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      Knowledge is Power

      Scientific American September 02, 1911

      Simple Household Inventions

      Clever Novelties from Abroad

      • September 2, 1911

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      More in the September 02, 1911 issue of Scientific American
      • A Scale for Measuring the Merit of English Writing
      • The Gyrostatic Force of Rotary Engines
      • Bones Set with Aluminium
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