AMERICAN HARD RUBBER CO.—An electrically driven hard rubber centrifugal pump, pumping through a hard rubber pipe into hard rubber tanks. The only material which comes in contact with the liquid is hard rubber. Small reciprocating pumps and other articles will illustrate the various uses to which hard rubber can be put. In charge of exhibit: A. M. Ackerman and E. D. Madden.

AMERICAN KRON SCALE CO.-One of the standard portable scales of the type adopted by the American Railway Express Co. will be exhibited to demonstrate claims as to durability and strength. In charge of exhibit: Carl F. Larson and John M. Bjornson.

AMERICAN LA FRANCE FIRE ENGINE Co.

AMERICAN METAL PRODUCTS Co. "Ampco" metal, both castings and sheet, including valves, calorimeter bombs, runners, liners, etc. designed to resist the corrosive action of all commercial acids. In charge of exhibit: H. C. Brelie, Miss E. T. Smith, R. W. Alger and C. J. Zaiser.

AMERICAN METER Co.-A No. 302 calorimeter set, new type of cubic foot standard as described in technologic paper No. 114 of Bureau of Standards, a-cu.ft. bottle, set of gages, specific gravity apparatus, service cleaner, and various types of test meters. In charge of exhibit: H. D. Harper and J. G. Barrett.

AMERICAN ROLLING MILL CO.
AMERICAN TRANSMARINE CO.
AMERICAN WATER SOFTENER CO.

ANACONDA COPPER MINING Co.-(See Raritan Copper Works).

H. REEVE ANGEL & Co.-Whatman filter papers, including two new products, viz: Strips for arsenic determinations and absorption blocks. Filter papers of American manufacture, including the Alpha No. 190, Lion, Griffin Gray and Climax brands. "Labruco" pure gum rubber tubing, filter mass, glass wool, etc. In charge of exhibit: Byron S. Proper.

ANILINE DYES & CHEMICALS, INC.

ARKELL SAFETY BAG Co.-Linings for shipping packages such as barrels, boxes, drums and bags. The linings will be shown inserted into the different packages ready for In charge of exhibit: P. J. Morales and John B. Jud

use.

son, Jr.

ARMSTRONG CORK Co.-Insulating material for hot and cold surfaces; nonpareil corkboard insulation for refrigerated and constant temperature rooms, nonpareil cork covering for cold pipes and tanks, nonpareil insulating brick for furnaces and other high temperature equipment. The feature will be an electrically heated furnace so arranged as to give a tangible demonstration of the difference in the heat-conducting qualities of nonpareil brick and ordinary brick. In charge of exhibit: S. L. Barnes.

ARNOLD, HOFFMAN & CO., INC.-A joint exhibit with the MATHIESON ALKALI WORKS and the NITROGEN PRODUCTS CO. (q.v.). Finishing and sizing materials for textile and other trades and a line of pigment colors. In charge of exhibit: Adriaan Nagelvoort, Otto A. Fritz and H. D. Winship.

W. O. ARZINGER MACHINERY Co.-A complete working model of the Simplex flotation process on straight and selective flotation. In charge of exhibit: W. O. Arzinger. ATLAS ELECTRIC DEVICES CO.

ATLAS POWDER Co.-Special bottles of chemical products, high explosives, dynamite, blasting supplies and blasting powder. In charge of exhibit: E. E. Rese, E. L. B. Baptiste and H. V. Clark.

THE AUSTIN Co.-Photographs and descriptive matter of some of the chemical plants designed, constructed and equipped by this company. Working models of Austin standard buildings, together with actual sections of the materials entering into their construction. In charge of exhibit: C. F. Chard.

BACHMEIER Co., INC.-An exhibit of aniline dyes. In charge of exhibit: J. H. Bachmeier, G. M. Lord and E. J Struck.

BAILEY METER Co.-Various types of Bailey fluid meters for measuring steam, water, gases and chemicals; V-notch Weir meter, 50,000 lb. per hour capacity, in operation; two fluid meters in operation, one with orifice in 4-in. water line, the other with orifice in 6-in. air line. In charge of exhibit: E. G. Bailey and W. E. East.

In

J. T. BAKER CHEMICAL Co.-A line of chemical reagents specifically known as "Baker's analyzed chemicals." charge of exhibit: William P. Fitzgerald.

BAUSCH & LOMB OPTICAL CO.

THE BARRETT Co.-Joint exhibit with National Aniline & Chemical Corporation, General Chemical Co., Semet-Solvay Co., and the Solvay Process Co. The Barrett Co. will contribute a chart showing (by means of samples) the interrelation of about 200 coal-tar products. A newly developed coal-tar resin, paracoumarone (trade name Cumar); Naphthalene; benzols, toluols; phenols, cresols, cresylic acids, etc., will also be shown. In charge of exhibit: H. S. Sidebottom, F. E. Dodge, R. O. Phillips, C. P. Brown, W. W. King, R. P. Dunning, W. B. Rogers and W. E. Lupe.

BEACH-RUSS Co.-Vacuum pumps, pressure blowers, oil pumps, acid pumps, gas boosters, pebble mills, rotary cutters and laboratory mills, featuring high-vacuum pumps guaranteed to exhaust to within 16 in. of barometer. In charge of exhibit: C. A. Beach, H. C. Russ and W. S. Ransom.

CHRISTIAN BECKER, INC.-Chainomatic balances, featuring specific gravity chainomatic balance, which has only recently been placed on the market. With this balance determinations are speedily made and readings are taken directly from the graduated scale, the Vernier reading to the fourth decimal place. Model No. 100 has a range of 0.400 to 2.000. In charge of exhibit: A. T. Millroy, D. Taylor, S. W. Hess and William L. Ferdon.

