8801 Maywood Ave.. Silver Spring, Md. Massenga/e. Gordon 3.. 2740 Porter St. X.W.. Apt. I. Wash ington 3. D. C. ^ Mitaraito. S-A. I.R.F. (M. Mazzetti), Brazil Export Corp.. 30 Broadway. New York 4, N. Y. Matejczvk. John F, 7506 Trevanion _Ave,, Pittsburgh 18. Pa. Mathesius. W. H.. Chicago Retort i t-ire P.rick Div.. Laciedc- Christy Co.. Ottawa, ill. Mathews. W. J , 3601 Santa Fe Ave.. Los Angeles II, Calif. Mathiasen. O. E., Federal Seaboard Terra Cotta Corp., Perth Ambov, N. J. Mathiesen. Eric. A/S Schuu Ravnholnt, Ravnlmlm pr. Lyng- by. Denmark Mathis. Adrian O.. H. C. Spinks Clay Co.. Inc.. Box 829. Paris. Tenn. Matiste. Henry J., 308 E. Fairheld Ave., New Castle, Pa. Matson. Frederick R./ School of Mineral Industries. Penn sylvania Stale College. State College, Pa. Matteson. Gilbert D, Stone House. R. R. 2. Sherburne. N. Y. Matthews, L. G., American Smelting X Refilling Co., 120 Broadway. New York 3. N. Y. Mattvasovszky-Zsolnay, Laszlo. Galumbu-u. 3. Budapest V. Hungary Maupin. Addison/ 5147 Bridgewater Rd., Cleveland 24. Ohio Maupin. Floyd M,,T 815 W. Monroe. Mexico, Mo. Maurach, H.. Deutsche Glastechnische Gcsellschaft. L'ntermainkai 12, Frankfurt A. M.. Germany Maurer, James A.. 5519 N. Lake Dr.. Milwaukee II. Wis. Mauser, H. \V,, Spoorsingel 68, Delft. Holland Mavor, Wilfrid. Ferro Enamels (Canada) Ltd.. Oakville. Ont.. Canada Mavrocordato. Demetre, 14 Rovertou Gali, Athens. Greece Maxsoa, Elwyn L,, 1208 Isabel St.. Burbank. Calii. Maxson. Elwyn L,, 1208 Isabel St.. Burbank, Calif. Maxwell. Laurel H., 18 Perry St.. Kensington. Md. May. L. F., Standard Ultramarine Co., Huntington 18, W. Va. Maybaum, Paul S.. Jr,, 18513 Harvard Ave.. Cleveland 22. Ohio Mayer. Walter S.. Mayer China Co., Beaver Fails. Pa. Mayfield, Manville J. (S), 686 Sherwood Rd. N.E.. Atlanta. Ga. 376 Maynard. Poole. Atlantic Coast Line R.R, 717 (,ru111 Atlanta 3. Ga. Mays. Carlton L. i.S.t, Box A-4JI. Virginia Tech. Sta.. lllu,k%. burg. Vs. Mays. George A.. Niles. Calif. Mazet. Louis. Eorax Frangais. S.A.. 4 Rue de> Matiiurnts Paris (8'i France Mazzetti. M, 5/A. I. R. F. Matarazzo. Brazil Kx|n>rt Corp. 30 Broadway, New York 4, N. Y. Mazzuni. John A.. 2023 Rar.chdaic Ur. St. Louis 31. Mo. Me McAdoo. Don P.. 8431 Loch Raven Hlvd., Apt. A, Towson 4, Md. McAllister. Christopher P. tS), Box 39. Alired, N. \ . McAlpine. Kenneth B.. 1301 Union Ave.. Brackenridge, Pa. McAskill. James I., 311 King St. W,, Kingston. Ont., Canada McBride. ?. B., Porcelain Metals Corp. of Louisville, 1400 S. 13th St., Louisviile 10. Ky. McBurnev. John W,,* 1543 N. Falkland Lane, Silver Spring, Md. McCabe. Richard P.. Ceramics Dept., Rutgers University, New Brunswick, N. J. McCallin. P. J., 3124 W. Tuscarawas St.. Canton, Ohio McCammon. James \V,, Dept, of Mines, Parliament Bldgs., Victoria. B. C.. Canada McCann, D. M./ Akron Porcelain Co.. Akron 14, Ohio McCann. Sidney W,' Pfaudler Co., 1U00 We<t Ave.. Roch ester 11. N. Y. McCarthy. Daniel N., 14390 Sayre St.. San Fernando. Cali:. McCartt. Kenneth C.. 1408 Delaware Ave.. New Castle, Pa. McClelland. Rolland H,T Globe-Union, Inc., 900 E. Keefe Ave., Milwaukee l. Wis. McClune. Charles V./ 2930 Clairmont Ave., S,, Apt. B 6. Birmingham, Ala. McClure. Howard C.. 1808 Hutchins St.. Portsmouth, Ohio McCollom. Perry C.. American Crucible Co.. North Haven. Conn. McComas. Clarence B.. T. C. Wheaton Co.. Millville. S'. J. McConnell. G. F.. Mosaic Tile Co.. Zanesville. Ohio McCord, L. E., Harshaw Chemical Co., 113 John St., Elyria, Ohio McCormick. John M.. 3-A Addison St.. Arlington "4. Mass. McCormick. Stewart W. I.S).210l Ashmore Ave., Chattanooga 5. Tenn. 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,, 76 Division St.. Schenectady, N. Y. McCrone. Elizabeth, 185 Edgewood Ave., San Francisco. Calii. McDanel. Donaici W., McDanel Refractory Porcelain Co, Beaver Falls. Pa. McDanel. Melvin W, R. R. 3. Beaver Falls. Pa. McDermott. James T, Jr, 80 William St, New York 7, N. Y. McDonald. E. F, Ingram-Richardson Mfg. Co, Beaver Falls, Pa. McDonald. Howard A. fSL 121 N. Third St, Alhambra, Calif. McDougal. Taine G,** A C Spark Plug Div, General Motors Corp, Flint 2. Mich. McDowell. J. Spotts.* 4716 Bayard St, Pittsburgh 13, Pa. McDoweil. Samuel J,*T 52 Elm Ave, Metuchen. N. J. McElrnv. R. H,' International Clay Machinery Co, Dayton, Ohio McEvoy. Robert J,T 304 Ceramics Bldg, L'niversity of Illinois. Urbana. III. McFarlane. John A, 3340 Woodward Wav NAV, Atlanta, Ga. McGean. Ralph L, Midland Bldg, 101 Prospect Ave, N/V. Cleveland 15. Ohio McGee. Thomas D/ (J), Research Laboratory, A. P. Greta Fire Brick Co, Mexico, Mo. McGill. William M,, Virginia Geological Survey. Box 14 University Sta, Charlottesville. Va. McGnhan. G. William, Armco Steel Corp, Middletown. Ohi McGolpin. William C,, Rm. 403. 57 Bldor St, W,, Toronto Ont, Canada McGrue, W. M, 3730 Bridgeport Ave, Brentwood 17, Mo. McGurfin. James B. I Si. Box 382. University, Ala. McHardy, Maynard E.. 2401 N. Letfingwell. St. Louis 6, M McHose. L. H, lac. (M. M. McHose), Box 47, Perth Amboy N. J. McHose. M. M,, L, H. McHose, Inc, Box 47. Perth Ambo N. J. McHugh, M. J, Jr, Consolidated Feldspar Corp, 1403 Tree ton Trust Bldg, Trenton 8, N. J. Ceramic Bul Mvlrtusn. Harold \V.. American Window t-iiasa Co.. 1616 Farmers Bark Bids.. Pittsburgh 22. Pa. McIntyre. G. H.."* Ferro Enamel Corp.. -4150 E. 36th St.. Cleveland 5, Ohio McKaig. W. Wallace. Cumberland Steel Co.. Cumberland. Md. McKeand. Irvin J. (Si. Box 3363. Virginia Tech. Sta.. Blacks burg. Va. McSee Glass Co. (Gerald Terrill). Jeannette. Pa. McKee. William D.. Jr. (.S), Missouri School oi Mines Apt. Q-7, Roila. Mo. McKeen. Richard D.. 420 Boyles Are.. New Castle, ?a. McKcndrick. Alexander, Olenboig Union Fire Clay Co.. Ltd.. Gienboig. Lanark, Scotland McKenna. John F. (5), Box CC. Alired. X. V. McKennev. William H./ Lmiversity of North Dakota, Grand Forks. N. D. McKeown, Thomas H., Box 31. Metuchen. N. J. McKibben. Burt H., Niles Rolling Mill Co.. Niies. Ohio McKinley. Theodore D.. E. I. du Pont de Nemours 4 Co.. Newport. Del. McKinnell, James F., Jr., 6219 12th Ave.. N.E., Seattle 5. Wash. McKinney. R. B., North American Refractories Co.. Lock Haven, Pa. McKinney. W. H.. American Radiator Sr Standard Sanitary Corp.. Box 1866. Richmond. Calif. McKinrie. James R.. J812 Huntington Dr. E., San Gabriel. Calif. McKinnis, Charles L.. Jr., 2318 N. High St.. Columbus 2. Ohio McKinstrv, Herbert A. (S), Box 391. State College. Pa. McLachlan. Eugene (S3. 309 Fourth St., TratTord. Pa. McLain Fire Brick Co. (J. B. Blewctt), Engineering Dept.. Wellsville. Ohio McLane, James P., Diamond Pottery Corp., 50-56 China St.. Crooksville. Ohio McLaren. Henry D.. Ferro Enamels i Canada) Ltd.. Box 454. Oakville. Onr.. Canada McLaren. John. J4g Carolina Ave.. Chester. W. Va. McLaren. Malcolm G. (Si. 3-C Alder Dr., Baltimore 20. Md. McLaughlin. John L.. 364 5. Craig Place. Lombard. III. McLaughlin, joseph K.. Red Wing Potteries. Inc.. Red Wing. Minn. McLaughlin. Wiiliam H.. Alsev Brick A Tile Co., Alsey. III. McMahon. John F..,T Alfred. X. V. McMahon. fohn F,, Jr. (S). Box 963. Alfred. N. Y. McMa ster, Harold A.. Permaglas. Inc.. Genoa. Ohio McMullen. John C.. 9325 Riversnore Dr.. Niagara Falls. N. Y. McMurdie. Howard F., National Bureau of Standards, Washt ington 25. D. C. McNamara. E. P..*T 1710 Highland Ave.. New Castle. Pa. McNaughton. Ronald R.. Central Technical Library. Con1 solidated Mining & Smelting Co. of Canada. Ltd., Trail. ! 3. C.. Canada pfcQuarrie. Malcolm C. (S). Ceramics Division. Massachu setts Institute of Technology. Cambridge. Mass. fcRitchie. _Frank H., Engr. F.xpt. Sta.. Ohio State Uni- Wversity. Coiumbus 10. Ohio cVay. T. N..*t School of Chemistry. Metallurgy & Ceramics. L'niversitv of Alabama. L'niversitv. Ala. Ifeacham. Floran L.. 1009 Ronnie Brae. River Forest. III. Hedert. Warren C. 797 Deshlrr Ave.. Columhus 6. Ohio ifeeka. Edward. Robinson Brick 4 Tile Co.. 500 S. Santa Fe Dr.. Denver 9. Col. lecker. R. C..V Kentuckv-Tennessee Clay Co.. 807 City Sav ings Bldg.. Alliance. Ohio ileharg. Laurence. Hazel-Atlas Glass . Co.. 15th 4- Jacob tSts.. Wheeling. W. Va. eid, William J.. University m` Illinois. Ceramic Engineering Dept., Urbana.TIl. [einken. Robert H.. fS). 201 Park Ave.. Keansburg, N. J. leiresonne. Arthur C. (J), J24 Fallis Rd.. Columhus 14. Ohio 'ejia, Lorenzo. Colombia Brewers Industries. Inc- 130 Broadway, 13th Floor. New York 7. N. Y,, click. Nelson M., Nelson McCoy Pottery Co- Ruseville. Ohio cloy, harles L./ 31 North Ave.. Washington. Pa. > crclc. Walter J./ 20 Lowell Rd., Port Washington. L I.. N. Y. redith. Neil F. (S). 214 Lafayette St.. Flint 3. Mich, ricel. V. H- W. A. Riddell Co- American Clay Machinery )iv,, Bucyrus. Ohio Mini. Francesco, Soc. Richard Ginori, Doccia. Colonnata. lorence. Italy iam. Jack G.,1 Box 407. Mundelein. III. riman, Paul H,, D. M. Steward Mfg. Co., Box 510, Chat tooga, Tenn. riman, Seth G., 2722 Lincolnshire Blvd. W., Toledo, Ohio 29. No. 10 (1950) Merritt. Clarence W..' B.ix 464. Alired. N. Y. Merritt. Lester M./ 654 Wilson Ave.. Columbus 5. Ohio Merry. E. B.. Jr./ Merry Bros. Brick & Tile Co.. 415 Masonic Bldg.. Augusta. Ga. Merry. W. H., Eijer Co.. 2035 E. Vermin Ave., Los Angeies II. Calif. Mertens. Frederick G., 7601 Taber Dr.. Har.ley Hills. S: Louis County la. Mo. Merwin. Byron W,, 3505 B. St. Ciair Ave., East Liverpool. Ohio Merz. George. Magr.esita . A.. Caixa Postal 2C8, Beio Hori- zonte. Brazil Messimer. Laverne A..' Holoidtane Co., Newark. Ohio Metal 2c Thermit Corp. (George C. Betz), 100 E. 42nd St- New York 17. N. Y. Metalloy Corp. (Walter M. Fenton), 2560 Rand Tower, Minneapolis 2, Minn. Metcalf. Harry H.. 323 Walnut Ave., 2 B-Salvern Apt., Greensburg. Pa. Metz. G. F.. Hillside Dr.. Farquhar Estates. York. Pa. Metzger. A. J./ Dept, of Ceramic Engineering Virginia Poly technic Institute. Blacksburg. Va. Mexico Refractories Co. (C. A. Smith), Mexico, Mo. Meyer, George R. (S). 3934 Rugby Dr.. Toledo 9. Ohio Meyer. George W.. Glehshaw Glass Co- Inc.. Glenshaw, Ta. Meyer. Herbert T./ 247 N. Indiana Ave- Kankakee, III. Meyer. L. S.. Hydraulic-Press Brick Co., IJ37 S. Kingshigli- way. St. Louis 10. Mo. Meyer. Wiiliam W., U. 5. Tariff Commission. Washington 23. D. C. Meverhofer, E. A.. Meyerhofcr i Co., Zurich (Schweig), Switzerland Meyer-Scholer, Har.s Carl, Spitlerlerstrasse l, Liestal, Swit zerland Meysel. John G., Hudson Silica Co., Ltd., 880 Bay St., Toronto, Ont- Canada Michael. Frank L.. 88 North St.. Dalton. Mass. Michael, Grover L- Jr. f J). 264J Eder Ave.. Highland, Ind. Michel. Howard. 2237 S. Florence Place. Tulsa. Okla. Michel. S.. 9 Rue Deves. N'euilly-S-Seine fSeine). France Middleswarth. Earl T., 407 E. Ninth Ave., Tarentum. Pa. Middleton, George J.. 509 Seventh St- Manhattan Beach. Calii. Midgette. Willard 3./ Demuth Glass Works. Inc., 33 E. Wackcr Dr., Rm. 1436. Chicago L III. Millen. Charles T.. 553 Sherbourne St.. Toronto. Ont.. Canada Miller. B. L.. Royal China. Inc.. Sebring, Ohio Miller. 3ovd C- Miller Equipment Co- Box 1566. Salisbury, N. C. Miller, Edmund K. fS). 2600 Conway. Ft. Worth, Texas Miller. Fred M- The Brynwood. Apt. A-27. Wynnewood. Pa. Miller. Fred VV,, (3 Ryr.da Rd- Maplewood. N. J. Miller. Grant E- 5149 Homewood Ave.. Maple Heights, t Bed ford) Ohio Miller. Haroid. l-OJ S. Tripp Ave- Chicago 23. III. Miller. Howard L./ Libbey-Owens-Ford Glass Co.. Rossiord. Ohio Miller. Janies S.. Paper Makers Importing Co., Inc., 44 S. Second St.. Easton. Pa. Miller. John 3.. Third St- Lewiston. N. V. Miller. John K. (S). Beta Theta Pi. State College. Pa. Miller. John W.. New Castle Refractories Co., New Castle. Pa. Miller. Jorge S.. Casilla 187, Santiago. Chile Miller. O. E- Pyro Refractories Co., Oak Hill. Ohio Miller. Ray R. (S). Bascom. 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., Pittsburgh Plate Glass Co., Columbia Chemical Div.. Barberton. Ohio Miller, Russel A./ 1317 W. Roosevelt Blvd.. Philadelphia 40. Pa. Miller, William A- 210 Buffalo St- Jamestown. N. \. Miller. William C.. 2300 Palmer St.. Swissvale. Pittsburgh 18. Pa. Milligan. Chester F... 4814 Loma Vista Ave.. Los Angeles, Calif. Milligan. Lowell H.. Norton Co.. Research Lab.. New Bund St_ Worcester. Mass. Milliken. Edward C./ 444 W. North Ave.. East Palestine. Ohio Milliken. William M- Cleveland Museum of Art. Sta. E. Cleveland 6. Ohio Millman. Nathan. J. M. Huber Corp.. Huber. Ga. Mills, G. Alexander. Houdry Process Corp., Box 427. Marcus Hook. Pa. Mills. R. Gerald (S), 59 S. Adelaide Ave., Highland Park. N. J. 377 Mills. Robert W ij), 00.7 Evangeline. Louisville 8. Ky Millsom. Waiter C, W. S. L)iekcy Clay Mtg. Co.. O'L Com merce Trust BiJg, Kansas City 6. Mo. Milner. ZJwi:t Z, K. R. 2. Munc.e. lnd. Miner. Reginaf-.l. 1'o.x 25-. Clirf'-voml Beach. N". J. Min*. Joint D, R. 1. Dunkirk. I mi. Minnick. Li John. JOo Boyer Rd, Cheltenham. Pa. Mtnnium. Eyron E.. Erie Resistor Corp., 6-14 W. 13:h 5t.. Eric. ?a. Mir.ton. G.iZ.G Pittsburgh Plate Glass Co.. Research Lab., Creighton. Pa. Minton, H. Collin, Jr.. Star Porcelain Co.. Muirheati Ave, Trenton 9. X. J. Mississippi11 Glass Co. I R. D. Humphreys). 20U Filth Ave., New York 10. X. Y. _ _ Mitchell, Guthrie M, Fairtacts Co., Inc.. Cox J74, Trenton. X J- . Mitchell, Lane.*- School of Ceramic e.ngmeering, Georgia Institute of Technology, Atlanta. Ga. Mitchell. M. P., Fairtacts Co.. Inc.. Box 374, Trenton J, N'. J. Mitre. H. K..' 12 A Rd. E, Jams'nediiur B. N. R,, India Mixer, William G., Jr., 714 James Blvd, Signal Mountain, i (1111. Mociiel, Joint M.. 2 Hawthorne Mill, Louisville. Ky. Muckrin. Isadore. 4624 Pulaski Ave.. Philadelphia 44. Pa. Modigliani.; Piero. Modigliani Glass Fibers. Inc.. 37th Ave. & Vernon Blvd.. Long Island City 1. X. Y. Moebus. C. R, United Clay Mines. Corp., East Liverpool. Ohio Moffat. John. Jr., 7338 Stewart A Gray Rd., Downey, Calif. Moffett. Robert A.. Xorth American Refractories Co., Mt. L'nion. Pa. Mchl, Heimutlt, Fabrica de Lota "La Favorita." S. A-. Palma Xorte 308. Despacho 313. Mexico, D. F., Mexico Mohler. Xeil.F. (S), 1817 Liberty St.. Allentown. Pa. Mohr. J. Gilbert,* Libbey-Owcns Ford Glass Co.. 1701 E. Broadway. Toledo 5. Ohio Mohr, William C..* Westinghouse Research Labs., Ardmore Blvd.. E. Pittsburgh. Pa. Moler Products, Ltd, Hythe Works, Colchester. Essex. Eng land Mailer. J. Aall, Porsgrunds Porselaensiabrik. Porsgrund. Xorwav Mcnack. A. J.. Box 305, Rutherford. X J. Mcneta, Fausto. Via Mambrett. 