and electric phenomena, the direction of thermodynamical processes, and limitations of thermodynamics are topics which complete the text. Appendix I contains a comparative table of thermodynamical notations and there is a subject index.
The main feature of the book is the new angle of approach. Because of this it warrants close examination by teachers as well as by those whose daily activities are in llne with the subject matter.
R. H. OPPERMANN.
ELECTRICAL OCCUPATIONS, by Lee M. Klinefelter. 227 pages, illustrations, 13.5 )< 20 cms. New York, E. P. Dutton and Company, Inc., 1937 . Price $2.00. It is not very often the case that boys in high school look forward to what is in store for them after graduation. The young mind, if left to itself, generally lacks the ability to definitely plan future activities over long periods, i.e. to prepare for the "long pull" with respect to lifetime occupations. This is probably due to having had no experience and the absence of a guide or other means of assistance. It is true that some boys are fortunate enough to be in a position to follow in their father's business or to have a college education that may be in line with their tendencies. All boys, however, need a guiding hand in the way of encouragement and method in the selection of a lifetime occupation.
This book surveys the possibilities for boys in the electrical industry. Based on the thought that happiness in work is found in the natural inclination toward it, the author gives in the form of a narrative a worth while plan of attack on the problem. The story is written around an average boy in high school whose father is doubtful as to the possibility of a college training. In the beginning it is assumed that the boy has a liking for electrical work. There is no question raised regarding the reason for this liking--whether it be only because of observance of spectacular electrical operations and developments or whether the interest be genuine enough to carry through the difficult periods of a lifetime occupation. In this respect, the plan presented may be classed as a test, for it will bring out the answer.
After carefully weighing all of the advantages of positions in general, the boy and his father set out to investigate different positions in the electrical industry both for the high school graduate and the college trained engineer. They hear the stories of those who are employed as engineers and workers in the electric power supply business, the telephone, the radio, and the electric storage battery business, electrical drafting, motion picture projection, welding, and opportunities in the U. S. Army and Navy. Very pertinent information is found out about each field. This includes the nature of the work, how much it pays, opportunities for advancement, regularity, age limits, education required and how it may be obtained, and other advantages such as hours of work, pensions, social position etc.
The book is as much for parents as it is for boys. It is valuable not only for boys inclined to electrical studies but for others as well, as it offers a method for the solution of a very important problem that confronts all. R. H. OPPERMANN.