WALDEMAR CHRISTOFER

BROGGER (1851— )  , Norwegian geologist, was born in Christiania on the loth of November 1851, and educated in that city . In 1876 he was appointed curator of the geological museum in his native city, and assistant on the Geological Survey . He was professor of mineralogy and geology from 1881 to 18go in the university of Stockholm, and from 1890 in the university of Christiania . He also became rector and president of the senate of the royal university of Christiania . His observations on the igneous rocks of south Tirol compared with those of Christiania afford much information oa the relations of the granitic and basic rocks . The subject of the differentiation of rock-types in the process of solidification as plutonic or volcanic rocks from a particular magma received much attention from him . He dealt also with the Palaeozoic rocks of Norway, and with the late glacial and post-glacial changes of level in the Christiania region . The honorary degree of Ph.D. was conferred upon him by the university of Heidelberg and that of LL.D. by the university of Glasgow . The Murchison medal of the Geological Society of London was awarded to him in 1891 .