NORMANDY.—The Commercial Handbook of Chemical Analysis:
Or Practical Instructions for the Determination of the Intrinsic or Commercial Value of Substances used in Manufactures, in Trades, and in the Arts. By A. Normandy. New Edition, Enlarged, and to a great extent rewritten. By Henry M. Noad, Ph.D., F.R.S., thick 12mo. $5.00
NORRIS.—A Handbook for Locomotive Engineers and Machinists:
Comprising the Proportions and Calculations for Constructing Locomotives; Manner of Setting Valves; Tables of Squares, Cubes, Areas, etc., etc. By Septimus Norris, M.E. New edition. Illustrated, 12mo. $1.50
NORTH.—The Practical Assayer:
Containing Easy Methods for the Assay of the Principal Metals and Alloys. Principally designed for explorers and those interested in Mines. By Oliver North. Illustrated. 12mo.
NYSTROM.—A New Treatise on Elements of Mechanics:
Establishing Strict Precision in the Meaning of Dynamical Terms: accompanied with an Appendix on Duodenal Arithmetic and Metrology. By John W. Nystrom, C.E. Illustrated. 8vo. $2.00
NYSTROM.—On Technological Education and the Construction of Ships and Screw Propellers:
For Naval and Marine Engineers. By John W. Nystrom, late Acting Chief Engineer, U.S.N. Second edition, revised, with additional matter. Illustrated by seven engravings. 12mo. $1.50