Aid Book to Engineering Enterprise. By E. Matheson. Third edition, 916 pp., 8vo, buckram. (1898.) £1 4s.

Office Management. A handbook for Architects and Civil Engineers. By W. Kaye Parry. New impression, 187 pp., medium 8vo. (1908.) 5s. net.

Commercial Organization of Engineering Factories. By H. Spencer. 92 illus., 221 pp., 8vo. (1907.) 10s. 6d. net.


PHYSICS
Colour, Heat and Experimental Science

The Entropy Diagram and its Applications. By M. J. Boulvin. 38 illus., 82 pp., demy 8vo. (1898.) 5s.

Physical Problems and their Solution. By A. Bourgougnon. 224 pp., 18mo, boards. (New York, 1897.) 2s. net.

Heat for Engineers. By C. R. Darling. Second edition, 110 illus., 430 pp., 8vo. (Finsbury Technical Manual.) (1912.) 12s. 6d. net.

The Colourist. A method of determining colour harmony. By J. A. H. Hatt. 2 coloured plates, 80 pp., 8vo. (New York, 1908.) 6s. 6d. net.