[48] Sir Robert Christison, 1798-1882; professor of materia medica in the University of Edinburgh.
[49] James T. W. Johnston, 1796-1865; agricultural chemist; professor at Durham. Lectured in the United States.
[50] Francis Boott, 1792-1863. Born in Boston, United States. Early removed to London, where he studied and practiced medicine a few years. “A good botanist, and in his later life devoted to the study of Carices” [A. G.].
[51] John Joseph Bennett, 1801-1876; keeper of the herbarium of the British Museum. “One of the most learned and modest of men” [A. G.].
[52] Sir John Richardson, M. D., 1787-1865. “The well-known Arctic explorer, zoölogist, and botanist” [A. G.].
[53] David Don, 1795-1856; librarian of the Linnæan Society; professor of botany in King’s College, London.
[54] Frederic Pursh, 1774-1820. Emigrated to America, 1799. Traveled and collected much; settled later in Montreal, where he died.
[55] Aylmer Bourke Lambert, 1762-1842; author of the Genus Pinus and the Genus Cinchona. Owned a very large herbarium comprising plants of Pursh, who published under his liberal patronage.
[56] John Forbes Royle, M. D.; a surgeon in the East India Company. Wrote on the botany of the Himalaya.
[57] John Edward Gray, 1800-1875; keeper of the zoölogical collections of the British Museum for many years. “Of persistent ardor, indomitable energy, and great practical power” [A. G.].