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      Knowledge is Power

      Scientific American October 10, 1903

      Certain Curious Effects of the Violet Rays

      • By James Weir on October 10, 1903

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      More in the October 10, 1903 issue of Scientific American
      • Notes and Queries - October 10, 1903
      • The Largest Hydraulic Canal Locks in the World
      • Fruit and Nuts as Food
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