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      Knowledge is Power

      Scientific American August 24, 1912

      The Hooded Seal of the North Atlantic

      One of the Most Important Industries of Newfoundland

      • By Harry Whitney on August 24, 1912

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      More in the August 24, 1912 issue of Scientific American
      • A Review of the Physics of Light—I
      • The Manufacture and Application of Nitrous Oxide—II
      • High-Pressure Incandescent Gas Lighting
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