(1900) American geneticist and evolutionary biologist Theodosius Dobzhansky is born. He wrote many research articles on evolution, biology and human culture.
(1794) French chemist, naturalist, physician, and physiologist François-Vincent Raspail is born. He is known for being one of the founders of cell theory, which states that every cells comes from preexisting cells.
(1813) American physician James Marion Sims is born. He is remembered as the father of modern gynecology and worked to fix complications of obstructed childbirth.
(1923) American psychiatric patient Shirley Ardell Mason is born. Mason had multiple personality disorder (now known as dissociative identity disorder) and two movies and a book, all titled Sybil, were written about her life.