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The American Ceramic Society February 15, 1993 I hereby certify that the attached copies of Bulletin of the American Ceramic Society, Volume 22,1943, are true and accurate copies, which are maintained in the normal course of business at the American Ceramic Society, 735 Ceramic Place, Westerville, Ohio 43081. Christine Schnitzer Product Manager Ceramic Information Center 73b Cetonuc noc.e Westerville. Ohio 43081-8720 614 890 4700 TWX: 7101109409 PLAINTIFF'S EXHIBIT Jj'JJ /;v ^ Jiirnc 22 TABLE OF CONTENTS December 15, 1943 Number 12 KgAMIC ABSTRACTS Section pior Index.................................................. ef Index.................................................. jE BULLETIN Section ^le Htoory 0llson Products, Incorporated. 207 230 .391-03 inability Record vs. Microcharacter Data on Glazed Floor Tile if color prescribe fare busy help jj ^ By Forrest K. Pence.................................................. .................................................................395-96 impfey new njg ^ patrolled Drilling and Blasting in Clay Mines ntical list. By Clyde Augsburger.................................................................................................................. 396-99 Jors and coloring W ,ndex ............ 421 txpenenced assist r,, lc"dr'x- ............ 421 >e fee) certain you ftfioni Index, fetive spirit of our C . , , , ability to deliver #ert,fe" ,ndex' jhj'Guide........................ .............. ' jlerof Paid Corporation Members. .......... 431 ............. 6 .18,22,24,26 .......... 432-34 INDEX TO ACTIVITIES .gfren Society tor Testing Materials, 1944 ship, Enamel Div., biog., photo, pp. Photographs, Blackburn, A. R., p. 409. Powder Blue "meetings, p. 414. 406-407. Blau. H. H., p. 404. Hettinger, E. L.f p. 394. Potty Powders hr C. E.# gift to Society, book and color Jackson, A. C., member, Papers and Pro Hewitt, L. C., p. 403. RJSS Earth Chemical, Sprints, p. 402; president's editorial, gram Comm., Structural Clay Products Hunt, J. F., p. 406. Sodium Bichromate p.899. - *h & Lomb Optical Co., 90th anniversary Div., biog., photo, p. 407. Jackson, A. C., p. 407. Koos, E. K., p. 408. oodium Chromate Sodium Urauate Tin Oxide Titanium Oxide < celebration, p. 416. Root, E. K., member. Comm, on Classifica : dbnm, A. R., member, Comm, on Mem* tion and Nomenclature, White Wares id fcrship, Refractories Div., biog., photo, Div., biog., photo, p. 408. 1*409. Lillie, H. R., p. 406. Remmey, G. B., p. 408. Roehm, V. J., p. 409. Scheier pottery, p. 417, Umber, Burnt Uranium Nitrate Uranium Oxides Whiting Zinc Oxides Zirconium Oxides -%H* H., member. Society Comm, on Pub< locations and Joint Comm, on Illuminate I jog Glasses of The American Ceramic 4 Society and the Illuminating Engineering | Society, biog., photo, pp. 404--405. 