9, Milano. Italy Mcttg, Lewis E, 3506 Loughborough Place. Chevy Chase 15, Md. Mcnmger. Richard E.. Xewell Heights. Xewell. W. Va. Monks. Frank E, Fuller Label i Box Co, 500 Dargan St.. Pittsburgh. Pa. Monroe. James E, Jr. (S'i. Box J-3. Alfred. X. Y. Mcntagno. Antonio M, 69 Gienmont Ave, Columbus 3. Ohio Monteith. Philip G. (J), J21 X. Lotus. Apt. I. Chicago 44, 111. Mor.terrayor, Ponctano 0, Jr, 5ox 1031, Monterrey, Xueva Leon. Mexico Montgomery-, Earle T,,T Engr. Expt. Sta, Ohio State Uni versity, Columbus 10. Ohio Montgomery, Eldwin C. (S). 1405 B Brackcnridge Apt, Aus tin. Texasi Montgomerv. Robert J.* (Lifet. Box 94. Winter Park. Fla. Montgomery. Thomas B,, Pittsburgh Plate Glass Co, 632 uquesne Wav. Pittsburgh 22. ?a. Moodv. H. Leslie. Hyalvn Porcelain. Inc, Box 460, Hickory, X. C. Moody, Willis E.* (J), 935 X. Main St, Fostnria. Ohio Mooney. Edward L, Alfred University, Research Lab, East Kingston. X. Y. Mooney, Kurt, Kimble Div. Lab, 2626 Dorr St, Toledo 1. Ohio Mooney, William F,f 300 X. Mt. Trail Ave, Sierra Madre. Calif. Moore Enameling & Mfg. Co. (Walter B. Moore), West Lafayette.. Ohio Moore <& Munger (Murray Rushmore), 33 Rector St, New York 6. X. Y. Moore. Charles H, Jr, Xaiional Lead Co, 111 Broadway, New York 6. X. Y. Moore, Charles W,* H. C. Spinks Clay Co, Box 829, Paris, Tenn. Moore. Dwight G.G* Mineral Products Div, Xaiional Bureau of Standards. Washington 25. D. C. Moore. H, Dept, of Glass Technology. University of Sheffield, Elmrield. Northumberland Rd, Sheffield 10, England Moore. Henrv, 38 Potter Ave, \V. New Brighton, Staten Is land, X. Y. Moore. John G, 505 E. Poplar St, Robinson, III. Moore, Raymond G, 88 Perry, Coming, X. Y. Moore. Richard S,f Harbison-Walker Refractories Co, Farm ers Bank Bldg, Pittsburgh 22, Pa. 37S Moore. W alter B, Moore Er.ameiing 3: Mig. Co. West La tayelte. Ohio Moore. W. to. Hui-.tpiiryes Miit. Co. 2UI 13. Fifth :, Mans. nehl. Ohm Moorthy. V. K. 1 S . 605 E. Healey. Champaign. Ill Moran. J. J, Laudt- Ave. Spring Rd, Vineland. I. Morell. N". L . 513 Union Bank Bldg, Bethlehem. ?a. Morelia. AlireJ 'S'. 545 1 Second Ave.. New York 55. X. Y. Morev. G. A',* Ccuphvstgai Lah, 2291 U|>t"it St, Wssr.inci'.u 8. b. c. Morgan. Raymond W, Furnace Economy Co. 15C X. Wells St, Chicago 0. ill. Morgan. Robert A," Pais & Seymour. Inc, Syracuse. X. Y. Morgan. Stuart F, 13 Cooke St, Fairhavcn. Mass. Morgan. Willard L, 117 Hibiscus Drive. Pittsburgh 21. Pa. Morgan, William R,*r 1343 Rroi.kwood Lane. Birmingham Mich. Mornin, Bob L,' 367 X. County Line St, Fostoria. Ohio Morren. Georges. 20 r-ae Debunnc. Mcnin, Belgium Morris. Frank, 256 Greenpoini Ave, Brooklyn 32. X. Y. Morris. Frank E. (S), 2352.Virginia Tech. Sta, Blacksburg. Va. Morris. George J, Researci. Dept, Eerru Enamel Corp, 4|;y E. 56th St, Cleveland. Ohio Morris. Irvine H. (S). Edgelev, Out, Canada Morris. John L. Jr, 14427 Alling'nam. Norwalk. Calif. Morris, Kent B. (S), 202 Evans Dr, Decatur, tia. Morris, Paul R, Pittsburgh Plate Glass Co, Creighton Pa. Morrison. Boone H, B. F. Drakenfeld & Co, Inc, Box 519, Washington, Pa. Morrison. Neil T, Sox 193. Yuungstown. Pa. Morrison. Robert F,, 809 E. River St, Elyria. Ohio Morrison. Wailace 5, 340 Cedar 5t, Rockford. III. Morrow, H. P, Aluminum Co. of America, 801 Gulf Bldg, Pittsburgh 19. Pa. Morse. George T,, Box 85. Metucheri. S'. J. Morton Pottery Co. (William Rapp). Morton. 111. Morton. Wiiliam A, 46 Blandish Blvd, Mt. Lebanon. Pitts burgh 16. Pa. Mosaic Tile Co, Zanesville. Ohio Moser. John L,T 1310 Acorn Dr, Dayton 9. Ohio Moser. Leo. 200 Riverside Dr, New York 25. X. Y. Moss. LeRov L,* 12606 Forest Ave, Cleveland 30. Ohio Motsch. r. R, r jster-F-'.-bes Glass Co, Mari ni. (rd. Mould. W. J, Steubenville poctery Co, Steubenville. Ohio Moulthron. Robert A, Aluminum Co. of America. 1301 Ohio Bldg, Toledo. Ohio Mount Clemens Pottery Co. (Charles E. Dull). Mt. Clemens. Mich. Mouraud. Paul H, '.4. Ingleside Rd, Upper Montclair. X. J. Mowrey, Fred W, Rodgers Dr, R. R. 1, N'ew Kensington. Pa. Moyer. Kenneth L. (S), 1121 X. Central Ave, Apt. I6B. Glen dale. Calif. Moyer. Robert E, 201 X. '.Oth St, Murray, Ky. Mueller. Edward EG (J). School of Ceramics. Rutgers Uni versity. New Brunswick. X. J. Mueller. Ferd A, 331 X. Fifth St, Canon Citv. Col. Mueller. James LG Ceramic Engineering Dept, School of Mineral Industries, University of Washington. Seattle 5. Wash. Mueller. R. M,, Ferro Enamels (Australia) Pty, Ltd, Bnurke Rd, Alexandria. X.S.W, Australia Muir. David R,, Mississippi Glass Co, Main & Angelica. St. Louis 7. Mo. Mulder, James \V. (St, 23 S. Second Ave, Highland Park. N. J. Mull. John W. (J). 114 X. Second St, Jeannette. Pa. Mullen. Willard F, Div. of Ceramics. Pennsylvania State College. State College. Pa. Muller. Frederick W, New Holland Pike at Beilers Lane. Leola, Pa. Muller. MaxG Basic Refractories. Inc, S45 Hanna Bldg, Cleveland 15, Ohio MuJlite Refractories Co. ID. C. Alford), Shelton. Conn. Mulroy, James PC 965 Lafayette Ave, Buffalo 9. X. Y. Mulryan, Henry. Sierra Talc 3t Clay Co, 5509 Randolph St, Los Angeles 22. Calif. Mulvane. O. E, 4138 X. 21st St, Milwaukee 9, Wis. Mundy, O. S.G 426 Park Ave, Wheaton. III. Murgatroyd. John 3, Rockware Glass Syndicate. Ltd, Rock- ware Ave, Greenford. Middlesex, England Murphy, Remington M, 420 Hixon Ave, Syracuse 6, X. \- Murray, Maurice A.G 1103 Westwood Ave, Chattanooga 5. Tenn. Murray. Robert S, 68 McKennan Ave, Washington. Pa. Musselman. H. G, 2246 Annapolis Rd, Baltimore 20. Md. Muttitt. F. C, 126 Woodward Ave, Sault Ste. Marie. Ont, Canada Ceramic Bulletin ycrs. C. H. 2.>\ 127. Sait l.ukv L:tv. Utah yers. Charles V .' Sio N. McKean St.. Kittanning, Pa yers. E. F.. Iritii'.oit Fire Brick Ln., Box 472.3, Jacksonville I. Fia^ Vers, .-recir ck C. 'Si. Box 11)3. Hamburg, X. Y. .'yersoii. Marini. 90 Hamilton St.. Cambridge. Mass (ygdal. Rci: L. tSi. 5102 Martin Art., Austin. Texas N idler. Marion, R.. 1371 Tris St.. A|>t. in Los Alamos. N. M. agel. E. W., Wrought Iron Range Co., fool Natural Bridge Ave.. S: Leu is 20. Mo. 'aish. Waiter M. (J), Box 59. Aldershot. Ont., Canada akamura. Ycshikazu, Ashahi Class Co.. No. I. 4-choine. Ginza. Chuo-ku. Tokyo. Japan lance. Tayior E. ( Si, 595 McAfee St.. N.W.. Atlanta, Ga. (apier. John B., 1297 Burton Ave.. Macon. Ga. 'uh, Harold S..' Ceramics Dept.. University of Cincinnati. Cincinnati 3!. Ohio lain. Herbert. .Southern California Gas. Co.. Box 3249. Ter minal Annex.1 Los Angeles 54. Calif. fash. Simeon. Jr., Dept. Arts & Crafts. New Mexico High lands University. Las Vegas. N. M. rational Ceramic Co. (J. A. Schermerhorn). 500 Southard St.. Trenton |2. N. J. rational Engineering Co. ( E. A, Peterson), 549 ML Wash ington Blvd.. Chicago 6. III. rational Fireproofing Corp. I R. A. Shipley). 327 Fiith Ave.. Pittsburgh 22, Pa. rational Industrial Sand Assn. (V. P. Ahearn), 1325 E. St. ;VVV.. Washington 4. D. C. rational Lead Co. (Alex Stewart). Ill Broadwav, New York 6. N. Y. rational Lime 4c Stone Co. (L. G. Love). First National Bldg., Findlay, Ohio rational Mortar 4c Supply Co. (E. F. Kearins), 1807 First National Bank Bldg.. Pittsburgh 22. Pa. rational Refractories Co.. Inc. (R. A. Hitchins). I7th Floor, Lewis Tower Bldg., 225 S. 15th St.. Philadelphia 2. Pa. rational Research Corp. (Philip Godley), 70 Memorial Dr.. Cambridge -2. Mass. (adonal Sanitary Co. (Erwin Sonn). Salem. Ohio .`audio. Jaciuvs, Directeur C-rahr.t:. a Paray-Lz-Morial (Saor.e et Loire) France Javtas. Louis.* Research Lab.. General Electric Co., Sche nectady 5. Ni Y. xavratiei. Haris. Denmstrasse 13. Laui/Pegnitea, Bavaria, Germany i Kawaz. Ahmad; S.. 74 Lawrence. Rd.. Lahore. Pakistan. India 4611. James .. 164 Sandford Ave.. North Plaimield. N. J. ''ederlar.dscr.c '. '-reeniging van Aa.-dewerkfafcrikatuen, "< W. P -M. van der Loo. F Alexamierstraat 7. The Hague, H >1 land Keely. Homer E.. Jr., 404 E. 11th Ave.. Tarentum. Pa. Kerf. Edward D.. Box 205. Templeton. Pa. Kelt John M.. Armour Research Foundation. 3411 S. Federal St- Chicago 16. III. Keiman. Robert. Whip-Mix Corp.. Inc.. 411 W. Avery AveLouisviile 3. Ky. Kelson McCoy Pottery Co. (Nelson McCoy Melick), Roseville. Ohio Kelson. Forrest W.. 3341 S. Taylur. Milwaukee 7. Wis. Kelson. James A.. 204 Ceramics Rldg.. University oi Illinois. LYbana. III. Kelson. Robert; E/ i J). 5 MCA. Rm. 212. Norristown. Pa. Kerensrone. Marc A. f S>. Box 19. Allred. .V. Y. Nesbit. Robert A.. Box 394 College Park. Md. Netter. William S.. 18081 Mendnta Ave.. Detroit 21. Mich. Meumeister. Anthony J.. H. C. Spinks Clay Co.. Box 829. Paris. Tenn. New. Rvland H.. National Sewer Pipe Co.. Ltd.. Swansea. Toronto 3. Ont.. Canada Newark. Frank F., Aluminum Co. ni America, 1450 Terminal Tower. Cleveland 13, Ohio Newark. Martin (J). Acme Brick Co- Neil P. Anderson BldgFort Worth. Texas Newbold General Refractories, Ltd- Gavey St., Mayfield. N.S.W.. Australia New Castle Refractories Ca. (R.-W. Rowland), New Castle, Pa. Newcomb. Rextord, Jr./ 1008 Wisconsin St- Lake Geneva, Wis. Ifew Jersey Porcelain Co. (J. M. Gilfillan). Box 908. Trenton S. N. J. Newkirk. Terry F.. Portland Cement Assn. Fellowship, Na tional Bureau of Standards. Washington 25, D. C. Newman. Herbert M,, 1736 Belmont Ave., Apt. 110, Seattle 22. Wash. ,Vol. 29, No. 10 (1950) Newman. Ruber: Y. , 3222 Phillip Si.. Schenectady !'. N ) Newsom. .\. S . P-miincy A Ci. I.nl . Bristol Pottery, Fi-h- puiiils. Brist/. England Newton, R. I... Ow ens * I `linois 1 i!a>a C>*.. Bridgeton, N. J Nicholson. Cl:rf ,rc M , Er.gr. E\;u Sia.. Ohio State L'niver- sity, Coiuiti.vji It). Ohio Niculin. Jean Etahl. Jaby rrcres. o Kite de Marignan, Paris 8. France Nieman. A. H.. Ohio Hydrate A Supply Co- Wuodville. Ohio Niemczurs. Star.iey W. iS , 401 F.. Seventh St.. Rolla. Mu. Niklrwski. B. K.. ,Ma:r. Enamel Mtg. Co.. L:d.. Gothic Work.-. Angel Rd- Edmonton. London N. 13. England IKiles Fire 3r:cx Co. (J. R. T. Clingani. Is5 E. Park Ave. Niles. Ohio Nisula. Chester A... 4412 Comiy St.. Philadelphia 24. Pa. Nixen. David .Si. 1615 Stinson Ave.. Evansville, Ind. Niyogi. D. P.. Sur Enamel X Stamping Works, Ltd.. 24 Middle Road. Entally, Calcutta, India N'obes, Fredrick L- Carborundum Co.. Ltd., Manchester, England Noble, O. C,, Tygart Valley Glass Co., Washington, Pa. Nodurft. Edgar G.. 9353 Parrot Ave- Downey, Calif. Noe. Georges J. F. 10 Rue Maurice des Ombiaux, Bruxelles III, Belgium Noe. James T. (S), Apt. 20-3. Veiville. North Carolina State College. Raleigh. N. C. Norante. Nicholas J. ij), 169 W. Main St.. Rahway. N. J. Nordherg. Martin E- 134 E. Fourth St- Corning. N. Y. Nordgren. Harry. Aktiebolaget Gustavsbergs Fabriker, Gustavsoerg, Stockholm. Sweden Nordmeyer. Rudy L- Mission. Texas Nordyke. J. S., Eaglc-Picher Co.. 1501 Oliver Bldg., Pitts burgh 22. Pa. Norlyng, Kristian H- Porcelainfabriken N'orden A/S. Valbv Langgide 95. Copenhagen. Denmark Norman. Tom C.. R. R. 2. Roseville. Ohio Normandeau, Pierre. 3660 Hutchison St- Montreal 18. Quc.. 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 F.. Marginal Wav. Seattle 4. Wash. Northwestern Terra Cotta Co. (Burnette Purcell). I7*n Wrigntwcod Ave.. Chicago 14, 111. Norton Ca. (O. J. Whittemore, Jr.). Worcester 6. Mass. Norton. Charles L. Jr.,* 3abcock A Wilcox Co.. 85 Liberty St- New York 6. N. Y. Norton. Fredrick H,," Dept, of Metallurgy. Div. of Ceramics. Massachusetts Institute of Technology. Cambridge 3. Mass. Norton, James M. ;S), Box 113. Aimed. N. 5. Norwood. George M- Box 273. Lillington, N. C. Norwood. J. Neison .Life). Alfred University, Alfred. N. Y. Norwood. Joseph W. (St. Box 561. Columbus, Ga. Novak. John P. (S). S28 5. Scoville Ave- Oak Park. III. Novinski, Frank S,, 916 Everett St.. Camden. N. J. Nowak. Caro1 C. (S), Box 4018. Georgia Institute of Tech nology. Atlanta. Ga. Nowell. Dorron L- Jr.. 522 Green St,, Augusta. Ga. Nyquist. Roy A.. 3630 Beechway Blvd- Toledo 9, Ohio O Oakley. W. W..* Box 55. Cuming. N. Y. O'Bannon. Loran S.. 1390 W. First Ave., Columbus 12, Ohio Oberst. Clair R,, Industrial Ceramic Products. Inc- 965 W. Fifth Ave- Columbus 3. Ohio O'Connor, James H- 130 Murdock Rd.. Baltimore 12. Md. Odelberg, A. S. W. (Honorary), Allen 18, Djursholm, Sweden Odom. Paul R. fS). 4194 Villa Ave- Macon. Ga. Oesch. Robert 3- United Brick A Tile Co., Lee's Summit. Mo. Oesterle. Henry. Roesch Enamel A Mf?. Co., W. Main A N. 24th Sts- Belleville. III. Oesterle, Robert A- 2427 \V. Main. Belleville. III. OffilI. P. M- Amsler Morton Corp- Chamber of Commerce Bldg- Pittsburgh 19. Pa. Offut. J. S- United States Gypsum Co- 300 W. Adams St,, Chicago 6. III. Ogden, D. P- Streator Brick Co,, Streator. III. Ogden, Ellsworth P,,* Harrop Ceramic Service. 35 E. Gay St- Columbus. Ohio Ogden. John T-* Glass Industry. 55 W. 42nd St- New York 18, N. Y. Ohio Brass Co. (J. J. Taylor). Barberton. Ohio Ohio Clay Co. (Norman E. Denison). Box 1776, Cleveland 5. Ohio Ohio Hydrate 4e Supply Co. f.A. H. Nieman), Woodville, Ohio .179 Ohliger. Lewis ?.. East Canal K J .. Cr;..k:> .r:._ N i. ,, Ohrstcil:. L. E.. American Ceramic Soctety. -'.a V K.gn at.. Columbus 2. Ohm ,,, n r. , Old Hickotv Clay Co. (L. F PowuUL -mx - Pailuca.i. Ky. O'Leary, A. Iu8 Caliiil Lanc._0-'<<<. K.J. Tern:. Olenchuk. Darnel L. (Si. Box CC. AJired. V V Olive, h rank C.. 509 Chamber ol Commerce Bldg.- Ir.cian- apolis a. Lul. _ ..,, . . ... Oliver. D A., William Jcs-op & >m>. L.d.. -r.gntside vorks. Sheffield., England Oli Inc.. Evansville I nd. 01 i v ( John C.,` Porcelain Enamel institute. 1010 \'ermoiit Ave.. N.W. Washington 5. D. C. Oliver, French Saxon China Co., -coring. Ohm Olney, Wilson. 516 Albany St.. Boston. Mass. Olsen. Eric, 390 Elgin Ave.. Dundee. III. Olsen. John M- 58 Rector St.. Metuchen. N. J. Olsen. Rang1*aid S.. 1137 Grant it- Ev'ansttin. 1III. Olson. E. .. A. H. Heisev 4 Co.. Newark. Ohio Olson. Hjalmar. Aktiebolaget <juatavsbergs Fabriker. Gu>- tavsberg, Sweden Olympia. Rred (SI, Box FF. Alfred. N. ) . Olman, Rov E.. Corning Glass Works Parkersburg. W. V a. Onondaga Pottery Co. I.R. H. Pass). l3:o-a8 V*. rayette St.. Syracuse 4, N. Y. ., Oppcr. Fred H., Savannah Kaolin Co., JN American Bldg., Box 184., Savannah. Ga. Oravec. Joseph A.. 3731 N\ NewUndjAve., Chicago 3A III. Orerraction, Inc. (John F. Hunt). /*--' i ^omas bu Pittsburgh Orrnsbv, Walter C. (S). 214 W. College Ave., State College. Pa. ` i Omella, LeRoy F. (J). 3206 Upton Ave- Toledo o. Ohio Orr, Stanlev C., Pfaudler Co.. Elyria. Ohio Ortepio, Salvatore J. (J) 22 Talmadge Ave.. Bound Brook, N. J. Orth. Howard S.. Industrial Ceramic Products. Inc.. 965 W. Fifth Ave., Columbus 12, Ohio Ortman, Fred B.,*t Gladding, McBcan & Co., 7901 Los Feliz Blvd.. Los Angeles 39. Calif. Ortman. Robert C., 4419 Union St.. La Canada, Calif. Orton, Edward. Jr., Ceramic Foundation (J. L. Carruthers), 1445 Summit Box \-o Columbus I. Ohio Orzano. Michaefj.'T (J), Merrick Rd.. Rockville Centre. Long Island, .V. Y. Osawa. H: K.. 3512 E. Filth St.. Los Angeles. Calif. Osborn. Elburt F.. School of Mineral Industries. Pennsyl vania State College. State College. Pa. Osterholtz. Carl (S3. 