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April 15


  • 1452 - Leonardo da Vinci born today 1452, great Renaissance thinker, chemist, artist, architect, and inventor.
  • 1730 - Felice Fontana born today 1730, an Italian physicist who discovered the water gas shift reaction in 1780. He is also credited with launching modern toxicology and investigating the human eye.
  • 1923 - Insulin became available for use by diabetics.
  • 1962 - The first meeting of the Society of Toxicology occurred today 1962, held in Atlantic City, New Jersey, USA.
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