Joseph Addison Alexander, D. D., third son of Dr. Archibald Alexander, born in Philadelphia, April 24, 1809, died at Princeton, N. J., Jan. 28, 1800. He graduated at the college of New Jersey in 1820, and from 1880 to 1833 was adjunct professor of ancient languages and literature. He was afterward assistant teacher of Biblical and oriental literature in Princeton theological seminary, and in 1838 was elected by the general assembly of the Presbyterian church professor of Biblical criticism and ecclesiastical history. In 1852 he was transferred to the chair of Biblical and ecclesiastical history, which he occupied till his death. He published " The Psalms Translated and Explained" (3 vols. 12mo, 1850); " The Prophecies of Isaiah" (revised ed., 2 vols. 8vo, 1864), and an abridgment of the same work; a volume on primitive church government, and numerous essays in the "Biblical Repertory" and "Princeton Review." At the time of his death he was engaged, in connection with Dr. Hodge, in preparing a commentary on the New Testament, of which "Notes on the New Testament Literature" and "The Gospel according to Matthew" have been published.