BECKLEY PERFORATING Co.-Perforated material of various descriptions and electrically welded tanks and specialties. In charge of exhibit: Otis Wright and Allen Price. BEIGHLEE ELECTRIC Co.-(See Cleveland Instrument Co.). BENJAMIN ELECTRIC MFG. Co.

BLACKMER ROTARY PUMP Co.-A special unit for use in chemical plants consisting of a rotary pump mounted on cast iron sub-base and direct-connected to an electric motor, the complete unit being mounted on swivel casters, so that it can be moved from one part of the factory to another, in this way taking the place of several units. The pumps are provided with an automatic feature for taking up wear and removable linings, which can be changed in a few minutes. In charge of exhibit: J. H. Oldham and Arthur J. Schmitt.

BLAIR, CAMPBELL & MCLEAN, INC.-A small size patent centrifugal gas and vapor scrubber so constructed that the inside mechanism can be readily inspected. In charge of exhibit: B. Dunglinson and A. C. Wood.

BOUND BROOK CHEMICAL CO.

BOYER OIL Co.-Samples of the different oils and oil cake meals manufactured by the company. In charge of exhibit: Mr. Carper.

THE BRISTOL Co.-Recording and indicating instruments for pressure, temperature and electricity. In charge of exhibit: H. G. Hall.

THE BROWN INSTRUMENT Co.-A complete line of high and low temperature measuring instruments, including indicating and recording thermometers and pyrometers for use in the chemical industry and for the control of hightemperature processes. Brown resistance thermometer for low temperature work. Indicating and recording pressure gages for air, vacuum, oil, water, draft, etc. Indicating and recording tachometers. In charge of exhibit: R. P. Brown, G. W. Keller, J. W. Lazear, F. C. Mahoney, R. E. Soules, S. W. Thal and Richard Guest.

BROWN PORTABLE CONVEYING MACHINERY CO.-Two of the latest designs: a portable belt conveyor for handling loose materials and a portable tiering machine, the "Handilift." This last machine has three speeds and the brake is quick-acting and foolproof. The belt conveyor will handle any form of loose material and has an ingenious scoop or shovel end which allows the material to be scraped on to the belt. In charge of exhibit: Harwood Frost and Elmer D. Bushnell.

BUFFALO FOUNDRY & MACHINE Co.-Chemical apparatus: Vacuum driers of various types, including a vacuum drum drier in operation; evaporators, featuring a special type rapid circulation evaporator; kettles, autoclaves, caustic pots, nitrators, etc. In charge of exhibit: E. G. Rippel and others.

BUTTERWORTH-JUDSON CORP. Mill dyeings of chrome colors on men's wear and dress goods; also a complete set of raw stock dyeings. In charge of exhibit: W. H. Clark and Edward A. MacKinnon.

CANADA CARBIDE Co.-Samples of carbide, showing the various sizes in which it is manufactured for domestic and foreign trade. In charge of exhibit: H. E. Mussett.

CANADIAN ELECTRODE Co.-Special features will be a 17-in. round amorphous carbon electrode and a 16 by 16 in. square amorphous carbon electrode, each approximately 51⁄2 ft. long. In charge of exhibit: H. E. Mussett.

CANADIAN ELECTRO PRODUCTS Co., LTD.-Synthetic organic products derived from acetylene, including glacial acetic acid, paraldehyde, aldamine, acetaldehyde, acetic anhydride. In charge of exhibit: V. C. Bartram.

CANADIAN NATIONAL RAILWAYS.

THE CARBORUNDUM Co.-Carborundum refractories, including carbofrax and refrax brick, tile, muffles, tubes; carborundum refractory cement; carbofrax saggers, firesand; silicon metal; carborundum and aloxite wheels, paper and cloth. In charge of exhibit: Otis Hutchins, M. L. Hartmann, S. C. Linbarger and C. E. Hawke.

CARNOTITE REDUCTION Co.

CARRIER ENGINEERING CORP.-A complete operating installation of Carrier humidifying equipment, including the humidifier, fan and motor and automatic control instruments regulating the air delivery. The fan outlet will be provided with a diffuser so that the effects of the humidifier can be observed by noting the condition of the effluent air. In charge of exhibit: E. P. Heckel, H. B. Matzen and J. E. Bolling.

CELITE PRODUCTS Co.-Demonstrations and illustrations showing the use of Sil-O-Cel for heat insulation in various industries and also various applications of Filter-Cel, a material used for filtering various liquids. Typical uses of Celite, a light weight mineral filler, will also be illustrated. In charge of exhibit: P. A. Boeck, Thomas G. Lee, A. W. Knight and others.

CELLULOID ZAPON Co.-Unlimited color range of Zapon air drying enamels will be shown on merchandise as small as beads and as large as furniture. Silverware and highly polished metal will portray the value of Zapon air drying lacquer. Various types of products requiring a dipped or sprayed finish will also be shown. In charge of exhibit: Frank P. Davis, and representative from the New York office.

CENTRAL SCIENTIFIC Co.-DeKhotinsky constant temperature drying ovens, incubators, water baths and thermostats. The Cenco-Nelson high vacuum pump, Cenco hydrogen ion determination apparatus, Cenco electric heater for gasoline distillation, duNouy surface tension apparatus, gas analysis apparatus of various types. In charge of exhibit: S. L. Redman, A. B. Carter, S. R. Evans, E. C. Leamon and others.

