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      Scientific American August 13, 1892

      Man's upward Struggle

      A Resume of the Anatomical Proofs of Our Former Quadrupedal Character

      • By Eugene Murray Aaron on August 13, 1892

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      More in the August 13, 1892 issue of Scientific American
      • The Intensity of the Radiation of Gas under the Influence of Electrical Discharge
      • Apparatus for Registering the Practical Work of Agricultural Machines
      • Spontaneous Conversion of Isoprene into Caoutchouc
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