a Presbyterian. minister, was born at Maltaville, N.Y., July 5, 1808. He graduated from Union College in 1834, and pursued his studies in the Western Theological Seminary. He was licensed by the Presbytery of Beaver in 1837, and ordained by the Presbytery of Erie, April 20, 1848. He then visited Europe, sojourning in Rome for several years. His principal business was teaching. During the war of the rebellion he acted as chaplain for some three years. He died March 18, 1880. As a scientific scholar and antiquarian Dr. Olmstead has had few equals among his brethren of the Presbytery. See Necrol. Report of Princeton Theol. Semn. 1881, page 54.