REVIEWS 



How to make | low-pressure | transformers | second edition | with additions | 

 by i Prof. F. E. Austin, Hanover, N. H. | [6 lines] | copyright 1915, 

 by F. E. Austin | Hanover, N. H. | Cloth, pp. 1-17. Price, $0.40. 



This small book, while of no value to engineers or advanced 

 students, gives full instruction for the construction of a small- 

 capacity experimental transformer which should be useful to all 

 young experimenters. 



J. C. Rockwell. 



Examples | in | alternating-currents 1 vol. I. | second edition | with additions | 

 for I students and engineers | by | F. E. Austin, B. S., E. E. | [5 lines] 

 ' I Hanover, N. H. | 1916 | Flexible leather, pp. 1-223. Price, $2.40. 



The volume of examples in alternating-currents with its illus- 

 crative problems and condensed tables should be an excellent 

 aid to students, as it covers the subject in a brief and concise 

 manner and links together theory and practice in a way not 

 found in the usual textbooks used for instruction. Engineers, 

 also, will find it very useful, particularly those who have only 

 occasional problems to solve which require mathematics, as 

 calculus and its applications are easily forgotten when seldom 

 used. 



J. C. Rockwell. 



Examples in magnetism | second edition | for students of | physics and engi- 

 neering I by 1 Professor F. E. Austin, B. S., E. E. | [5 lines] ] Hanover, 

 N. H. I 1916 I Flexible leather, pp. 1-90. Price, $1.10. 



The author has carefully laid his foundations for the subject 

 by reviewing briefly, but thoroughly, the necessary parts of 

 trigonometry and mechanics. He then presents his examples 

 worked out in full and enough of them to give the student a 

 good idea of the theory and application of magnetism. 



J. C. Rockwell. 



Directions for | designing, making, and { operating | high-pressure transformers 

 I by I Professor F. E. Austin | copyright 1914 by F. E. Austin | [6 lines] 

 I printed by | The Capital City Press ] Montpelier, Vt. | Cloth, pp. 

 1-46. Price, $0.65. 



The title of this book is misleading, as it treats of but a 

 small part of the considerations necessary in high-pressure 



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