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TOURNAL ooa CHE
fessor Reymond's interesting account of the earliest origins. S. R. POWERS Thermodynamics for Students of Chemistry. C. N. HINSHELWOOD, M.A.. Fellow and Tutor of Trinity College, Oxford. E. P. Dutton and Company, 181 pp. inNew York, 1926. ii dex. 11 diagrams. 12.5 X 18.5 cm. $1.80.
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This book contains chapters on the following topics: Introductory, Applications of the First Law of Thermodynamics, The Second Law of Thermodynamics and Carnot's Theorem. The Gibbs-Helmholtz Equation, Maximum Work and Free Enerpy, Applications of the Isothermal - Reversible Cyde, Entropy and Thermodynamic Fuuctian-Conditions of Equilibrium. The Foundations of the Phase Rule, The Problem of Chemical Combination. Entropy and Probability. The author begins his preface: "This book has been developed from lectures in which I have done what I can to make the fundamental ideas of thermodynamics as clear as possible, and particularly t o explain the methods by which the abstract general laws are brought t o bear upon the actual problems of physicsandchemistry." This object is certainly attained t o a very considerable degree. The author succeeds in making clear many of the fundamental ideas of thermodynamics, ideas which are simple enough in themselves, but which ordinarily seem to give many students of thermodynamics a great deal of trouble. The hook excels in this. respect, that i t devotes substantial attention to ideas which in many texts are frequently taken for granted or only briefly touched upon. Theauthor also makes a special feature of pointing out in a most admirable way the intimate interconnections between the laws of thennodynamics and the kinetic theory. The whole book is introductory in character, quite elementary. Very little quantitative information is presented, and no problems. I t should prove very h e l p
ful when used in combination with some other more advanced text. The student would "pet the general idea" of the subject from Hinshelwood's book and would then he ready to undertake the study of more detailed and more advanced treatments. EDWARD MACK.JR. Calculations of Quantitative Chemical F. HAMILTON, Analysis. LEICE~TRR Associate Professor of Analytical Chemistry, Massachusetts Institute of Technology and STEPHENG. SIMPSON,Instructor in Analytical Chemistry, Massachusetts Institute of Technology. Second edition, 1927. McGraw-Hill Book Company, Inc., New York. xxiii 239 pp. 2 figures. 14.5 X 21 em. $2.25.
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I n this textbook of chemical calculations, there is the expressed purpose of satisfying that need in quantitative analysis which is described in the preface t o the first edition. "Quantitative Analysis is a very practical branch of chemistry and a knowledxe of the chemical orincides involved and the acquirement of manipulative skill are of little practical value unless they are accompanied by an ability to compute and interpret results from analytical data, quickly and correctly." The authors realize that in a well-balanced course of instruction it is necessary to devote a portion of the time to stoichiometric principles and to the solution of practical and illustrative problems and yet there is the difficulty that too extensive instruction in chemical computations might require time which could be used more judiciously for the discussion of chemical principles. For this reason, the volume was prepared "in an attempt to attain the following objects: (1) t o allow the instructor t o devote more time in the class room t o the chemistry of quantitative analysis; (2) t o aid the student in grasping stoichiometric principles without extensive personal instruction; (3) to provide ample material for home assignments and quizzes; (4) to prepare the
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narily met with in analytical work. Problems to he worked by the student are included. Part 111, The Theory of Analytical Chemistry, 177 pages, gives in a simple manner the fundamentals of physical chemistry which are essential for a proper understanding of the methods involved in analytical procedure. I n Part IV, Special Topics, 87 pages, electrometric titrations, colorimetric methods, and iron and steel analysis are taken up. Part V contains various tables necessary in analytical work. Each chapter is marked with a subscript indicating the type of student for which i t is intended. Of a total of 69 chapters, 36 are intended for beginning students, 38 for the more advanced and 27 for the graduate student. Only three chapters, those mentioned in Part IV, arc for graduate students exclusively. I n addition to the section on calculations, questions and problems, together with references, are given a t the end of each chapter. Such subjects as the analysis of fuels, water, oils, and assaying are not treated. While certain procedures must of necessity be omitted and the number of optional methods limited, the hook as a whole is very well written and the subiect matter is presented in a clear and concise manner. Quantitative Anelysis. STEPHENPOPOPP. Those who have used the first edition will Ph.D. P. Blakiston's Son & Co., Phila- be pleased with the improved physical delphia. Second edition, 1927. xix appearance of the book as well as the 559 pp. 68figures. 1 5 x 2 3 cm. $4.00. changes and additions in subiect matter. D. C. LICHTENWALNER This edition has been considerably enlarged by the addition of twelve new chapters and many of the methods of proce- Physico-Chemical Geology. R. H. RASTALL. Longmans, Green & Co , New dure have been changed t o give greater York City, 1927. vii 248 pp. 13.5 orecision. The book is divided into four X 21.5 cm. $6 00. parts. Part I , Laboratory Directions, As its name implies, this book is an coverina 258 pages, contains a discussion of the balance, apparatus, and calibra- attempt t o show how the applicatio~lof tions and methods for analytical proce- the principles of physical chemistry t o the dures, together with an explanation of problems of geology has aided in correlatthe theory involved. ing and organizing an immense mass of Part 11, Calculations, covering 50 pages, data. The attempt is a success. Dr. takes up Errors and Computations and Rastall is t o be congratulated an the exthe methods of solving problems ordi- cellent fashion in which he has handled the
way t o more difficult problem work in physical chemistry and chemical engineering." The second edition follows the same general arrangement as the first edition. Chapters and problems on electrometric titrations and on equilibrium constants have been inserted. The descriptive matter has been expanded in several instances, especially in the section devoted to precision measures, calibration of weights, electrolysis, and indicators. Many -proMems have been added and the miscellaneous problems have been rearranged and classified under descriptive headings. Answers have been given to a number of problems which represent the various types of calculations and many problems have been given without answers. This arrangement benefits student and instructor alike inasmuch as those problems with answers serve as a basis for self instruction and those without answers offer material for home assignments and quizzes. The text represents an advance in the teaching of quantitative analysis since it offers a clear discussion of type problems from which the student may he expected t o grasp the principles of chemical calculations with less individual instruction. VILLIERSW. MELOCHE ~
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