406 E. John St.. Champaign. 111. Ostrander! Eugene C., Kopp Class. Inc.. Box 82;5. Swissvale, Pittsburgh IS. ?a. Ott. Ross v. !$/. 711 E. Tenth St.. Rolla. Mo. Ottawa Silica Co. (George A. Thornton). Box 437, Ottawa. III. Otto. George H.. 53 W. Jackson 3lvd.. Chicago 4, ,!1. Ottoson. Axel C..' 3982 Lincoln. Shadvside. Ohio Ourcauit. Karrv E.f Sc. Joseph Lead Co., 250 Park Ave.. New York 17. V. Y. Overbeck.iMarv F.. 520 E. Church St.. Cambridge City, Ind. Owen. Betty T.. American Ceramic Society, 2525 N. High St.. Columbus 2. Ohio Owen. Fredrick E,, Electrical Refractories Cu.t East Pales tine. Ohio Owen. J. D.. R. Fowler, Ltd., Fitzory St.. Marrickville, Syd ney. N. S. W.. Australia Owens-Coraing Fiberglaa Corp. I August C. Sieiert), Newark, Ohio Owens-Illinois Class Co. (W. A. Mahaffv). 601 36th Ave.. Oakland I. Calif. Owens-Illinois Glass Co. (E. W. Summers), General Eng. Dept.. Alton. III. Owens. James S., Ohio State University Research Foundation. 310 Administration Bldg.. Columbus 10. Ohio Pabst. John G.. Saxonburg Potteries. Saxnnhurg, Pa. Pabst. John G., Jr. (J), Steubenville Pottery Co.. Steubenville. Ohio Pabst. Robert E.. 6155 Pershing Ave.. St. Louts 12. Mo. Pacific Clay Products (John D. Fredericks). Box 145, Sta. A., Los Angeles 31, Calif. Pacific Coast Borax Co. <M. H. Pickard). 100 Park Ave.. New York 17. N. Y. __ Packman. Willard D.J 1528 Lisbon St.. East Liverpool. Ohio Paden City Pottery Co. (Merrill C. Sondles), Paden City, W. Va. Padfield. Ralph C. (J), 1210 N. Lincoln. Box 151, Robinson. 111. Pafford, Ray W.. Acme Brick Co.. Fort Worth 2, Texas 3S0 Page-Madden Co.. Inc. (Jesse E. Madden). 7o-u<) Secumi m . Box IK1. Miuvoia, N. Y. Palmer. Delos M,, 4401 Jackman Kd.. Toledo 12. Ohio Palmer. Gus. Jr . <55 Longwund Dr. N.W . Atlanta. Ga Palmer. J,,sepr. D., 2452 Ontario Ave . Niagara Fail,. N. V Palmer, ajiuj \\. <7o Broadmoor Ave.. Pittsburg:'. 54. Pa. Palmer. Wii'.ard E..' 93; Highland Ave . Sale-in. Ohio Palmeri, \ictjr R.. Cas:!la Correo 58. Sue. Yclcz. Sir,neb! 7. Buenos A.ires. Argentina Paimisar.o. Donald J. tii. Box 715. Alfred. N. Y. Palmiter, Richard ?. (Sj. 48l)o 29Sth St.. Toledo 11. OhL. Palmour. Hayne, III, ij).' Box 402. Norris, Tenn. Palter, Lewis, 245 E. Broadway, New York. N. Y. Paltzer. Clifford (Jl. 619 S. Second Ave. W\, Newton. la. Pangborn. William L. (J). 12 Cottage St., Spencerport. N. Y. Paper Makers Importing Co., Inc. (Charles Brian). 44 S. Second St.. Easton. Pa. Parcel, Martin W.,T 299 W. North Ave., East Palestine. Ohio Parikh, Nijranjan M.. (S), Div oi Ceramics, Dept, of Metal lurgy. Massachusetts Institute of Technology, Cambridge 39. Mass. Parker. (Hidden M.. Jr.. Glidden Pottery, Inc.. Alfred. N. Y. Parker. Harry' (S), 14`/j Washington St., Hornell, N. Y. Parker. Janies W., Jr. (S), 45 Newman Circle, Clemson. 5. C. Parker. Jay, Research 4 Development Dept., Permanente Cement Co., Permanente, Calif. Parker, Raymond W. (S), 4519 W. Foster Ave.. Chicago 30. 111. Parmelee, Clifford H.. 214 Warham St.. Syracuse 8. N. Y. Pirnham. H., General Refractories, Ltd., Worksop, England Parsons, Douglas E. Building Technology Div., National Bureau of Standards. Washington 25. D. C. Parsons. James A. (S), 22 E. Main St., Angelica, N. Y. Parsons, Joseph R.. 4326 Highgrove Rd.. Whi'.hail Boro., Pittsburgh 27, Pa. Pask. Joseph A..' Div. of Mineral Technology, University of California. Berkeley 4. Calif. Paspy. Stanley F- Jr., University of Illinois, 204 Ceramics Bldg.. Urbana, III. Pass <Se Sevmour, lac. fR. H. Pass). Solvav Station. Syracuse 9. N. Y.' Pass. James 5.. R. R. 2. Cazenuvia. N. Y. Pass. R. H.. Onondaga Pottery Co.. Syracuse 4. N. Y. Patriarca, Armando 5. E.. Picdras 383, Buenos Aires. Argen tina Patrick. Robert F.. Pemco Corp.. 2554 Greenmount Ave.. Baltimore 13. Md. Patterson. George V'.. Ohio Power Co., 301-315 Cleveland Ave. S. W.. Canton 2. Ohio Patterson. Harvey .. T. L. Smith Co.. 2335 N. 32nd St.. Mil waukee 10. Wis. Patton. William R.. Robinson Clay Products Co.. Box S5. Pottstown. pa. Paulsen. Fred H.. 23 Greendale Ave., Worcester 6. Mass. Pausewang. Margaret J. (S), Wilton Rd., Huntington. N. Y. Pavlish. Arnold E.. Kelley Island Lime 4 Transport CoLeader Bldg- Cleveland, Ohio Pawlowski. Edward J. (J). 11 Morris St., Amsterdam. N. V. Payden. Lorenzo W.. Research Lab., W. S. Dickey Clay Mfg. Co- Box 6. Pittsburg, Kan. Pearce. Charles S..* American Ceramic Society, 2525 N. High St.. Columbus 2. Ohio Pearce. Philip D. iS), 4)517 Montacute St.. Raleigh, N. C. Pearch. Willianr M- Akron Porcelain Co.. Akron 14. Ohio Pearson, E. J. 4 J- Ltd. (Charles A. G. Thomas), Firebrick Works. Stourbridge. England Pearson. Edward P., Basic Refractories, Inc.. Maple Grove. Ohio Pechman. Alexander fj). 914 42nd St.. Brooklyn 19. N. Y. Peck. J. Clair. R. R. 1. Milton. Pa. Peck. Russeil L., 311 Conestoga Rd- Wayne. Pa. Pedrick. W. W., Armstrong Cork Co.. Millville. N. J. Pedu, Richard K. (S), 129 Chestnut St.. Garden City, N. Y. Peel. G. N.. Associated Lead Manufacturers. Ltd- Willington Quay. Wallsent. Northumberland. England Peiler, Karl E..* Hartford-Empire Co., Box 1620. Hartford 2. Conn. Pelham. Alphonzo. 15 North Dr., Kensington. Great Neck, L I- N. Y. Pelley. Kenneth M,, East Sparta. Ohio Pelz, Robert \V,, 2706 Grove'wood. Parma 9. Ohio Pemco Corp. (Richard H. Turk), 5601 Eastern Ave- Baltimore. 24. Md. Pence, F. K..*t Ceramic Engineering, University of Texas. Austin 12. Texas Pendroy, Laurence A., Weil of California, Inc., 3160 San Fernando Rd- Los Angeles 65. Calif. Pennsylvania Pulverizing Co. (William J. Woods), Box 587, Lewistown, Pa. Ceramic Bulletin Pennsylvania Salt Mi;, Co. (l\. 3. Rweilcri, 104) W i<ic:icr BIJ'.'-. Philadelphia 7, ?a. Petccaiiii. J. Z. dc Oliveira. Manuiaiura Brazilci.-a De Luucas 3. A, r\ua I luretieio De Abreu 40 F. 5ao Pauir, Brazil Petrel ::>[. Joseph L. i 5). Box J.S95. Georgia Institute oi Technology. Atlanta. G.i. Pereira. Armando Je Arraiia. Caixa Postal 195'). San Paulo. 3 r a j.ti Pereriy. Andrew, Pereny Equipment Co., 395 Chambers Rd, Columbus 3. Ohio Perkins Harrell L., Central oi Georgia R. R . 501 Rhodes- Haverty Bldg, Atlanta a. Ga. Perkins. Waller W. 6CU De AVitl St., Linden. N. J. Perry. Robert F, Victor Insulators, Inc., Victor, N. Y. Persick. Wllliatn T. (Si, 2440 S. 37th St.. Lincoln. Neb. Pertuch. Walter A. R.. Franklin Institute. Parkway at 20th St., Philadelphia J, Pa. Peskir.. William L., Box 465. Newell. W. Va. Peters. Forrest I. (5), 223 Railroad Ave, Carnegie, Pa. Petersen. Fred A,** Dept oi Ceramics. University oi Illinois, L'rbana. III. Peterson. Douglas I., Industrial Research Lab.. 1460 Mc Intyre St.. Retina Sask. Canada Peterson. E. A.. National Engineering Co.. 549 W. Washing ton Blvd, Chicago 6. III. Peterson. Jack D., 3029 123rd St., Toledo 11. Ohio Peterson, Jack I, IS), 1402 W. Alameda, Burbank. Calif. Peterson, John A.. Jr. (5). 71 Payson Lane. University . Heights, Newt Brunswick, N. J. Peterson. Leroy E. (S), 423. Weltv Ave.. Rockford, 111. Peterson, Ralph G. fS), Box 722. Alfred. N. Y. Peterson. W. H., Valentine Fire Brick Co.. Wcodbridge. N. J. Petit. Daniel, Societe de Technique Industrielle, 20. Rue La Boetie. Paris 3'. France. Petrie. Earl C.,*T North American Reiractories Co., 1012 National City Bank. E. Sixth Bldg.. Cleveland 14, Ohio Petrie. Lloyd R,, 404 W. Snyder St.. Abingdon. III. Petrusiw, Walter. 519 Pine St.. Steelton, Pa. Pett. Tyler G., 251 Antlers Dr.. Rochester 13. N. Y. Petterson. Richard B.. 131 W. Eighth. Claremont. Calif. George F. Pettinos, Inc. (George F. Pettinos. Sr.), 1206 Locust St.. Philadelphia 7. Pa. Pettinos. George F. Sr.. George F. Pettinos, Inc.. 1206 Locust St.. Philadelphia 7. Pa. petty. Howard Z.. 2967 5. ilth St.. Lincoln 2. Neb. Pfaudler Co.. (Sidney W. McCann), 1000 West Ave.. Roch ester 11. N. Y. Pfeirr. C. H., Box 527. Metuchen. N. J. Pieirrenberger. Lucas E. (5). 463 Blurf St.. Alton. 111. Pfeiner. Wilbur H,** Engineering Lab.. Plant 2, Frigidaire Div., General Motors Corp, Davton 1. Ohio Pfl eger. George E, Harshaw Chemical Co.. 609 S. Grand. Los Angeies -4. Caiit. Phadke. V. S.. Central Potteries. Ltd.. Itwari. Nagpur. India Pheips. Girard V.'., 410 Z. Magnolia Dr.. Morrisviile. Pa. Pheins. Stuart M..* Mellon Institute. Pittsburgh 13, Pa. Phillins. Adrian W, Jr., 94 Lincoln Ave.. Highland Park, n. ;. Phi j 11 ds. Donald G.. 4600 Hartel St.. Philadelphia 36. Pa. Phillips. Edwin L,r United Feldspar Sc Minerals Corp.. 10 E. -tflth St.. New York 16. N. Y. Phillins. Gordon D, Olean Tile Co.. Olean. N. Y. Phillins. Jack E., Box 44, Lakewood Ave.. East Qungue. I.. I.. . . N. Y. Phillins. James G.,- Bureau of Mines. Dept, of Mines & Resources. Lydia St.. Ottawa. Canada Phillins. William E.. 1200 Bay St.. Toronto 3, Ont.. Canada Phiilipson. E. G., 46 Aberdeen St., Medicine Hat. Alta. Canada Phoenix. Richard C. (S), 18 College Ave., New Brunswick. N. J. ickard. M. H., Pacific Coast Borax Co.. 100 Park Ave.. New York 17. N. Y. ickett. Albert R.. Aluminum Co. of America. Inc., 801 Gulf Bldg., Pittsburgh 19, Pa. leper Arthur 0.. 105 Trevor Court Rd.. Rochester 10, N. Y. rce Glass Co. (J. G. Bozzo). Port Alleganv. Pa. !erce. J. Allen. 320 E St., Sparrows Pt, Baltimore 19, Md. 'erre. Robert H. H.. Jr.. Polychemicals Dept- Experimental Station. E. I. du Pont de Nemours 4 Co, Inc.. Wilmington, Del. [erpont. Harlan T.. Jr, New Bond St, Worcester. Mass, 'erson. James F..' 210 Rodgers Forge Rd.. Apt. B, Baltimore 12. Md. gott. P. G,(S), Box 202. Rolla, Mo. Ice. Robert D, Brook Lane, Greenwich. Conn. Ikington. Lawrence H. A, Messrs. Pilkington Brothers, Ltd, Glass Works. St. Helens England mstein. Uri (S). 1106 S. First, Champaign, III. cus. Alexis G, 1061 Glenwood Blvd, Schenectady 8, N. Y. L. 29, No. 10 (1950) Pinney, J. M, Harkcr Pottery Co, East Liverpool, Ohio Pinnow, Harley R, 911 Vine it. Apt. 2. East Liverpool. Ohio Pinotti, h re-J D, 2224 Mtdillesex Dr, Toledo. Ohio Pittman. Jack. 3ox 257, R. R. 2. .Mercer Island, Wash. Pittman. William C, 4954 Cleves Pike. Cincinnati 5. Ohio Pitts. Joserr. W, Enameled Metals Section, National Bureau oi Standards. Washington 25. D. C. Pittsburgh Corning Corp. (Walter D. Ford). Technical Depi. Port Allegany. Pa. Pittsburgh Plate Glass Co. i.C. E. Fulton i. Creighton, Pa. Pittsburgh Plate Glass Co, Columbia Chemical Div. ( R. W. Miller . Barberton, Ohm Pixley, Francis V. -Si. 3ox 743. A.lfred. N. Y. Place, Thomas 2.1, Jr. (S), Sevakern Country Club, R. R. 1. Salem. Ohio Place. Tom 1.1,' .American Limoges China. Inc, Sebring, Ohio Plagge, Vernon L, 4g9 Park Ave, East Orange. N. J. Planje, Christian W,,T 15C0 First Ave. S, Seattle 4, Wash. Planje. Theodore J. M,, 305 Orchard St, Rolla. Mo. Plank. Ross D, 2335 Shadow Lawn Ave, Los Angeles 35 Calif. Plankenhorr, William J, 204 Ceramics Bldg, University oi Illinois, Urbana. 111. Platt, Donald L, 4. Granville Ave, Newcastle-under-Lyme. N. Stafford, England Pleasants, Luther E, Jr, 3101 North Ave, Richmond 22, Va. Ploetz. Edwin C. H, 708 S. Lincoln Ave, Kankakee. III. Ploetz. George L,, Filtros. Jnt, East Rochester, X. Y. Plumbo, Robert iS). Box'* 464, Rutgers University, New Brunswick, N. J. Plumbo. Victor A, General Glass Equipment Co, 5 S. Vir ginia A.ve, .Atlantic City, N. J. Plummer. Harry C,* Structural Clay Products Institute, 1520 13th St. N. W, Washington 6. D. C. Plummer. J. H, Glass Fibers, Inc, Waterville. Ohio Plummer. Norman, State Geological Survey of Kansas. Law rence. Kan. Plunkett. Richard G. (S'). Box 10. Leetsdale. Pa. Plusch. H. A,*' 1014 Oak Lane, Philadelphia 26. Pa. Plusfh. John A, 2 Woodland Rd, Westfieid. Mass. Poe. Frances. 147 Lir.den Ave, Wilmette, III, Porfenberg, Scott. Aluminum Silicates Co, 11616 Chenault St, Los Angeles 24. Calif. Pole. Gurdon R,* 2392 S. Shore Blvd, White Bear Lake 10. Minn. Polhemus. D. W . Carborundum Co, 1227 N. Broad St, Phila delphia 22. Pa. Polk. Arthur E, 3901 S. Morgan St, Chicago 9, III. Pollingue. Daniei J, Jr, 508 N. First St, Princeton. III. Polynesian Arts (Hugh H. Gantt). Mayfield, Ky. Pnmeroy. William T,, Sterling China Co, East Liverpool. Ohio r'ommer. Henry O, R. E. 1. Raleigh, Tern. I'ommer. Kar! E, John A. Denies Sons Co, 373 Adams. Memphis. Tenrt. Pond. Marvin H, American Crucible Co, North Haven. Conn. Poole, James P, Brockway Glass Co, Inc, Plant 2. Brock- wav. Pa. Porcelain Metals Corp. of Louisville (P. B. McBride), 1400 S. 13th St, Louisville 10. N. Y. Pnrst. Edward G,, 51 E. Randall St, Baltimore 50, Md. Porter, Frank R,," 318 E. Clark St, Crown Point. Ind. Porter, Garnett H,, 54 Pomeroy Ave, Pittsfield, Mass. Porter. J. L,, Permanente Metals Corp, Box 1031, Baton Rouge. La. Porter. Ruriyard. Carnegie-Illinois Steel Corp, 208 S. LaSalle St, Rm. '.655, Chicago 90. 111. Porter. Sidney C, Globe Brick Co, East Liverpool, Ohio Porter, Wallace S, 1936 Sycamore St, Haddon Heights, N. J. Porter. S. C, Globe Brick Co, East Liverpool. Ohio Posey Iron Works. Inc. ( Frank A. Fix), Lancaster. Pa. Posiusznv, Ravmond F, 5423 Woodbine Ave, Philadelphia, Pa. Post. Benjamin F.,* 373. Wavland. 2.tass. Post. Zarr A, 3402 Tulane Dr, Apt 21, W. Hyattsville. Md. Poste. Emerson P,*' 309 2.1cCallie Ave, Chattanooga 3. Tenn. Postlewaite. Donald E, Universal-Rundle Corp, Box 300, Redlands. Calif. Potchtar. Harold (J). 438 Ocean Parkway, Brooklyn, N. Y. Potter, Fred J, R. Thomas Sc Sons Co, Lisbon, Ohio Potter, Richard S, 331 Buckingham, San Antonio. Texas Potters Supply Co. (William W. Irwin). East Liverpool, Ohio Potts. Amos ?,* 359 E. Main St, Logan. Ohio Pouliesos. S, 92 Mauromihali. Athens, Greece Poulton, Robert F,, 276J N. Congress Rd, Camden 4, N. J. Powell. John A, Star Porcelain Co, Muirhead Ave, Trenton 9. N. J. Powell. L F, Old Hickory Clay Co, Paducah, Ky. Powell. O. E, Indiana Drain Tile Co, Inc, Brooklyn, Ind. 381 P.j'.vcII. Richard E.. Dei*i. Chemistry. L'.-iivcrsity .<t Cali- lornia. Berkeley *. Calif. Powell. ivichard H. lS>. Box Jo. Alfred. N. .. Power. Henry R.. 10J0 James Aye.. .Via^ara Falls. N. . Powers, Alfred E.. IT" Bridge it.. Cornsm:. N\ V Powers. Beverly K. i.Sf, -.'J \\ es f.vo* B.vd.. N. A.. R>a* Poweri. Lami \V. (S). J70j Rio Grande.^A*jst:n 5. Texas Paaeiskv. Leo. SO Jackson Ave.. Jersey City. X. J. Prabftu.