818. Michaux's Travels to the West of the Alleghany Mountains. 1805. 8vo.--These travels are instructive regarding the manners, commerce, soil, climate, and especially botany.
819. Lewis and Clarke's Travels up the Missouri to the Pacific Ocean, 1804-6. 4to.
820. Pike's Exploratory Travels through the Western Territory of North America. 4to.
821. James's Account of an Expedition to the Rocky Mountains, 1819-20. 3 vols. 8vo.
822. Schoolcraft's Travels to the Sources of the Mississippi. 1820. 8vo.
823. Nuttall's Travels into the Arkansa Territory. 1819. 8vo.--These travels describe a vast portion of America to the west of the Alleghany Mountains, especially the valley of the Mississippi, and its tributary streams. They are rather prolix and heavily written. Mr. James's work is richest in natural history.
824. A Concise Natural History of East and West Florida. By Bernard Romans. New York, 1766. 12mo.--The climate, productions, and diseases of Florida are here treated of by this author, who was a medical man, and had good opportunities of observation and experience.
825. Description de la Louisiane. Par L.P. Hennepin, Paris, 1688. 12mo.--This author first made Europe acquainted with Louisiana; but his work is meagre on every topic, except the manners, &c. of the natives.
826. Histoire de la Louisiane. Par M. Le Page du Prats. Paris, 1758. 3 vols. 12mo.--During a residence of 15 years, this author seems to have paid particular attention to geology, mineralogy, and other branches of natural history, and has given the results of his observations in these volumes.
827. Travels through that part of North America called Louisiana. Translated and illustrated with notes by R.B. Forster. 1771-2. 2 vols. 8vo.--The author of this work was a M. Bossu; who also published, a few years afterwards, Nouveaux Voyages dans l'Amerique Septentrionale. Amsterdam. 8vo.--The first of these works is chiefly interesting from the minute details into which it enters respecting the Illinois territory. Mr. Forster's translation contains a catalogue of American plants.