Quote of the day
Physiology and psychology cover, between them, the field of vital phenomena; they deal with the facts of life at large, and in particular with the facts of human life.
Waldemar Lindgren

Born: February 14, 1860
Died: November 3, 1939 (aged 79)
Bio: Waldemar Lindgren was a Swedish-American geologist. Lindgren was one of the founders of modern economic geology.
Known for:
- Mineral deposits (1913)
- The Ore Deposits of New Mexico (1910)