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      Scientific American January 16, 1915

      Drop Head, a New Ailment

      • By Leonard Keene Hirshberg on January 16, 1915

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      More in the January 16, 1915 issue of Scientific American
      • A Mine in a Meteor-Made Crater
      • Quack Tree Surgeons, Oil Paint on Cement
      • A New Whole Wheat Flour
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