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      Knowledge is Power

      Scientific American December 12, 1914

      The Effect of Water Pressure upon the Form of Fishes

      A Study of Evolution of Form Resulting from Conditions of Life and Habits

      • December 12, 1914

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      More in the December 12, 1914 issue of Scientific American
      • Acoustics of Auditoriums—II
      • How to Determine Type of Motor
      • The Prismatic Astrolabe
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