4 Ionic Association of New Jersey, annual -a meeting, program, pp. 413-14. auoic schools. University of Illinois, stu^ dent enrollment, Student Branch, reI rarch projects, pp. 414-15. jnons, Glass, letter to members (K. C. Lillie, H. R., chairman. Comm, on Research, Glass Div., biog., photo, pp. 405-406. Littleton, J. T., advanced at Corning Glass Works, p. 402. Local Sections, Baltimore-Washington, Dec. Meeting, p. 419. Central Ohio, Dec. Meeting, p. 419. Chicago, joint meeting with Chicago Dis .trict Enamelers Club, program, pp. 411- 12 Pittsburgh, silver anniversary meeting, program, officers for 1944, p. 412. Twells, Robert, p. 410. Whitcmarsh Hall, Pennsylvania Salt Mfg. Co. research laboratory, p- 415. Proposed American Standard Basis for Co ordination of Dimensions of Building Materials and Equipment--A62.1, Ameri can Standards Assn., pp. 417-18. Remmey, G. B.,, chairman, Comm, on Mem bership, Refractories Div., biog., photo, p. 408. Roehm, V. J., chairman, Papers and Program y Lyon), annual meeting, p. 411. Ikfractories, nominations for officers, 1944, Printer's Flannel % p. 412. Printing Tissues Rotospray Sifters Soap, Soft Speers* Council for Professional Develop3 me&t, new officers, p. 414. Spraying and Banding Media, Members, membership workers' record, p* 401; new, p. 401; paid membership and subscription record, p. 400; roster changes, pp. 401-402; service roster, p. 401. Comm., Materials and Equipment Div., biog., photo, p. 409. Scheier, Mary and Edwin, photo of pottery, p. 417. % H. G., appointed director, Research National Roster of Scientific and Specialized r Institute, Univ. of Wyoming, p. 407. glass plant meeting, topics discussed, p. 419. longer, E. L., pioneer in colored glass de- Personnel, description of ceramic engi neer, pp. 412--13. New York Journal of Commerce, booklet, "Postwar Planning Now," p. 416. Taylor, W. C., advanced at Corning Glass Works, p. 402. Tefft, C.J?., heads Claycraft Co., p. 402. Twells, Robert, chairman, Nominating . velopment, biog., photo, pp.`394-95. Nitt, L. C., advanced at Laclede-Christy < Clay Products Co., biog., photo, p. 403; Owen6-Coming Fiberglas Corp., new labora tory center, pp. 415-16. Comm., Institute of Ceramic Engineers, biog., photo, pp. 409-11. { iiistory of Laclede-Christy Clay Products 10 Co., pp. 403-404. Pacific Coast Borax Co., awarded Army-Navy Western Society of Engineers, recognizes * jaunel, 0.f golf trophy winners, p. 412. "B," p. 417. ceramics, p. 414. iblon, Amory, in London, pp. 402--403. Pennsylvania Salt Mfg. Co., new research Westinghouse Electric & Mfg. Co., peacetime i J. r,, chairman. Comm, on Member- laboratory, photo, p. 415. conversion plans, pp. 416-17. Publication Office: 20th & Northampton Sts., Easton, Pa. Editorial, Executive, and Advertising Offices: 2525 N. High St., Columbus 2, Ohio. Committee on Publications: J. D. Sullivan, Chairman: H. H. Blau, R. L. Stonb, J. J. Canribld, Harry Thibmbckb, R. C. Purdy. Entered as second-class matter at the post office at Easton, Pa., under the act of March 3, 1879. Subscription $1.50 a year. Single copies twenty-five cents. {Foreign and Canadian postage, S0i additional on subscriptions) (Copyright 1943, American Ceramic Society, Inc.) Published monthly. 