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fessor Reymond's interesting account of the earliest origins. S. R. P o m n s 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 Thermodl~namic 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
