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      Knowledge is Power

      Scientific American July 17, 1886

      Notes and Queries - July 17, 1886

      Hints to Correspondents

      • July 17, 1886

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      More in the July 17, 1886 issue of Scientific American
      • Car Coupling
      • Engineering Inventions - July 17, 1886
      • Rare Specimens of Marmosets
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