Louis John Rudolph Agassiz Small 259×320 Medium 518×640 Large 828×1024 Download Tiff Original 1941×2400 | (1.3 MB) Description (1807-1873) Swiss-American geologist and naturalist famous for his study of glaciers. Keywords geologist, glacier study, Jean Louis Rodolphe Agassiz, Louis John Rudolph Agassiz, naturalist, Swiss, zoologist Galleries Biologists, Famous People: A, Geologists Source: Ellsworth D. Foster ed. The American Educator (vol. 1) (Chicago, IL: Ralph Durham Company, 1921)