CHALLENGE Co.-(See Tower and Wooden Tank Industrial Council).

CHEMICAL CONSTRUCTION CO. Detailed plans of acid plants. Materials used in acidproof masonry construction and a model acid tower built of acidproof brick and cement showing interior construction. In charge of exhibit: T. C. Oliver and R. L. Rutzler.

CHEMICAL EQUIPMENT CO.

CHEMICAL FOUNDATION, INC.

CHICAGO PNEUMATIC TOOL Co.-Simplate valve air compressor, electrically operated; Boyer pneumatic hammers; pneumatic, riveting, chipping, calking and scaling hammers; Little Giant pneumatic and electric drills and grinders; "Hummer" and valveless type rock drills, etc. In charge of exhibit: W. P. Pressinger, H. L. Dean, T. J. Hudson, C. B. Coates and others.

ANTOINE CHIRIS Co.-A comprehensive line of essential oils and synthetic chemical products; exhibit of successive steps in the manufacture of selected products from the raw materials; Capes viscose as applied to various types of packages. In charge of exhibit: G. F. Richmond.

THE CLEVELAND-CLIFFS IRON Co.- Materials obtained from wood by the wood carbonization process, including methyl alcohol, acetone and acetic acid. In charge of exhibit: Charles B. Hall.

THE CLEVELAND INSTRUMENT CO., successor to the BEIGHLEE ELECTRIC COMPANY, INC. - Recording and indicating pyrometer equipment of both resistance and thermo-electric type, the latter using a patented compensating feature which takes care of variations in the cold junction of the thermocouples thus obviating the necessity of expensive lead wires and burying the cold junction. In charge of exhibit: W. H. Chappel.

CLINCHFIELD PRODUCTS CORP.

CONTACT PROCESS CO. - Sulphuric acid, muriatic acid, mixed (nitrating) acid, nitric acid, salt cake, etc. In charge of exhibit: E. R. Henderson, Dr. von Rucker and Truman Smith.

COORS CHEMICAL PORCELAIN CO.

CORNING GLASS WORKS - Glass laboratory apparatus made of pyrex glass. In charge of exhibit: G. Willis Drake, Irving B. Cary, F. F. Pfeiffer and F. Kraissl.

CRANE CO-A complete line of valves and fittings for handling of steam, air, gas and water in chemical plants;

electrical temperature control valve for maintaining constant temperature; working exhibit of Cranetile traps for handling condensation under low and high pressure. In charge of exhibit: Edmund Burke, W. L. Goddard, F. E. McCreary, W. A. Dallach, R. M. Miller and W. F. Lambin. CRANE PACKING Co.-"John Crane" flexible metallic packing in coil and ring form-a packing suitable for steam, air, ammonia, sulphuric acid, and which can be used in the form of gaskets on condensers and evaporators. In charge of exhibit: F. E. Payne, H. W. Lamb, K. M. Bickel. A. DAIGGER & Co.-Standard chemical equipment with special chemicals and equipment developed to meet the recent necessities. In charge of exhibit: Charles Rascher and R. I. Wishnick.

THE J. H. DAY Co.-Special mixing machines for powders, paste and heavy masses; also grinding machinery. In charge of exhibit: C. F. Cone and F. M. Dudley.

THE DELAVAL SEPARATOR Co.-DeLaval oil purifier, varnish clarifier, yeast separator, blood albumen separator, centrifugal filter and gasoline purifier. With each machine there will be an exhibit of the materials handled by the machine showing the different stages from raw material to finished product. In charge of exhibit: H. C. Beckman, H. M. Beach, C. F. Meissner, A. Alexander and others.

THE DENVER ENGINEERING WORKS Co.-Ruth counter current flotation machine and the Richards pulsator jig, with working models in operation. In charge of exhibit: Alfred Tellman and Joseph P. Ruth.

THE DENVER FIRE CLAY Co. A full line of fire clay specialties; new large-size melting crucible; low-pressure fuel oil furnace, oil crushers, samplers, sieves, and a complete set of the Lind interchangeable electroscope. In charge of exhibit: L. W. Hoshour and George W. Lindsay.

DETROIT ELECTRIC FURNACE CO-A 500-lb. Detroit electric furnace for non-ferrous metals. In charge of exhibit: E. L. Crosby, A. E. Rhoads, H. M. St. John, M. G. Carhart and George B. Cross.

THE DETROIT RANGE BOILER & STEEL BARREL Co.-A complete line of Detroit drums and Perfect metal bilge barrels, the latter being in two styles, a tight package for shipment of liquids of a volatile nature and a package with a removable head which is designed for shipment of solids or semi-solids. In charge of exhibit: E. W. Sanborn and A. L. Lindeblad.

J. P. DEVINE Co.-Chemical apparatus such as chemical kettles, autoclaves, carbonators, small vacuum drying chambers (which will serve to illustrate the features of the large vacuum driers), motor-driven vacuum pumps. THE KEK MANUFACTURING Co., a subsidiary, will exhibit the Kek grinding and pulverizing mill in two sizes. In charge of exhibit: J. P. Devine, C. P. Devine and George Galloway. DIAMOND STATE FIBRE CO.-A general line of fiber sheets, rods and tubes, together with special parts such as gears, gaskets, combs, etc. Protective paper: greaseproof, vegeIn table parchment, parchmoid, glassine and filter paper. charge of exhibit: Theodore Herkert and B. M. Lewis.

