204 THE CORRESPONDENCE OF SCHWEINITZ AND TORREY 
Gates, Hezekiah (17—~1850?). Physician and apothecary for many 
years at Mobile, Alabama; first resident collector of the plants of 
that vicinity. 
Graham, Robert (1786-1845). Professor of botany for a few years at 
Glasgow, and for 27 years at Edinburgh, Scotland; president of the 
Botanical Society of Edinburgh. 
Gray, Asa (1810-1888). The most famous American botanist of his 
time, professor at Harvard for forty-six years. Before going to 
Harvard he was long associated with Torrey in work upon the 
North American flora; the beginning of their relations is referred 
to in Torrey‘s last letter to Schweinitz. 
Greene, Benjamin Daniel (1793-1862). Capitalist, of Boston, Massa- 
chusetts; thorough student and liberal patron of botany; one of 
the founders, and the first president, of the Boston Society of 
Natural History. 
Greville, Robert Kaye (1794-1866). Scottish philanthropist, of 
Edinburgh, noted for his diligent work and extensive publication 
in the field of cryptogamic botany. 
Halsey, Abraham (1790-1857). Book-keeper and bank- clerk in New 
York City; first American specialist in lichenology; member of 
the Lyceum of Natural History of New York. 
Hitchcock, Edward (1793-1864). Geologist and botanist; principal 
of the academy at Deerfield, Mass., 1815-18; Congregational 
clergyman, 1821-25; professor at Amherst College, 1825-64, 
and its president for ten years, 1845-54; state geologist of Massa- 
chusetts, 1830-44. He was the first presiding officer (1840) of 
the Association of American Geologists, and was one of the original 
members (1863) of the National Academy of Sciences. He was the 
author of numerous books and papers on geological, religious, 
and historical topics; also two plant catalogues, one (1829) re- 
lating to the vicinity of Amherst, the other (1833; revised, 1835) 
to the state of Massachusetts. 
Hooker, William Jackson (1785-1865). Regius professor of botany 
at Glasgow, Scotland; afterward, for the last. twenty-five years 
of his life, director of the Royal Gardens, Kew, England; knighted, 
1836. Author of many monumental works in. various branches of 
botanical science. 
Hiiffel, Christian Gottlieb (1762-1842). ` Moravian bishop; in charge 
of the work in the northern part of the United States from 1818 
until 1825, when he returned to Germany. 
