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      Scientific American April 05, 1890

      The Refinements of Modern Measurements and Manipulations

      • By J. A. Brashear on April 5, 1890

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      More in the April 05, 1890 issue of Scientific American
      • Curious Process of Cutting an Orange Skin
      • New Electrical Process for the Manufacture of White Lead
      • Patents- April 5, 1890
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