Andrew Crombie Ramsay, a British geologist, born in Glasgow, Jan. 31, 1814. He was early connected with the geological survey of Great Britain, of which he became a director in 1845, and director general in 1872. He was appointed professor of geology at University college, London, in 1848, and at the royal school of mines in 1851, which latter office he still holds (1875). He was president of the geological society in 1862-3, and in 1872 succeeded Sir Roderick Murchison as director general of the museum of practical geology. His works include "The Geology of Arran" (1841); "Geology of North Wales " (1858); "Geological Map of England and Wales" (1859); "The Old Glaciers of North Wales and Switzerland" (1860); "Physical Geology and Geography of Great Britain" (1863; 4th ed., 1875); and vol. v. of the "Geological Survey of Great Britain " (1856-66), comprising "Geology of Wiltshire and Gloucestershire." He has in preparation (1875) a work on the formation of hills and valleys, to be entitled "Earth Sculpture".