DINGS MAGNETIC SEPARATOR CO.-Several types of magnetic separators; Type "M" No. 1 unit, magnetic pulley type separator, standard Wetherill high intensity unit. The two former are used for extracting strongly magnetic material from chemical products, and the Wetherill machine is applied very successfully to the concentration of minerals, chemicals, etc. In charge of exhibit: R. A. Manegold, E. S. Hirschberg and G. H. Fobian.

DOMINION WATER POWER BRANCH.

Dorrco

THE DORR Co.-The Dorr tray thickener, the pump and Dorr bowl classifier will be shown in closed circuit operation on a semi-commercial scale demonstrating their application in a typcial problem of separating and dewatering two products of different physical character. Samples of materials handled with or produced by Dorr equipment will also be shown. In charge of exhibit: H. N. Spicer, C. Lee Peck, F. F. Peters, P. M. McHugh, E. R. Ramsay and G. W. Repetti.

THE DOW CHEMICAL CO. Samples of the 86 products manufactured by the company will be shown, duplicate samples being provided with loose stoppers for convenience in closer examination. Two new products will be shown, phenyl-ethyl-alcohol and di-phenyl-oxide. The oxychloride cement floor will be demonstrated in one corner of the booth and by means of an abrasive machine the wearing qualities of this type of flooring will be compared with those of the ordinary concrete floor. In charge of exhibit: D. A. Newland and R. K. Snow.

P. W. DRACKETT & SONS Co. DRAPER MFG. CO.

DRYING SYSTEMS, INC. DUNCK TANK WORKS. Industrial Council).

(See Tower and Wooden Tank DURIRION CA TINGS Co.-Acidproof equipment, including pumps, fans, ejectors and pulsometers, improved type condensers, concentrators for sulphuric and other acids, mixing kettles, denitrator towers and a full line of standard Duriron pipe and fittings. In charge of exhibit: Pierce D. Schenck, Joseph Dart, Jr., R. F. Schmidt, G. A. Cocup, J. W. Swaren, E. A. Suverkrop and R. H. B. Elkins.

EAGLE TANK Co.-(See Tower and Wooden Tank Industrial Council).

EASTMAN KODAK Co.-Research organic chemicals for university laboratories. In charge of exhibit: I. N. Hultman, Miss Anne W. Davis and Miss Ethel Schram. ECONOMIC MACHINERY CO.

ECONOMY ENGINEERING CO. EDGAR BROs Co.

THE EGYPTIAN LACQUER MFG. Co.-A comprehensive and varied line of finished articles showing application of lacquers, thinners, enamels and similar products. In charge of exhibit: G. W. Griffiths, Nathan P. Hunter Simeon Smith and G. J. Henry.

EIMER & AMEND A general line of laboratory apparatus with several new laboratory specialties as well as improved types of standard apparatus. In charge of exhibit: C. G. Amend, W. R. Eimer, T. M. Saulters, L. E. Fluger and F. C. Eibell.

THE ELECTRIC FURNACE Co. Baily electric furnace of standard type melting copper together with specimens of the wide range of products that are being melted in American foundries in this furnace. In charge of exhibit: T. F. Baily, R. F. Benzinger and F. J. Peterson.

ELECTRO BLEACHING Gas Co.-Chlorine control apparatus, containers for transporting chlorine gas, and samples of textile fabrics bleached and finished by the use of liquid chlorine. THE NIAGARA ALKALI Co. will have an exhibit in the same booth consisting of small samples of various alkali products, including caustic soda and potash.

ELECTROLYTIC ENGINEERING CO.

ELECTRON CHEMICAL Co.-A model size of the 12/1500 amp. Allen-Moore cell, together with the latest addition to the Allen-Moore cell family; namely, the 50-amp. size. In charge of exhibit: Mr. Kent, R. Fox and H. D. Marsh.

G. H. ELMORE Acidproof centrifugal pumps. These pumps are made of two distinct types for non-corrosive metallic alloys; the first recommended for use with acids such as acetic, formic, hydrofluoric, sulphuric, etc., and the second for nitric, hydrochloric, chromic and mixed acids, ammonium hydroxide, etc. In charge of exhibit: G. H. Elmore and A. C. Wood.

THE ELYRIA ENAMELED PRODUCTS Co.-Three new pieces of apparatus which have been developed recently: A 48-in. complete still, 250 gal. capacity; an 18-in. still, 10 gal. capacity, and a 100-gal. evaporating dish which is 60 in. in diameter and 24 in. deep. In charge of exhibit: J. E. Simpson, D. M. Webster, Fred B. Morris, W. E. Gray, E. P. Poste, R. F. Goerke and Max Donaver.

CHARLES ENGELHARD Chatelier - Engelhard Le rometers, platinum electric resistance thermometers, electric resistance type furnaces, transparent quartz glass, Impervite refractories and porcelains. In charge of exhibit: E. S. Newcomb.

EVERLASTING VALVE Co.-Everlasting valve and Wilson cup valve. The effect of dilute sulphuric acid on various metals will be demonstrated in order to make a comparison with Aterite, a metal which is being used to make valves for certain acid work. In charge of exhibit: E. N. Corning and Ernest G. Jarvis.

into which they enter. A complete line of zirconia products with electric furnace to demonstrate the super-refractory qualities of Zirkite and Zirkonalba. In charge of exhibit: W. M. Foote, H. C. Meyer and W. A. Koenig.

