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From discussion: In order posted: of the sciences Dr. Samuel A. Silk - Hero psychiatrist. Herman Boerhaave - Dutch botanist, chemist, Christian humanist, and physician of European fame. Gregor Mendel - founder of the modern science of genetics. Dmitri Ivanovich Mendeleev - created his own version of the periodic table of elements Abraham Waksman, Nobel Prize for Physiology or Medi...