COLHOUN, Edmund R., naval officer, born in Pennsylvania, 6 May, 1821. He entered the navy as midshipman, 1 April, 1839; became a master, 6 January, 1853 : resigned, 27 June, 1853 ; re-entered the navy as acting lieutenant, 24 September, 1861 ; was commissioned commander, 17 November, 1862; captain, 2 March, 1869 ; commodore, 26 April, 1876, and rear-admiral, 3 December, 1882. when he was retired from active service. He served in the Mexican war in the first attack on Alvarado under Com. Connor, and in the assault on Tobasco under Com. Perry. In 1861-'2 he commanded the steamer "Hunchback," of the North Atlantic blockading squadron, and took part in the battle of Roanoke Island, the capture of Newbern, and the engagements below Franklin on the Blackwater River in October, 1862. In 1863 he commanded the steamer "Ladona," and afterward the monitor "Weehawken," of the South Atlantic blockading squadron, in her various engagements with Forts Sumter, Wagner, and Beau-regard, in the summer of 1863. In 1864-'5 he commanded the monitor "Saugus," attached to the North Atlantic squadron, and engaged How-lett's battery on James river, 21 June, and again 5 December, 1864, and took part in the bombardment of Fort Fisher, 25 December, 1864. and subsequent days. He was commandant at Mare island navy-yard, California, in 1879-'80, and inspector of vessels in California at the time of his retirement.