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      Scientific American April 16, 1898

      The Key of the Gulf--The Tortugas Islands

      • By C. F. Holder on April 16, 1898

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      More in the April 16, 1898 issue of Scientific American
      • A Locomotive and its Equivalent in Raw Materials
      • Jubilee Anniversary of the American Science Association
      • Pueblo Arts and Industries.–II
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