MERRILL, Noses Emery, soldier, born in Brunswick, Maine, 3 September, 1803; died near Molino del Rey, Mexico, 8 September, 1847. He was graduated at the United States military academy, 1 July, 1826. assigned to the 5th infantry, and was on frontier duty till 1845. He had been promoted 1st lieutenant in 1833 and captain in 1837. Captain Merrill took part in the military occupation of Texas in 1845-'6 and in the Mexican war, being engaged at Palo Alto, Resaca de la Pahna, Monterey, the siege of Vera Cruz, and the capture of San Antonio. He was killed at Molino del Rey while leading the assaulting column in its attack on the enemy's works.--His son, William Emery, military engineer, born in Fort Howard, Brown County, Wisconsin, 11 October, 1837, was graduated at the United States military academy in 1859 and assigned to the engineer corps. He served for nearly a year at the United States military academy as assistant professor of engineering, acted as assistant engineer in the Army of the Potomac in March and April, 1862, and was chief engineer of the Army of Kentucky from 12 October, 1862, till 25 May, 1863, and of the Army of the Cumberland from 22 August to 17 September of the latter year. He took part in all the more important engagements of those armies till the close of the war. He was brevetted captain for gallantry in an engagement: before Yorktown, Virginia, promoted captain, 3 March, 1863, and made colonel of the veteran volunteer engineers, 2 July, 1864, which corps he had organized and with which he had been engaged in fortifying important points on the lines of military railroads in Tennessee, Alabama, and Georgia. He was brevetted major, lieutenant-colonel, and colonel for " faithful and meritorious services " at the battles of Chickamauga, Lookout Mountain, and Resaca, respectively. He was promoted major. 7 March, 1867, and lieutenant-colonel, 20 February, 1883. Since the close of the war he has served as chief engineer on the staff of Lieutenant-General Sherman and on important duty with his corps in the improvement of rivers and in surveys in the west. In 1878 he was ordered to visit Europe to obtain information respecting the construction of movable dams/and other professional subjects. He has since been stationed at Cincinnati in charge of improvements in the Ohio, Alleghany, Monongahela, and Muskingum rivers. He has published "Iron-Truss Bridges for Railroads" (New York, 1870) and "Improvement of Non-Tidal Rivers" (Washington, 1881).