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      Memorial Day Sale

      Scientific American March 20, 1915

      A New Era in the Science of Nutrition

      How Two Masters in the Art of Experimentation are Bringing this About

      • By R. L. Kahn on March 20, 1915

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      More in the March 20, 1915 issue of Scientific American
      • Efficiency of Coal and Electric Heaters
      • Hydrogen and the Rare Gases
      • The Cutlery Works of Thiers
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