JAGGAR, THOMAS AUGUST US

| JR. (1871), Geologist; b. in Philadelphia. Bachelor of Arts, 1893; Harvard College, 1894; Master of Arts, 1897; Doctor of Philosophy; Student of Munich and Heidelberg; instructor geology, 18951903; a istant profe or, 1903-1906, at Harvard; 1904-1917, profe or of geology and head of department; 1904-1912, Ma achusetts Institute of Technology; 1898-1904, in charge of work in Ma achusetts, Arizona, and South Dakota; a istant geologist of United States Geological Survey; in charge of various volcano expiditions from 1902-1914; 1911, established volcano experiment station in Hawaii; Volcanologist in charge States Weather Bureau; Fellow American Geographic Society.