HODGE, James Thatcher, geologist, born in Plymouth, Massachusetts, 12 March, 1816; died in Lake Huron, 20 October, 1871. He was a descendant of Dr. James Thatcher, the medical historian of the Revolutionary war, and was graduated at Harvard in 1836. He devoted himself to the pursuit of geology and mineralogy, and his scientific knowledge and zeal soon attracted the attention of professional experts. He was employed on the state geological survey of Maine under Dr. Charles T. Jackson, and on that of Pennsylvania under Professor Henry D. Rogers, also at times serving on the geological surveys of New Hampshire and Ohio. Mr. Hodge afterward took part in several enterprises for the development of the United States and the promotion of mechanical inventions. He travelled extensively through this country and England, and wrote valuable papers on scientific and industrial topics, including numerous articles in the "New American Cyclopaedia." For some years he had been engaged in the explorations of the mining regions of the territories, and for several months before his death was employed on a geological investigation in the Lake Superior region. On his return he embarked on the steamer "R. G. Coburn," which was lost in Lake Huron.