GRUNER, M. L.—The Manufacture of Steel.

Translated from the French, by Lenox Smith, with an appendix on the Bessemer process in the United States, by the translator. Illustrated. 8vo, cloth 3 50

GUIDE TO WEST POINT and the U. S. Military Academy.

With maps and engravings. 18mo, flexible cloth 1 00

HALF-HOURS WITH MODERN SCIENTISTS.—Lectures and Essays,

By Professors Huxley, Barker, Stirling, Cope, Tyndall, Wallace, Roscoe, Huggins, Lockyer, Young, Mayer, and Reed. Being the University Series bound up. With a general introduction by Noah Porter, President of Yale College. 2 vols. 12mo, cloth, illustrated 2 50

HAMERSLY, LEWIS B.—The Records of Living Officers of the U. S. Navy and Marine Corps.

Compiled from Official Sources. Third edition. Cloth, 8vo. 2 50

HAMILTON, W. G.—Useful Information for Railway Men.

Sixth edition, revised and enlarged. 562 pages, pocket form. Morocco, gilt. 2 00