DAUBENY, CHARLES GILES English scientist born at Stratton, Gloucestershire, on Feb. 11, studied medicine. He was professor of chemistry (1822-55), and of botany (1834-67) at Oxford, and carried out numerous experi ments on the effect of changes in soil, light, etc., on plants. He also made an extensive survey of the volcanoes of Europe, the results of which are embodied in his Description of Active and Extinct Volcanoes (1826; 2nd ed., 1848). He died at Oxford on Dec. 12, 1867.