*Keshavrau P. (S). Box 5M. State College. Pa. Precision Grinding Wheel Co., Inc. (Roland J. C.arkj, S301 Torresdale Ave.. Pliuadclnliia Jo. Pa. ^ P'eisrnan, Louis, Barium Reduction Corj>.. South Ctiarleston. '\V. Va. Prentice. William H., Jr./ 2005 Central Ave.. Augusta. Ga. Prentice. William J.. Jr.. Glass Mfg. Div., General Electric Co.. Nela Park. Cleveland. Ohio Prescott. Frank R-, 1319 Kimball Ave.. Arnold. Pa. Presswood. Colin. South Bank. 141 Water-all Lane;. Black- heath. Stafford. England Preston. Frank W.. Box 149. Butler. Pa. Prevv. Elmer L.. N. Y. State College of Ceramics. Alfred. N. Y. Prewitt. J. K.. Elgin Standard Brick Mfg. Co.. Elgin. Texas Prev. Arthur H.. Carborundum Co.. Niagara Falls. N. V Price. Glen M., General Refractories Co.. Box 1673, Baltimore 3. Md. . Price. Jarnes E.. 44 W. Guernsey Ave., Abington. Pa. Price. Warren I-- *0 E. Fourth St.. Corning. X. Y. PridCy. K. O.. Barium Reduction Curie. South Char:eston 3. W. Ya. Priestley. J.-Edward. Messrs. McSkiinming & Son. I.td., Box 923. Dunedin. New Zealand Prigge. Robert E. fS'i, 814 Mnrewood Ave.. Pittsburgh 13, Pa. Primm. Herbert E.. 1835 Eaton Ave.. San Carlos. Calif. Prince, Alan T.. Ceramic Section. Bureau of Mines. Ottawa. Or.t.. Canada Prior, Gordon M.. 320 Haven Ave.. Scotch Plains. N. J. Prior. Harold D..' R. R. 1. Valley Rd.. Millington. N. J. Proctor. W. ].. Jr. (J). Southern Clay lnc,, Gordon. Ga. Proe. Joseph A.. Jr.J 3214 Niagara Ave.. Niagara Falls. N. Y. Prokonec. Robert (5 ). 258 W. Ninth St.. Elmira Heights. N. Y. Prinsit Div-.sion. Pear li Co. A. T Chester!. 851 S. Market St.. Waukegan. III. Prows. Russeil R.. Place Rd.. F.rlanger. Kv. Pryor, Edward K.. 632 N. Court Ave.. Whither. Calif. Puerto Rico Clay Products Co.. Box 36/2. San Juan. Puerto Rico Pulaski. Marie. 1222 E. "9th St.. Cleveland 3. Ohio Puisiter. V.. Western Cartridge Co.. East Alton. III. Puntr.ev. Lawrence F... SC-21 Titus P. I.. Har.i-ty Hills. St. Louis County, Mo. Punuiidv. A,le-tander. 3-1--18 91st St.. Apt. A 41, Jackson Heights. L. I.. N. Y. Purcell. Burnette. Northwestern Terra Cotta Corp., 1750 Wrigrtwood Ave.. Chicago 14. III. Purdy. James A., Fischer & Porter Co.. County Line Rd.. Hatboro. Pa. Purdy. Mrs. Ross C.. 59 E. Longview Ave.. Columbus 2. Ohio Purneil. Hugh ].. 761 Loretta St.. Pittsburgh 17. Pa. P7T0 Refractories Co. lO. E. Miller!. Oak Hill. Ohio 0 Quarin. Alfred L. <S), Box 3871. Georgia Institute of Tech nology. Atlanta. Ga. Quinn. William 3040 Marguerite St., Los Angeles 65. Calif. Quirk. John F..T 2235 Barrvmore Ave.. Columbus. Ohio Quirk. John M. (SI. Box 1023, Alfred. N. Y. Quirk, Virgil P. (J). Calhoun. Ky. R Rabe. N. A_ 10 W. Palmer Ave.. Collingswood. N. J. Raeuber, Arthur E., 1908 E. Kenmore Place, Shorewood II. Wis. Ragatz. Eugene C.. Allen-Bradley Co.. 136 \V. Greenfield Ave.. Milwaukee 4. Wis. Raggon. Frank C.. Jr., 4202 Bowen Rd., Toledo 12, Ohio Raine. Frank F.,t 111 E. Vine St.. Mexico. Mo. Rait, J. R., Research Dept., Hadhelds, Ltd., E. Hecla Works, Sheffield 9. England Ralston. O. C..* 4333 Clagett Rd.. Hyattsville. Md. Ramin. Eric, H. L. Brisbane & Wunderlich, Ltd., Lord St, Eaut Perth, West Australia Ramsden. C. E.. C. E. Ramsden & Co.. Ltd.. Foley Colour & Chemical Works, Fenton, St- ke-on-Trent, England 382 Ramtite Co. 1 Louis J. Jao.i>>'. W. ISth S'... Chicag.. -. i;; Randal:. James a... Wcll.-vilic. \. V. Randall. Rutli H.. Ill) Lynbruuk Circle. Do\\ it:. X. V. Randolph. Hal F.. Mexico Refractories Co.. Mexico. M... Rankin. James J . St. Joseph Lead Co.. Eox 97. Mcuaea, P . Rankine. A.dan: S . Jr.. Martinsville. X. J. Rao. D. S. J. 1; . Ceramic Department. Benares Hiu i.i versity, Benarso India Raim, Carl H..' Clcbe-LV.ii.ii. Inc.. 9UU E. Keeic .Ave.. MX. svauk-.-e i. Wis. Rapp, Howard C.` (S). 404 N. Main St.. Morton, Hi. Rapp. William. .Morton Pottery Co.. Merton. 111. Rasara-.nam.. P . Gov t. Cement Works. Kankcsanturai. Cev|.,n India Rase. Daniel E. 1 Si. Box AA. Alfred. N. Y.. Rasmussen. R. K.. Mississippi Glass Co., Fullerton, Calif. Rasmussen. Wayiand G.. Mason City Brick Tile Co. Mason City, Iowa Rassner. Donald D.,T 224 Northview Ave., New Castle. Pa. RatcIitTe. temple W.. 250 Walnut St.. Beaver. Pa. Rauch. Harry W. i.S>. o05 Windcrest. State College. Pa. Rauscher. Louis C.. Jr. (Si. 2374 Geneva Ave.. Gleuside. Pa. Ray, E. Harold. 3. F., Drakenfeld Co., Inc., Box 509. Wash ington. ?a. Ray. John G.. Sylvania Electric Products, Cottage Place Mineoia. L. I.. N. Y. Ray, Susliil. 20-C. Southern Ave.. Calcutta 26. India Razey. Robert M.. 486 Ashland. Detroit 15. Mich. Rea, Robert F.. Zonolite Co.. 135 S. LaSalle St., Chicago j. 111. Reagan. Cornelius J.. Glen-Gery Shale Brick Corp., Watsoii- tovvn Plant, Watsontown, Pa. Reaves. Wilson A., Jr. (Si, 2S04 Whitis, Austin, Texas Recny, Frank G. (.$), 828 N. Milwaukee Ave., Milwaukee 2 Wis. Redlich. Paul L.. Rotospray Mfg. Co.. 562 Washington Rlvd. Chicago 6. 111. Redshaw. Herbert. Hamilton Porcelains, Ltd., 38 Elgin Box 226. Bradford. Ont.. Canada Reed. -Albert J., Jr., Carborundum Co.. Research Dept.. Nia gara Falls. N. Y. Reed. Carl .. 1326 E. Main St.. Lancaster. Ohio Reed. Charles S.. Jr., Chicago Retort Fire Brick C... 298 S. LaSalle St.. Chicago 4, 111. Reed. Htroid X..' 416 AY. Laurel St.. Willard. Ohio Recu. Norman D. tSi. Friiey Hail, Ames. Iowa Reed. Paul H.. 310 Fairmont Ave.. New Castle. Pa. Reese. L. P.. Scio-Ohio Pottery Co.. Scio. Ohio Refractory Insulation Corp. (A. S. Ar-.vine), Port Kennedy N. Y. Regenhrecht. Albert, Jr.. 504 N. Broad 5t.. Emporium, Pa. Reger. James W. < S). J06-R Walnut. Rolla. Mo. Sego-.it. Joseph F E.. X. V de Sphinx. Maastricht. Holland Reid. Harry F.. 205 Tibet Rc.. Colurr.ous 2. Ohio Reid. Harry W. :S). Patapsco Rd.. North Linthisum. Md. Reider. K.^G.. Lamp Dept.. Administration Div.. General Electric Co.. Neia Park, E. Cleveland 12. Ohio Reimer. John J.T Keystone Ceramic Corp., Bendersvi/le. Pa. Rein. Peter. 1516 S. Ridgeway Ave.. Chicago 23. III. Reinker. Arthur G., Johns-Manvillc Sales Corp.. 1550 Guild hall Bldg.. Cleveland 15. Ohio Reinker. Geratd^E., Lamp Dept.. General Electric Co.. UJj E. 152nd St.. Cleveland 10. Ohio Reis. Alfred J., Rutgers L'niversitv. New Brunswick. X. J. Reising, Joseph A., St. Joseph Lead Co. Drawer 97. Monaca, Pa. Reiss. Max S.. ^06 N. Front St.. Wheeling. W. Va. Remington. Victor H., B. F. Drakenield Co.. Inc., Box 519. Washington. ?a. ! Remmev. G. Bickiey.* Richard C. Remmey Son Co.. Hedley St. Delaware River, Philadelphia 37. Pa. 1 Remmey. John G., Richard C. Remmev Son Co., Hedley St. Delaware River, Philadelphia 37. Pa. i Remmey, Richard C., Son Co. (G. Bickiey Remmey). Hedley St. Delaware River, Philadelphia 37. Pa. Rempes. Paul E. (S), 499 Midgard Rd.. Columbus 2. Ohio Renfrew. }. Harvey, 31 Linden Park St.. Roxbury 20. Mass. Renouf. Leonard J.. Church St.. Youngstown. N. Y. Renskers, Richard HA (S), 85 Adelaide Ave., Highland Park, N. J. Republic Stamping tt Enameling Co. (W. Leas Hausley), Box 471. Canton 1. Ohio Republic Steel Corp. (B. E. Longwell), 1423 Republic Bldg.. Cleveland 1. Ohio Reser. Margie K.. 249 \V. Tenth Ave.. Columbus. Ohio Reuning. Charles R. (S), Box BB. Alfred, N. Y. Reuniiig. George VV., Jr.A Box 273. Alexandria. Pa. Reusche. Frank L. (J), 218 Orange Ave., Irvington 11. NT. J. Reuter. Raymond. National Aluminate Corp., 6216 W. 66 Place, Chicago 38. III. Ceramic Bulletin Rcvin.id-. Harry M., Kolia* C-. L>->\ JoL Sia. A,, Cjlumimi. 0:in RhcJ- V/aiar A., Ossineke. R. R. 1. Mich. Rhoscis. J.inu's L. (.5), J446 Grandview Ave., Mount Penn, Resiling. Pa Rhodes. Foster T . Onondaga Pottery Co.. Syracuse 4, X. V. Rhoiies. Fra.cr R, 7134 Maple Ave.. Madeira. Ohio Rhodes. Ralph IS., Jr., c.'o Donald Hagar, Box 323. Zanesville. ~ Ohio '.Rhodes. Ralph R,,t 1729 Poweil St., Norristown. Pa. Ricci. Edward M. (S), Alpha Phi Delta. State College, Pa. Rice. Bryan A,`r 219 Hollywood Ave.. Rochester 7. N. V. .- Rice. George A.. 1731 Van Cortland St.. Schenectady 7, S'. V. `Rice. Hal H..r 2929 Macomb St.. .V. \V,, Washington 3, D. C. ;. Rice. Murray ).. 133 N. Main St.. Alfred. S'. V. Rice. William H. (53, 953 Wyoming Ave.. Forty Fort. Pa. i Richard, Giulio A.. Via Cernuschi 1. Milano. Italy T Richards. Thomas Z. (S3, 326 S. Market St., Selinsgruve. t- Pa. ":Ri chardson,; H. K, 41 Yantecaw Ave., Bloomfield. X. Y. jf Richardson., Lloyd D., R. R. 1. Springvalley, Ohio I Richardson,Robert M.. 5530 Fifth Ave.. Pittsburgh 1, Pa. (Richmond. Joseph C,r 4415 Fairfield Dr.. Bethesda 14, Md. f Richter, C. J, Glass Engineers, Inc., 804 Clark Bldg.. Pitts burgh 22, (Pa. fRichter. Hanntut W., Box 471, Rahway, N. J. 5Rick. Clarence A- 617 California St., Watsontown. Calif. (Ricker, Richard W. (S3, Div. of Ceramics, Pennsylvania J State College, State College. Pa. TRickey. James H., Jr,' [ronton Fire Brick Co., Ironton, Ohio * Riddell. W. A, Co. (W. H. Merkel), American Clay Machin ery Div., Bucvrjs. Ohio Riddle. Frank H.."T 1420 Strathcona Dr.. Detroit 3. Mich. Riddle. Robert F., Pennsylvania Pulverizing Co.. 2309 First National Bank Bldg., Pittsburgh 22, Pa. Ridgeway, John C,, Jr., 41J`/j Oakland Blvd.. Cambridge. Ohio Riebe. Donald R.' (J), Alexander H. Kerr & Co., Inc., Box 535. Santa, Ana. Calii. Riebel. E. Di. 68 E. Norman Ave.. Davton 3. Ohio Ri nl. W. Hanovia Chemical i Mfg. Co., 1 W. Central Ave.. East Newark. X. J. Riel. Charles H., Onondaga Potterv Co.. Court St. Plant, Syracuse. X Y. Ries. H,,* i Honorary), 401 Tliurstuit Ave.. Ithaca, X. Y. Rigby. James E,, Blue Ridge Glass Corp., Kingsport. Tenn. Rigterink. Merle D, Bell Telephone Labs.. Murray Hill. X. J. Riis. 'Asgeirl 300 Fifth Ave., Xe-.v York 18. N. Y. Riker. Leon W, Jr. t S3. Box CC. Alfred. X. Y. Riley. James1 H. (J3, Box 1278. Oklahoma City, Okla. Riley. Roger; R. (S3, R. R. 3, Box jJJ. Bellingham. Wash. SH' re. Guy "... Div of Ceramics. Pennsylvania State Col' lege. State, College, Pa. Ritchie. Thomas. 98 Research Rd.. R. R. !. Ottawa, Ont, I Canaria Ritenour. G. L,, Herron Ave.. Cheswick. Pa. Ritter. losepeh S., Acamston Flat Glass Co.. Clarksburg. : W. Vi. Rita. Joseph AV, 1701 E. Broadway, Toledo. Ohio Roach. JT. C.. American Radiator & Standard Sanitary Corp, 154! S. Seventh St.. Louisville. Kv. Roach. Wilfred H. (S3, New York State College of Ceramics, Box 293. Alfred. X. Y. Robb. Richard B., 370 Galloway St.. Pacific Palisades. Calif. Robbins. David (J3. 27 Franklin St.. New- Bedford. Mass. Roberson. Cletis L.. 330 Moull St, N'ewark. Ohio Roberts, Alfred J.. II. 159 W. 32nd St., Los Angeles 7, Calif. Roberts, Hunter H. (S3. X' rthington Campus, L'niversitv. Ala. Roberts. Tames W. (S3. Box 2414. University. Ala. Roberts, John T..f 54(5 Fairfield Ave.. Elmhurst. 111. Roberts. Mervin F, 101 WT 80th 5t.. New York 24. X. Y. Robertson. Herbert A.. 153 Stanley Ave, Hamilton, Out, Canada Robertson. James A.. Box 1061. Newark. Calif. Robertson. Randal K.. 906 University Tower Bldg.. Montreal. KQue, Canada tobertson. Randal M, 6712 N. Washington Blvd, E. Falls Church. Va. tabeson Proeeis Ca. CAsgeir Riisl, 300 Filth Ave, New York 18. N. Y. obillard. Harvey J, Jr, 77 South St, Westboro. Mass, lobinson Clay Product Co. (W. F, Robinson), 65 W. State St, Akron 9, Ohio lobinson. Alfred W,f 7636 S. Colfax Ave, Chicago 49. 111. bbinson. F. George, 300 S. Santa Fe Dr, Denver, Col. dbinson. Gilbert C, Box 91. Clemson. S. C. obinson, G. ,R,,t 224 Mound St, Logan. Ohio ol. 213, No. 10 (19.50) I. Robin,.,r, i, .1:1, G, Louis (j. Kubniiui; Labi., -*>\ Tbi, C:ncinnai: 1. Ol.io Robinson. Phillip. 23 Pym.ble. Sydney. X- S. W, Australia Robins..n. Richard E, 526 W. New Castle St, Zslienople, Pa. Robinscr, Richard R, 410 Grape St, Kammunton, N. J. Robins* n. R-_t ert j 11 r.. Grandview As c . Zeliennple. Pa. Robins' r, W E, Kofci nsun C!av UCt Cc.. 6z \V\ 5 UH* St, A Ol iu Robson., n. Bi- x 55. Lewiston. NL V. Robson. amts T.. ai:lied Engineering L u , 4150 E. 5ot.n St . Clevc land 5, Oil lo Roche. L. C,* ary la nd Glass Cjrp, Baltirn.re 50. .Md. 47 Wiccmico St.. Rochester. Thomas 3V,, Jr, 210 Delevan Ave, Corning. X. 3'. Rochow, W. F, Hardison-Walker Reiractories Co, Pittsburgh 22. Pa. Rodgers, Eber, Jr, Alton Brick Co, Alton, 111. Rodgers. Joseph P, 4214 Connecticut Ave, Baltimore 29. .Mil. Rodgers. Nisbet P, Box 1306. San Angelo. Texas Rodman. Clarence J, Box 809. Alliance. Ohio Rodrigue:. Alfonso F, V'idriera Monterrey, S. A, Apartadi* 162. Monterrey. X. L, Mexico Rodrigue:. Mirto. Sauce, Dpto. de Canelones. Uruguay Roehm. Victor J,*' 2320 Ridgewood Ave, Alliance. Ohio Roeller. R. S, Pennsylvania Salt Mfg. Co, 1000 Widener Bldg, Philadelphia 7. Pa. Rod. W. Wailace. 14 Glenside Dr, West Orange, N. J. Rogatz. .-Ivin tSi, 7529 5. Cornell. Chicago. III. Rogers. Edwin J, Scintilla Magneto Div, Bendix Aviation Corn, Sidney, X. Y. Rogers. Gregory L, R. R. 3, Box 633. Ojai, Calif. Rogers. Melvin F.' <.J), 417 Watauga Ave, Corning. N. Y. Rohr, Harold R, 919 Hunter Ave, Columbus. Ohio Rolke. Herbert J,* Sociedade de Engenharia Industrial, Rua Marconi, 23. 3" andar, Sao Paulo. Brazil Rollason. E. C, Murex Welding Processes, Ltd, Hertford Rd, Waltham Cross. Herts. England Rollfs. Edward H,,* Pantooset Rd, Hanover, Mass. Roques. Rodney A. ij). 2511 Metairie Rd, New Orleans, La. Rose. F. A, Locke. Inc, Box 57. Baltimore 3, Md. Rose. Ralph.' 1511 Perry St, Columbus 1. Ohio Rosenthal. E. K,, 234 Napoleon St, Playa Del Rey, Calif. Rosenthal. Ernst. 246 Park West. Marble Arch, Loudon W. Roseville Pottery, lac. (Robert P. Windischl, Zanesville. Ohio . __ Roshnng. Robert L, Steel & Tube Div, Library. Timken Roller Bearing Co, Canton 0. Ohio Roslund. James W,, Globe Brick Co, East Liverpool. Ohio Rosa-Tacony Crucible Co. i.A. M. Johnson). Tacony. Phila delphia 35. Pa. Ross. 'Yli'.iam E, -'.I* John l.yin!: Rd, Des Moinr*. Iowa Roth. Robert J. * S i. 1113 W. University. Urbana, 111. Rotherm.el. Daphne Land. Corning Glass Works. C inline. X. Y. Rothermel. Joseph J, Cuming Glass Works. Research Lab, Corning. X. Y. Roudabush. Dougias E, 512 Kings Highway, Moorstown. X. J. Roudabush. Henry L,, General Refractories Co, Brooklyn. Baltimore, Md. Roudabush. Ned W. (J). 107 Browning Ave, Altoona. Pa. Rough. Robert R, Owens-Illinois Glass Co, General Research Laboratory, 1700 X. Westwood. Toledo 7, Ohio Roup. Roiland." Globe-Uniuit. Inc, 900 E. Keefe Ave, Mil waukee L Wis. Rous. William C, Jr.r (J). 5242 X. 23th St, Milwaukee. Wis. dcRoux. Juan R. (S3. Box 181. Sta. A, Ames. Iowa Rowe. Arnold E..r 313 Beechwood Ave, Carnegie. Pa. Rowland. Davidge H, Porcelain Insulator Co, Lima. X. Y. Rowland. Donald A, 622 S. Morton St, Okmulgee. Okla. Rowland. George R. (S3, 102 Low Gap Rd, Princeton. W. Va. Rowland. Richards A, Exploration & Production Research. Shell Oil Co, 3737 Bellaire Blvd, Houston 3. Texas Rowland. Roger W',* New Castle Refractories Co, New Castle. Pa. Rowlands. Robert R. (S), 411 E. Garneld Ave, New Castle. Royal Cbina, Inc. fB. L. Miller). Sebring. Ohio Royal. Herbert F, 1073 N. Woodward Ave, Birmingham. Mich. . ... w Royer. Rene. Faiencerie de Badunviller. Badonvtller M. et M_ France Ruark. Arthur E, Johns Hopkins University, 1315 St. Paul St, Baltimore 2. Md. Rudd. Richard D, 3335 W". 