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      Scientific American June 04, 1887

      Improved Methods of Heating Railway Trains

      II.The Twofold Method-Continuous or Independent

      • By C.Powell Karr on June 4, 1887

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      More in the June 04, 1887 issue of Scientific American
      • Acuteness of Hearing
      • Business Profits
      • New Tunnel under the Thames River, London
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