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      Knowledge is Power

      Scientific American August 10, 1901

      Household Tests for the Detection of Oleomargarine and Renovated Butter

      • By G. E. Patrick on August 10, 1901

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      More in the August 10, 1901 issue of Scientific American
      • An Universal Alphabet
      • Marketing and Preserving Eggs
      • The “Santos-Dumont No. 5”
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