; born in New London, N. H.
, Dec. 16, 1812; graduated at the United States Military Academy and commissioned second lieutenant of artillery in 1836; later transferred to the engineer corps; promoted captain in 1853 and major in 1861.
He served in the Civil War
in the defence of the national capital and in the engineering work of the Army of the Potomac; and later was superintendent of the engineering operations against Yorktown
He received the brevet of brigadier-general for gallantry in the battle of Fredericksburg
, for throwing
Frontispiece to Webster's spelling-book.|
bridges across the Rappahannock
in face of the enemy.
He was made commandant at Key West, Fla.
, in 1863, where he died of yellow fever in 1864.