Outlines of Physical Chemistry. 14th edition (Senter, George)

subject. The second half of the book is concerned with piem-chemistry, or the iduence of ... intended as a reference book for the expert. ... The subj...
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VOL.4, NO. 4

mesentation of this verv worthwhile subject. The second half of the book is concerned with piem-chemistry, or the iduence of very DrrressuIeS on volume, solubility, . hizh . . etc. The reviewer was not so much interested in this subject because the parts which were easily digestible were the experiments run to show the effect of pressure and comparison of this effect with the calculated etfect obtained by the utilization of some thermodynamic equation such as the Clapeyran-Clausius equation. The results agreed very nicely with the calculations as would be expected. The apparatus used, however, was most ingeniousand i t is easily seen how a student would thoroughly enjoy himself in this line of investigation if he had the opportunity to work in Dr. Cohen's laboratory and use this very elaborate and very interesting apparatus. The entire b w k is given over t o two fields of specialized research but it is, nevertheless, both worthwhile and entertaining to the ordinary reader because the author has allowed some of his own c h a m inp personality to appear within the lines.

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and he found this little book extremely useful in making preparation for more advanced material given in lectures upon the subjects treated. The book is not intended as a reference book for the expert. but as a textbook for the beginner, who bas to "build a ladder from ignorance to knowledge." The present edition contains some material not before presented, or, a t least not so well. For example, one finds something on Atomic Strudure, and wishes there were more. The author could well have made tbis the subject of a chapter. At the end is found a list of "Problems and Questions" which is good, but which might well he extended. Problems come next t o laboratory work in driving home the principles. One of the strong points of the book has always been the "Practical Illustrations" given a t the ends of the chapters. These suggest a fine line of lecture or laboratory experiments. The press-work is good, hut the binding does not seem quite so substantial as did that of the first edition. All in all tbis is a fine little text which, for elementary work, would be hard t o equal. W. H. CHAPIN Outlines of Physical Chemistry. G e o n ~ s SENTER. Principal and Head of the Chemistry Department, Birkbeck Col- Lecithin and AUied Substances: the Lipins. Hucn MACLEAN, M.D., D.Sc., lege (University of London). D. Van Nostrand Company, New York City. AND IDA SMEDLEYMACLEAN.DSC., 421 pp. 14th edition, 1926. rx F.I.C. Longmans, Green & Ca., New 9.5 X 15 cm. 46 figures. $3.00. York City. Second edition, 1927. vii 220 pp. 38 tables. 15.5 X 24.5 em. The first edition of this hook appeared $3.75. in 1908, and made a good impression a t This treatise is a new edition of one of once. The reason for this was the fact that the author considered i t wise to the units of the series of "Monographs on present the general principles of the sub- Biochemistry" edited by R. H. A. Plimmer ject, and not t o stress any particular and F. G. Hopkins. The subject-matter theory or slant of his own. This method of the text is substantiated by an exof treatment was very much favored also haustive bibliography consisting of 655 by the fact that the book was written in a references and is distributed under the very clear and lucid style, entirely suitable following chapter titles: Subject Page for the beginner. At the time of its first C h a ~ t e r appearance the writer of this review was I. Introduction and Nomenclature 1 studying for the doctorate in chemistry, 11. The Chemistry of the Phospho-

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