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      Knowledge is Power

      Scientific American September 29, 1906

      The Heavens in October

      • By Henry Norris Russell on September 29, 1906

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      More in the September 29, 1906 issue of Scientific American
      • Recently Patented Inventions
      • An Improved Window Raising and Locking Device
      • Some Remarkable Results with Armor-Piercing Shells
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