CHACE, George Ide, physicist, born in Lancaster, Massachusetts, 19 February. 1808; died in Providence, Rhode Island, 29 April, 1885. He was graduated at Brown in 1830, and, after a year spent as principal of the preparatory classical school in Waterville, Maine, was appointed tutor in the department of mathematics and natural philosophy at Brown, and shortly afterward he became adjunct professor with Dr. Cas-well. For fifteen years he occupied the chair of chemistry, physiology, and geology, and for five .years the chair of moral philosophy and metaphysics. Onthe resignation of Dr. Sears he discharged the duties of president for one year. His entire service at Brown covered a period of forty-one years. In 1872 he retired from the University and spent a year and a half in foreign travel. In the closing years of his life he was a member of the municipal government of Providence, and president of the Rhode Island state board of charities and corrections. In 1853 the degree of Ph.D. was conferred upon him by Lewisburg, and that of LL.D. by Brown. The most important of his lectures and reviews were published with a life by James O. Murray (Boston, 1886).