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Recent Books
Principles of Chemistry. JOSEPH H. ROE. Ph.D., Professor of Biochemistry, George Washington University Medical School. Third edition. The C. V. Mosby Co., St. Louis, Mo., 1932. 486 pp. 39 Fig. 13 X 20 cm. $2.50.
lar group of students, it might well be used for supplementary reading in high-school or college work. C. E. WHITE
This book includes laboratory experi-. ments as well as the theoretical material. The number of pages devoted to theory are 320 and t o experiments 136. Of the latter about 50 are left blank for notes. [For a review of the second edition, see J. Cnena. EDUC.,7,216-7 (Jan., 1930).1 It is written t o provide an elementary course, primarily for nurses, who do not expect t o pursue more advanced work in chemistry. The Erst part covers in a very brief way the material usually considered in the first semester of the ordinary college course. The remainder, about one-third, is devoted t o organic chemistry. For those who have used previous editions it might be well t o state that the book now has chapters on the periodic law, the structure of matter, oxidation and reduction. and sections an the combining laws and ionization in relation t o electron structure. The chapter on foods has been carefully revised. The organic part is devoted mainly t o topics of interest t o nurses as food, blood, milk, and metabolism. In a hook of this kind it is very difficult t o say what should be included. The author has chosen to devote only three pages t o the halogens and six t o the metals and their compounds. The laboratory part is a series of simple experiments, followiug the same order as the theoretical part, upon materials discussed. It is unfortunate that the publishers did not give more attention t o the diagrams. Some of these would be much more attractive if drawn by an expert. The book is well written. The author's style is pleasing and the subject matter is presented in an attractive manner. I n addition t o being a good tent for a particu-
Laboratory Manual to Accompany Introductory General Chemistry. HAROLD G. DIETRICH AND ERWINB. KELSEY. Assistant Professors in Chemistry, Yale University. The Macmillan Co., New 158 73 pp. York City, 1932. x 17 Fig. 14 X 22 em. $1.00.
u~m~xssr OF r M*ny~mo C O L ~ OPARR, B MD.
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As stated in the preface, the manual is designed t o accompany Brinkley's "Introductory General Chemistry" and yet is capable of being adapted t o the usual course in elementary chemistry. I n recognition of the trend toward qualitative analysis in connection with general chemistry courses, a section on "elementary qual+tive analysis" is included, about one-third of the book being devoted t o it. The number of experiments devoted t o any subject is, in general, more than a n he intelligently perfarmed in the usual time allotted. A selection is therefore possible. I n most cases a group of related experiments is preceded by an introductory paragraph, pointing out the purpose of the experiments in the group, and followed by a list of review questions. Except in a few cases. the experiments are of the same general type found in laboratory manuals of general chemistry. I n the demonstration of electrical conductivity, a voltmeter is used instead of the usual lamp. The set-up is especially good and makes possible a more accurate difierentiation between M e r e n t types of electrolytes. I n general the experiments are well selected and clearly written so that students should have no trouble in following directions. Certain experiments are inserted, however, for which no directions are given. This should be of especial 20115