47th St, Chicago 32. III. Rudolf. Paul E, Stoneware Factory F.mbrach, Ltd, Em- brach (Zurich). Switzerland Rue. Charles V..r 553 Orphanage Rd, R. R. 3; Raleigh. N. C. 383 Sieter:. August C., Owens-Corning Kibergias Corp.. Newark. Ohio Siegwald. Clyde R..f Colette Apr. oA, Dr. Ashford Ave- Santu.-ir. Puerto Rico Siever:. Guilio E.. -645 Hoilister Terrace. Glendale 6. Cali;. SigfT. -ear., c o Usines Morandi Curcelies. Payerne, Switr.er- land ! Signnreila. 'osepii E., 1812 Kenneth Ave.. New Kensington. Pa. : Sigwart, Harry J.. 732 Beechurst Ave.. Morgantown, \\ . \ a. .4ilk. Kar;:, T':ie Coppins, Sandy Rua<l. Norton. Stourbridge. Worcester. England Silva, Carlos M. Lopez, Malabia 2120-3 Piso A.. Buenos Aires, Argentina Silverman, Alexander,** Dept, of Chemistry, University of Pittsburgh, Pittsburgh 13, Pa. Silverman. William B.," Owens-Illinois Glass Co.. 17(XI Westwood Ave., Toledo 1, Ohio Simaviila. Juan M., c/o Cristalerias Rigolleau. S. A,, Beraza- tegui. F. C. S.. Buenos Aires. Argentina Simcock,: H. "Cranford," Lovart Ave.. Mileliuuse, New castle. Stafford. England Simison. A. L.,* Owens-Corning Fiberglas Corp., Toledo. Ohio Simmen.'Fred G. (SI. Vr Litwin. R. R- River Rd., Tardley, Pa. Simmingskold. Be. Glasinstitutet i Vaxjo, Sandgardsgatan 5. Vascjo.jiSweden Simmons. E. E.,'Jr, 455 S. Oakland Ave., Pasadena 3, Calif. Simmons. Milton L.. Ferro Enamel Corp., Cleveland. Ohio Simon. A. G- Antioch. 111. Simonds; Worden White Co. IF. R. Henryl. N. Summit St. S: Neglev Place, Dayton 7, Ohio Simonis. Paul. Admtnistrateur-delegue, Societe Beige de Ceramique "Cerabel," 2, rue de la Regence, Bruxelle, Belgium Simonseh. Eduardo C.. Companhia Paulista de Mineracan. S/A, Caixa Postal 3008. Sao Paulo. Brazil Simpson. Alexander (SI, 401 Charles St.. Turtle Creek. Pa. Simpson; Harold E.,** New York College of Ceramics. Alfred. N. Y. Simpson. Tames E. (SI, IS College Ave., New Brunswick. N. J. ? Simpson. Thomas. Simpsons Putters;. u:rf- Elder Works. Cobricge. Stoke-on-Trent. England Simpson. Thomas P., Socony-Vacuum Oil Co.. Inc.. Research 8: Development Dept.. Paulsboro. N. J. Sinclair.; Robert R.. 510 S. Osage Ave.. Inglewood. Calif. Sindusopon. Capt. Chaiie. Naval Signal Dept.. Royal Siamese Navy, Bangkok. Siam Singer. Felix.* Keramos House. 46. Castlemaine Ave.. S. Croydon. Surrey, Zr.oiaud Singmaster. James A.. 420 Lexington Ave.. New York 17. N. Y. Sirett. Lloyd D., 449 Second St.. Medicine Hat. Alta.. Canada Sirovy, George. Century Vitreous Enamel Co.. 6641 S. Narra- gansetc Ave.. Chicago 38. III. Siska. Albert HA <J^> U-M Lindsey Ave.. Miamisburg. Ohio Sissons. Gordon H., 320 First St- Medicine Hat. Alta.. Canada Sixt. Lawrence F- Box 3. Weilsville. Ohio Sjogren. John K.. Research Dept.. Norton Co.. Worcester. Mass. Skeilv, David C. (SI. 125 E. Nittany Ave.. State College. Pa. Skelly. John C. (SI, Old York Rd- Hartsville. Pa. Skeoch. Waiter K.. 320 S. Mission Rd- Los Angeles 33. Calif. Skillicom. Earl D- 147 Gould Ave- Bedfurd. Ohio Skinner.' Kenneth G-* Box 468. Norris. Tenn. Skinner.1! Roger D- 600 Montour St- Nlontoursville. Pa. Skurcenski. Anton. 1110 Ninth Ave.. Beaver Falls, Pa. Slayter,; Games. Owens-Corning Fiberglas Corp.. Newark. Ohio ! Slick. Ei E-, Jr., Haws Refractories Co- 407 Main St., Johns town. Pa. Sluss. Olen R- 715 S. Chapel St- Louisville. Ohio Sly, Billie D. (J). Kansas. Ala. SIvH. John A..* Battelle Memorial Institute. 505 King Ave.. Clolumbus. Ohio Small. Carlton F., Jr. (SI, Box 757. Alfred. N. Y. Smalley, Howard F- Research Div., Pemco Corp.. 2554 Green- mount Ave.. Baltimore i3. Md. Smart. Frank H.. 146 Walnut St_ Montclair, X. J. Smiley.; William D., Stanford Research Institute. Stanford. Calit. Smith de Stone, Ltd. (W. B. Ford). Georgetown, Ont.. Canada Smith. Adrian F., 88 E. Third St- Corning, N. Y. Smith. Alden ]., 338 Frederick St- Carey, Ohio Smith. Alfred \V- 156 Clay St- Denver 9. Col. Smith. A. O- Corp. (W. A. Deringer), 3533 N. 27th St- Mil waukee. Wis. 186 Smith, Arnold N . T 'g R iioole. Ltd.. Bursletn, Sta.Tord. England Smith, Charles A..' 226 WomJlawn. Mexico. Mo. Smith. Donald R. 'Si, 607 N. High St.. Apt. 2-K, Columbus Ohio Smith. Dudley C. Main & Chestnut. Yir.eiand. N J. Smith. Earl R.. Research Labs.. Pittsburgh Plate Glass C->.. Creighton. Pa. Smith. Frank A.. 2920 Mt. Diablo Bled.. Lafayette. Cain Smith. F. Guudn!:; Harttord-Empire Co., Box 1620. Hartford 2. Conn. Smith. G. Frederick. Chemistry Dept., University of lilir.ui-. Urbana. 111. Smith. Gail P.. E..\ 153A. R. R. 1. Corning. N. Y. Smith. Harry W. :Sd 1413 State St., Rolla. Mo. Smith. Herbert A... Paim. Fechteler A Co- Box 750, East Liverpool. Oiiio Smith. Hillard A..' 159 Chestnut Ave., Metuc'nen. N. J. Smith, H. Russell. Box 757. East Liverpool, Ohio Smith, James. United Fireclay Products. Ltd- Bathvillr Office. Armadale. West Lothian. Scotland Smith. James M- Jr., Snenango Pottery Co., New Castle. Pa. Smith. James N,, Jr.. 39 Pinecrest Parkway, Wilmington, N. U. Smith. J. Ernest. 1317 Putnam Ave- Plainrield. N. J. Smith. John J.. 1107 Highland St- Tarentum. Pa.. Smith. Karl W. 5., Charles Taylor Sons Co- Cincinnati 14. Ohio __ Smith, Kenneth ..** 4717 W. I6th St- Indianapolis 44, [nd. Smith. Lzlar.d. Bax 10067. Houston 18. Texas Smith. Ralph 0.. 30 Chestnut St- Salem. N. J. Smith. Richard M. (SI. 60 Meadowbrook Apt- Corning, N. Y. Smith. R. K.. 149 Reynolds Ave.. Corning, N. Y. Smith. Rowland D- 12 Woodlawn Ave.. Corning, N. Y. Smith. Rufus J.. Jr., 800 Park Ave- Goldsboro. N. C. Smith. Russell C.. Lincoln Trail, R. R. 5, East St. Louis, 111. Smith. Walter T.. 30 Austin St- New Haven 15. Conn. Smith. William L. (S), Box 25, Georgia Institute of Tech nology. Atlanta. Ga. Smock. Alden W . 41 Euclid Ave.. Columbus 1. Ohio Smoke. Edward J.. 199 Amboy Ave.. Metuchen. N. J. Smoot. Jack M.. R. R. 2, Atlanta. Ga. Smothers. W. J . 3ox 64. University Sta.. Fayetteville, Ark. Smyth. Harold T- New Jersey Ceramic Research Sta.. Rut gers L'niversity. New Brunswick. N. J. Sneddon. Robert, c/u Messrs. Burn 3: Co- Ltd.. Rauiguu; E. I. Rly- Ir.cla Snellman. Roger. Harbison-Walker Refractories Co.. 5-251 Generai Motors 3ldg- Detroit 2, Mich. Snoddy. John K.. 2501 Verbena Dr.. Hollywood 28. Calii. Snow. L. James ijl, Whitesviile. N. Y. Snow. K.iiand 3 . Research Lab- United States Steel Corn, Kearny. N J. Snyder. Ernest 3.A V.neeiir.g Steel Corp.. Steubenville S. Plant. Steubenville. Ohio Snvder. Herbert C. iSI, 106 College Ave., New Brunswick. N. J. ; Societa Italians Refrattari Marghera Azionaria (U. Guido j Ringleri. Via Industrie 23, Caseila Postale 23. Marghera. Italy Societe Francaise De Ceramique. Attn; Y. Letort. 44 Rue Copemic. Paris 16. France Society of Glass Technology, R. W. Douglas, Elmneid. North umberland Rd.. Sheffield 10. England Socony-Vacuum Oil Co. (\V. B. Stevens), 26 Broadwav, New York 4. N. Y. Soderstrom. Hakan. A. Ahlstrum Oy., Karhuia 8ruk. Karhula. Finland Soderstrum. William K. (SI. 1260 Chipeta Ave.. Grand Junc tion. Col. Sohn. Erwin.* National Sanitary Co- Salem. Ohio I Solomon. Earl A..* R. R. 2. Orchard Park. N. Y. 1 Solvay Process Div- Allied Chemical & Dye Corp- Librarian, f Syracuse 1. N. Y. Somers. A. J- Borax Consolidated. Ltd.. Regis House, King William St- London E. C. 4. England Somers. Wilford M- 16 E. Market St- Apt. B. Tiffin. Ohio Somerville. Thomas, III, Washington Brick Co- Muirkirlc.! Md. Sommers. R. H., Hevi-Duty Electric Co- 4212 W. Highland Blvd- Milwaukee. Wis. Sommerville. J. I--* 47 S. Second Ave.. Clarion, Pa. Sonders, Lawrence R. (J). 545 W. End Ave- New York 24 N. Y. Sondles. Merrill C- Paden City Pottery Co- Paden CitT4 W. Va. J Sonenshine. Lewis (SI, Box 229, Alfred. N. Y. Sontz. Arthur,* 4642 Lake Park Ave., Chicago 15, III. Sosman. Robert B.,** School of Ceramics. Rutgers Universi New Brunswick. N. J. Ceramic Bulle 5.>ut!i. Furman, Jr., !.au Crucible C". ui I'iti.-huryh. M.ih.i-h Bldg.. p: n.-huryh 22. Pa. Southern Potteries, lac. i.H. W. Kibicn. R.,x 279. Ervin. Term. Sovereign Potters, Ltd. (K. V. Miller i. Kainiiton. Out.. Canada Snwir.an. Harold G.. 9<13 S. Fourth St.. Champaign. ill. Spai;genfce.-g. William C. (Sb Box FF. Alfred. .V. Y. Sparks, Ecgar W.. atio L'naka Way. Erwin. Trim. Sparrow. Paul I'.. old Sliacty Ur. E.. Pittsburgh io. Pa. Sperimvii. C. Robert. 1158 Eastlake. Seattle. Wa>h. Speii. Sidnrv, Johns-Manville Cn, Research Lah.. Mattville. N'. ;. Spence. C. F.. 1004 Graiuloti Ate.. Bexley. Ohio Spence. Harold I., Kiahiti [rains i Cia. Av. 29 de Outuhro. 5-172 Meier. Rio de Jar.ieru. Brazil Spencer, Charles D.," Lamp Development Lab.. General Elec tric Co.. Xela Park. Cleveland 12. Ohio Spencer. Howard G., IIIA 232 X. Main St.. Suffolk. Va. Spencer-Strong. G. H..*f -11.14 Westview Rd.. Baltimore 18. Md. Spengler. H. H.. Glass Technology Lab.. General Electric Co., 1133 E. I52nd St.. Cleveland. Ohio Sperring. Richard F. (Si. 138 37th St. N.E., Cedar Rapids. Iotva Spiers. Henry R..* 1622 Pratt St.. Apt. B.. Wvnnewood Apts., Dallas, Texas Spiesniaiu James R. (SI. 3270 Lake Snore Dr., Chicago, III. Spinks, H. C., Clay Co.. Inc. fR. 3. Carothersi, Box 329. Paris. Tenn. Spires. Stephen T.,t North American Refractories Co., Mt. L'nion. Pa. Spoerry, Henry. J. Schntiiiheiny & Co.. Ltd.. Heerbrugg. (St.G.). Switzerland Spore. William D.. 420 Grant St.. East Liverpool. Ohio Spriggs. Richard M. (S). Alpha Sigma Phi, 328 E. Fairmont Ave.. State College. Pa. Sproar. Ira E..*T 58 Washington St.. Westport. Conn, j Spurck. Richard F.. 118(1 Regent St.. Schenectady 8. N. V. i Square D Co. (H. S. Freeman), 60o0 Rivard St.. Detroit 11. | Mich. ' Squire. Alexander. Westinghouse SPower Div., Pittsburgh 30. Pa. Electric Corp.. Atomic Staats. Henry N.. 5900 Northwest Highway. Chicago 31. III. Stacn. Ottn R., Carborundum Co.. Box 258. Perth Ambov. N. ;. Stadler. Leo E.. 44 Plymouth St.. Windsor. Conn. Stafficker. Charles F.. 634 Wood St., Apt. D., Vineland. N. J. Stafford. W. L.."* Ridge Rd., Spring Run, Martinsville, N. J. Stahl. C. 3.. White Hall Sewer Pipe & Stoneware Co., White StHaramll.an1r1.1. John. A.. TSA. 2410 Dwight Way, Be-keley 4. Calif. Staiego. Cr.aries J.. 227 N. Fifth St.. Newark. Ohio Standard Brick St Tile Corp. (Clifford A. Kleymeyer). Evans viile !9. Ind. Standard Clay Products, Ltd. Clifford T. Trotter), Box 189. St. Johns. Que.. Canada dard Ultramarine Co. ( L. F. May). Huntington 18. W. Va. Itangi Pottery ij. M. Stangl). Trenton 4, X. J. itangl. J. M.. Stangl Pottery Co.. Flemington, N. J. itanislaw. i. Stanley, Box 354. Centerport. L. I,, N. Y. tanworth. John E.. 24, Ringinglow Rd.. Ecclesall. Sheffield. England tapleton. Robert E. (S), General Delivery, Alfred. N. Y. far Porcelain Co. (H. Collin Minton. Jr.), Muirnead Ave.. Trenton 9. N. J. rk Ceramics, Inc. (J. H. Stewart). Box 230, Canton. Ohio 'tarkey. Uarvle D.. R. R. 1. W'illard, Ohio this. Andrew W. (S), F-31-A-2 Stadium Terrace. Cham paign. III. udt. August, 264 Water St.. Perth Amboy. N. J. inffer Chemical Co., 420 Lexington Ave.. New York 17, N. Y. j offer. Kenneth H. B. (S), 49 M. Water St.. Spring Grove. |Pa. avrolakis. J. A., 184 Hillside Rd. Apt. D., Oak Ridge. Tenn. Clair, John (S). West Valley, N. Y. ns, William E. (J), 3317-A N. Fourth St., Milwaukee, ms. C. 0.. I 23th St,, Pittsburgh. Pa. ele, G. Allen, 346 Cedarhurst Ave,, Dayton 7. Ohio ele. Harry L, Shorter & Son. Ltd.. Copeland St., Stoke* a-Trent. England ele, Hoyt P.. Benjamin Electric Mfg. Co.. Des Plaines. 111. Nle, J. C, & Sons (J. C. Steele. Jr.), Statesville. N. C. ele, J. C.. Jr., J. C. Steele & Sons. Statesville. N. C. de, Richard E., 293 Demorest Ave., Columbus 4. Ohio fen. Don WA (S), What Cheer Clay Products Co., What beer. Iowa 29, No. 10 (1950) Slvri. D'liiahl J.. 7'.* I::i Ave. K ,n: City. Pc. Stcil. Roy C. !Jjn Emeticn it . .'.tit. 10. Denver 5. Col. Stcimke. Frank C.. Jr . 4 Duchesne Dr. Florissant, Mu. Stein. Col me: Alan. Miiineid. Poimont. Stirling. Scoilnnii Stein. Colin H. 7 Meivilie Terrace. Stirling. Scotland Stein. Ronald C., .'Les-r.-. John G. Stem .v Co., Ltd.. P...:nn bridge. Scotland Steinbock. E. A... '.'.duo-Mix Corn, *1; W. Avery St., [.oir-- vilie 3, Ey Steiner. Harry C.. Electronic! Dept.. Li T Tube Div., Genera: Electric y.... Schenectady 5. X. Y. Steinltnff. Fred I..A" 'Industrial Publications, 5 S. Wihn,d. Chicago 3. 111. Sceinle. Leo O., Natiimal Gypsum Co.. 142 (iletunary Aw.. Cincinnati 20. Ohio Stelle, Joint A.. Arketex Ceramic Cnrp., Brazil, Ind. Stent, Howard R.. 3ox 1537. Nairobi. Kenya Colony. Ka-t Africa Stephan, Hans R.. 'Ai4 W. Damasons Rd.. Oak Ridge. Tenn. Stephens, Alexander H.. Ill iSi. 1100 Piedmont Ave.. Apt. 6. Atlanta. Ga. Stephenson. Kenneth D. 'Si. 145 Laurier 5t.. St. Johns. One. Canada Stephenson. Samuel R.. Jr. i Si. 2655 Moutevallo Rd., Birming ham, Ala. Sterling China Co. (William T. Pomeroy), East Liverpool. Ohio Sterling Grinding Wheel Div.. Cleveland Quarries Co., i A. E. Tuiki. Tifnn. Ohio Stern. Joseph. 175 E. Third 5t.. Corning. N. Y. Sternall, John A. <S), Box ISo. Walkerton. Cnt.. Canada Stetson. William C. (J), R. S. 3. Box 400 E., Charleston. W. Va. Stettinius. K. E.. Lapp Insulatur Co.. Inc.. LeRny, N. Y. Stettner, Donald H. (S). 739 Dennison Ave., Columbus. Ohio Steubenville Pottery Co. (ML J. Mould), Steubenville, Ohio Steuemagie. J. H., Brockway Glass Co.. Inc., 1047 Seventh Ave.. B ruck way. Pa. Stevens. Major Donald K.. Research & Analysis Dept., The Arty. School. Box 227 (AASGM Be) Fort Bliss. Texas Stever.s. Edwin F.. Box 952. heward. Alaska Stevens. Everett G. (S). Box 110. Rolla. Mo. Stevens. Francis E., Hudson Silica Co., Ltd., 880 Bay St.. Toronto. Ont.. Canada Stevens. Frank J.." 41-1 prusiiect 5:.. Xutiey 10. N. J. Stevens. Joe. Murray Refractories Co.. Box 353. Murray. Ulan Stevens. L. M.. 29*17 .Alabama St.. La Crescenta. Calif. Stever.s. Robert P.A Weilsviile Fire Brick Co., 1625 W. 104th Place. Chicago 45. III. Stevens. W. 3.. Socony-Vacuum Oil Co.. 25 3roadwav. New York -. V. Y. Stevenson. James K.. Jr.." R. R. I. Mundelein. Hi. Stevenson. Samuel. 1967 Grafton Rd.. F.Ivria. Ohio Steventon. Horace. John Stevrnton & Sons, Ltd.. Cu-dforu Works. Middlewich. Cheshire. England Stewart. Alex. National Lead Co.. Ill Broadwav, New York 6. N. Y. Stewart. J. G,, Braun Corp.. 2260 E. 15th St.. Los Angeies 21. Calif. Stewart. James ML H. (S), 216 W. Washington St., Lexing ton. Va. 