GAS AND OIL ENGINES.

The Theory of the Gas Engine. By D. Clerk. Edited by F. E. Idell. Third edition, 19 illus. 180 pp. 18mo, boards. (New York, 1903) net  20
The Design and Construction of Oil Engines. By A. H. Goldingham. Second edition, 108 illus. 255 pp. crown 8vo. (New York, 1904) net  66
Gas Engine in Principle and Practice. By A. H. Goldingham. 107 illus. 195 pp. 8vo, cloth. (New York, 1907) net  66
Practical Hand-Book on the Care and Management of Gas Engines. By G. Lieckfeld. Third edition, square 16mo. (New York, 1896)  36
Elements of Gas Engine Design. By S. A. Moss. 197 pp. 18mo, boards. (New York, 1907) net  20
Gas Engines and their Troubles. By E. W. Roberts, with chapters on the Design and Construction of Launches, by Prof. W. F. Durand. 38 illus. 143 pp. crown 8vo. (New York, 1903) net  46
Gas and Petroleum Engines. A Manual for Students and Engineers. (Finsbury Technical Manual.) By Prof. W. Robinson. Third edition in preparation