LIST OF WORKS ON ELECTRICAL SCIENCE. 5 



GEAR, H. B. and WILLIAMS, P. F. Electric Central Station Distribution 

 Systems. Their Design and Construction. 139 illustration. 12mo., cloth. 

 352 pp Net, $3.00 



GORE, GEORGE. The Art of Electrolytic Separation of Metals (Theoretical and 

 Practical). Illustrated. 8vo., cloth, 295 pp Net, $3 . 50 



GRAY, J. Electrical Influence Machines: Their Historical Development and 

 Modern Forms. With Instructions for making them. Second Edition, 

 revised and enlarged. With 105 Figures and Diagrams. 12mo., cloth, 

 296 pp $2.00 



GROTH, L. A. Welding and Cutting Metals by Aid of Gases or Electricity. 124 

 illustrations. 8vo., cloth, 280 pp Net, $3.00 



HALLER, G. F. and CUNNINGHAM, E. T. The Tesla High Frequency Coil; its 

 ronstruction and uses.56 illustrations 5x7^, cloth, 130 pp $1 -25 



HAMMER, W. J. Radium, and Other Radio Active Substances; Polonium, Actin- 

 ium, and Thorium. With a consideration of Phosphorescent and Fluo- 

 rescent Substances, the properties and applications of Selenium, and the 

 treatment of disease by the Ultra- Violet Light. With Engravings and 

 Plates. Svo., cloth, 72 pp $1 .00 



HASKINS, C. H. The Galvanometer and its Uses. A Manual for Electricians 

 and Students. Fifth Edition, revised. Illus. 16mo., morocco, 75 pp. . .$1 .50 



HAWKINS, C. C. and WALLIS F. The Dynamos. Its Theory Design and Manu- 

 facture. Fifth Edition, rewritten, revised and enlarged. Two volumes, 594 

 illustrations. 8vo., cloth, 1135 pp Net, $5.50 



HAY, ALFRED. Principles of Alternate-Current Working. Second Edition. Illus- 

 trated. 12mo., cloth, 390 pp $2 . 00 



Alternating Currents ; their theory, generation, and transformation. Second 



Edition. 1178 Illustrations. 8vo., cloth, 319 pp Net, $2.50 



An Introductory Course of Continuous Current Engineering. Illustrated. 8vo., 



cloth, 327 pp Net, $2.50 



HEAVISIDE, 0. Electromagnetic Theory. Two volumes with Many Diagrams. 

 8vo., cloth, 1006 pp. Each vol Net, $5 .00 



HEDGES, K. Modern Lightning Conductors. An illustrated Supplement to the 

 Report of the Research Committee of 1905, with, with notes as to methods 

 of protection and specifications. Illustrated. Svo , cloth, 119 pp. Net, $3.00 



HOBART, H. M. Heavy Electrical Engineering. Illustrated. 8vo., cloth, 338 

 pp Net, $4.50 



Electricity. A text-book designed in particular for engineering students. 



115 illustrations. 43 tables. 8vo., cloth, 266 pp Net, $2 .00 



Design of Static Transformers. 100 Illustrations, 8vo., cloth, 190 pp., 



Net, $2.00 



Electric Trains. 88 Illustrations. 6x9, cloth, 220 pp Net, $2.50 



Electric Propulsion of Ships. 44 Illustrations. 6x9, cloth, 167 pp. . Net, $2.00 



