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      Scientific American February 16, 1878

      Artificial Production of Corundum, Ruby, and Various Crystalline Silicates

      • By MM. E. Fremy, Feil on February 16, 1878

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      More in the February 16, 1878 issue of Scientific American
      • Collodio-Chloride Paper
      • Gas Analysis
      • Improved Hand Power Rock Drill
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