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LABOEATOEY AND FACTORY TESTS IN ELECTRICAL 

 ENGINEERING. By GEORGE F. SEVER and FITZHUGH TOWNSEND, 

 Second Edition. Thoroughly revised. Demy 8vo. 282 pages. 

 10s. 6d. net. 



This book represents the laboratory work required in the Electrical Engineer- 

 ing Course at Columbia University. It is intended to serve as a text-book for 

 the use of students, but furthermore it may be found useful by those who are 

 engaged in the electrical profession. 



RADIO-TELEGRAPHY. By C. C. F. MONCKTON, M.I.E.E. 



With 173 Diagrams and Illustrations. Extra Crown 8vo. 6a. net. 



CONTENTS : Preface. Electric Phenomena. Electric Vibrations. Electro- 

 Magnetic Waves. Modified Hertz Waves used in Radio-Telegraphy. 

 Apparatus used for Charging the Oscillator. The Electric Oscillator: 

 Methods of Arrangement, Practical Details. The Eeceiver : Methods of 

 Arrangement, The Detecting Apparatus, and other details. Measurements 

 in Radio-Telegraphy. The Experimental Station at Elmers End : Lodge- 

 Muirhead System. Radio-Telegraph Station at Nauen : Telefunken 

 System. Station at Lyngby : Poulsen System. The Lodge-Muirhead 

 System, the Marconi System, Telefunken System, and Poulsen System. 

 Portable Stations. Radio-Telephony. Appendices : The Morse Alphabet. 

 Electrical Units used in this Book. International Control of Radio- 

 Telegraphy. Index. 

 Nature. "A very interesting and valuable book." 



MATHEMATICS 



THE CALCULUS AND ITS APPLICATIONS. A PRACTI- 

 CAL TREATISE FOR BEGINNERS, ESPECIALLY ENGINEERING 

 STUDENTS. With over 400 Examples, many of them fully worked 

 out. By EGBERT GORDON BLAINE, M.E., Assoc.M.Inst.C.E. 

 Lecturer at the City Guilds' Technical College, Finsbury, London, 

 E.G. Author of "Hydraulic Machinery," "Lessons in Practical 

 Mechanics," " The Slide Rule," etc. Crown 8vo. 4s. Qd. net. 



The difficulties which beset the beginner are fully explained, and the principles 

 of the differential and integral calculus, and differential equations, are clearly 

 set forth in the simplest language ; each rule being illustrated by practical 

 examples. Applications of the calculus to problems in engineering and physics 

 form a feature of the work, which concludes with an up-to-date chapter on 

 Harmonic Analysis, of special interest to electrical engineers and students of 

 electro-technics. 



ENGINEERING 



ENGINEEEING WOEKSHOPS, MACHINES AND PEO- 

 CESSES. By P. ZUR NEDDEN. Translated by JOHN A. DAVEN- 

 PORT. With an Introduction by SIR A. B. W. KENNEDY, LL.D., 

 F.R.S., M.Inst.C.E., M.Inst.M.E. Plates. DemySvo. 6s.net. 



A handbook of workshop practice for the young engineer. It fills a gap in our 

 books for the practical training of engineers. 



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