THE FORESTS PRODUCTS LABORATORY, U. S. Department of Agriculture-Testing, preparation and application of various glues, particularly those used in aircraft manufacture. THE FOXBORO Co., INC.-A new liquid level recorder with a special water seal, making it possible to use this instrument on oils and other liquids lighter than water which would naturally attack a rubber diaphragm. A new Foxboro-Heath CO2 recorder and an automatic temperature controller will be in operation. In charge of exhibit: A. F. Mundy, F. W. Carret, Mr. Neely and Mr. Roessner. FUEL PRODUCTS CO.

FULLER-LEHIGH CO.

WILLIAM GAERTNER & Co Instruments of precision: Cathetometer, comparator, spectroscope, spectrometer, gas and fuel calorimeters. Universal laboratory supports, laboratory telescopes and microscopes. In charge of exhibit: William Gaertner and C. D. Miller.

WM. GARRIGUE & CO.

CHAS. F. GARRIGUES Co. - Various grades of potash from first sorts to persulphate, caustic potash sticks of the U. S. P. pure white and alcohol purified grades; caustic soda sticks; benzoate of soda and benzoic acid, U. S. P. white odorless and tasteless; stearates of zinc and aluminum, etc. In charge of exhibit: H. D. Wellman, Mr. Campbell and Mr. Anderson.

GARY CHEMICAL CO., INC.-Ortho- and para-nitrotoluol. Ortho- and para-toluidine. In charge of exhibit: V. U. Young and Roger N. Holcomb.

GENERAL AMERICAN TANK CAR CORPORATION-Photographs and drawings of tank cars. In charge of exhibit: Hugh Epstein, Ralph Epstein and Joseph Epstein.

GENERAL BAKELITE Co.-A full line of Bakelite applications, including Bakelite varnish, lacquer, enamel, cement, transparent and colored material, molded parts, sheets, rods and tubes. A small Bakelite molding press will be in operation to show the fabrication of the material from the raw state to the finished article. In charge of exhibit: Hylton Swan, Herbert S. May, William S. Gordon, Jr., and L. M. Rossi.

GENERAL CERAMICS Co.-Small models (averaging about 10 in. in height) of practically all of the acidproof stoneware containers, machines, etc., manufactured by this company. These models are exact reproductions of standard apparatus so that visitors will have an opportunity to inspect a complete line of acidproof stoneware. In charge of exhibit: Percy C. Kingsbury.

GENERAL CHEMICAL Co.-Standard acids and chemicals, also Ryzon baking powder and Orchard Brand insecticides and fungicides. A number of products manufactured by customers of the company will be shown, such as tin plate, glues, dyes, explosives, fertilizers, artificial leather, celluloid, pharmaceuticals, etc. In charge of exhibits: N. Peterkin and George P. Adamson.

GENERAL ELECTRIC CO.-A model of the Cottrell precipitation outfit used by the Gellert Engineering Co. for recovering potash from blast-furnace gases will be shown in operation. A KT-312-6-15-hp., 1200-r.p.m., 440-v. motor with frame and coils completely coated with an acid-resisting insulation, which is particularly adapted for use in chemical and fertilizer plants. A RC-24, 2-hp., 1150-r.p.m., 230-v. totally enclosed DS-2 shunt wound motor equipped with new Arguto plug bearings. In charge of exhibit: Chester T. McLoughlin, Raymond Barclay and other representatives.

GENERAL FILTRATION CO., INC.-Acidproof Filtros filter plates in various sizes, shapes and grades; electrofiltros acidproof diaphragms for electrolytic work; acidproof cement. In charge of exhibit: F. E. Leiby and W. W. Robacher.

GENERAL FIRE EXTINGUISHER CO. The Grinnell automatic sprinkler will be installed in a large wire-glass house in which a fire will be started once every hour to show the automatic action of the sprinkler system in extinguishing a fire. The working principle of the sprinkler head will be demonstrated by a large working model 3 ft. high. In charge of exhibit: Frank V. Sackett, Howard E. Branch, Theodore Fertig, John G. Thomas, A. E. Gauslin, H. D. MacDonald, H. H. Duley, H. O. Booth, S. Dorais and J. F. Gilmore.

GLAMORGAN PIPE & FOUNDRY CO-Models of continuous gas-fired limekiln and causticizing tower. Improved rotary continuous suction filter in operation. Caustic flaker in operation. In charge of exhibit: W. D. Mount and C. H. Himnant.

GLENS FALLS MACHINE WORKS - Pulp and paper machinery, including Glens Falls rotary sulphur burner, Woods thickener machine for guncotton and chemical pulp, and the new split-cam for quick repair work on screens. In charge of exhibit: James H. Haines and others.

GORDON DRYER CORP.-"AA" size Gordon high-efficiency atmospheric drier. This size has grown very popular among colleges and research laboratories, as it is an ideal type of unit for small batch production. There will also be on exhibition a "D" drier, this unit containing 500 sq.ft. of effective drying surface. Both outfits will be complete so that drying tests can be made for any interested customer. In charge of exhibit: Nathan Owitz, R. R. James, H. D. Harvey and Richard B. Hewitt..

GOULDS Mfg. Co.

GROCH CENTRIFUGAL FLOTATION, LTD.-A new model flotation machine in which the impeller acts as a centrifugal pumps, sucking air and oil through a hollow shaft. On striking the impeller blades the oil is broken up into small bubbles and thoroughly mixed with the solution, giving ideal flotation conditions. In charge of exhibit: Frank Groch, N. C. Groch and T. Garster.

GRUENDLER PATENT CRUSHER & PULVERIZER CO.

