Last Poems. By Elizabeth Barrett Browning. With a Memorial by Theodore Tilton. New York. James Miller. 32mo. pp. 242. 75 cts. Manual for Engineer Troops. Consisting of, I., Ponton Drill; II., Rules for Conducting a Siege; III., School of the Sap; IV., Military Mining; V., Construction of Batteries. By Captain J.C. Duane, Corps of Engineers, U.S. Army. New York. D. Van Nostrand. 12mo. pp. 275. $2.00. Our Flag. A Poem in Four Cantos. By F.H. Underwood. New York. G. W. Carleton. 16mo. paper, pp. 41. 25 cts. A Treatise on Military Law and the Practice of Courts-Martial. By Captain S.V. Benét, Ordnance Department, U.S. Army: late Assistant Professor of Ethics, Law, etc. Military Academy, West Point. New York. D. Van Nostrand. 8vo. pp. 377. $3.00.