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      Scientific American August 27, 1881

      Retouching Gelatine Negatives

      • By William Shawcross on August 27, 1881

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      More in the August 27, 1881 issue of Scientific American
      • The Barrow Depositing Dock
      • The Theory of the “Conservation of Tissue”by the use of Alcohol
      • Aeronautical Society of Great Britain
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