Hints to Young Engineers Upon Entering Their Profession. By Joseph W. Wilson. 8vo, paper, 20 cts.

Designing Belt Gearing. By E. J. Cowling Welch. 16mo, paper, 20 cts.

Tables of the Principal Speeds Occurring in Mechanical Engineering expressed in metres, in a second. By P. Keerayeff. Translated by Sergius Kern, M.E. 16mo, paper, 20 cts.

The French Polishers' Manual. By a French polisher. 16mo, paper, 20 cts.

Cleaning and Scouring. A Manual for Dyers and Laundresses, and for Domestic Use. By S. Christopher. 16mo, paper, 20 cts.

The Cooking Range. Why is it my cooking range does not work properly, and why so extravagant with fuel? By F. Dye. 16mo, paper, 20 cts.

The Gas Consumers' Handybook. By William Richards, C.E. 16mo, paper, 20 cts.

Turner and Fitters' Pocket Book. For calculating the change wheels for screws on a turning lathe and for a wheel cutting machine. By J. La Nicca. 16mo, paper, 20 cts.

Screw-Cutting Tables, for the use of Mechanical Engineers, showing the proper arrangement of wheels for cutting the threads of screws of any required pitch, with a table for making the Universal Gas Pipe Threads and Taps. By W. A. Martin. Paper, 20 cts.

Ornamental Penmanship. A Pocketbook of Alphabets for Engravers, Sign Writers and Stone Cutters, containing 32 pages of alphabets. Paper, 20 cts.

The Handy Sketching Book, for the use of Draftsmen and Engineers, containing cross-section paper to EXACT eighth of an inch, with useful tables. Bound in boards, per dozen, $2.50. Each, 25 cts.

The Kitchen Boiler and Water Pipes: Their arrangement and management—more especially their treatment during frost and how to avoid explosions. By H. Grimshaw. Second edition, illustrated, 8vo, paper, 40 cts.