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      Knowledge is Power

      Scientific American February 23, 1895

      The Study of Physical Astronomy—Suggestions to Students and Amateurs

      • By T. J. J. See on February 23, 1895

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      More in the February 23, 1895 issue of Scientific American
      • A Simple Viscosimeter
      • Free Traveling Libraries
      • The Applications of Ozone in Therapeutics
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