Tag Archives: Mark A. Gray

Experimental evidence for the humoral circulatory system

Mark A. Gray¬† Kansas City, Kansas   Four Humors from the Book of Alchemy by Thurn-Heisser, Leipzig, Germany (1574). Via Wikimedia. Public domain. Humoralism, otherwise known as Hellenistic or Galenic medicine, posited the existence of four humors that were required to be kept in balance to maintain health. Blood was special among these humors, believed […]