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      Knowledge is Power

      Scientific American August 14, 1909

      Oxhydric Process of Cutting Metals.—I

      Torches and Machines that Cut Steel

      • By E. F. Lake on August 14, 1909

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      More in the August 14, 1909 issue of Scientific American
      • A Novel Letter-Copying Machine
      • Definition of Head of Water
      • Some New Bacteriological Discoveries
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