432 The Bulletin (1948)--Footnote Citations Horton, C. L., Jr., apparatus for measuring thermal conductivity of refractories, (6) 188. Norton, F. H., ceramic body specially de signed for the sculptor, (3) 67. Plummer, H. C., and Wanner, . F., modular size of day-products units, (9) 305. Rice, T. D., Nickerson, D.t O'Neal, A. M., and Thorp, J., preliminary color stand ards and color names for soils, (9) 308. Robertson, C., color standards for opaque ceramic materials, (9) 306. Scholz, R, P., and Mountjoy, P. S., Fiberglas suture material, (3) 63. Schurecht, H. G., salt glazing, (2) 46. Schurecht, H. G., and Wood, K. T., use of borax and boric acid with salt glazing (2)46. quee*re. r,* w Uisiory ol p-r--, _ Cincinnati, (2) 39. '"'ramie Quim Smith, R. W., machine (or test' c..lr`CCTaTraslo,n' (7) 226. t,0e denti- Stuckey, J. L., talc deposits of M o Swift, R E. characteristics and <7) 228. Pacific Northwest diatomite"d rn?5 o( ' Ul) 370 Thompson, C. L,, and Wilcox rr n temperature gas-fired test NITRATE OF P4JTASH CAUSTIC SODA SOLPHUR Advertise in The Bulletin Number of Insertions J month Full pago $66.00 Half page 36.00 Quarter page 20.00 Eighth page 10.75 3 months $60.00 33.00 18.00 9.90 6 months *52.00 30.00 16.50 9-00 12 month* 044.00 26.00 15.00 ,_2s Classified advertisements: 35 words for $1.10 per insertion Cover positions: list plus 25% First page preceding or following reading matter: list plus 20% J g^jjton Stamping & 1 ; jCj-borundum Comp; jCrnegie-Illinois Ste ' rr-Lowrey Glass C JCiitral Silica Comp; ^ramic Color & Cht ^ramies Publishing jvrtain-teed Produc rtjampion Spark Plu, rtiattanooga Glass C rtjjcago Hardware F< rtjicago Pottery Co., Chicago Retort & Fii Chicago Vitreous Em Chisholm, Boyd and . clark, N., & Sons, A i colonial Insulator C< ' commercial Decal P Consolidated Feldsp; ; Co-Operative Ename Coors Porcelain Con ' corfmrt Refractories Corning Glass Work: ; corning Glass Work: Crane Enamelware ( ; cmnin China Co., Id Crooksville China Co Crossley Machine Cr Crossman Company, Crown Potteries Co., pemuth Glass Work Denison Engineering ! penver Sewer Pipe <f : peVilbiss Co., Toled< Diamond Alkali Co., pixon, Joseph, Cruci Douglas, John, Co., t Drakenfeld, B. F., & . Doncan & Miller Gla Do Pont, E. I., de ; Del. STAUFFER CHEMICAL CO. 020 Lexington Avenue. New York, N. Y. 444 LoUc Shore Orivc. Chieogo. Illinois 624 CoWorniu Street, son FronciSvO. Col. 550 South Flower Street. Los Angeles. Cal. Color rates: on application Reading notices not accepted ROSTER OF PAID CORPORATION MEMBERS Abb6 Engineering Co., New York; N. Y. Abingdon Sanitary Mfg. Co., Abingdon, 111. A C Spark Plug Co., Flint, Mich. Adamston Flat Glass Co., Clarksburg, W. Va. Akron Porcelain Co., Akron, Ohio Alabama Clay Products Co., Birmingham, Ala. Alton Brick Co., Alton, 111. American Clay Forming Co., Tiffin, Ohio American Crucible Co., Shelton, Conn. American Emery Wheel Works, Providence, R. I. American Gas Assn., New York, N. Y. American Lava Corp., Chattanooga, Tenn. American Nepheline Corp., Rochester, N. Y. American Porcelain Enamel Co., Muskegon, Mich. American Potash & Chemical Corp., New York, N. Y. American Radiator & Standard Sanitary Corp., Louisville, Ky. American Refractories Institute, St. Louis, Mo. American Rolling Mill Co., Middletown, Ohio American Stove Company, St. Louis, Mo. American Window Glass Co., Pittsburgh, Pa. Amsler-Morton Co., Inc., Pittsburgh, Pa. Anchor Hocking Glass Corp., Lancaster, Ohio Arketex Ceramic Corp., Brazil, Ind. Armstrong Cork Co., Lancaster, Pa. Babcock & Wilcox Co., New York, N. Y. Ball Brothers Co., Muncie, Ind. Baltimore