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      Knowledge is Power

      Scientific American April 30, 1892

      The Earl of Rosse's Great Reflecting Telescopes at Birr Castle

      • By Otto Baeddicker on April 30, 1892

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      More in the April 30, 1892 issue of Scientific American
      • Composition of Starch
      • The Air a Nitrogenous Fertilizer for Legumes
      • The Physical Insensibility of Women
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