Telegraphy and Telephony.
Telegraph Engineering. For practising Telegraph Engineers and Engineering Students. It presents in a logical manner the subject of modern Land and Submarine Telegraphy from an Engineering viewpoint. E. Hausmann, E.E., Sc.D. Demy 8vo. 192 Illustrations. 12/6 net.
The Propagation of Electric Currents in Telephone and Telegraph Conductors. J. A. Fleming, M.A., D.Sc., F.R.S., Pender Professor of Electrical Engineering in the University of London. 3rd Edn. Revised. Demy 8vo. 21/- net.
Contents.—Preface. Mathematical Introduction. The Propagation of Electro-Magnetic Waves along Wires. The Propagation of Simple Periodic Electric Currents in Telephone Cables. Telephony and Telegraphic Cables. The Propagation of Currents in Submarine Cables. The Transmission of High-Frequency and Very Low-Frequency Currents along Wires. Electrical Measurements and Determination of the Constants of Cables. Cable Calculations and comparison of Theory with Experiment. Loaded Cables in Practice.
Toll Telephone Practice. J. B. Theiss, B.S., LL.B., and Guy A. Joy, B.E. With an Introductory Chapter by Frank F. Fowle, S.B. 14/- net.
Contents.—Rural Telephone Equipment. Toll Cut-in Stations. Toll Positions at a Local Switchboard. Toll Switching Systems. Small Toll Switchboards. Multiple-Drop Toll Switchboards. Multiple-Lamp Toll Switchboards. Toll Connections to Local Automatic Systems. Supervisory Equipment and Toll Chief Operator’s Desk. Toll Wire Chief’s Desk. Simplex Systems. Composite Systems. Phantom Lines. Test and Morse Boards. Small Test Panels. Line Construction. Electrical Reactions in Telephone Lines. Cross and Talk Inductive Disturbances. Methods of Testing. Toll Line Maintenance. The Telephone Repeater.
Radio-Telegraphy. C. C. F. Monckton, M.I.E.E. With 173 Diagrams and Illustrations. Extra Crown 8vo. 7/6 net.
Radiographic Technique. T. Thorne Baker, F.C.S., F.R.P.S., A.I.E.E. Demy 8vo. 208 pp. Illustrated. 15/-.
Contents.—The Scope of X-Ray Work. The Photographic Plate. The Storage and Handling of Plates. Intensifier Screens. Fluoroscopic Examination. Localisation by Radiography. The Dark Room and its Equipment. Intensification and Reduction. The Technique of the Photographic Print. Industrial Applications of the X-Rays. Analysis with the X-Rays. Appendix.
The Telegraphic Transmission of Photographs. T. Thorne Baker, F.C.S., F.R.P.S., A.I.E.E. With 66 Illustrations and Diagrams. Crown 8vo. 2/6 net.
Telegraphy, Aeronautics and War. Charles Bright, F.R.S.E., M.Inst.C.E., etc., Author of “Submarine Telegraphs,” “Imperial Telegraphic Communication,” etc. Demy 8vo. 16/- net.