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      Knowledge is Power

      Scientific American September 1927

      Sleepy Sickness

      Epidemic Encephalitis, or Sleepy Sickness, is Apparently a New Disease Whose Unknown Cause is Being Sought by Science

      • By Simon Flexner on September 1, 1927

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      More in the September 1927 issue of Scientific American
      • Dawn-Man or Ape?
      • In the Editor's Mail, September 1927
      • Patents Recently Issued, September 1927
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