a Jewish rabbi, was born at Leeuwarden, Holland, January 4, 1804. His father having emigrated to England, young Isaacs received his education there. In 1839 he came to New York to take charge of the congregation Benai Jeshurun, then worshipping in Elm Street. In 1857 he commenced the publishing of the Jewish Messenger, which was intended to uphold conservative Judaism against the so-called reformed party. In 1877 Isaacs retired from his ministry of the Shaare Tefila congregation, with which he had been connected since 1845, and died May 19, 1878. He was highly respected, not only by his own coreligionists, but also by Christians. (B.P.)