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      Scientific American January 31, 1891

      The Composition of Koch's Lymph

      What Professor Koch says it is and what it can do

      • January 31, 1891

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      More in the January 31, 1891 issue of Scientific American
      • A New Electric Ballistic Target
      • Newer Physiology and Pathology
      • The Recovery of Silver and Gold from Plating and Gilding Solutions
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