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      Scientific American September 29, 1900

      The Fish River Caves, Near Sydney, Australia

      • By J. E. Richter on September 29, 1900

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      More in the September 29, 1900 issue of Scientific American
      • Contemporary Electrical Science
      • Reduction and Reversal of the Photographic Image with Permanganate of Potash
      • The Loss of the “Framée”
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