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      Scientific American March 16, 1918

      Doing Away with the Arc

      How the Incandescent Lamp and Optical System Were Developed for Motion-Picture Projection

      • By R. P. Burrows, J. T. Caldwell on March 16, 1918

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      More in the March 16, 1918 issue of Scientific American
      • Masterpieces of Primitive Engineering
      • The Motor-Driven Commercial Vehicle- March 16, 1918
      • The Hospital on Rails
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