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      Knowledge is Power

      Scientific American June 1926

      The Internal Heat of the Earth

      The Center of the Earth--What We Know of Its Temperature, Structure and Its Composition

      • By Frank Wigglesworth Clarke on June 1, 1926

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      More in the June 1926 issue of Scientific American
      • Eavesdropping on the Arctic
      • Mileage Goes Up in Smoke
      • Prodigal Mother Nature
      View Full Contents
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