THE CORRESPONDENCE OF SCHWEINITZ AND TORREY 297 
out this period he wasa keen student of the flora of the state (one 
page of his manuscripts is headed ‘‘Catalogue of plants to be sent 
to Mr. Schweinitz”), but his published papers include none with 
botanical titles. He lost his life on the mountain to which he 
had devoted much study and which has since borne his name, 
Mount Mitchell, the highest peak in the United States east of the 
Rockies. 
Muhlenberg, Gotthilf Henry Ernest (1753-1815). Lutheran clergy- 
man; native of Pennsylvania, but educated for seven years in 
Germany; pastor for thirty-five years (1780-1815) at Lancaster, 
Pennsylvania. He began the study of botany before going to 
Lancaster, and continued it diligently throughout his life. His 
manuscript notes contained full descriptions and comments upon 
all the plants he studied, but only the part relating to grasses 
appeared in print in full, and this not until after his death. His 
floras and catalogues published during his lifetime, although full 
of records of novelties, were little more than barren lists of names. 
He was in correspondence with many European botanists, as well 
as American ones. 
Nuttall, Thomas (1786-1859). Botanist and ornithologist; native of 
ngland, where he spent the last eighteen years of his life; most of 
his scientific activity, however, was during the thirty-three years 
(1808—41) of his residence in the United States. His little work, 
“Genera of North American plants” (1818), is one of the classics 
of American botany. 
Oakes, William (1799-1848). New England botanist, devoted par- 
ticularly to the study of the flora of New Hampshire, Vermont, 
and eastern Massachusetts; his extensive collections, to be found in 
many herbaria, are remarkable for their excellence. He was a 
graduate of Harvard, and educated for the law, but gave up his 
profession after only a few years to devote his time entirely to 
scientific study. 
Percival, James Gates (1795-1856). Poet and geologist; medical 
graduate of Yale; for a few months in 1824 professor of chemistry 
at West Point; afterward state geologist of Connecticut (1835-42) 
and of Wisconsin (1854-56). 
Perrin, —. French collector of plants in the West Indies, about 1808; 
brought his collections to New York, where he died; his plants after- 
ward fell into the hands of Hosack and Torrey, and some of them 
were described by Sprengel. Torrey’s letter of October 12, 1821, 
tells more about Perrin than appears to have been printed hitherto. 
