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      Scientific American April 20, 1918

      Testing Eggs by Photography

      Some of the Things Which the Eyes of the Camera Sees When it Looks Through the Hen's Creations

      • By Jacques Boyer on April 20, 1918

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      More in the April 20, 1918 issue of Scientific American
      • The Motor-Driven Commercial Vehicle--April 20, 1918
      • Sewer Pipe Laid on Lake Bottom, Geology in the War, and more
      • Correspondence- April 20, 1918
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