Catalog of stereopticons, motion picture machines, projection apparatus : manufactured and imported by the McIntosh Stereopticon Company . PRICE, Cooling Tank for Projection Microscope, as illustrated.$ Special Support when used with our lanterns Special stand (same as used for prism support) 75 Extra Glass Discs for tanks, each 20 The cooling tank as illustrated is a seamless brass cylinder with glassends, which are firmly held in place against especially made round soft rub-ber rings by brass bezel rings, which screw into the ends of the construction permits of the gla
Catalog of stereopticons, motion picture machines, projection apparatus : manufactured and imported by the McIntosh Stereopticon Company . PRICE, Cooling Tank for Projection Microscope, as illustrated.$ Special Support when used with our lanterns Special stand (same as used for prism support) 75 Extra Glass Discs for tanks, each 20 The cooling tank as illustrated is a seamless brass cylinder with glassends, which are firmly held in place against especially made round soft rub-ber rings by brass bezel rings, which screw into the ends of the construction permits of the glass ends being easily removed andcleaned when necessary. The tank holds about a quart of water and measures 3 inches between theglass ends. It is polished and nickel plated. A Cooling tank is a necessity when a Projection Microscope is used,the distilled water (alum solution not necessary) with which it is intendedto be filled, absorbing much of the heat of the focused beam of light, les-sening the danger of injury to the specimen under examination. A few drops of formaline will prevent the water from becoming stag-nant. GLASS PRICE $ This Cell, measuring 4 inches in height and 7 inches in length (sizeof a wood mounted slide), will fit into the slide stage of any lantern usingstandard size slides. It can be used dry to hold insects, or filled with watershowing live specimens from river and pond, such as small fish, leeches,water worms, etc., projected on the screen with a regular lantern is very useful in illustrating experiments in physics and chemistry, suclias capillary action, specific gravity of liquids, electrolysis of water, precipi-tation, chemical action, test reaction, bleaching process, and antisepticoperations. The cell is all glass, and is unaffected with acid, alkali or alcohol. 44 ATcINTOSH STEREOPTICON CO., CHICAGO, U. S. A. McINTOSH VERTICAL ATTACHMENT. PRICE, with condensers and ,4-size ,without condensers and ^-size ol
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Keywords: ., bookcentury1900, bookdecade1910, bookidgricatalogof, bookyear1915
