An American chemist who won the Nobel Prize in Chemistry in 1946 for discovering enzyme that could be crystallized. He was a member of both the National Academy of Science and the American Academy of Arts and Sciences.
He obtained a bachelor's degree from Harvard University in 1910.
His left arm had to be amputated below the elbow after he was accidentally shot by a friend while hunting as a teenager.
He had four sons with his wife Cid Ricketts, who he married in 1915.
Like Irving Langmuir, he was among the first American chemists to win the Nobel Prize in Chemistry.