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      Scientific American November 13, 1897

      The Seventh International Geological Congress--The Caucasus Excursion

      • By E. O. Hovey on November 13, 1897

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      More in the November 13, 1897 issue of Scientific American
      • An Acetylene Gas Lamp for Bicycles
      • Increase in our Artillery Urgently Needed
      • The Latest Roller Boat
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