300 THE CORRESPONDENCE OF SCHWEINITZ.AND TORREY 
Smith, James Edward (1759-1828). One of the most famous of 
British botanists; purchaser of the herbarium of Linnaeus in 1784; 
fonder of the Linnean Society of London, 1788, and its first 
president, 1788-1828; knighted, 1814. 
Sprengel, Kurt Polykarp Joachim (1766-1833). German botanist 
and physician; graduate in medicine of the university at Halle, 
where he was a professor from 1789 until his death forty-four 
years later; author of many works upon medical and botanical 
subjects. He was noteworthy for his combination of thorough 
scholarship and great versatility. 
Thorburn, Grant (1773-1863). New York seedsman; native of Scot- 
land, coming to America in 1794; also vain as a writer, under 
the pen-name of ‘‘ Laurie Todd.” 
Treviranus, Ludolf Christian (1779-1864). German physician; pro- 
fessor of botany at Breslau, 1816-30, and at Bonn, 1830-64. He 
was the author of many works, particularly in the fields of plant 
morphology and physiology. 
Van Rensselaer, Jeremiah (1793-1870). Physician and geologist; 
member of the Lyceum of Natural History of New York, and its 
corresponding secretary from 1824 to 1836; his lectures on geology 
before the New York Athenaeum in 1825 were published in ane 
form. 
Van Vleck, Jacob (1751-1831). Moravian clergyman, bishop from 
1815; friend and correspondent of Muhlenberg and other botanists; 
collected plants around Salem, North Carolina, about 1814. 
Van Vleck, William Henry (1790-1853). Moravian clergyman, bishop 
from 1836; pastor at Philadelphia and New York, and (after the 
death of Schweinitz) at Salem, North Carolina. Son of Jacob 
Van Vleck, above-mentioned. 
Wallich, Nathaniel (1786-1854). Physician, of Danish birth; went to 
Serampore as medical attaché in 1807; when Serampore was taken 
over by the British in 1813, he entered the service of the East 
India Company and was thenceforth a British subject; superin- 
tendent of the Calcutta Botanic Garden, the highest botanical 
official position in India, 1815-46; spent his last years in London. 
Wight, Robert (1796-1872). British botanist: in India from 1819 to 
1853, and famous for his publications relating to the Indian flora; 
superintendent of the Botanic Garden at Madras. 
