First Edition. hardcover. Hand-colored folding map. 155pp. 8vo, 1/4 brown morocco, orig. wrs. bound in. London, 1840. First edition. 2 tears in folds of map, otherwise a near fine copy. very good(+).
"During 1831-5...he (Schomburgk) explored the rivers Essequibo (the sources of which he was the first to reach), Corentya and Berbice, and investigated in detail the capabilities of the colony of British Guiana...(in) 1840 he was appointed commissioner for surveying and marking out the boundaries of the colony." DNB XVII, p. 926.