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      Knowledge is Power

      Scientific American June 17, 1876

      Deepening Channels to Reduce Flood-Height

      To the Editor of the Scientific American

      • June 17, 1876

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      More in the June 17, 1876 issue of Scientific American
      • A Spiral Steam-Jacket
      • Comparative Value and Strength of Astringents
      • Explosions in Mines
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