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      Spring Flash Sale

      Scientific American December 22, 1917

      Building a Moving-Picture Camera

      A Serviceable Home-Made Machine for $6.50

      • By E. H. Williamson on December 22, 1917

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      More in the December 22, 1917 issue of Scientific American
      • Chemical Differentiation of the Central Nervous System in Invertebrates
      • Fustic
      • Stepped Ignition of Gases
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