Furnace Draft: its Production by Mechanical Methods. By W. W. Christie. 5 illus., 80 pp., 18mo, boards. Second edition. (New York, 1906.) 2s. net.

The Stokers’ Catechism. By W. J. Connor. 63 pp., limp. (1914.) 1s. net.

Treatise on the use of Belting for the Transmission of Power. By J. H. Cooper. Fifth edition, 94 illus., 399 pp., demy 8vo. (New York, 1901.) 12s. 6d. net.

The Steam Engine considered as a Thermo-dynamic Machine. By J. H. Cotterill. Third edition, 39 diagrams, 444 pp., 8vo. (1896.) 15s.

Fireman’s Guide, a Handbook on the Care of Boilers. By K. P. Dahlstrom. Eleventh edition, fcap. 8vo. (S. & C. Series, No. 16.) (New York, 1906.) 1s. 6d. net.

Belt Driving. By G. Halliday. 3 folding plates, 100 pp., 8vo. (1894.) 3s. 6d.

Worm and Spiral Gearing. By F. A. Halsey. 13 plates, 85 pp., 18mo, boards. Second ed. (New York, 1911.) 2s. net.

Commercial Efficiency of Steam Boilers. By A. Hanssen. Large 8vo, sewed. (1898.) 6d.

Corliss Engine. By J. T. Henthorn. Third edition, 23 illus., 95 pp., crown 8vo. (S. & C. Series, No. 23.) (New York, 1910.) 1s. 6d. net.

Liquid Fuel for Mechanical and Industrial Purposes. By E. A. Brayley Hodgetts. 106 illus., 129 pp., 8vo. (1890.) 5s.