INCANDESCENT GAS LAMP WITH SELF - GENERATED FORCED DRAFT. The Thermopile Which Generates the Current for the Electric Fan. Successful Cultivation of Mexican Pearls Carried On In Lower California. The Lamp Gives a Light of 1300 C. P. and Section Showing the Electric Fan Which Produces Burns 33 Cubic Feet of Gas. the Forced Draft. AN INCANDESCENT GAS LAMP WITH SELF-GENERATED FORCED DRAFT., scientific american, 1908-05-11

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INCANDESCENT GAS LAMP WITH SELF - GENERATED FORCED DRAFT. The Thermopile Which Generates the Current for the Electric Fan. Successful Cultivation of Mexican Pearls Carried On In Lower California. The Lamp Gives a Light of 1300 C. P. and Section Showing the Electric Fan Which Produces Burns 33 Cubic Feet of Gas. the Forced Draft. AN INCANDESCENT GAS LAMP WITH SELF-GENERATED FORCED DRAFT., scientific american, 1908-05-11

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