Charles Giles Bridle Daubeny, an English natural philosopher, born at Stratton, Gloucestershire, Feb. 11, 1795, died Dec. 13, 1867. He studied medicine at Edinburgh, and was professor of chemistry at Oxford from 1822 to 1855, and of botany from 1834. He travelled in the United States in 1837-'8, and directed his observations particularly to mineral springs, of which, and of the geology of North America, he published accounts in the papers of the Ashmolean society and of the British association in 1838. He was president of the British association in 1856. He published a "Description of Volcanoes" (1826 and 1848), "Introduction to the Atomic Theory" (1831 and 1850), and "Lectures on Climate" (1863). His papers on the volcanoes of Italy, and the extinct volcanoes of central France, possess great geological interest. He proposed the theory that the bases of the earths exist in a metallic state, and by their oxidation give rise to volcanic fires. He also wrote on the chemical actions exhibited in the growth of plants.