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, Caiif. Stickley. E.. Pittsburgh Plate Glass Co.. Creighton. Pa. Stief. W. C.A 158 5. Wilson Blvd.. Mt. Clemens, Mich. Stillwater Clay Products Co. (J. P. Duffy), Lock Drawer 52. Uhrichsviile. Ohio Stock. Donald F.. 342 Bigelow St.. Pittsburgh 7. Pa. Stockdale. George F., 204 Ceramics Bldg.. University of Illinois. Urbana. 111. Stocksiager. Theodore F.. Carborundum Co., 1150 W. Third St.. Cleveland 13. Ohio Stockstrom. Arthur. American Stove Co.. 1641 S. Kingshign- way, St. Louis 10. Mo. Stoddard. Stephen DA (J), 921 Ninth St.. Golden, Col. Stoen. Roger C. (S), Cannelton Sewer Pipe Co., Canneltoii. Ind. Stotfer. Ross. American Clay Forming Co.. Tiffin. Ohio Stohl. Alfred A.. North St.. Sun Prairie. Wis. Stohl. L. A.. Wisconsin Porcelain Co.. Sun Prairie. Wis. Stoin. S. M.. Dalton. Ohio Stola. John O.. Oak Park Ceramic Co.. 6336 Roosevelt Rd.. Oak Park. 111. Stolte. Norman H..r 5974 Orchard Rd.. Cleveland Heights 21. Ohio Stone. Conrad A.. 93 S. Remington Rd.. Bexley, Columbus 9. Ohio 3S7 Stone. C. P.. Ferrainie Industries. Ltd.. Hydewa;.. Welwyn Carden,1 City, Herts. England Stone, Robert J., John W. Higman Co., 24 Slate St., New York 4/ Y. Stone, Robert L..*T 263 E. N'ortliridge K<1.. Columbus 2, Ohiu Stone, b. A.. Deister Concentrator Co.. 901 Glasgow Avc.. Fort Wiayne. lint. Stong, Guy E . -C3 Luvel! Ave.. Elmira. N. Y. Stuckey.Stanley D, 145 Pritchartl Ave., Corning, X. Y. Stoops. Robert 1'. (Si. 150 W. Norwich St.. Columbus, Ohio Stopka. Viktor, Rakovnik Ceramic Works, National Cjrp., Rakovmk. Czechoslovakia Storper. Samuel J.t (J), 207 ,E. 120th St., Xew York 35. X. Y. Stotler. Glialmcr P., 223 Winter St., Cronksville, Ohiu Stott. A. E.. Edward Johns & Co., Ltd., Armitage, Rugeley. Stafford. England Stout. Bvrl M,, 32 Ransumc St.. Port Allegany. Pu. Stout John R. (S), North Carolina State College. Raleigh. N. C. Stout. Joseph V., 13802 Cedar Rd.. Cniversiiy Heights. Cleve land 18. Ohio Straaley, Norman H.T (J), Class Bead Uept., Svutchlite Plant. Minnesota Mining & Mfg. Co., St. Paul. Minn Straight. Lee H.. Iowa Clay Products Co., Centerville. Imva Strain. R. E.. Alliance Ware, Ltd.. 1590 Powell St.. Van couver! B. C., Canada Strand. Richard, Western Stoneware, Monmouth. 111. Strang, William C. (S), 195 Meadowbrook Ave., Youngstown, Ohio Stratton.j Mrs. \V. B., Pewabic Pottery, 10125 Jefferson Ave., Detroit 14. Mich. Streator; Brick Co. (D. P. Ogden), Screator. 111. Stringieilow, Allen E. (J), 202-C Garfield Ave., Collingwood 7. N. J. Strong, Kenneth B.. Hillsboro Dr,, Nashville. Tenn. Strong, Robert O. (S), 466 W. Delavan Ave., Buffalo 13, N. Y. 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.,* 2539 Dresden Rd., Zanesville, ville. Ohio Structural Clav Products Institute fHarry C. Plummer), 1520 18th St. N.W.. Washington 6. D. C. Struebing, Harold J., 1233 Kenmore Ave.. Buffalo 17, N. Y. Stubbs. John M. (S). Box CC. Alfred. N. Y. Stuckey, Jasper L.. University of North Carolina. Raleigh. N. C. Stuckey, Robert C., Knox Porcelain Corp.. Box 2031. Knox ville. Tenn. Stufft. Paul C.. 2302 Inglewood Ave.. Baltimore 14. Mri. Stuntz. Robert P., Babcock & Wilcox Co.. 105 S. LaSaile. Chicago J. III. Stupakoff Ceramic & Mfg. Co. (Semon H. Stniiakoffi. La- trobe. |! Pa. Stupakoff. Ssmun H.. Stupakoff Ceramic 4 Mir. Co.. Latrohv. Pa. Styer. Charles A., 11 Roxhurv Rd.. Forest Hills. Pittsburgh 21. Pa. Styhr. Karsten H.. Jr. (S), Box J-3, Alfred. X. Y. Subrahmanyam, Sanga V. (S). Box 842, State College. Pa. Suga. Arthur M., 3223 Chestnut St.. Philadelphia 4, Pa. Sugden, John A.. "Starston." Church Hill, Horsell. Woking. Surrey, England Sullivan, Eugene C..* Corning Glass Works, Corning, N. Y. Sullivan. J. C. (J), 131 Queen St.. Sarnia. Ont.. Canada Sullivan. John D.,* Batteile Memorial Institute, 505 King Ave.. (Columbus 1. Ohio Sullivan, Paul A. (S). 3ox 163. Friley Hall, Ames, Iowa Stlmerbank (Biilent Biiktas). Ankara. Turkey Summerhavs, Louis ].. William Summerhays Sons Corp.. 620 Clinton Ave.. S.. Rochester 20, N. Y. Summers. E. W,, Owens-Illinois Glass Co.. General Engineer ing Dept.. Alton. III. Summers. Michael F. fS), 303 E. Tenth St., Rolla. Mo. Sumpter, Charles E., 6820 Magoun Ave., Hammond. Ind. Sumrell. Ferrall N.. 707 Henry St., Uniondale, Hempstead. X. Yi Supera; Jules. 12602 Eastbrook Ave.. Downey. Calif. Sor Enamel & Stamping Works, Ltd. (M. M. Sur), 9 Middle Rd_ Entallv. Calcutta. India Sur. M: M,, Sur Enamel & Scamping Works, I.trL. 9 Middle Rd. Entallv. Calcutta. India Surface Combustion Corp. (Harvey C. Weiler), 2373 Dorr St.. Toledo I. Ohio Surtieer. Haroid, Kaylene Labs.. Waterloo Rd., London N.W. 2, England Sutherland. Clark, Pacific Clay Products, 306 West Ave. 26. Los Angeles 31. Calif. Sutherland, Frank R.7 (J), 6900 State Rd.. Parma, Ohio 388 Sutpricn, F G., Research Library. Arnico Steel Corp.. Middletown, Ohio Sutterlin. Frederick. Seammcil China Co., Trenton 10. N. j. Sutton, Donald C., 928 N. Kickapou St.. Lincoln, LI. Sutton. Willard H. i.Si, Box G-l, Alfred. N. Y. Sutton. W. J.. Alfred. N. Y. Suva, W. E.. 1154 ISth N.. Seattle 2. Wa,h. Svec, J. J..* 3449 i. Euclid Ave., Berwyn. [11. Swain. Stephen M.,'T 3403 Spangler Rd., Cleveland Height.- 12. Ohio Swaim, Phaon H.. Box 173. Kingston. Ont.. Canada Swan. S. D.. Dentists' Supply Co.. York, Pa. Swank. C. Ferguson, 1105 Fidelity Bldg., Cleveland 14. Ohio Sweely, B. T..*T Chicago Vitreous Enamel Product Co., 1407 S. 55th Court, Cicero 50. 111. Sweitzer. Mark, 320 N. Euclid, Pasadena 4, Calif. Swenson, George W.. Minnesota Mining 3: Mig. Co., SOD Fauquier Ave.. St. Paul 5. Minn. Sweiitzel, John P., 2442 Pierce Ave.. Niagara Fails. N. Y. Sweu, Benjamin J.,* Ferro Enamel Corp., 4150 E. 56th St.. Cleveland 5, Ohio Swicker. Victor C.,* 873 Subway Terminal Bldg., Alexander H. Kerr 4 Co., 417 S. Hill St., Los Angeles, Caiif. Swiit. Howard R., Libbey-Owens-Ford Glass Co.. 1701 E. Broadway, Toledo 5, Ohio Swindell Brothers, Bayard 4 Russell Sts.. Baltimore. Md. Swindell-Dressler Corp. I Phiiip Dressier), Box 1888, Pitts burgh 30. Pa. Swinnerton. Bertram B.t"31 Second Ave., Tiffin. Ohio Swinnerton. George R., 35 E. State St.. Alliance. Ohio Sylvania Electric Products, Inc. (B. S. Elletson). 2CS-20 Cross Island Parkway, Bayside, Long Island, N. Y. Sylvester, George R..f Sylvester 4 Co., 535 Terminal Tower.. Cleveland 13. Ohio Szymaszek, Jan \V., 121 Muir Ave., Niagara Falls. Ont., Canada T Tait, Leonard G., Inca S. A.. Casilla 345, Lima. Peru Takanasiii, Kahuicniro. Nippon Glass Co. Ltd., 1, Ginza 7- chtnne. Chun-Ku. Tokyo, Japan Talhnt. Herbert W.. Jr.. National Lead Co., 1376 River Ave.. Pittsburgh 12. Pa. Talhott. Paul T.A 501 Aten Ave.. Wellsville. Ohio Tall. W. R.. Western Electric Co. Inc., Hawthorne Sta.. Chi cago 23. 111. Tallman. W. S.. 2020 Janies Ave.. Chattanooga. Tenn. Talwalkar. T. W., 3 3agmati Rd.. Jamshedpur, India Tan, Wen i5). 4043 12th Ave. N.E.. Seattle 5. Wash. Titthcrg. Ragitar. Drammens (ilassverk. Drammen. Norway Tan. Vunit 'Si, Box 239. ALreu. N. i. Tarnninii. Miiton S., 943 Ninth Ave.. Bracketiridge. Pa. Tarnv. Eugene G. iSl. Box BB, Alfrzd University, Aitred. N. 'Y. Tate. Frank E.A 310 Tenth St.. Lincoln. 111. Tauber. John A..* 1424 Powell St., Norristown. Pa. Tayb.r, Caiit. A. L. (J), Headquarters AMC. Box 1794, Wright Field. Dayton. Ohio Taylor. Albert J. (S). 1204 W. 44th St.. Austin. Texas Taylor. Cliaries D., 216 Corriher St.. Salishury. N. C. Taylor. Charles H.. Jr.. Box 54, Almond. X. Y. Taylor. Fran Burn, 210 Pierce Ave.. Lancaster. Ohio Taylor, Howard L. (S'). Box 96. Alfred. N. Y. Taylor, Howard U. (S). 4653 N. 30th St.. Milwaukee 9. Wis. Taylor, John B., Louisville Pottery Co., 223 E. Bloom. Louis ville 3. Ky. Taylor. J. J., The Ohio Brass Co.. Barberton. Ohio Taylor, J. J.. 3342 Chapman St.. Los Angeles 4], Caiit. Taylor. Nelson W.,,* Central Research Dept.. Minnesota Min ing 4 Mfg. Co.. 367 Grove St.. St. Paul I. Minn. . .Tavlor. Robert B.. 20 X. Wacker Drive, Room 440. Chicaji 6 111 Taylor. Smith & Taylor Co. (Charles R. Ijmihack), Chestc W. Va. Taylor, Thomas ].. 6837 Souder St.. Philadelphia 24. Pa. Taylor, William C..* Corning Glass Works. Corning, N. Y.S Teague. Jo M., Jr.A Owens-Illinois Glass Co.. Duraglas Ce* ter, I4th 4 AdamsSt.. Toledo, Ohio i Teeter, John N., 330 Cave! Ave.. Highland Park, 111. fl Teetor. Paul,.* Staso Milling Co.. Bound Brook. M. J. 1 Tefft. C. Forrest.*? Claycraft Co., Box 866, Columbus S Ohio Tefft. Phillip W.,t1544Guilford Rd.,Columbus. Ohio a a Tegellaboratoriet (Christer Enberg) Box 5073, Stockholm a Sweden Tennant. C. Sons 4 Co. (Edwin F. Koch). 100 Park 3a New York, N. Y. Ceramic Bull. Terazawa. M,, The Nagoya Seitosho, 272, 5-ohomc, Vamaiia- Cho Nagoya, Aichi. Japan Terman. Mark }., Babcock A Wiictix Co., 2730 Koppers Bid?., Pittsburgh IV, Pa. ~crrill. Gerald, McKee Gla = s Co.. Jeannette, Pa. Terry, Grifrin E.. 602 E. Willow, Wheaton. Ell. Tetrick. James D..* Spring St., Cheshire. Conn. Thakur, Ram L. (S.>, Box 571. State College. Pa. Thatcher Glass Mfg. Co. ' Roy S. Arrandaie), 19<.>i Grand Central Ave., Elinira. N. V. Theobaid. Erwin F, 1510 IHt.'i St. N. W, Canton 3, Ohio Thermo Fire Brick Co. Howard Hicks), Sulphur Springs. Texas Theves, Guiil, 1 Rue Glescner. Luxembourg City, Luxembourg Thews. Karl B., 33-09 Talbot St., Kew Gardens. L. I.. N. Y. Thielke, Norman R. (.S), Mineral Industries Bldg., State College. Pa. Thiemann, John W5 i)), 8525 Butler Ave.. Detroih Mich. Thiemecke. Harrv W.,*r Horner Laughiiu Ciiina Co.. Newell, W. Va. ` Thiess. L. E..* Porcelain Mi'g. Div., General Electric Co., Schenectady 2. N. Y. Thomas, Charles A. G., E. J. & J. Pearson, Ltd., Firebrick Works, Stourbridge, England Thomas, Charles L.. Box 9. Morton Grove. III. ihomas. Charles W. (Honorary.). Cliittm House, Old Swin- ford. Stourbridge, England Thomas, David WM Stangl Pottery. Trenton. N. J. Thomas, Everett A.,T 771 Revere Ave., North Tonawanda, N. Y. Thomas, H. H,, Gletiarm P. O.. Baltimore County, Md. thotnas, Robert H., Box 202. Newton Falls, Ohio Thompsen, R. S. (S), Box 3765, Virginia Tech. Sta., Blacks burg, Va. Thompson. A. Paul, Research Laboratories, The Eagle- Picher Co.. Joplin, Mo. Thompson, Charles W,, R. R. 1, Coopersburg, Pa. Thomoson, Clvde L.,*T 4922 New Plymouth Rd, Pittsburgh 27. Pa. Thompson, Franklin S.. 23 Schenck Ave., Matawan, N. J. Thompson. Frederick S.. Coriiart Refractories Co., Inc., 16th St Lee Sts.. Louisville 10. Ky. Thompson, G. L., Borax A Chemicals Ltd.. 229 High Hoiboru. London W. C. 1. Etigland Thompson, John D., 20740 W. Chicago Blvd.. Detroit 23. Mich. Thompson, M. W,, Hall China Co.. East Liverpool, Ohio Thompson. Noel M.. 721 Shady Lane. Pittsburgh 34, pa. Thompson. Paul G, 33 E. Oakland Ave.. Columbus I, Ohio Thompson. Thomas E.. Box 252. Williams Bay, Wis. Thomson. H-.-ner G.. 211 N. 38tii St.. Wauwatosa 13. Wi>. ihomson. James K." ( H. General Delivery, Maueira. Ohio Thor. Murner E.. 270 Highland Parkwav, Ant. 2. Buffalo 23. _,N. .V- ihoriey, J. Palin, Box 1143. Jamestown Rd.. Williamsburg. Va. Thornton, George A., Ottawa Silica Co., Box 437. Ottawa. 111. Thornton, Paul EM 269 Beeier Drive. Berea. Ohio Thornton, r Allan. Jr.. 2914 Western Ave.. Park Forest. III. Thropp, Herreld D.. Eureka Flint A Spar Co., 190 W. State .St.. Trenton 8. N. J. Thuener. Everett E., 14 Catherine St.. Schenectady 7. N. Y. Thuiie, Jean. 3 Rue Richer-De-Belleval. Montpellier. France Thumauer. Hans.*T 1811 Hixson Pike. Chattanooga 3. Tenn. Tibbals. Harvev LM Apt. 203. 1176 University Wav, Berkelev, Calif. Tice, George M., Jr. IS). Cold Springs Mining Div., Vara Engineering Co.. Ellard. Va. (Tjede, Ralph L.. 53 Myrtle Ave.. R. R. 2. Newark. Ohio yJj'rjtann. Arthur R.t ( J). H. C. Spinks Clay Co.. Paris. Tenn. JBftickjian. John D., 1278 Euclid Ave.. Zanesville, Ohio ftllotson. Clifford, Tillotson Refractories Co., 1112 W. Sixth Corona. Calif. Wlotson. E. Ward.* Mellon Institute. 4400 Fifth Ave.. Pitts- fcborgh 13. Pa. phius. John O. (S), Box 5493, Georgia Institute oi Techrnology. Atlanta. Ga. fe^lepaugh, James R.,t Air Forre Project. New York State College^ of Ceramics. Alfred. N. Y. j|ley, Stanley G., British Titan Products Co., Ltd.. Kronos house. Coppergate. York. England pping, J., United Glass Bottle Mtgrs.. Ltd, S Leicester St., radon W. C. 2. England itnn Alloy Mfg. Div, National Lead Co. (Arthur R. utkowski). Niagara Fails. N. Y. (a. Henry B., North American Refractories Co.. SO Church It. New York 7, N. Y. pry, Rameshwarv P. (S), Education Dept, Govt, of C. P, pagpur, C. P. India 29, No. 10 (1950) Todd. E2-.v i R,, 1 557 Scot: Circ:ie. Enior y Hciur.ts. Decatur. Ca. Todd. Hei :ry, 17c0 Ljweil Ave.. Niagara rai!>, Out., Canada Toft. Cyri l E.,, 32s River view St... East Li verpool, Oilno Tokarski. y.z i ?:iie-x, Hutniczv Lutytui Bada.vczy. rCarola Miarki ii j /1 4. G1 twice. Poland Tom. Eizi u M , 3o5 o i'oerbrooke R d., T j 1 e du. Ohio 1omxi:i... L'av.d E.. 599 Norwood Ave.. New Castle. Pa. Tool. Arthur Q,* 305 Carroll Ave, Takorr.a Park 12. Me. Tooley. F. \ 1008 S. Garheld Ave, Urbana. III. T<<omey. James E, Patent Counsel. Kaiser Co, Suite 208. 1C00 '. cninn: Ave, Washington 5. D. C. Topping, John. Camegie-lllinois Steel Cor?, Pittsburgh. Pa. Torgal, K. G, 1050 Ar.arttashayan St, Beigauin. Bombay Presidency, India Torno, Ralph F, 369 Front St, No. 1. Berea. Ohio Tosteviu, Edgar R. fS), Box 42. Alfred. N. Y. Toulmin, H. A, Jr, Touimi.n 31dg, 308 W. Firs: St, Dayton 2, Ohio Toulouse. Julian H. 1317 Potomac Dr, Toledo 7. Ohio Trabert, Loren AM 1024 Dodge St, Lake Geneva. Wis. Trax. Alan M. (S), Klan Alpine, Box FF. Alfred. N. Y. Tredennick, Wiiliam TM 2100 Walnut St, Emhassey Apts, Philadelphia. Pa. Treischei. C. C,*f R. T. Vanderbilt Co, 230 Park Ave, New- York 17. N. Y. Trenton Potteries Co. i Jatr.es R. Beam), Plan: 6. 309 N. Clin ton Ave, Box 141, Trenton, N. J. Treptow, Arnold W, Bell Telephone Labs, Murray Hill, N. J. Trevathan, P. Edward. 2221 N. High St, Columbus 2, Ohio Trevor. John F, Moira Rd, Woodville. Burtou-on-Trent. Etigland Tribe, Harold G, Electricity Meter & Allied Industries, Lid, Box 4. Waterloo. Sydney, Australia Trine. Robert. 3637 Melrose Ave, Los Angeles 46, Calif. Trinklein, Robert I_ iOlo'.G Fletcher St, Anderson, Ind. Tripp. Harlan iS), 90 Franklin St, Morristown^ N. J. Trollope. Charles H,, University Chambers. 76--30 Elizabeth St.. Sydney, Australia Trumpeter. Bernard J. (S), 3525 Butler Ave, Detroit 11. Mich. Troqueies y Esmaltes, S. A. (Diego G. Sada), Box 371. Mon terrey. \. L, Mexico Tn.