an American scientist in early years, and later a popular preacher, was born at Washington, Connecticut, August 19, 1793, and was educated at Yale College (class of 1813). From 1816-18 he taught in his alma mater. In 1817 he was elected professor of mathematics in the North Carolina University, whither he removed at once. In 1825 he was transferred to the chair of chemistry, and in this position he greatly distinguished himself. In 1831 he turned towards the ministry, was ordained by the Presbytery of Orange, and became noted as an able preacher and a good Biblical scholar. He died at Black Mountain, N.C., June 27, 1857. Dr. Mitchell contributed frequently to the Journal of Science.