Enamel & Novelty Co., Baltimore, Md. Bardin, Paul, e Hijos, Soc. Anon. Com., Buenos Aires, Argentina, South America Bausch & Lomb Optical Co., Rochester, N. Y. Bay State Abrasive Products Co., Westboro, Mass. Bellaire Enamel Co., Bellaire, Ohio Binghamton Brick Co., Binghamton, N. Y. Blue Ridge Glass Corp., Kingsport, Tenn. Blythe Color Works, Ltd., Stoke-on-Trent, England , Bonnot Company, Canton, Ohio Botfield Refractories Corp., Philadelphia, Pa. Braun Corp., Los Angeles, Calif. Brockway Glass Company, Inc., Brockway, Pa. Buck Glass Company, Baltimore, Md. Buffalo Pottery Co., Inc., Buffalo, N. Y. Butcher, L. H., Co., Los Angeles, Calif. ; Eastern Clay Produc Edgar Plastic Kaolin Electric Auto-Lite C< Electro Refractories Engelhard, Charles, j English China Clays: Erie Resistor Corp., Eureka Flint & Spar . Eiolon Company, Tc Etbrica de Ladriilo; : terrey, N. L., Mex - fairfacts Company, 1 : federal Glass Co., C - federal Seaboard Te ferro Enamel Corp., ferro Enamels (Aust ;erro Engineering C errosmalt, S. A., Mrndlay Clay Produc vote Mineral Co., ] ;ords Porcelain Wot fostoria Glass Co., I\ 'razier-Simplex, Inc tench Saxon China iilper Pottery Co., ' >arco Products, Inc. jsrfield Refractories jsyner Glass Works jeneral Ceramics C' jeneral Color & Che ' General Electric Co . Nela Park, Cievei; Jfneral Refractories Wge, W. S., Pott Vol. 22, No. 12 . 19431 The Bulletin (1948)--Corporation Roster 433 { GuiId of 226r testinK deoti. ,its of N. C,, (7) ,2S rjst.cs and diatomites, (uf 37' Filcox, H G u* tt furna'cN^ yioton Stamping & Enameling Co., Canton, Ohio jjlborundum. Company, Niagara Falls, N. Y. jJjaegie-Illinois Steel Corp., Pittsburgh, Pa. Kjr-Lowrey Glass Co., Baltimore, Md. mitral Silica Company, Zanesville, Ohio Mamie Color & Chemical Mfg. Co., New Brighton, Pa. Mamies Publishing Co., Inc., Newark, N. J. Mtsin-teed Products Corp., Chicago, 111. -.Jjainpion Spark Plug Co., Detroit, Mich. `|jattanooga Glass Co., Chattanooga, Term. Ajcago Hardware Foundry Co., North Chicago, 111. jScago Pottery Co., Chicago, 111. Hjcago Retort & Fire Brick Co., Chicago, 111. jljcago Vitreous Enamel Product Co., Cicero, 111. itisholm, Boyd and White Co., Chicago, 111. jjiik, N., & Sons, Alameda, Calif. Monial Insulator Co., Akron, Ohio tanmercial Decal Products, Inc., East Liverpool, Ohio aasolidated Feldspar Corp., Trenton, N. J. ^Operative Enameling Co., Cleveland, Ohio .^ors Porcelain Company, Golden, Colo. ^fhart Refractories Co., Inc., Louisville, Ky. gating Glass Works, Corning, N. Y. fining Glass Works, Macbeth-Evans Div., Gharleroi, Pa. $&e Enamelware Company, Chattanooga, Tenn. gonin China Co., Minerva, Ohio jooksville China Co., Crooksville, Ohio jossley Machine Co., Trenton, N. J. gossman Company, South Amboy, N. J. gown Potteries Co., Evdnsville, Ind. $muth Glass Works, Inc,; Parkersburg, W. Va. Jenison Engineering Co., Columbus, Ohio Denver Sewer Pipe & Clay Co., Denver, Colo. -fcVilbiss Co., Toledo, Ohio junond Alkali Co., Painesville, Ohio iron, Joseph, Crucible Co., Jersey City, N. J. Baglas, John, Co., Cincinnati, Ohio tikenfeld, B. F., & Co., Inc., New York, N. Y. jmcan & Miller Glass Co., Washington, Pa. J# Pont, E. L, de Nemours & Co., Inc., Wilmington, 5Del. j <stern Clay Products, Inc., Eifort, Ohio jgar Plastic Kaolin Co., Metuchen, N. J. dsctric Auto-Lite Co., Fostoria, Ohio tetro Refractories & Alloys Corp., Buffalo, N. Y. gelhard, Charles, Inc., Newark, N. J. igffsh China Clays Sales Corp., New York, N. Y. de Resistor Corp., Erie, Pa. dreka Flint & Spar Co., Trenton, N. J. aolon Company, Tonawanda, N. Y. 4tnica de Ladrillos Industriales y Refractarios, Mon terrey, N. L,, Mexico . irfacts Company, Inc., Trenton, N. J. , Ohio jderal Glass Co., Columbus, Ohio Ideral Seaboard Terra Cotta Corp., Perth Amboy, N. J. oto Enamel Corp., Cleveland, Ohio sro Enamels (Australia) Pty., Ltd., Alexandria, Australia ato Engineering Co., Cleveland, Ohio xrosmalt, S. A., Montevideo, Uruguay, South America lore, Md. Adlay Clay Products Co., Washington, Pa, n,, Buenos Aires, *te Mineral Co., Philadelphia, Pa. rds Porcelain Works, Perth Amboy, N. J. Si. Y. loro, Mass. etoria Glass Co., Moundsville, W. Va. -otier-Simplex, Inc., Washington, Pa. reach Saxon China Co., Sebring, Ohio Y. iper Pottery Co., Trenton, N. J. nt, England a, Pa. ay. Pa. Vol. 22, No. 12 arco Products, Inc., Butler, Pa. afield Refractories Co., Bolivar, Pa tjaer Glass Works, Salem, N. J. oeral Ceramics Co., Keasbey, N. J. ffleral Color & Chemical Co., Sebring, Ohio eoeral Electric Co., Lamp Dept., Pitney Glass Works, -fela Park, Cleveland, Ohio eoeral Refractories Co., Philadelphia, Pa. wge, W. S., Pottery Co., East Palestine, Ohio A3) Gillinder Brothers, Inc., Port Jervis, N. Y. Gladding, McBean & Co., Lincoln, Placer County, Calif. Glass Container Assn., New York, N. Y. Gleason-Tiebout Glass Co., Maspeth, N. Y Glenboig Union Fireclay Co., Ltd., Glenboig, Lanarkshire, Scotland Globe Brick Co., East Liverpool, Ohio Great Lakes Foundry Sand Co., Detroit, Mich. Great Lakes Steel Corp., Detroit, Mich. Green, A. P., Fire Brick Co., Mexico, Mo. Haeger Potteries, Inc., Dundee, 111. Hall China Company, East Liverpool, Ohio Hampton Grinding Wheel Co., Springfield, Mass. Hancock Brick & Tile Co., Findlay, Ohio Hanley Company, Summerville, Pa. Hanovia Chemical & Mfg. Co., Newark, N. J. Hardinge Company, Inc., York, Pa. Harker Pottery Co., East Liverpool, Ohio Harshaw Chemical Co., Cleveland, Ohio Hartford-Empire Co., Hartford, Conn. . Haws Refractories Company, Johnstown, Pa. Hazel-Atlas Glass Co., Washington, Pa. Hommel, O., Co., Pittsburgh, Pa. Houze, L. J., Convex Glass Co., Point Marion, Pa. Ideal Tooth, Inc., Cambridge, Mass. Illinois Clay Products Co., Joliet, 111. Illinois Water Treatment Co., Rockford, IU. Industrial Ceramic Products, Inc., Columbus, Ohio Ingram-Richardson Mfg. Company of Indiana, Frankfort, Ind. International Clay Machinery Co., Dayton, Ohio International Smelting & Refining Co., Akron, Ohio Ironton Fire Brick Co., Columbia, S. C. Isolantite, Incorporated, Belleville, N. J. Inc., Johns-Manville Sales Corp., New York, N. Y. Jones Metal Products Co., West Lafayette, Ohio Jova Brick Works, Roseton, N. Y. . Kentucky Clay Mining Co., Mayfield, Ky. Kentucky-Tennessee Clay Co., Alliance, Ohio Kimble Glass Co., Vineland, N. J. Knight, Maurice A., Akron, Ohio Knowles, Edwin M., China Co., Newell, W. Va. Kohler Company, Kohler, Wis. Koppers Company, Pittsburgh, Pa. Kraftile