>t. Frank W. ,Si. Box 293. Alfred. N. V. Trostei. L. J," General Refractories Co, Box 1673. 3altimore 3, Md. Trostei, Louis I, jr. (Si. 4302 Miami Place. Baltimore 7. Md. Trott. R. ?.. General Abrasive Co, Inc, Niagara Falls, N. Y. Trotter. Clifford T, Standard Clay Products. Ltd, Box 139, St. Johns. Que, Canada Troy, H. Neal 'i*. Sox 751. Welch. W. .'a. Troy, Waiter J.. 388 Chili Ave, Rochester. N. Y. Tse. Shou-cheng iS). 1115 W. Illinois St, Urbana. III. i suei. C'nii-Shung. Tsuei Tsuen. Messrs. Mackinnon. Mac kenzie & Co, ?. & 0, Building, Hong Kong. China Tu. K. C. i Si, cro L. Y. Tu, Dept, oi Physics. Pennsylvania State College. State College. Pa. Tucker. Bradford 5, E. J. Lavino & Co, 1523 Walnut St, Philadelphia 2. Pa. Tucker. Donald J, Murray Ave, Huntington Vailev, Pa. Tucker, Edward F, Stebbins Engineering 3; Mfg. Co, Water- town. X. Y. Tucker. Harvey CM Ferro Enamel Corp, 4150 E. 56th St, Cleveland. Ohio Tucker. Roiand E, The Trenton Potteries Co, Trenton. X. J. Tulk. A. E, Sterling Grinding Wheel Div, Cleveland Quarries Co, Tiffin. Ohio Tung. Chi F. (S), Ceramic Dept, University oi Illinois. Urbana. III. Turbett. Paul E.` IS), 102 N. Highland. Apt. 5. Paris. Tenn. Turck. Raymond 1__ 906 N. Highland. Dearborn, Mich. Turissini. Robert (S). Alpha Phi Delta. State College. Pa. Turk. Kari, Sr.* Pemco Corp, 5601 Eastern Ave, Baltimore 24. Md. Turk. Richard H,*t 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. Turnbull. Robert C_ Box 611. Alfred. N. Y. Turner. A. A, 153 Lake Ave, Metuchen, N. J. Turner. Donaid. Messrs. Lodge Plugs. Ltd, Rugby, England Turner. Mort D,, 1424 Seventh St, Berkeley 2. Calif. Turner, P. P,, JrM 151 E. 233rd St, No. 18. Euclid 23. Ohio Turner. W. E. S. (Honorary), 30 Whitworth Rd, Ranmoor. Sheffield If). England Tuttle. Esther M,, Dept, of Engineering Research, North Carolina State College. Raleigh. N. C. 389 Turtle Georye N, Benjamin Electric Mig. Co.. Ues Plaines. III. Tuttle. Milton A.. Dept, of Ceramics, North Carolina Stale College. Raleigh. N. C. T wells, Robert,*T 72J W. Fremont St.. Fostoria, Ohio T wells. Robert G/ iS), 810 Crest Ave.. Ciiarleroi. Pa. Twyforls. Ltd.. Cline Vale Potteries. Stoke-on-Trent. Eng land T7gart Valley Glass Co. (E. A. Hinkins). Washington. Pa. Tyler, W. S.. Co. (C. E. Jenks), 3612 Superior Ave. N.E, Cleveland 14, Ohio Tym. James E.. Old M-ll. Bridgman. Mjch. Tysinger, Ted W. (S), 403 S. Hargrave St., Lexington, N. C. U Ueltz. H. F. G.. 39 West St., Worcester, Mass. Ugol. Louis (S), Box 19, Alfred. N. Y. Uhrmann. C. J, Imperial Glass Corp., Bellaire. Ohio L'lmer, Carl D, Hoppers Co.. Inc., Research Dept., Koppers Bldg., Pittsburgh 19, Pa. Ulrich, Robert J.. American Radiator 4 Standard Sanitary Corp.. 1341 S. Seventh St.. Louisville 8. Ky. Underwood. R. R,, Knox Glass Associates, Inc., Knox. Pa. Union Electrical Porcelain Works, Inc. (F. W. Van Orden), Box 762, Trenton 3, N. J. Union Francaise des Prodnits Refractaires (Louise Halm), IS Rue de Milan. Paris 9*. France United Clay Mines Corp. (K. E. Ward), Oakland 4 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 Gypsum Co. (J. S. Oftutt), 300 W. Adams St., Chicago 6. III. Universal Clay Products Co. (C. A. Bloor), Sandusky, Ohio Universal Dental Co. (Joseph Kohn), 48th 4 Brown Sts, Philadelphia 39. Pa. Universal Potteries, Inc. (G. D. Agnew), Cambridge, Ohio Universal-Rundle Corp. (M. A. Dantzier), 3305 W. Forest Home Ave., Milwaukee 15, Wis. Universal-Rundle Corp, Box 960, New Castle. Pa. Updike. George G. (J), 1613 Stonewood Rd, Baltimore 12. Md. Upton. Lee O, American Optical Co.. Southbridge, Mass. Urban, Richard F. (J), 448 E. Goepp St.. Bethlehem. Pa. Urban. Stephen F.. 268. Hartford Ave.. Kenmore 17. N. Y. Utah Fire Clay Co. (C. H. Myers). 1078 S. First West, Salt Lake City, UtahV V Valdes. Thomas H.. Apt. I-A. Mackland Manor Apts, 219 N. Jefferson St, Xittanning, Pa. Valentine Fire Brick Co. (W. H. Peterson. Jr.), Woodbridge, . >'- J- \ alentine, Peter C, 620 Market St, San Francisco 4, Calif. Valia. Bhayabhai H. (S), 4043 12th Ave. N. E, Seattle 5, Wash. Valyi, lisabe E, 70 Pine St, New York 5. N. Y. Van Alsten. Roy L/ (S). 1007 Tenth St, New Brighton, Pa. Van Cleave. A. A, 8100 McGroarty St, Sunlana. Calif. Van Cott, H. Corbin, 185 Fulton St, Corning, N. Y. Van Der Beck, Roland (S), Engineering Exp. Sta, Ohio State LTniversity, Columbus 10. Ohio Vanderbilt, R. T, Co. (Ira E. Sproat), 230 Park Ave, New York 17. N. Y. Van der Loo. W. P. M, Nederlandsche Vereeniging van Aardewerkfabrikanten, Parkstraat 37a, The Hague. Holland Vandermade. Richard J, 72 Summer St, Hawthorne, N. J. Van Dreser, Merton il (S), 203 Ash Ave, Ames, Iowa Van Dyke, Neil D. (S), 910 S. Third St, Champaign, 111. Van Fossen, Robert W. (S), Washington Brick 4 Lime Co, Spokane, Wash. Van Gelderen, L. P, N. V. Ramie Union, Enschede. Holland Van Godtsenhoven, Rene, 100 Brisee St-Denis, Obourg, (Hainaut) Belgium Van Gordon. Donald V, 120 W. Second Ave, Roselie. N. J. Van Horn, Harry T, 75-29 260th St, Floral Park, L. !., N. Y. Van Houten, Louis A. (S). U.S.N. Naval Intelligence School, Naval Receiving Sta, Washington. D. C. Vaniclc. James S, International Nickel Co, Inc., 67 Wall St, New York 5. N. Y. Vann. J. Graves, Jr, 405 Vine St, East Liverpool, Ohio Van Nieuwenburg, C. J, Laboratorium voor Analytische 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. 390 Van ocimick. Emily C,` New \ ork State College of Ceram ics, Alfred, N. V. Van Schoik, Dickson M. (S), 363 E. 14ih Ave, Coiunih-.i-. Ohio Van Tassel, R. H, 527 Green Tree Rd, Kohler, Wis. Van Viack. L. H, Metallurgical Laboratory, South W,,rkj. 3426 E. S9th St, Chicago 17, 111. Van Zee. Arthur F, 3430 Inverness Ave, Toledo 7, Ohio Vara van:. L'ttarakarar (S), 4142 !2:h Ave. N.E, Seattle 5, Wash. Varga, Eugene L. (SI, 210 Forsythe St, Chattanooga. Term, Vaughan. T. Carter/ Libbey-Owens-Ford Glass Co, 3u.x 4273. Charleston 4. W. Va. Vaughan. W. Harry,*t Atlanta Industrial Laboratories, 746 DeKalb Ave. N.E, Atlanta. Ga. Vaught, John C. (S). 217 S. Hyland. Ames. Iowa Veale. Jack H, 80 W. Willow St, Coal City. III. Venable, Charles R, Jr./ 1709 Longview St, Kingsport. Tenn. Venable, Joe G, Chattanooga Glass Co, Chattanooga 10, Tenn. Venis, Ernest. British Vacuum Flask Co, Ltd, Lissenden Works. Gordon House Rd, Kentish Town. London N. W. 5. England Vera. Ing Francisco/ Hidalgo 1753 Pte, Monterrey N. L,, Mexico Vernetti, John B, 530 \V. Schantz Ave, Apt. 4. Dayton 9. Ohio Verzocchi, Enrico, Retrattari Verzocchi, Via Telesio 5. Milano. Italy Vesuvius Crucible Co. (Francis L. Arensberg). Box 3275. Swissvale. Pittsburgh IS. Pa. Vickers. A. Eric J, Wvnnstay, Millfield Rd, Whickham, New Castle-Upon-Tyr.e. England Victor Insulators, Inc. (H. Failmezger), Victor. N. Y. Vidriera Monteriey, S. A. (Alfonso F. Rodriguez). Apartado 162. Monterrey N. L, Mexico Viger. Burnett C, 130 E. Third St, Corning, N. Y. Vilensky, Michel B, 1515 27th Ave, San Francisco 22, Calif. Vinal, Francis E, Rm. 4-007, Massachusetts Institute oi Technology. Cambridge 39, Mass. Vincent. George L./ 10 Farrington Rd, Oceanside. N. Y. Viiiiher, E. Heikel. Porcelainiabriken Norden, Vaiby Lang- gade 95. Copenhagen. Denmark Viola. Nazzareno iS). Box 191, Alfred. N. Y. Vitolo. Sylvester A. (S), Box 4408. Virginia Polytechnic In stitute, Blacksburg. Va. Vitreous Steel Products Co. (Edgar H. Weil). Box 1761, Cleveland 5. Ohio Vitro Mfg. Co. (Theodore Lenchner), 60 Greenway Dr, Pitts burgh 4, ?a. Vodicka. Albert L.. Aetna Porcelain Enameling Co, 47(11 Augusta Blvd, Chicago 51. iii. Vogl. Thomas P. (S), 100 Morningside Dr.. New York 27. N. Y. Vogt. Harold G,, Corning Glass Works. Corning. N. Y. Vollmuth, R. L. (S), Valley Queen Manor. Apt. F.. R. R. 1. Newtown. Pa. Vollrath Co. (Jean C. Vollrath), ISth and Michigan Aves, Sheboygan, Wis. Vollrath. Jean C, Vollrath Co, 18th 4 Michigan Ave, She boygan, Wis. Von Allesch. Marianna, Clay 4 Glass, Inc, 50 W. 13th-St, New York, N. Y. Vontury. Francis J, Lehigh Ave, Perth Amboy, N. J. Voornies. John H,, 243 Arrow Highway, Claremont. Calif. Vose, Wilfred. New Zealand Pottery 4 Ceramic Research Assn, 111 Sydney St, Wellington. New Zaaland 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. Vukovich. Milan, Jr. (S), 1162 E. Mound St, Columbus. Ohio W Waggoner. Jack H, 240 Quentin Rd, N, Newark, Ohio Wagner, Bruce F, 186 N. Vernon Ave, Pasadena 3, Calif. Wagner, Charles D. (S), 1606 W. Washington St, Champaign, IIL Wagner, Harry E.. Jr, 2691 Hibbert Ave, Columbus. Ohio Wagner, Rio B, 4540 E. Main St. Columbus. Ohio Wagner, William D, 289 Reinhard Ave, Columbus 6, Ohio Wahab, Mohammed A, Y.M.C.A, Rm. 105. Tiffin, Ohio Wahlgren, Wald, A. B. Gustavsbergs Fabriker, Gustavsberg, Sweden Wainer. Eugene, Horizons, Inc, 2391 E. 79th St, Cleveland, Ohio Waite, Virgil H, 433 Beech St, Berea. Ohio Ceramic Bulletin Wake He ill, Richard E. B., Shallcross Mfg. Cu, Coiiiugdali:. Pa. WaMei:, Albert National Carbon Co., Cleveland, Ohio U'a.'dschmidt. Milton H..' Battclle Memorial Institute. 505 King Ave.. Columbus 1. Ohio Walker, A. M., Australian Tesselated Tile Co., Mitcham. Vic toria. Australia Walker. Eugene E,, 220 W. Sheridan Ave., New Castle, Pa. Walker, Frederick L., Jr., H3 Champlain Ave., Decatur. Ga. Walker. Geoffrey E, J. Mayland Crott, College Hijl Rd.. Harrow Weald. Middlesex. England Waiker. Karrv (S). -Mi Great Oaks. Rolla. Mo. Walker, Henry E., Harding Glass Co., Fort Smith, Ark. Walker, Herbert M,, Walker China Co.. 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. Victor H. J. (S), 6 Leonard Apts., 475 Maitland St, London, Ont., Canada Walla, Max R. (S), University of Texas. 1709 N. Congress, Austin, Texas Wallace, Curtis C, Electric Storage Battery Co., Allegheny Ave. 5: 19th St., Philadelphia 32, Pa. Wallace. Paul F. (S), 806 Washington Ave.. Tyrone, Pa. Wallace. William W.. 415 Centennial St., New Castle, Pa. Waller, Ronald Electric. Lamp Manufacturers flndia). Ltd., No. 7, Justic Chandra Madhab Rd., Calcutta 2(h India Wallingford, W. H., Alamo Pottery, Inc., Box 436?, 5ta. A, San Antonio, Texas Walmsley.' William L,, J3 Hillcrest Ave.. Washington, N. J. Walsh, Donald ., 2507 St. Clair Ave., East Liverpool. Ohio Walsh Refractories Corp. (]. L. Crawford), 101 Ferry St.. St. Louis 7, Mo. Walterspiler. Luc, Societe Fran edis des Fers Emdilles, 29-31 Rue Boussingalt. Paris XIII, France Walton. Irving (S), Box 107. Alfred. N. Y. Walton. Jesse D.. Jr. (S). 6819 Virginia Ave.. Parma 9, Ohio Walton, S. F..*f Exolon Co.. Tonawanda. N. Y. Walworth. Chester A.. Libbev-Owens-Ford Glass Co., Box 4278. Charleston 4, W. Va. Wamboid. Jack (S>. 69 N. Landon Ave., Kingston, Pa. Wampler. Roy VV., Libbey-Owens-Ford Glass Co., Technical Bldg-, 1701 E. Broadway, Toledo 5, Ohio Wang. Harold E. M.. Wah Chang Trading Corp., 5103 Wool- worth 3ldg, New York 7, N. Y. Ward. Charles J.. 1958 Cameron St.. Regina, Sask.. Canada Ward. Clifford D., 74 S. San Gabriel 31vd., Pasadena 10, Calif. Ward. George V.. 312 E. 15th St., R. R. 3, Dover. Ohio Ward. George W, Gustin-3acon Mfg., Co., 1412 W. 12ih St.. Kansas City, Mo. ' Ward. K. E.. United Clay Mines Corp.. Oakland & Prcspec: Sts.. Trenton 6. N. J. ; Ward. S. Paul, 605 Mission St.. South Pasadena, Calif. Warde. John M, 1706 E. Lafayette Ave., Baltimore. Md. WarSeld. Robert .A., 2460 E. Livingston Ave., Columbus 9, Ohio Warner, Maurice F. (S). 2420 Virginia St., Berkeley, Calif. Warren. Arthur W., C/-A.CI. Refractories Pty., Ltd., Box 18. Alexandria. Sydney, N. S. \V,, Australia Warren. George.f 3217 Connecticut Ave.. Apt. 44, Washington, D. C. Warriner, Lendall ?.. Appalachian Minerals Co., Monticello. Ga. Waryga, Casimer F, 1?07 N. Marshall Sc, Philadelphia 22. Pa. ..Washabaugh. Grover C., Jr.. 301 Northvie'.v, New Castle. Pa. Washburn. C. E.. General Refractories Co., 3201 Fruitiand Are.. Los Angeles 11. Calif. . Washburn. Lucius H., Box 242. Alfred, N. Y. ,Washington Brick Co. (Thomas Somerville III), Muirkirk. 1 di Washington Porcelain Co. (C. H. Ackerson), Willow St, //Washington. N- J. yfattrs, Martin R. (J), River Rd., c/o Mrs. Dixon. Yardley, (Vitkin. Robert W., 2507 St. Clair Ave., East Liverpool. Ohio flntinns. Donald, 128 E. Fifth St. Emporium, Pa. Hjukins. George B., Libbey-Owens-Ford Glass Co.. 1701 E. |^Broadway, Toledo. Ohio KitJans, Joei H, Charlotte C H_ Va. ^htkins. Ray T.. U. S. Tariff Commission. Ceramic Div, ^Washington. D. C. ^HtJrins. Richard A. fj). Box 193. Campbell, N. Y. ^tfcins. S. J., 828 S. Garfield. Hinsdale. 111. Htfcins. W. J., Kentucky Clav Mining Co., Mayfield. Ky. Hbon, George F., American Brake Shoe Co.. Metallurgical Mahwah. N. J. ^son, James M. (S), 700 First Ave., Farmville, Va. L 29, No. 10 (19.50) U'atM.n. 'A illiani A, ill iS', 700 First Ave, Farmville, Vi, Watt, Loren. V>ati Pottery Cu, Crooksville. Ohio Watt Pottery Co. iLuren Watt), Crooksvilie. Ohio Watts, Arthur ?,, A C Spark Plug Div, General Motors Corp, Flint. Mich. Watts. Arthur S."T i l.ite. Honoraryi. Lord Hall, Ohio state University. Coijmfcus 10, Ohio Watts. E. F, Binks Mfg. Co, 3114 Carroll Ave, Chicago. 111. Watts. Gerald F, A. E. Hull Pottery Co, Crooksviiie. Ohio Weatoii. Ralpii i... St. Joseph Lead Co. of Pennsylvania, 2-r.c Smelting Div, Monaca, Fa. Weaver, 2. Douglas. Box -U3, Laker,eld. Or.t., Canada Weaver, K. F, Peerless Pottery, Inc, 917 N. St. Joseph Ave, Evansville 12, Ind. Weaver. R. A,* Ferro Enamel Corp, 4150 E. 56th St, Cleve land 5. Ohio Webber, John J, 495 Moull St, Newark. Ohio Weber, Bertholc C, 308 Wallace Dr, Apt. D. Fairborn, Ohio Weber, Don A, Diester Concentrator Co, 901 Glasgow Ave, Fort Wayne, Ind. Weber, Kenneth E,, 2742 Bennett Ave, Evanston. 111. Webster, Charles E,' 311 E. Beaver St, Zelienople, Pa. Webster. Hugh 3, Harshaw Chemical Co, Swanson & Jack- son Sts, Philadelphia 48. Pa. Webster, Paul A, Moravia Rd, Avon, Conn. Weddell. George G, Meilon Institute. Pittsburgh 13. Pa. Wehtje. Ernst J, 3ox 269, Malmo 1, Sweden Wehtje. Karl F, A.'B Rorstrands Porslinsfabriker, Lidkdping, Sweden Weidel. Robert A, 1233 N. Goodman St, Rochester 9. N. Y. Weidman. V. Wesley, 201 Duncan Ave, Wilmington 284. Del, Weigel. Robert C,, 820 Woodlawn. Mexico, Mo. Weil, Edgar H, Vitreous Steel Products Co, Box 1791, Cleveland 5. Ohio Weinfurtner. E. M, North American Refractories Co, Na tional City Bank Bldg, Cleveland 14, Ohio Weinland. Louis A, Box 104, Alfred. N. Y. Weinstein. Alex. 200 N. Water St, Peekskill. N. Y. Weintritt, Donald J. (S), 6816 Beechwood St, Houston 21, Texas Weise. Robert L, 171 N. Mulberry St, Logan. Ohio Weiske. Tno, Box 353, Mission. Texas Weiss. E. Joseph/ 3603 Cherry Lane. Austin, T-xas Weiss. W. Russell. Wellsville. Mo. Weissmann. Theodore.' 