SCIENCE— ADVERTISEMENTS 



TOLMAN 



Theory of the Relativity 

 of Motion 



With Appendix 



A supplement to this work, written by the 

 author, has just been issued. Under the 

 title, 



Relativity Theories in Physics 



this Appendix gives a general description 

 of the nature of relativity, theories, to- 

 gether with brief discussions of Tolman's 

 theory of similitude or relativity of size, 

 of Einstein's theory, of the relativity of 

 uniform motion, and of Einstein's theory 

 of gravity and general relativity. 



1x4-242 pages (including Appendix). 

 Cloth, SI. 75. Carriage extra. Weight, 

 1^ pounds. 



Appendix only (paper), 25 cents. 



The University of California Press 



BERKELEY. CALIFORNIA 



Theory and Practice 



MILLIKAN: Mechanics, 

 Molecular Physics, and Heat. 



MILLIKAN and MILLS : 

 Electricity, Sound, and Light. 



These books provide for 

 intimate correlation be- 

 tween classroom discussion 

 and laboratory exercises. 

 Together they constitute 

 an up-to-date full - year 

 course. 



GINN AND COMPANY 



Boston New York Chicago London 

 Atlanta Dallas Columbus San Francisco 



A NEW WILEY BOOK 



Principles of Radio Communication 



By J. H. MORECROFT 



Associate Professor of Electrical Engineering, Columbia University 

 Assisted by A. PINTO and W. A. CURRY 



THIS BOOK deals with all phases of the Radio Art, going completely into 

 both theory and operation. The treatment is more thorough than is generally 

 given, and for this reason the book will have a wide appeal among workers in 

 this field, the importance of which is so rapidly increasing. 



The text of " RADIO COMMUNICATION" comprises 935 pages, 6 by 9 inches, 

 and contains 788 illustrations, many of which are reproductions of oscillographic records 

 of transient phenomena. All curves used to illustrate formulse are carefully executed 

 to scale and may be used as typical problems. The book is cloth-bound. $7.5() postpaid. 



Enter Your Order for a FREE EXAMINATION Copy 



JOHN WILEY & SONS, Inc. 



432 Fourth Avenue 



NEW YORK 



