HORSTMANN, H. C. and TOUSLEY, V. H. Modern Electrical Construc- tion. A reliable, practical guide for the beginner in electrical construc- tion, showing the latest approved methods of installing work of all kinds according to the safety rules of the National Board of Fire Underwriters. Illustrated. Leather...................cvvin. $1.50 INCANDESCENT ELECTRIC LIGHTING: A Practical Description of the Edison System, by H. Latimer. To which is added The Design and Operation of Incandescent Stations, by C. J. Field; a Description of the Edison Electrolyte Meter, by A. E. Kennelly; and a Paper on the Maximum Efficiency of Incandescent Lamps, by T. W. Howells. Fifth edition. Illustrated. 16mo, cloth. (No. 57 Van Nostrand’s Series.) .......... ee $0.50 INDUCTION COILS: How Made and How Used. Tenth edition. 16mo, cloth. (No. 53 Van Nostrand’s Science Series.). .............. $0.50 JEHL, FRANCIS. Member A. I. E. E. The Manufacture of Carbons for Electric Lighting and other purposes. A Practical Hand-book, giving a complete description of the art of making carbons, electros, etc. The various gas generators and furnaces used in carbonizing, with a plan for a model factory. Illustrated with numerous diagrams, tables, and folding plates. 8vo, cloth ........... $4.00 JONES, HARRY C. The Electrical Nature of Matter and Radioactivity, 12mo, cloth. 212 pp... o.oo nct, $2.00 KAPP, GISBERT, C. E. Electric Transmission of Energy and its Trans- formation, Subdivision, and Distribution. A Practical Hand-book. Fourth edition, revised. 12mo, cloth... ...................... $3.50 - —-— Alternate-Current Machinery. 19o pp. Illustrated. (No. g6 Van Nostrand’s Science Series.). ........... trina. $0.50. —— Dynamos, Alternators, and Transformers. Illustrated. 8vo, cloth ee $4.00 KENNELLY, A. E. Theoretical Elements of Electro-dynamic Machinery. Vol. I. Illustrated. 8vo, cloth. ............................%1.50 KINZBRUNNER, C. Continuous Current Armatures; their Winding and Construction. 8vo, cloth. 80 pp. 79 Illustrations....... net, $1.50 —— Alternate Current Windings; their Theory and Construction. 8vo, cloth. 80 pp. 89 Illustrations.......................... net, $1.50 LEVY, C. L. Electric Light Primer. A simple and comprehensive digest of all the most important facts connected with the running of the dynamo and clectric lights, with precautions for safety. For the use of persons whose duty it is to look after the plant. 8vo, paper. .$0.50 LOCKWOOD, T. D. Electricity, Magnetism, and Electro-telegraphy. A Practical Guide and Hand-book of General Information for Electrical Students, Operators, and Inspectors. Revised edition. 8vo, cloth. Profusely MMustrated. .......... $2.50 LODGE, PROF. OLIVER J. Signalling Across Space Without Wires: being a description of Hertz and his successors. Third edition. [llus-
trated. 8vo, cloth