445 Central Ave, Cedarhurst. N. Y. Welch. A. Philip' (S), 1823 N. W. S. Ave, Apt. 3. Gainesville. Fla. Welch. John C, Jr. t'S), 114 W. Steuben St, Apt. B, Crafton. Pittsburgh 5. Pa. Welch, Richard I__ Dominion Firebrick 3; Ciay Products. Ltd, Claybank. Sask, Canada Weller. Harvey C, Surface Combustion Corp, 2375 Dorr St, Toledo 1. Ohio Wells. A. A,* Homer Laughlin China Co. Newell. W. Va. Welts, Evon ?. (J), 24 Seventh Ave, Haddon Heights. N. J. Wells, J. M,, Homer Laughlin China Co, Newell, W. Va. Weils. Lloyd L, Jr, 3611 Wallace St, Chicago 20, 111. Wells. Raiph G, 8720 Mozart Ave, Chicago 42. 111. Welsch. William W. (J), 504 Fourth Ave, Joliet. III. Welshans. L. T, Diamond Alkali Co, Painesville. Ohio Wen. Ho-Yang (S). 4135 Brooklyn Ave, Seattle 5. Wash. Weiicze!. C, '.Vencrel Tile Co, 3ox 908. Trenton, N. J. Wenczei Tile Co. (C. Wenczei) Box 908. Trenton, N. J. Wendt. Nelson E,, American Potash & Chemical Corp, 122 E. 42nd St, Ne-.v York 17. N. Y. Wenger. A. K. C, Messrs. Wengers. Ltd, Etruria. Stoke-on- Trent. England VVenning. W. r. Ceramic Color 3t Chemical Mfg. Co, Box 297. New Brighton. Pa. Werner. Alan T,, 159 Watauga Ave, Coming. N. Y. West. Frank. Kaslemere Greenlane. Buxton, Derby, England West. Howard F, 261 Oneida St., Joliet. III. Western Brick Co. (I. R. Cline). Danville. 111. Western Electric Co, Inc. (W. B. Tall), 7310, Hawthorne Sta, Chicago 23, 111. Western Feldspar Milling Co. (J. W. Magnuson), Box 4176, South Denver. Col. , Wesringhonse Electric Corp. (John D. Harnish. Jr.), Derry,. Pa. Westingboose Electric Corp. (Joseph Early), Fairmont, W. Va. Westlake. C. Rogers' (S), Short Acres. R. R. 2. Sycamore, III. Westman. A. Z. R,* Ontario Research Foundation, 43 Queen's Park, Toronto 5, Ont, Canada Westmont, O. B,, Johns-Manviile Products Corp, Lompoc, Calif. Weston. Ralph H,f Arketex Ceramic Corp, Brazil. Ind. West Virginia Brick Co. (Claude F. Wiseman). Charleston, W. Va. 391 Weyi, Woldemar A.,* Dept, of Mineral TtrLmulugy. Penn sylvania State College, State College. Pa. Whailey, Roger E. (S.i, Box BB. Allred, N. V Wheaton, prank H., Ir., T. C. Wheaton Co., 1113 N. High it., Millville. N. J. Wheaton, L. Don. T. C. Wheator. Co., Miilv.l'e, N. J. Wheaton, T. C., Co. (Frank H. Wheaton Jr.,, 11 IS N. Higit 5t,, Miilville. N. J. Wheeler. D. D.. Titanium Alloy Mfg. Co, 111 Broadway. New York, N. V. Wheeler. Thorne L., Arthur D. Little. Inc.. JO Memorial Dr.. Cambridge 42, Mass. Wheeler, William H.r (Si, R. R. I, Surry, Va. Wheeling Steel Corp. (Ernest B. Snyder), Steubenville South Plant. Steubenville, Ohio Whelan. F. M., Pierreiond Pottery, Box 27, St. Laurent, Que., Canada Whelan, Paul, 76 Waverley Ave., Kenmore 17. N. V. Wherry, Allen P.f (J), 821 E. Fifth St., Alton. 111. Whitacre, Maxwell I_ J13 72nd St.. Niagara Falls. N. V. Whitaker, Fred A.,f 64 Linden Ave.. Metuchen, X. J. Whitaker, H., Rustless Iron Co., Ltd., Trico Works, Keighley, England Whitaker, Irvin (S), Box 2392. Carmel, Calif. Whitaker, Kent A., 367 E. Holmgreeh Rd., San Antonio 10. Texas Whitaker, L. R,t Carolina Ceramics, Inc., R. R. 3, Columbia, 3. C. White. Frank L., 13117 E. Yernor Highway, Apt. 11, Grosse Ponte Park 30. Mich. White. George D. (J), 319 E. Jones St.. Apt. 3. Raleigh, N. C. White, Harold E,,* R. R. 6. "Windy Knoll." Butler, Pa. White, J. F., 938 Northampton Dr.. Silver Spring, Md. White Jonathan S., 1302 Singer Place. Wiikinsburg, Pitts burgh 21, Pa. White. Theodore G., 19 Scenery Rd, Pittsburgh 21, Pa. Whitehead, Merlin H., Canton Stamping & Enameling Co., Canton 5. Ohio Whitesell. Lysle E.. Wellsville. Mo. Whitfield. Robert E., Charles Taylor Sons Co., Box 38. Annex Sta, Cincinnati 14, Ohio Whitford. Robert F..T 234 Susquehanna Ave.. Curwensville. Pa. Whitford. William G," Midway Studios, University of Chi cago. 6016 Ingleside Ave., Chicago 37, 111. Whitlow, C. M.. Jr. (SI, Box 336. Brownsville. Pa. Whitney, Eugene H,, Gladding, McBean Sc Co.. Renton, Wash. Whitney John B. (S). R. R. 1. State College. Pa. Whitney. R. D. (S'). 7016 Greig St.. Aot. 1. Seat Pleasant. Md. Whittaker. Clyrl.-; M.. 3ox 60. N-.v Castle. Pa. \Vhittaker. G. Ward, 226 E. Fairfield Ave.. New Castle, Pa. Whittaker, Harry.! R. R. 1. Fayetteville, N. Y. Whittemorc, J. \V,*T Virginia Polytechnic Institute. Blacks burg. Va. Whittemorc. O. J., Vincent Clay Products Co.. Box 603. Fort Dodge. Iowa Whittemorc, 0. J., Jr.,? Research Lab.. Norton Co., Worcester 6. Mass. Whittle. Francis F., 67 Cotton Lane. Levittown. N. Y. Wjrks. John S...333 New Lennx Rd.. Pittsfieid. Mass. \\ idemann. R. V., Institut de Ceramique Frangaise. 6 Grande Rue. Sevres. Seine et Oise. France Wighton. Roger J. (SI. Box BB. Alfred. N. Y. Wiker. Richard M, 206 Rand Ave., Painted Post. N. Y. Wjlcox. Herman G.. 800 Ross Ave.. Pittsburgh 21. Pa. Wilcox. James W. Alliance Clav Product Co.. Alliance. Ohio Wilder, David R. (SI. 802 N. Division St.. Creston. Iowa Wilhelm, William J. (SI, 318 Centre St., East Mauch Chunk. Pa. Wilkes, Gordon B,* Massachusetts Institute of Technology, Cambridge 39. Mass. Wilkinson. Jack L, Snring Green. Wis. Wjllems, H. W. V.. 1513 Pacific Ave.. Brackenridge. Pa. Willenbrock. H. Carl, 430 Conshohoken State Rd.. Bala Cvnwyd. Pa. Williammee. G. Darby (S), R. R. 2, Box 32. Beilefonte, Pa. Williams, Alan B,1, 10 Pinehill Apts.. Augusta. Ga. Williams. Arthur E., 1316 Seventh St,, Moundsville. W. Va. Williams. Clyde.* Battelle .Memorial Institute. 305 King Ave, Columbus 1. Ohio Willjams. E. Avery, Jr.. Climax Fire Brick Co.. Climax. Pa. Williams. Francis J, Baroid Sales Div,, National Lead Co.. Citv National Bank Bldg, Houston 2. Texas Wiliams. George F.. 130 Platt St, Painted Post. N. Y. Williams, Harry M.. Jeffers Electronics Co, DuBois, Pa. Williams. John A.. Box 250. Trenton 2. N. I. Williams. J. G. (S). 4218 Seminary Ave, Richmond. Va. 392 Wiikunia. LeKuy L, Jr. (Si, Ingersoll Steel U'.v, Warner Corp, Dept. JO. 100U W. 120th St, Chicag". LI. Williams, Kobert A, Jr, American Encaustic Tiling Co, Inc. Ninth St. & Kenilworth Ave, Lansdaie. Pa. Williams, Robert M. i.S i. Box Vjr. Altred. N. 'i. Williams. Waiter E,T 1319 Myrtle Ave, 2auesvil!c. Oin, Wiilis. James B, IJ 5 5 Croitou Kd.. Baltimore 12, Md. Wiilmore. Tracy A, 307 W. South St, Clinton, til. Willms. Albert E, 476 Parker Ave, Hackensack, N. J. 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 Glas Co, Toledo 1. Ohio Wilson, Charles L, 217 N. Meridian St, Brazil, Ind. Wilson. Donald B, 22 W. 110th Place, Chicago 23. ill. Wilson, George. 131 Edison Ave, New Castle. Pa. Wilson, H. H. (J), 1914 Smallwood Dr, Raleigh, N. C. Wilson, Harry S. (J). 148 Spadina Ave, Ottawa, Canada Wilson. Hewitt.*! 12 \V. Circle Rd, Norris. Tenn. Wiison. J. E, Box 842, Waxahachie, Texas Wilson. Maurice 5, Spring Lake Rd, Wallingford, Com. Wilson, Ray H. (S). Box 6319, Virginia Tech. Sta, Blacks burg, Va. Wilson. Roger E, Box 938. Alfred, N. Y. Winand. William T, 901 McKewin Ave, Baltimore 13. Me Winburn, K. L, Box 1369, Little Rock. Ark. Winburn, Sinclair W, Box 26, Asher Ave. Sta, Little Rod Ark. Winchell. Richard (5). 34 Marvin Lane, University Height: New Brunswick, N. J. Windisch, Robert P, Roseville Pottery, Inc, Zanesville, Oh: Winemiller, William F, Salisbury Gardens. 83-2 Park Ave Worcester 5, Mass. Wingerter, Donald B, Box 334, Zelienople, Pa. Winship, Lee C. (S). 95 Academy St, Salamanca, N. Y. Winship, Wiiliam W, Winship Silica Products Co, Freepor N. Y. Winter, Aniuta. Institut d'Optique Theorique et Apphauei 3. Bid. Pasteur. Paris ( 13*1. France Winters. Wiiliam E. (S), 2370 Bensavia Ave, Pittsburgh I( Pa. Wintbrnn. Robert C, 2012 K St. NAV, Washington 5. D. ( Wisconsin Porcelaia Co. i L. A. Stohi). Sun prairie. Wis. W'ise. L. G, E. I. du Pont de Nemours 4 Co, Chemicai Dept Expt. Sta, Wilmington, Del. Wisely, Harriet R. iS), 12 Arthur St, South River. N. J. Wiseman. Claude F, West Virginia Brick Co, Charitstot W. Va. Wishoski. I. Staniey. Industrial Heating, 1400 Union Tru: 31c?, Pittsburgh 19. Pa. Wisnyi, Leonard G. (Si, 14 Simplex Ave, New orur.swici N. JWiss. J. c.,* 1339 Lincoln Rd, Coiumbus i2, Ohio Wisser. George R, Box 102. Emporium, Pa. Witkowski. Staniey, 60 Harding Ave, Oaklyn, N. J. Witmer. Frank. 612 W. Main St, Woodviile. Ohio Witschey. Ray A, A. P. Green Fire Brick Co, 122 S. Michi gan Ave, Chicago 3. 111. Witzemann. A. W,, 207 Franklin Ave, Kittanning. Pa. Woniferth. Harry C, Box 3//. Schenectady 1. N. Y. Woidenberg, Jay (SI. 121-i-C. PGU. Champaign. Hi. Wolfram. H. G,*T 1445 Summit St, Columbus 3. Ohio Wollard. Lee F, 1104 Chestnut St, Burbank. Caiif. Womeidorpn. R. C, 1012 W. Main St, Urbana. 111. Wood. Kenneth O, 3900 E. California St, Pasadena 10. Cali Wood. Kenneth T, 235 E. Pulteney St, Coming, N. Y. Wood. Lewis C, 3raden Copper Co, Rancagua. Chile Wood. Llewellyn, Jr. (J), 1101/? S. Jefferson St, Milledgeviili Wood. Russell KL (SI. Box 737, Alfred, N. Y. Ga. Woodall. Edward L, Jr, 1862 Idlewood Rd, E. Cleveian 12. Ohio Woodruff. Ernest W,, 910 Custer Ave, Evanston. 111. Woods, William J, Jr, Pennsylvania Pulverizing Co, 230 First National Bank Bldg, Pittsburgh 22. Pa.' Woods. William J, Box 627. Lewistown. Pa. Woodrille Lime Products Co. (J. Robert Cowell. Jr.), 214 Jefferson Ave, Toledo 2. Ohio Woodward. Roger (S), Box J-3. Alfred. N. Y. Woodward. Thomas R, 2553 Oakwood Ave, Zanesville. 0h Woodworth. Read (S), Box 164. Delevan. N. Y. Wooldridge, Morris L. (S), 203 E. Green St- Champaign. H Wooley, Seward E,! 6 Westbury Bldg, 66 E. Cliff St, Some* ville. N. J. Woolling, John L, 6162 N. Meridian St, Indianapolis 20. In Worcester Royal Porcelain Co, Ltd. (Joseph F. Gimson Royal Porcelain Works, Worcester. England Ceramic Bullet! Worcester, W. G.,"r 720 Sask. Crescent E.. Saskatoon. Sask., Canada Work. Lincoln T., 15 N. Crescent. Maplewood. N'. J. Worrell, William W., 397 E. 2J2nd St., Suite B-25, Euclid 23, Oliiu Worthington Pump i: Machiney Corp. (J. C. Lukas i. Ransotne Industrial Mixes Div., Dunellen. N. j. Wortiey, G. W, R. i A. Mam, Ltd., Gothic W orks, Falkirk, Scotland Wright, Edward P..' Box 387. East Liverpool, Ohio Wright, David (J >. 179 Edgar St., Weiland, Ont., Canada Wright, Francis M., Jr.. 208 'Fifth St., Freeport. Pa. Wright, J. E., Messrs. A. G. Hackney & Co., Ltd., Fairtield Pottery, Hanley, Stoke-on-Trent. England Wright, J. W./ 1129 Warren St., Alton, 111. Wu. Chia C. (S), 986 River Road Dorms., Columbus. Ohio Wurtsbaugh. C. G., 11638 Otsego St., N. Hollywood, Calif. Wyatt, DeWitt H., 123 Acton Rd,, Coiumbus 2, Ohio Wyckoff, Lewis B., Electro Metallurgical Co., Niagara Falls, N. Y. Wyckoff, Wilbur R,, 262 Cleveland Ave., Hasbrouck Heights. N. J- Wygant, James F., Standard Oil Co. (Indiana), Engineering Research Dept., 910 S. Michigan Ave., Chicago, 111. Wvsong, Charles F, Georgia Institute oi Technology, Atlanta, Ga. Wysor; D. C., General Chemical Co., -10 Rector St., New York 6. N. Y. Y Yaniaguchi. Mitsuo (Si, 72 Oakwood Ave., Arlington, N. J. Yamasaki. Kazuo, Nagoya University, Chikusa, Nagoya, Japan Yao Hua Glass Co, Ltd. (H. C. Chang), 19 Ta Tung Rd,, Tientsin, China Yarte, Andrew A, Apartado -186, Monterrey. N. L,, Mexico Yavorsky. Paul J.. 110 Verbena Rd, Oak Ridge. Tenn. Yerrick, William B. <Si, 111 Second Ave.. Burnham, Pa. Ying, Chih W. (S),, Research Dept., Kailan Mining Admin istration. Tangshan, Hopei, China Yoshiki. Bumpei. Asahi Glass Co.. No. 1 Bciiten-cho Tsuru mi-Kii. Yokohama. Japan Young, Hugh C.r (Si, Bandy. Va. Young, James, John (j. Stein & Co.. Ltd., Manuel Works, Linlithgow, Scotland Young. John C. (SI. 4 Vichy Rd.. Rolla. Mo. Young, John C, 2299 E. Ocean Blvd, Apt. 10. Long Beach. Calif. Your.g, .Robert J, Chicago Hardware Foundry Co, North Chicago. t!l. Young, Robert W,, R. R. I, Box 1367, Highlands Viilage, Las Vegas. N. M. Young, Stanley H,T Cleveland Quarries Co, Amherst, Ohio Young, Vincent M, Bausch Sc Lomb Optical Co, Rochester 4. N. Y. Young. Willard G,r W. A. Case & Son Mfg. Co.. Robinson. III. Young. W. O,' 1125 Gardner Blvd.. Barberton, Ohio Youngblood. Charles J, Jr, Mississippi Glass Co, 38 Angelica St, St. Louis 7, Mo. Youn:. Richard V, Knox. Pa. Yuriev, Marvin G, Fostoria Glass Co, Muur.dsville, W. Va. Z Zabawsky, Zeno. 2749 J-ititz pike. Neifsville. Pa. Zahn. Wiiliam A, 10 '-'nurch St, Matawan, N. j. Zahniser, George B,, 109 Englewood Ave, New Castle, Pa. Zanowiak, Peter P, 1107 N. W. Third Ave, Mineral Weils, Texas Zapte, Rich.ard C, 162 Penfield St.. Pomona. Calif. ZaplFe, Carl A, 6410 Murray Hill Rd, Baltimore 12, Md. Zarbo, George, 2638 Latonia Blvd, Toledo 6, Ohio Zavislak, Lewis, 1334 S. Highland Ave, Los Angeles 35, Calif. Zawistowski, Arthur V. (S), Box 6391, Virginia Tech. Sta, Blacksburg, Va. Zehm. Robert C, Joseph Dixon Crucible Co, Jersey City 3, N. J. Zeiller, Irwin F, B. F. Drakenfeid & Co, Inc, 45-47 Park Place. New York 7, N. Y. Zelezdrnv, Vitkovicke, Narodni Podnik, Ostrava 10, Czecho slovakia Zertoss, Samuel, Crystal Section, Naval Research Lab, Wash ington 20, D. C. Ziegler, Byron J, American Optical Co, Southbridge. Mass. Zillgitt. Helen Hand, 5318 Killcrest Dr, Los Angeles 43. Calif. Zimar, Frank. Corning Glass Works, Corning, N. Y. Zimmer, David C,* 713 Main St, Sistersville. W. Va. Zimmer, Warren A, Research & Technical Div, Joseph Dixon Crucible Co, Jersey City, N. J. Zimmerman. Wiiliam F. (Si, University of Illinois, 204 Ceramics Bldg, Urbana, 111. Zink. George H, A. O. Smith Corp, 3535 N. 27th, Milwaukee, Wis. Zink. Harold F, Owens-Illinois Glass Co, 1700 N. Westwood Ave, Toledo 1. Ohio Zinszer, Wiiliam K, R. R. 2. Box 578, Stockton, Calif. Zneimer. Joel E. (Si. Alfred University, Box 1-9, Alfred, N. Y. Zorzi. Eugene R,, 1329 Poplar St, S. Greensburg, Pa. Zumwalt, Donald A. (Si, Emden. III. Zupan. Milan J. (S). 300 Olive St.. Rolla. Mo. Zvanut. Albert J.T <]). Lincoln Electric Co, 12S08 Coit Rd,. Cleveland. Ohio Zvanut. rrar.k jFerr j Enamel Corp, 4150 E. 55th St, Cleve land 5. Ohio Zweig. Benson ( J), 5040 First St, NAV, Apt. 104, Washington II, D. C. Zwermann. Carl H,** 806 W. Main St, Robinson. III. Zwetsch. Artur, Villeroy Si Boch, Mettlach/Saar, Germany Addenda Chase, Harry K, 4040 Lakeshore Ave, Oakland, Calif. Dorr, Arthur L. (Si. Box 716, Alfred N. Y. Ehle. Jay C. 251 Buckingham Rd, Rocky River 16. Ohio Knapp. Robert C. (Si. 13 Preston Ave, Homell. N. Y. Nelson. William Irving (S), Box 716. Alfred University, Alfred: N. Y. Schultz. John (Si, 905_W. Illinois St, Urbana, 111. Shimada. Hachiro, 2867 I-chome. Sanno Ota-ku. Tokyo. Japan Shimada^ Kuro. Shimada Glass K. K, 47 Shimo-3-chome. Ebie. Fukushima-ku. Osaka. Japan Webb. Bradley (Si, 3ox 186. Alfred. N. Y. 1 Pol. 29, No. 10 (1950) 393