The events of the life of Samuel Seymour are now not known. James D. Graham (1799-1865), a Virginian, was a West-Pointer of the class of 1817. When ordered on Long's expedition he was first lieutenant in the artillery corps. From 1822-29 was on topographical duty in Vermont and elsewhere. This experience was followed by a number of years of railroad surveying, and he also took part in nearly all the federal boundary surveys of the period, serving on the northeastern, Canadian, and Mexican boundary commissions. During the later years of his life he was in charge of harbor improvements on the Atlantic coast and Great Lakes, and while engaged in the latter work discovered the existence of lake tides. At the time of his death he was colonel in the corps of engineers. William Henry Swift, of Massachusetts, was of mixed Puritan and Huguenot stock. His father was an army surgeon, and a brother, General Joseph Gardner Swift, was the first graduate of West Point. William himself entered the military academy when but thirteen years of age (1813), and as his class graduated during his absence on Long's expedition, he was, under date of July 1, 1819, promoted to a lieutenancy in the artillery corps. The map of the country explored by the expedition was prepared by him. His later career was notable--he was engaged especially on coast improvements, fortifications, railroads, and canals; to him more than to any one else is attributed the success of the Illinois and Michigan canal. His collection of papers relative to the latter was, upon his death, presented to the Chicago Historical Society.--ED. [002] Allegheny arsenal is on the Pittsburg side of Allegheny River, opposite the upper end of McCullough's Island. The grounds lie between Thirty-ninth and Fortieth streets. The site was purchased in 1814; a wall inclosing the grounds was completed in 1829. The arsenal was for many years used in the manufacture of war materials, a force of twelve hundred men being employed there during the War of Secession. Since 1868 it has been used as a military post, and as a quartermaster's depot. There were recently (1904) discovered there the principal documents relating to the equipment of the Lewis and Clark expedition, which was largely outfitted therefrom.--ED. [003] Caprimulgus vociferus.--JAMES.