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FORCEPS, Straight—Of polished steel, heavy, with blunt corrugated points. FORCEPS, Curved—Brass, lacquered, medium points. Length, 100 mm. FORCEPS, Curved—Brass, lacquered, with ivory tips. Length, 95 mm. FORCEPS, Steel—With platinum tips. Length, 85 mm. FORCEPS, Steel—Same as above, but with chrome tips. FORCEPS, Straight—Double French form. Steel, nickel plated. One end self-closing and with platinum tips. The other end is self-opening

  LABORATORY FLOTATION MACHINES: These machines are being used throughout the world for floating all kinds of metallic minerals including gold, as well as non-metallics such as graphite, fluorspar, coal, etc. When operating a laboratory flotation cell, the results obtained can be duplicated in practice as these units are designed on the same principle as the commercial machines. These Laboratory Flotation

FIXANAL, Standardized Solution Apparatus—A method of preparing correctly standardized solu­tions for volumetric analysis without titration. The method depends on the use of sealed cap­sules containing the proper amount of accurately standardized reagent to make up 1000 ml. and an apparatus for releasing the contents into a standard 1000 ml. volumetric flask. To prepare a solution, for example, of 0.1 N-sodium

PLATINUM ANODES AND CATHODES For best results, we recommend the use of the anodes and cathodes listed here. The paddle form anode is recommended where considerable agitation is required. The loop anode is made of No. 16 platinum iridium wire insuring the rigidity required for suc­cessful rotation at high speed. When making copper and lead determinations simultaneously, the gauze anode

BRAUN ELECTROLYTIC APPARATUS for making electrolytic determinations of copper, lead, antimony, cadmium, nickel, tin, zinc, and other metals was the pioneer in its field and for twenty years it has maintained its worldwide leadership. Many of the original sets are still in satisfactory operation. The latest, improved design, the Model CB, like its predecessors, is substantially con­structed for maximum efficiency and

DISTILLING APPARATUS, Gas Heated, Barnstead, 1 gallon size—The gas burner is of the type approved by the U. S. Bureau of Standards and the American Gas Association, and is built directly into the still and entirely encased. The gas mixer is of the latest Venturi type and is provided with an adjustable orifice adaptable for all gas conditions. Full provision

DISSECTING SET—Consists of a one-fold, lined leatherette case, containing the following instru­ments: Scalpel  32 mm, edge Needle Forceps Pipette Scissors Celluloid Ruler Needle DISSECTING SET—Consists of a two-fold, lined leatherette case, containing the following instru­ments: Scalpel 45 mm edge Cartilage Knife Scalpel  25 mm edge Hooks and Chains Forceps Blowpipe Scissors Celluloid Ruler Tenaculum FORCEPS, Dissecting—Fine; curved, fine file-cut points. Length, 110

DISH, Evaporating, Porcelain, Coors—With lip. Numbers 000 to 4A, inclusive, glazed inside and outside with exception of rim. Larger sizes glazed inside and partly glazed outside. DISH, Evaporating, Silica—Glazed. Deep form, round bottom, with lip. Superior to porcelain. Very durable. May be heated over direct flame, and will not condense moisture on the surface while cooling. DISH, Clay, Roasting—For roasting ores in metallurgical

DESICCATOR, Scheibler—Of heavy glass, with wide rims. Cover and rims are ground true to insure an accurate tight fit. DESICCATOR, Fruehling and Schultz—Of clear, heavy glass, with ground-on cover and knob. Without porcelain plate. DESICCATOR PLATE, Porcelain-Glazed on one side, without feet. DESICCATOR PLATE, Porcelain-Glazed on one side; supported by three small feet. DESICCATOR PLATE, Porcelain-Glazed on one side. With numerous small

CYLINDER, Hydrometer—With lip, heavy glass. On foot. CYLINDER, Graduated, Exax Blue Line—On foot, with pour out, heavy glass, numbered up and down. Calibrated at 20° C. CYLINDER, Mixing, Exax Blue Line—Graduated and stoppered, on foot, heavy glass, numbered up and down. Calibrated at 20° C. GRADUATE, Glass, Single, English Scale, Exax Blue Line—Mounted on base with foot. The grad­uations are fine but distinct

CRUCIBLE, Porcelain, Coors— High form. Glazed inside and outside, with exception of outside bottom surface. Without covers. CRUCIBLE COVER, Porcelain, Coors- For use with No. 23810 FIRE ASSAY CRUCIBLE, Porcelain, Coors—Low form. Glazed inside and outside, with exception of outside bottom surface. Without covers. FIRE ASSAY CRUCIBLE COVER, Porcelain, Coors- For use with No. 23815 FIRE ASSAY CRUCIBLE, Porcelain, Gooch, Coors—With perforated

Laboratory Condenser Allihn – With sealed-in bulb condensing tube. Length of jacket, shoulder to shoulder, mm. Laboratory Condenser Allihn, Pyrex Glass- With sealed in bulb condensing tube. Laboratory Condenser, Liebig- With loose inner tube. Complete with rubber connections. Length of jacket, shoulder to shoulder, mm. Laboratory Condenser Tube, Pyrex Glass- With enlarged top. For No. 23125. Laboratory Condenser, Liebig- With inner

CONCENTRATING TABLE —For running concentrating tests on a small scale, this Laboratory Concentrating Shaker Table is an indispensable unit. The action of this table duplicates the commer­cial units, and field results can be authentically reproduced. In fact, it is used as a pilot table for continuous operation in many large tonnage plants. BUY A MODERN LABORATORY GOLD SHAKER TABLE A

CLAMP, Burette, Castaloy—Of strong corrosion-resistant Castaloy, with nickel plated brass screws and wing-nut, and bronze spring. The position of the jaws and holder is fixed. With round jaws. Jaw opening, maximum: small size, 1½ inches; large, 2½ inches. CLAMP, Utility, Castaloy—Of strong, corrosion-resistant Castaloy, with screw, wing-nuts, pins and spring of nickel plated brass and bronze. Can be extended 7/8 inch in length and locked

BURNER, Oil, Vesta Braun—Low pres­sure oil burner primarily designed for firing assay furnaces. Any oil from 22 to 24 degrees or lighter may be used, and about one gallon of oil per hour is consumed. The air should be furnished at about 4- ounce pressure and directly con­nected motor-blower outfits are best suited. Or, if desired, a belt-driven blower may be used. Complete with air and oil valves. Air pipe, 2½ inches.

BURNER, Gasoline, Blast, Barthel—Gives a very powerful blast and is adjustable to a light flame. Tank has 1-pint capacity. Burner gives a temperature of about 1400° C. with a blue smokeless flame. Complete with burner, tank and connecting tube. BURNER, Laboratory, Gasoline Blow Torch—Produces an intensely hot blue flame, which can be regulated from a small pointed flame to a brush flame. Tank