Power and its Transmission. A Practical Handbook for the Factory and Works Manager. By T. A. Smith. 76 pp., fcap. 8vo. (1910.) 2s. net.

Slide Valve Simply Explained. By W. J. Tennant. Revised by J. H. Kinealy. 41 illus., 83 pp., crown 8vo. (New York, 1899.) 2s. net.

Shaft Governors. By W. Trinks and C. Hoosum. 27 illus., 97 pp., 18mo, boards. (New York, 1906.) 2s. net.

Treatise on the Design and Construction of Mill Buildings. By H. G. Tyrrell. 652 illus., 490 pp., 8vo. (New York, 1911.) 17s. net.

Slide and Piston Valve Geared Steam Engines. By W. H. Uhland. 47 plates and 314 illus., 155 pp. Two vols., folio, half morocco. (1882.) £1 16s.

How to run Engines and Boilers. By E. P. Watson. Sixth ed., 31 illus., 160 pp., 8vo. (New York, 1913.) 4s. 6d. net.

Position Diagram of Cylinder with Meyer Cut-off. By W. H. Weightman. On card. (New York.) 1s. net.

Practical Method of Designing Slide Valve Gearing. By E. J. Welch. 69 illus., 283 pp., crown 8vo. (1890.) 6s.

Elements of Mechanics. By T. W. Wright. Eighth edition, 215 illus., 382 pp., 8vo. (New York, 1909.) 10s. 6d. net.