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      Knowledge is Power

      Scientific American October 23, 1880

      The Relative Illuminating Value of the Hydrocarbon Vapors and Gaseous Hydrocarbons Present in Coal Gas, and their Quantitative Determination

      • By G. Ernest Stevenson on October 23, 1880

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      More in the October 23, 1880 issue of Scientific American
      • The Relations of Cheap Patents to Industrial Prosperity
      • Becker's Automatic Fricton Brake
      • New Treatment for Typhoid Fever
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