- Pyle, Andrew (9)
- Clifford, William Kingdon, 1845-1879 (1)
- Helmholtz, Hermann Ludwig Ferdinand von, 1821-1894 (1)
- Herschel, John F. W. (John Frederick William), Sir, 1792-1871 (1)
- Jevons, William Stanley, 1835-1882 (1)
- Lewes, George Henry, 1817-1878 (1)
- Mach, Ernst, 1838-1916 (1)
- Poincaré, Henri, 1854-1912 (1)
- Whewell, William, 1794-1866 (1)