A History of Electric Telegraphy to the year 1837. By J. J. Fahie. 35 illus., 542 pp., crown 8vo. (1889.) 2s. net.
Life as an Engineer: its Lights, Shades, and Prospects. By J. W. C. Haldane. New edition, 23 plates, 390 pp., crown 8vo. (1910.) 5s. net.
A Cornish Giant. Richard Trevethick, the father of the Locomotive Engine. By E. K. Harper. 12 illus., including 2 plates, 60 pp., 8vo, sewed. (1913.) 1s. net.
Philipp Reis, Inventor of the Telephone: a Biographical Sketch. By Prof. S. P. Thompson. 8vo, cloth. (1883.) 7s. 6d.
The Development of the Mercurial Air Pump. By Prof. S. P. Thompson. 43 illus., 37 pp., royal 8vo, sewed. (1888.) 1s. 6d.
HOROLOGY
Watch and Clock Maker's Handbook, Dictionary and Guide. By F. J. Britten. Tenth edition, 450 illus., 492 pp., crown 8vo. (1902.) 5s. net.
The Springing and Adjusting of Watches. By F. J. Britten. 75 illus., 152 pp., crown 8vo. (1898.) 3s. net.
Prize Essay on the Balance Spring and its Isochronal Adjustments. By M. Immisch. 7 illus., 50 pp., crown 8vo. (1872.) 2s. 6d.