DOCT. SILAS HALL, son of Ezra Hall, was born in Dec. 1792. In 1808, moved with his father to Cayuga Co., N. Y. In 1815, commenced the study of medicine with Consider King, an excellent physician, and received his diploma in 1818. After ten years of practice at Sempronius, the county seat, he removed to Monrovia, where he has since resided.