Jeans, Jacob
educator, author, was born Oct. 4, 1800, in Philadelphia, Pa. He was professor of the practice of medicine in the Homeopathic college of Pennsylvania. He was the author of a volume entitled Practice of Medicine. He died Dec. 17, 1877.
JEFFERS, WILLIAM NICHOLSON, naval officer, author, was born Oct. 6, 1824, in Gloucester county, N. J. He was a United States naval officer who became a commodore in 1878, and was the author of Short Methods in Navigation; Theory and Practice of Naval Gunnery; Inspection and Proof of Cannon; and Ordnance Instruction for the United States Navy. He died July 23, 1883, in Washington, D. C.