Graphic Method for Solving certain Questions in Arithmetic or Algebra. By G. L. Vose. Second edition, 28 illus., 62 pp., 18mo, boards. (New York, 1902.) 2s. net.

Problems in Electricity. A Graduated Collection comprising all branches of Electrical Science. By R. Weber. Translated from the French by E. A. O'Keefe. 34 illus., 366 pp., crown 8vo. (1902.) 7s. 6d. net.

MECHANICAL ENGINEERING
Steam Engines and Boilers, etc.

Engineers' Sketch Book of Mechanical Movements. By T. W. Barber. Fifth edition, 3,000 illus., 355 pp., 8vo. (1906.) 10s. 6d. net.

The Repair and Maintenance of Machinery. By T. W. Barber. 417 illus., 476 pp., 8vo. (1895.) 10s. 6d.

The Science of Burning Liquid Fuel. By William Newton Best. 100 illus., 159 pp. 8vo. (1913.) 9s. net.

Practical Treatise on Mill Gearing. By T. Box. Fifth edition, 11 plates, 128 pp., crown 8vo. (1892.) 7s. 6d.

The Mechanical Engineers' Price Book. Edited by G. Brooks. 176 pp., pocket size (6-1/2 in. by 3-3/4 in. by 1/2 in. thick), red leather cloth. 4s. net.

Safety Valves. By R. H. Buell. Third edition, 20 illus., 100 pp., 18mo, boards. (New York, 1898.) 2s. net.

Machine Design. By Prof. W. L. Cathcart.