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      Scientific American May 1926

      Old Problems and New Methods in Prehistory

      The Relations Between the Physical and Cultural Evolution of Ancient Man

      • By George Grant MacCurdy 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
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