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      Scientific American September 20, 1879

      American Association for the Advancement of Science

      Meeting of 1879, at Saratoga Springs, N. Y

      • By Henry Draper on September 20, 1879

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      More in the September 20, 1879 issue of Scientific American
      • A Mirror Barometer
      • Influence of Electricity on Colliding Water Drops
      • On A New Violet Coloring Matter
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