SLOANE, T. O'CONOR. Elementary Electrical Calculations.

A Manual of Simple Engineering Mathematics, covering the whole field of Direct Current Calculations, the basis of Alternating Current Mathematics, Networks, and typical cases of Circuits, with Appendices on special subjects. 8vo., cloth. Illustrated. 304 pp Net, $2.00

Third Edition. 236 illustrations. 5 3/4 x 8 3/4, cloth, 476 pp. Net $2.60

Third Edition, 108 illustrations. 5 1/4 x 8 3/4, cloth, 322 pp Net, $2.00

The Transmission and Distribution of Electric Power by Continuous and Alternating Currents. With a Section on the Applications of Electricity to Mining Work. Second Edition. Illustrated. 8vo., cloth, 411 pp Net, $4.00

Fully Illustrated. 8vo., cloth, 214 pp Net, $3.00

Illustrated. 8vo., cloth. (Van Nostrand's Westminster Series.) Net, $2.00

Edited, with Preface, by T. Commerford Martin. Folding Plate and Numerous Illustrations. 16mo., cloth, 241 pp. (No. 109 Van Nostrand's Science Series.) 50 cents

With numerous Tables, Formulae, and two large Instruction Plates. Fifteenth Edition, revised. Illustrated. 5vo., cloth, 462 pp Net, $2.00