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      Knowledge is Power

      Scientific American September 26, 1914

      Gas Batteries, A Remarkable Natural Bridge, and more

      • By Harry N. Holmes on September 26, 1914

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      More in the September 26, 1914 issue of Scientific American
      • The Effect of the Zeppelin Bombardment of Antwerp
      • Correspondence- September 26, 1914
      • Science in Peace and in War, A Real Test of the Flying Machine in War, and more
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