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Scientific American, Vol. 52, No. 26 (June 1885) (1885)
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ican Meter Co., of the cut. To the back of a gas meter is attached a cyl- reliable than those of the .Bunsen photometer. To indrical case communicating with its interior, and con- this city, the instrument was found wonderfully exact. carry its accuracy a degree farther, an alum or water The bar… … general way to richer gas, would explode at a given THE THEBMOFHOTE, OB S£LF-HEGfISTEBINQ FH0T0M£TEB. the second to poyrer gas. time. © 1885 SCIENTIFIC AMERICAN, INCPatented · Patents · Munn · Machine · Boiler · Scientific American · Water · Professor lodge · Postal order · Sewing machine · American supplement · Electric light · Sash bolt · Address munn · Push button · Porous cell
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