766 Historical Sketch of the Science of Botany [December, 
From the manner of writing, we may often perceive the char- 
acter of aman. Whoever may read his “ Journal of travels into 
the Arkansas territory,’ published in Philadelphia, 1821, will be 
delighted at the plain, unpretending style, the ‘‘ unvarnished tale,” 
as he expresses himself in the preface, and will divine in Thomas 
Nuttall an amiable man. 
In the years 1834 and 1835, Nuttall crossed the Rocky moun- 
tains to the Pacific coast, explored Oregon and California, made 
an excursion to the Sandwich islands, and returned around 
Cape Horn to the Atlantic coast. Besides the above-mentioned 
books, he published his “Genera of North American plants,” in 
two volumes, Philadelphia, 1818; an “Introduction to systematic 
and physiological botany,’ Cambridge, 1827, and numerous de- 
scriptions of new plants, mostly in the Proceedings of the Acad- 
emy of Natural Science, in Philadelphia. He died at the ripe 
age of seventy-three, on the roth of September, 1859, in Lan- 
cashire in England. 
Nuttall and Bradbury are mentioned by W. Irving in his As- 
toria, in which he describes the voyages of the parties sent out 
to Oregon by Mr. Astor. As both gentlemen left the expedition 
on the upper Missouri, these voyages had no further relation to 
botany. 
Several other foreign botanists collected at that time in North 
America. Alire Raffenau Delile, professor of botany at the Uni- 
versity of Montpellier, in France, after his return from the F rench 
Scientific Expedition in Egypt, a prominent member of which he 
was, came over to America and collected during three years, in 
the vicinity of Wilmington, N. 
José Francisco Correa de Serra, secretary of the Royal Acad- 
emy of Lisbon, came in the year 1813 to New York and Phila- 
delphia, from where he made several excursions. 
From 1817 to 1823 Mr. Milbert collected for the Museum of 
Natural History at Paris. He lived in New York and extended 
his excursions to the Ohio, Mississippi, Lake Superior and 
Cana 
Active American botanists of that time were Amos Eaton, 
professor in Albany, N. Y. He lived from 1776 to 1842, and 
~ published the first edition of his Manual of Botany, 1817, and of 
-eight editions the last in 1841. 
James a was ned of botany i in Boston. His first a : 