Company, Niles, Calif. Laclede-Christy Clay Products Co., St. Louis, Mo. Lancaster Iron Works, Lancaster, Pa. Lapp Insulator Co., Inc., Le Roy, N. Y. Laughlin, Homer, China Co., Newell, W. Va. Lava Crucible Co. of Pittsburgh, Pittsburgh, Pa. Lawrence Clay Co., Jackson, Ohio Lee Clay Products Company, Clearfield, Ky. Libbey Glass Company, Toledo, Ohio Libbey-Owens-Ford Glass Co., Toledo, Ohio Locke Insulator Corp., Baltimore, Md. Louthan Manufacturing Co., East Liverpool, Ohio Lynch, A. J., & Co., Los Angeles, Calif. Mansfield Sanitary Pottery, Inc., Perrysville, Ohio Marshall-Eclipse Div., Bendix Aviation Corp., Troy, N.Y. Maryland Glass Corp., Baltimore, Md. Mathieson Alkali Works, Inc., New York, N. Y. Maxson, Elwyn L., Glendale, Calif. McHose, L. H., Inc., Perth Amboy, N. J. McKee, Arthur G., & Co., Cleveland, Ohio McLain Fire Brick Co., Pittsburgh, Pa. Metal & Thermit Corp., New York, N. Y. Mexico Refractories Co., Mexico, Mo. Mississippi Glass Co., New York, N. Y. Mitchell Clay Mfg. Co., St. Louis, Mo Moore Enameling & Mfg. Co., Wes) Lafayette. Ohio Moore & Munger, New York, N.Y. Morton Pottery Co., Morton, 111. 434 The Bulletin (19/$)--Corporation Roster Mosaic Tile Company, Zanesville, Ohio Mount Clemens Pottery Co., Mount Clemens, Mich. Safety Grinding Wheel & Machine Co., Springfield n, Salem China Co., Salem, Ohio B Q| hio Mullite Refractories Co., Shelton, Conn. Seagram, Joseph E., A Sons, Inc., Louisville, Ky National Engineering Co., Chicago, 111. National Fireproofing Corp., Pittsburgh, Pa. Shenango Pottery Company, New Castle, Pa. Sierra Talc Co., Los Angeles, Calif. Simonds Worden White Co., Dayton, Ohio National Gypsum Co., Luckey, Ohio National Industrial Sand Assn., Washington, D. C. National Lead Co., Brooklyn, N. V. Smith, A. O., Corp., Milwaukee, Wis. Smith & Stone, Ltd., Georgetown, Ontario, Canada Solvay Process Company, Syracuse, N. Y. National lame and Stone Co., Findlay, Ohio National Porcelain Co., Trenton, N. j. Sovereign Potters, Ltd., Hamilton, Ontario. Canad, Spinks, H. C., Clay Co., Newport, Ky. ada National Refractories'Co., Inc., Philadelphia, Pa. Square D Company, Detroit, Mich. National Sales Corp., Cincinnati, Ohio New Castle Refractories Co., New Castle, Pa. New Jersey Porcelain Co., Trenton, N. J. Standard Brick and Tile Corp., Evansville, Ind Star Porcelain Co., Trenton, N. J. Stark Brick Co., Canton, Ohio North American Refractories Co., Cleveland, Ohio Stauffer Chemical Co., New York, N. Y. North Carolina Feldspar Corp., Erwin, Tenn. Steele, J. C., & Sons, Statesville, N. C. Norton Company, Worcester, Mass. Sterling Grinding Wheel Co., Tiffin, Ohio Oak Hill Fire Brick Co., Oak Hill, Ohio Ohio Brass Company, Barberton, Ohio Stockton Fire Brick Co., San Francisco, Calif. Structural Clay.Products Institute, Washington D o Stupakoff CeramicAnd Mfg. Co., Latrobe, Pa. ' ` ' Ohio Clay Co., Cleveland, Ohio Ohio Hydrate & Supply Co., Woodville, Ohio Old Hickory Clay Co., Paducah, Ky. Summitville Face Brick Co., Summitville, Ohio Sur Enamel A Stamping Works, Ltd., Calcutta. India Surface Combustion Corp., Toledo, Ohio Onondaga Pottery Co., Syracuse, N. Y. Swindell Brothers, Baltimore, Md. Orefraction, Inc., Pittsburgh, Pa. Swindell-Dressler