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      Knowledge is Power

      Scientific American October 20, 1877

      Binocular Microscope for High Powers

      • By J. Traill Taylor on October 20, 1877

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      More in the October 20, 1877 issue of Scientific American
      • Bacteria and Vibrios
      • Dennison's “Ingurgitator” Dredge
      • Influence of Heat Upon Magnetisation
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