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      Knowledge is Power

      Scientific American September 1923

      More Water for Washington

      The Great New Conduit that Will Double the Capital City's Supply

      • By George H. Dacy on September 1, 1923

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      More in the September 1923 issue of Scientific American
      • A Flexible Clutch for Marine Diesel Engines, Friendly Germs
      • Camps of the Central Circle
      • Keeping the Ash in Motion
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