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      Knowledge is Power

      Scientific American October 31, 1914

      The Heavens in November

      Transit of Mercury Across the Face of the Sun

      • By Henry Norris Russell on October 31, 1914

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      More in the October 31, 1914 issue of Scientific American
      • Saving $10,000 a Day in the Navy
      • Recently Patented Inventions- October 31, 1914
      • Letters from the Firing Line - Traits of the French Soldier - October 31, 1914
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