THE GUERNSEY EARTHENWARE Co.-Chemical laboratory porcelain: Crucibles, filter plates, casseroles, combustion capsules, evaporating dishes, beakers, concentric rings, filter rings, dye pots, funnels, desiccator plates, combustion tubes, porous cells, etc. In charge of exhibit: Allan L. Goulding. HAMILTON & HANSELL, INC.-A 500-lb. Rennerfelt furnace of the type which has been widely used in steel mak ing and in the melting of ferrous and non-ferrous alloys. In charge of exhibit: H. A. DeFries and Thomas Hagelthorn.

HANOVIA CHEMICAL & MANUFACTURING Co.-Laboratory apparatus of pure transparent quartz glass featuring very fine quartz fibers for instrument suspension and special vacuum discharge tubes for rare gases. Platinum wound electric laboratory furnaces. Direct reading electric resistance thermometers for central station industrial temperature control. Quartz mercury vapor lamps for research work with ultra-violet rays. In charge of exhibit: E. W. Fisher.

HARDINGE CONICAL MILL Co. An exact model of the Hardinge conical ball mill will be in operation. Large users of the Hardinge mill will be featured by name and photographs of their installations will be shown. In charge of exhibit: Captain Harlowe Hardinge.

HAUSER-STANDER TANK Co.-See Tower and Wooden Tank

Industrial Council).

HAYNES STELLITE CO.

FRANK HEMINGWAY, INC.

S. S. HEPWORTH Co.-Centrifugals of all types in operation including a large electrically driven two-speed centrifugal capable of handling five tons of material per hour; water-driven centrifugal; Macintosh ball-bearing centrifugal and an under-driven machine, suitable for products in small quantities or where there are fumes requiring the top to be sealed. Hand-operated and power-driven unloaders. In charge of exhibit: Bruno C. Lechler, C. A. Olcott and E. F. Babbitt.

HERCULES ENGINEERING CORP.-A nitrator and an autoclave, having certain distinctive features which should be of interest to operators whose work requires equipment of this sort. Interesting information on Hercules evaporators, concentrators and equipment for the generation, compression and liquefaction of gases. In charge of exhibit: R. D. Kehoe, A. R. Calvo, W. H. Campbell, T. J. Brewster and Richard Neuhaus.

HERCULES POWER Co.-A complete line of organic chemicals including organic acids, valerates, pyroxylin solutions, waterproof cements, soluble cotton and solvents. The special features will be sodium alginate (Algin No. 3). which is being used as a sizing material for split leather, leather cloth and other fabrics. In charge of exhibit: G. C. O'Brien and W. L. Holter.

HEROLD CHINA & POTTERY CO.
J. D. HOLLINGSHEAD Co.
HOOD, B. MIFFLIN, BRICK Co.
HOOKER ELECTROCHEMICAL CO.

HOSKINS MANUFACTURING Co.-Laboratory electric furnaces, hot plates and thermo-electric pyrometers of the indicating and recording types, featuring a new multiple recording pyrometer, which will be in operation. In charge of exhibit: C. F. Busse, W. D. Little and C. S. Kinnison. HUFF ELECTROSTATIC SEPARATOR CO.-A half-size electrostatic separator operating with samples of various minerals, showing separation of copper and tin from tungsten, ilmen

ite from sand, rutile from zircon, lead from barytes, etc. Plumb pneumatic jig, laboratory size, which is a dry process and for that reason is particularly adapted to the concentration of ores where water is scarce. In charge of exhibit: H. B. Johnson, F. R. Johnson, C. D. Burrage, Jr., and William E. McKee.

THE HUNTER DRY KILN Co.-Models of automatically controlled humidity driers as well as samples of various materials dried by this system. In charge of exhibit: Harry Hunter, O. M. Ragsdale and Arthur B. Stonex.

HYCO FUEL PRODUCTS CORP.

IDEAL STENCIL MACHINE Co.-Stencil machines for cutting paper stencils for marking shipments, stencil filing cabinets, stencil ink and other shipping-room supplies and equipment. In charge of exhibit: G. E. Berglund and J. W. Marsh..

INDUSTRIAL ELECTRIC FURNACE CO.

INDUSTRIAL FILTRATION CORPORATION—Open tank type of filter, rotary hopper dewaterer and the continuous rotary filter. In charge of exhibit: G. D. Dickey and H. B. Faber. INNIS, SPEIDEN & Co.

IRVING IRON WORKS Co.-A platform consisting of different sizes of Irving-Subway recticuline grating, with stairways showing Irving safety steps. In charge of exhibit: W. E. Irving, P. L. Price and F. N. Dodge.

JEWELL POLAR Co.-Steam operated still together with storage tank in operation. Steam, gas and electric laboratory stills. In charge of exhibit: A. C. Jewell, R. E. Henry, J. E. Bloeser and George Hild.

JOHNSON & CARLSON-(See Tower and Wooden Tank Industrial Council.)

KEK MFG. Co.-(See J. P. DEVINE Co.)

KENART SYNTHETIC PRODUCTS Co.-Numerous synthetic perfume and flavor bases, among them several not previously manufactured in this country; several pharmaceutical products; synthetic and vegetable food colors and dyes. In charge of exhibit: S. Wilmer Kendall and Hugh S. Stewart.

KEWAUNEE MFG. CO.-Laboratory fixtures: Chemical case (919); fume hood (933); chemistry desks (895 and 939); dark-room desk (1424); peg board (1434); exhibit case (1460); combustion table (909). In charge of exhibit: F. H. Wiese, R. A. Hanna, William E. Mix, O. T. Louis, F. M. Hassett and R. G. Siple.

