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      Scientific American April 09, 1881

      Chemical Society, London, Jan. 20, 1881

      • By H. E. Roscoe on April 9, 1881

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      More in the April 09, 1881 issue of Scientific American
      • A New Method of Preparing Metatoluidine
      • Interesting Electrical Researches
      • Telephony by Thermic Currents
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