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      Knowledge is Power

      Scientific American November 19, 1881

      Influence of Forests on Water Courses

      • By David D. Thompson on November 19, 1881

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      More in the November 19, 1881 issue of Scientific American
      • Hospital of st. Eloi, at Montpellier, France
      • Practical Hints on Saving Silver and Gold Wastes
      • The Late Discovery of Egyptian Remains
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