[SCIENCE]. HUMBOLDT, Friedrich Wilhelm Heinrich Alexander von and Aim BONPLAND. Essai sur la gographie des plantes; accompagn d'un tableau physique des rgions quinoxales. Paris: Levrault, Schoell et Compagnie, 1805. 4o. Engraved dedication leaf and large folding engraved plate. Original printed wrappers, uncut (worn & soiled). FIRST EDITION, mixed issue, with wrappers dated 1807 and title dated 1805. This work was reprinted in 1807 with minor changes -- an extra half-title, general title, and with the plate colored -- as Volume I of the 34 volume Voyage aux rgions quinoxiales du nouveau continent, fait en 1799, 1800, 1801, 1802, 1803 et 1804, published between 1807 and 1834. Garrison-Morton 145.55; Grolier/Horblit 51; Norman 1111.