NOTICES OF BOOKS. xm 



it-; results. The Brooks-Metcalf monograph will remain a standard work of reference on the 

 subject with which it deals, and the drawings which accompany it, although a little crude at 

 times, are so coloured as to facilitate ease of identification of the complex parts delineated. 



An Introduction to Physical Measurements. By Dr. F. Kohlrausch. Pp. 476. London: 



J. & A. Churchill, 1894. 



The original German edition of this work appeared in 1869, and was therefore one of 

 the very first manuals for use in the physical laboratory. In spite of its numerous competitors 

 at the present time, there can be no better proof of its merits than the fact that it still holds its 

 own as a laboratory guide ; the volume under notice being a translation of the seventh German 

 edition, and the third edition appearing in English. As is well known, the book is only 

 intended for use in actual practice, and contains clear and concise accounts, shorn of all 

 technical detail, of the apparatus and methods employed in a complete course of instruction. 



In the present edition new methods, such as those dealing with solutions, have been 

 added, but its main feature is the introduction of explanations and directions which refer 

 rather to investigation and research than to the practice necessary for students. 



A Text-Book of Magnetism and Electricity. By R. W. Stewart, D.Sc. (Lond.). Second 

 edition. Pp. 344. London : University Correspondence College Press. 



This book is written for students preparing for the Intermediate Science and less 

 advanced examinations of the University of London. Although it is constructed on the lines 

 of a "cram " book, it is only fair to say that it is one of the best of its kind. Under the 

 limitations laid down by the author, it is a clearly written and satisfactory introduction to 

 •electricity and magnetism. 



A Text-Book of Dynamics. By W. Briggs, M.A., LL.B., F.R.A.S., and G. H. Bryan, M.A. 

 Pp. 192 and xiv. London • University Correspondence College Press. 



This is a sound elementary exposition of the principles of dynamics, treated with the 

 minimum amount of mathematics, and illustrated by means of well-chosen examples and 

 phenomena familiar to the reader. 



