Louis Agassiz, Lithograph, Mid 19th Century.
Jean Louis Rodolphe Agassiz (May 28, 1807—December 14, 1873) was a paleontologist, glaciologist, and geologist, and was a prominent innovator in the study of the earth's natural history. He grew up in Switzerland and became a professor of natural history at University of Neuchâtel. Later, he accepted a professorship at Harvard University in the United States.