Galvanic Circuit Investigated Mathematically. By G. S. Ohm. Translated by William Francis. 269 pp., 18mo. boards. Second ed. (New York, 1905.) 2s. net.
Elementary Practical Mathematics. By M. T. Ormsby. Second edition, 128 illus., xii + 410 pp., medium 8vo, (1911.) 5s. net.
Elements of Graphic Statics. By K. Von Ott. Translated by G. S. Clarke. 95 illus., 128 pp., crown 8vo. (1901.) 5s.
Figure of the Earth. By F. C. Roberts. 2 illus., 95 pp., 18mo, boards. (New York, 1885.) 2s. net.
Arithmetic of Electricity. By T. O’C. Sloane. Twentieth ed., 5 illus., 162 pp., crown 8vo. (New York, 1909.) 4s. 6d. net.
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. Third ed. (1902.) 7s. 6d. net.
MECHANICAL ENGINEERING
Steam Engines and Boilers, etc.