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      Scientific American February 16, 1878

      On a New Arrangement for Distinguishing the Axes of Doubly Refracting Substances

      • By H. C. Sorby

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      More in the February 16, 1878 issue of Scientific American
      • Artificial Production of Corundum, Ruby, and Various Crystalline Silicates
      • Collodio-Chloride Paper
      • Gas Analysis
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