Molesworth.—Pocket-Book of Useful Formulæ and Memoranda for Civil and Mechanical Engineers. Pocket-book form $1 00
Moore.—The Universal Assistant. A Handbook of 1,000,000 Industrial Facts, Processes, Rules, Receipts, etc. With 500 Engravings. 12mo. $2 50
Morris.—Easy Rules for the Measurement of Earthworks by means of the Prismoidal Formula. By Elwood Morris, C.E. 8vo. $1 50
Morton.—The System of Calculating Diameter, Circumference, Area, and Squaring the Circle. 12mo. $1 00
Napier.—A System of Chemistry applied to Dyeing. By James Napier. 8vo. $5 00
Napier.—Manual of Electro-Metallurgy. 8vo. $1 50
Neville.—Hydraulic Tables, Co-Efficients, and Formulæ for Finding the Discharge of Water from Orifices, Notches, Weirs, Pipes, and Rivers. Illustrated. 8vo. $3 50
Newbery.—Gleanings from Ornamental Art of every Style. By R. Newbery. 100 pl. 4to. $12 50
Nicholson.—A Manual of the Art of Bookbinding. By Jas. B. Nicholson. Illustrated. 12mo. $2 25
Nicholls.—The Theoretical and Practical Boiler-Maker and Engineer’s Reference Book. By Samuel Nicholls. Illustrated. 12mo. $2 50