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      Knowledge is Power

      Scientific American March 19, 1881

      United States Ocean Commerce in United States Built Ships

      • March 19, 1881

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      More in the March 19, 1881 issue of Scientific American
      • A Newly Discovered Property of the Ellipse, and its Application to the “Oval Chuck”
      • Charcoal in Infantile Diarrhea
      • Glass as an Obstructor of Light
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