MAURICE A. KNIGHT-A full carload of large standard and special pieces of chemical stoneware apparatus, as well as several complicated and small pieces. In charge of exhibit: Maurice A. Knight, Charles Dennison, Percy Sawyer and Samuel J. Baril.

THE KOPPERS Co.-One of the features will be a display of coke and by-products in the proportions produced in the coking of Illinois coal in Koppers ovens, based on official records of the U. S. Bureau of Standards. A new type of by-product coke oven exhibited for the first time. Model of the Koppers by-product coke oven. In charge of exhibit: E. L. Crowe and E. H. Bird.

LAMMERT & MANN Co.-Several sizes and styles of rotary dry vacuum pumps, some of which will be in operation. In charge of exhibit: Donald Rosie, Lawrence Eisenbies and R. F. Lammert.

LEAD LINED IRON PIPE Co.

LEEDS & NORTHRUP Co.-Different forms of apparatussome of which will be shown in operation-for electrically determining the acidity or alkalinity of solutions. Equipments for electrolytic conductivity measurements, and an automatic recorder, which can be applied to recording changes in any process in which such changes are accompanied by changes in electrolytic resistance. Hand-operated and automatic recording potentiometers for temperature measurements of various ranges; a White combination potentiometer for precision thermocouple measurements; an optical pyrometer for accurate determinations of high temperatures, above the range of thermocouples; and other forms of apparatus of interest to chemists. In charge of exhibit: Paul E. Klopsteg, I. Melville Stein, G. W. Tall, Jr., H. Brewer and O. Brewer.

LINDSAY LIGHT Co.

THE LIQUID CARBONIC Co.-A working exhibit demonstrating the methods and apparatus used to adapt CO, to such pressures and temperatures as are required for its use in commercial processes. Complete outfits for large and small users, pressure regulators and tempering coils for CO2, oxygen, acetylene and other gases. In charge of booth: J. H. Pratt, E. D. Hale, W. S. Hopkins and R. D. Crisp. ARTHUR D. LITTLE, INC.-Pictures of the firm's building and laboratories, with pamphlets describing the facilities for solving problems of applied chemistry. In charge of exhibit: H. L. Sherman and Clarence J. West.

MARDEN, ORTH & HASTINGS CORPORATION-Dyes and intermediates manufactured by the Calco Chemical Co. Processed fish oils for the paint and varnish industries. Tanning oils, moellons and extracts. Samples of results obtained by using these various products. In charge of exhibit: Mr. Breuer and Mr. Johnston.

MARIETTA REFINING Co.-Malachite green; from raw products to finished erystals, some of these weighing 42 lb. each. About 150 different articles dyed or colored with malachite green. In charge of exhibit: H. C. Phelan.

THE MATHIESON ALKALI WORKS, INC.-Caustic soda, soda ash, liquid chlorine, bleaching powder and other EagleThistle brand heavy chemicals. Solvents, including tetrachlorethane, ethylene chloride and similar products. charge of exhibit: Adriaan Nagelvoort, Otto A. Fritz and H. D. Winship.

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MEAD & Co.-Mead mills. In charge of exhibit: Paul O. Abbe and staff of Paul O. Abbe, Inc.

MERCK & Co.-Emphasis will be placed on the exhibit of medicinal chemicals, particularly those developed since the outbreak of the war, such as bismuth salts, iodine and iodides, salicylates, salol, synthetic oil of wintergreen, etc. Chemical reagents of a high standard of purity.

THE MERRILL Co.-The Nordstrom lubricated plug valve, which is so constructed that, in case the valve sticks, the plug can be lifted from the seat, insuring proper lubrication of the bearing surfaces. In charge of exhibit: C. C. Broadwater, L. D. Mills and S. J. Nordstrom.

METALS DISINTEGRATING CO., INC.-Lead powder for carbon brushes and storage batteries. Tin powder for coated papers and carbon brush industry. Bronze powders for decorative purposes. Aluminum powder for fire works and calorizing. Copper powders for dye works and sherardizing. In charge of exhibit: S. G. Schatzberg.

MINER, EDGAR Co.

MIDWEST ENGINE CO.

MINE SAFETY APPLIANCES Co.

MOJONNIER BROS. Co.-Mojonnier laboratory specialties: moisture testers, vacuum pumps, viscosimeters, extraction flasks and other laboratory glassware and accessories. In charge of exhibit: T. Mojonnier, J. J. Mojonnier, R. Moon, P. C. Mojonnier and F. D. Courtenay.

MONSANTO CHEMICAL WORKS

J. L. MOTT IRON WORKS-Apparatus with acid-resisting enamel such as laboratory antoclaves (one to 5 gal.), crystallizing pans and a complete distilling unit with vacuum still, condenser and container. In charge of exhibit: J. J. Blackmore and R. J. Shively.

NASH ENGINEERING CO.-Nash Hytor air and gas compressors, Nash Hytor vacuum pumps, and Jennings Hytor vacuum heating pumps, assembled and in actual operation and apart for inspection. In charge of exhibit: Irving C. Jennings, Howard M. Wylie, and G. B. Wright.

NASSAU VALVE & PUMP CORP.-"Chemetal" acid-resisting valves and horizontal centrifugal pumps. In charge of exhibit: E. J. Walsh, Henry A. Born, H. M. Pier and A. T. Haviland.

