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Authors
- Huxley, Thomas Henry, 1825-1895 author2
- Agassiz, Louis, 1807-1873, author1
- Darwin, Charles, 1809-18821
- Du Bois, Henry A. (Henry Augustus), 1808-1884 author1
- Geikie, Archibald, 1835-1924, author1
- Keen, William W. (William Williams), 1837-1932 author1
- Lowell, John Amory, 1798-18811
- Romanes, George John, 1848-1894, author1
- Thiselton-Dyer, William T. (William Turner), 1843-1928, author1
- Wallace, Alfred Russel, 1823-1913 author1