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      Knowledge is Power

      Scientific American August 1926

      The Scientific American Digest, August 1926

      Newest Developments in Science, Industry and Engineering

      • By Albert G. Ingall on August 1, 1926

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      More in the August 1926 issue of Scientific American
      • A Monster that Answers a Finger's Touch
      • From the Scrap-book of Science--Camera Shots of Scientific Happenings
      • Novel Devices for the Shop and the Home
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