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      Scientific American May 14, 1910

      The Porhydrometer--An Apparatus for Weighing Ship Cargoes

      • May 14, 1910

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      More in the May 14, 1910 issue of Scientific American
      • New Books, Etc.- May 14, 1910
      • An Industrial Laboratory for the Improvement of the Incandescent Lamp, Scientific Cider Making, and more
      • New Quebec Bridge Design, Fuel Economy and our Natural Resources, Does Radium Exist in the Pure State
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