; born in Lexington, Ky.
, in 1810; graduated at the United States Military Academy in 1834; became a captain in the engineer corps in 1838; was for several years engaged in improving the Ohio River
and in the construction and repair of the interior defences of New York Harbor; served in the Mexican War
, receiving the brevet of major for gallantry in the battle of Monterey
; and later was engaged in improving the Delaware bay
and river, and in constructing Fort Delaware
He published Memoirs on the resources of the Valley of the Ohio
, etc. He died in Fort Delaware
, July 29, 1858.