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      Knowledge is Power

      Scientific American September 30, 1899

      Electric Lighting at the Covent Garden Theater

      • September 30, 1899

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      More in the September 30, 1899 issue of Scientific American
      • An Improvement in the Manufacture of Arsenate of Lead
      • New Books, Etc. - September 30, 1899
      • The Euphrates Valley Railroad
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