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      Digital & 4-Year Archive

      Scientific American October 30, 1875

      Scientific and Practical Information - October 30, 1875

      • October 30, 1875

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      More in the October 30, 1875 issue of Scientific American
      • Canadian Patents - October 30, 1875
      • Improved Refrigerator and Counter
      • Notes and Queries - October 30, 1875
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