In

NATIONAL ANILINE & CHEMICAL Co. NATIONAL FILTER CLOTH & WEAVING CO.-Cotton filter cloth, which is specially constructed for filtering purposes, hence more advantageous to use than ordinary duck. charge of exhibit: M. W. Smith and Edward Boffin. NEWARK WIRE CLOTH Co. —A full line of wire cloth, sieves, filter cloths, etc. A high-power microscope will show the construction of patented filter cloth. In charge of exhibit: Alvin Allen Campbell.

NEW JERSEY ZINC CO-Zinc oxides as used in high-grade paints. Slab zinc (spelter) in various grades, including the well-known "Horse Head" brand. Rolled zinc, lithopone, zinc chloride, sulphuric acid, muriatic acid. salt cake. spie

geleisen and zinc dust. In charge of exhibit: F. C. Ryan. NEWPORT CHEMICAL WORKS, INC.-The various steps in the manufacture of dyes from "coal to dyestuff" will be shown. In charge of exhibit: John W. Kopf and Giles Low. NIAGARA ALKALI Co.-(See Electro Bleaching Gas Co.). NIAGARA ELECTRO CHEMICAL CO.

NITROGEN PRODUCTS CO.-Sodium cyanide and other chemicals made by their synthetic process. In charge of exhibit: Adriaan Nagelvoort, H. D. Winship and Otto A. Fritz.

THE NORTHWESTERN CHEMICAL Co.-Synthetic flavors; butyrates, butyl acetate, amyl formate, caproic acid, valeric acid and valerates. In charge of exhibit: Robert L. Wilson and Miss H. M. Allen.

THE NORTON Co.-Alundum and crystolon refractories, laboratory ware and refractory cement, electrically sintered magnesia. Samples of ignition capsules, combustion boats, filtering cones, electric furnace cores, extraction thimbles, pyrometer tubes, and alundum and crystolon for electric furnaces. In charge of exhibit: H. R. Savage. THE S. OBERMAYER CO.

OHIO POTTERY CO.

THE OLIVER CONTINUOUS FILTER CO.-A 3-ft. diameter by 2-ft. face Oliver continuous filter in operation, showing distinctive features of this machine. Drum filters, a continuous and automatic Oliver horizontal filter used in products too coarse and fast settling to be handled on the drum filter. In charge of exhibit: R. G. Walker, H. A. Morrison, Paul R. Sheffer and W. Bohlman.

ONTARIO BUREAU OF MINES-Representative samples of ores and minerals from the various mineral areas in the Province, including Cobalt silver camp, Porcupine, Kirkland Lake and Boston Creek gold areas, Sudbury nickel region, etc. Feldspar, fluorspar, graphite, talc and molybdenite from eastern Ontario. Salt and salt products of the Canadian Salt Co. and soda ash from Brunner Mond Canada, Ltd., will be displayed. In charge of exhibit: W. K. McNeill and W. R. Rogers.

ORGANIC SALT & ACID Co.-Thirty Orsac products, including salicylic acid and its salts and derivatives, ortho, meta and para cresotinic acids, triphenyl phosphate, tricresyl phosphate, benzyl alcohol, benzyl benzoate and benzyl acetate. In charge of exhibit: Karl Kolbe.

PALO CO.-Meker burners and furnaces as manufactured by G. Meker & Cie., Paris; Link automatic water still; Hess-Ives tint photometer, the only instrument that will determine color values of liquids and solids by a numerical expression without involving the personal equation; Durieux filter paper; Palo absorber; Lane Laboratory burners, etc. In charge of exhibit: M. J. Seavy.

PARKS-CRAMER Co.-Parks-Cramer hot oil circulating systems. One 200,000-B.t.u. Merrill process system consisting of absorber setting and coil, motor-driven oil-circulating positive pressure rotary pump, thermostatic control apparatus and all necessary accessories. The system will be connected to a Dopp kettle. Guyton & Comfer jacketed pipe fittings. In charge of exhibit: A. W. Thompson, A. B. McKechnie and C. A. Willard.

PENNSYLVANIA SALT MANUFACTURING Co.-Heavy chemicals in large glass containers.

THE PERMUTIT Co.-A small Zeolite water softener for demonstration purposes, and photographs showing installaΑ tions of various types of water-rectifying apparatus. complete list of Permutit apparatus displayed on cards and literature describing the apparatus. In charge of exhibit: Albert Tate Smith, Benjamin M. Ferguson, Frank S. Dunham, Class Kennicott, C. A. Roberts and H. G. Taylor. PERTH AMBOY CHEMICAL WORKS.

LEONARD PETERSON & CO., INC.-High-grade laboratory furniture to exhibit laboratory glassware and apparatus manufactured by E. H. Sargent & Co. In charge of exhibit: Leonard Peterson, O. L. Lethander and Bernard Wiest.

THE PFAUDLER CO-A 26-gal. utility pot with accessory apparatus; a 6-gal. Milwaukee pot; a 32-gal, Milwaukee pot; a 50-gal. open jacketed tank; a 141-gal. open jacketed evaporating pan; a 500-gal. closed jacketed tank with enameled agitator; a 500-gal. closed tank. All this apparatus lined with Pfaulder acid-resistant glass enamel. In charge of exhibit: R. B. Kilmer, O. I. Chormann, W. E. Foster and H. R. Allen.

THE PHILADELPHIA DRYING MACHINERY CO.-Several working models of "Hurricane" driers for chemicals, clay and porcelain. Also collection of photographs showing installations in representative plants throughout the United States. In charge of exhibit: Walter W. Sibson, C. H. Reumann and H. C. Moore.

PHILADELPHIA QUARTZ Co.-Various grades of manufac