Corp., Pittsburgh, Pa. Orton, Edward, Jr., Ceramic Foundation, Columbus, Ohio Sjdvania Electric Products, Inc., Emporium, Pa. Owens-Coming Fiberglas Corp., Newark. Ohio Owens-Illinois Glass Co., Alton, 111. Taylor, Smith & Taylor Co., Chester, W. Va. t^reppiilHinwisPiteifieeoant Co., Oakland, Calif. Texas Mining A Smelting Go., Laredo, Texas Titanium Alloy Mfg. Co., Niagara Falls, N. Y. Pacific Clay Products, Los Angeles, Calif. Trenton Potteries Co., Trenton, N. J. ' Pacific Coast Borax Co., New York, N. Y. Paper Makers Importing Co., Inc., Easton, Pa. Twyfords, Ltd., Cliffe Vale Potteries, Stoke-on-Tr*' England rent*: Pass A Seymour, Inc., Solvay, N. Y. Tyler, W. S., Company, Cleveland, Ohio i Pearson, E. J. A J., Ltd., Stourbridge, England Pemco Corp., Baltimore, Md. Pennsylvania Pulverizing Co., Lewistown, Pa. Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Pettinos, George F., tic., Philadelphia, Fa. Pfaudler Company, Rochester, N. Y. Pittsburgh Plate Glass Co., Creighton, Pa. i Plibrico Jointless Firebrick Co., Chicago, 111. Polaroid Corp., Cambridge, Mass. Union Electrical Porcelain Works, Inc., Trenton. N r United Clay Mines Corp., Trenton, N. J. United Glass Bottle Mfrs., Ltd., London, England United States Gypsum Co., Chicago, 111. Universal Clay Products Co., Sandusky, Ohio Universal Dental Co., Philadelphia, Pa. Universal Potteries, Lie., Cambridge, Ohio Universal Sanitary Mfg. Co., New Castle, Pa. Porcelain Metals Corp. of Louisville, Louisville, Ky. Vanderbilt, R. T., Company, New York, N. Y. Porcelain Products, Lac., Findlay, Ohio Portsmouth Clay Products Co., Portsmouth, Ohio Potters Supply Co., East Liverpool, Ohio Precision (handing Wheel Co., Philadelphia, Pa. Vereeniging Brick A Tile Co., Ltd., Vereeniging, Transvaal, South Africa Vesuvius Crucible Co., Swissvale, Pittsburgh, Pa. Victor Insulators, Inc., Victor, N. Y. Purinton Pottery Co., Shippenville, Pa. Pyro Clay Products Co., Oak Hill, Ohio Vitrefrax Corporation, Los Angeles, Calif. Vitreous Steel Poducts Co., Cleveland, Ohio Vitro Manufacturing Co., Pittsburgh, Pa. Quigley Company, Inc., New York, N. Y. Wallace China Co., Ltd., Huntington Park, Calif Ramtite Co., Chicago, 111. Walsh Walsh, John, Ltd., Birmingham, England Ransome Concrete Machinery Co., Dunellen, N. J. Waltham Grinding Wheel Co., Waltham, Mass. Refractory A Insulation Corp., Port Kennedy, Pa. Washington Porcelain Co., Washington, N. J. Remmey, Richard C., Son Co., Philadelphia. Pa. Watt Pottery Co., Roseville, Ohio Republic Steel Corp., Cleveland, Ohio Wayne Laboratories, Waynesboro, Pa. Riddell, W. A., Co., Bucyrus, Ohio Western Brick Co., Danville, 111. Robeson Process Co., New York, N. Y Western Electric Co., Chicago, 111. Robinson Ventilating Co., Zelienople, Pa. Westinghouse Electric A Mfg. Co., Derry, Pa. Roseville Pottery, Inc., Zanesville, Ohio West Virginia Brick Co., Charleston, W. Va. Ross-Tacony Crucible Co., Philadelphia, Pa. Wheeling Steel Corp., Yorkville, Ohio Royal China, Inc., Sebring, Ohio Willson Products, Inc., Reading, Pa. Rundle Mfg. Co., Milwaukee, Wis. Wisconsin Porcelain Co., Sun Prairie, Wis. Rustless Iron Co., Ltd., Keighley, England Worcester Royal Porcelain Co., Ltd., Worcester, England P l 16 EAST BE Vol. 22, No. H