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      Knowledge is Power

      Scientific American May 1926

      The Scientific American Digest, May 1926

      A Review of the Newest Developments in Science, Industry and Engineering

      • By Albert G. Ingalls on May 1, 1926

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      More in the May 1926 issue of Scientific American
      • Acoustical Research in Auditoriums
      • Horsepower from the Tides
      • Malaria and the Mosquito Fish
      View Full Contents
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