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      Knowledge is Power

      Scientific American March 25, 1905

      Business and Personal Wants - March 25, 1905

      READ THIS COLUMN CAREFULLY……..

      • March 25, 1905

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      More in the March 25, 1905 issue of Scientific American
      • A Novel Process for using Blue Light as an Anæsthetic
      • Japan's Losses on the Sea
      • Registering Thermometer
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