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methods and certain optional deteminations; and Part 111, 41 pages, t o "Hydrogen-Ion Determination." Certainly the most ~tnusualfeature of this little book is the arrangement and suggested method of presentation of that part of the subject matter devoted to volumetric analysis. The student is directed to prepare, as the starting point, approximately 0.1 N solutions of hydrochloric acid, sodium hydroxide, axalic ' ferrous acid, potassium oermanxanate. . ammonium sulfate, potassium dichromate, sodium thiosulfate, iodine, sodium arsenite, potassium thiocyanate, and silver nitrate. He then determines the milliliter ratios between successive pairs of the solutions, the "chain" being closed by the titration of the silver nitrate with the hydrachloric acid. Two of the solutions are then standardized, normality factors calculated for all solutions in the chain from each set of data, and each solution then employed for the analysis of a t least one unknown. Part 11, the very brief section devoted t o gravimetric methods, presents a few simple and well-chosen determinations, suitable for beginners. Part I11 is devoted t o a somewhat detailed discussion of the subject of hydrogen-ion concentration, and directions are given for the determination of the pH values of both buffered and unbuffered solutions by the colorimetric method. Throughout the text, practically every exercise is followed by the data of a "model experiment" and calculations for each individual sample are shown in full. A few well-selected questions and simple problems conclude each exercise. This little book presents the elementary principles of quantitative analysis in such clear and simple fashion that they should readily be grasped by any student who has had a good course in general chemistry. The explanations are so lucid, the model experiments so numerous, and the data calculated in such detail, that some might argue that there is little left for the student t o do save fallow directions.
JULY,
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On the other hand, it can hardly be recommended, in the reviewer's opinion, for a course in the fundamentals of quantitative analysis. The treatment of the theoretical principles which are the basis of all quantitative methods is brief and fragmentary, and procedures, too numerous t o mention individually in a brief review, which might be considered satisfactory for elementary work an the part of non-chemistry majors become inaccurate and unreliable when considered from the standpoint of precise work. The dangers inherent in the standardization of a chain af solutions as described by the authors are well known and outweigh, in the opinion of the reviewer, whatever pedagogical advantages the procedure may possess. The form and organization of the material is excellent and the book is unusually free from typographical errors. Teachers who have occasion to offer brief elementary courses in quantitative analysis should hy all means examine this interesting and very teachable little baok.
Chemische Analyse, XXX Band. fechenverfahren und Rechenhilfsmittel rnit Anwendungen auf die Analytische Chemie. Pnoa. DR. O l ~ oLIESCHE. BO~TGER, Editor. Ferdinand WILHELM Enke Verlag. Stuttgart, 1932. viii 203 pp. 24 Figs. 16.5 X 25 cm. Unhound 20 R.M., bound 22 R.M.
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The program of the hook is outlined in an introductory section in which it is pointed out that the baok has been written from the viewpoint of self study as well as for use in classes, that it is intended to achieve an inspiring and methodically instructive effect, and that the book is to be of aid in the province of figures and the simple numerical relations which are expressed in fundamental chemical laws. The author states that if certain ~ o r t i o n s appear to be elementary, his excuse is that difficulties in understanding often have their foundations in confusion directly concerning elementary things.
VOL.9, NO. 7
RECENT BOOKS
The main portion of the book is divided into four sections. I n Part I are discussed simple calculations, such as addition, subtraction, multiplication, and division, with numerous examples. Part I1 covers special aids in multiplication and division such as logarithms, the logarithmic sIide.de and the calculating machine. Part I11 deals with chemical calculations and their algebraic formulation and covers simple gravimetric analysis, volumetric analysis, indirect analysis of two- and three-component systems, critical examination of errors, calculations of analyses of complex mixtures such as rocks, omplea salts, and water, and the calculation of gases. Part IV deals with nomography and includes a review of the literature. The subject matter of the book should certainly be given careful consideration by all teachers of courses in stoichiometry. Its use as a textbook will necessarily be limited t o classes that have had a thorough grounding in German. G. E. F. LUNDELL
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form of expression and subject matter, which greatly improve the text and bring i t down t o date. Part I (323 pages), which is devoted t o the open-chain compounds, begins with the usual chapter on "Composition, Purification and Analysis of Organic Compounds and Deduction of Formulae." followed by chapters on hydrocarbons, halogen derivatives, etc., with only slight differences in the order and number of chapters from the older edition. I n contrast with some of the recent American texts, no reference is made t o the electronic theory in explaining organic reactions. What is more surprising, however, is that the Genevaiystem of nomenclature is wholly unused. The chapter on carbohydrates (24 pages) is unduly shortened, owing t o the purpose of the authors t o discuss this subject in more detail in Part 111. I n this connection i t seems unfortunate not to devote some attention t o the space relationship of the sugars, the oxide formula, etc., since many students will never see Volume 111. Part I1 continues with homocyclic compounds, t o which 170 pages are devoted. As a minor point, Ladenburg Perkin and Kipping's Organic Chemistry, and Noltiag's method of proof of the Parts I and I1 (Entirely new edition). equivalence of the sin hydrogens in benF. STANLEYKIPPIm,University Col- zene muld well have been included in the lege. Nottingham, and F . BARRYKIP- author's discussion of that subject (p. PING, Trinity College, Cambridge. J. B. 351). Lippincatt, Philadelphia. Printed in Under heterocyclic derivatives only Great Britain by W. & R. Chambers, nitrogen-containing rings are mentioned; Ltd.. London and Edinburgh. 1932. then follow chapters on the alkaloids, vi 614 xxiv pp. 24 Figs. 12.5 amino acids, and purine bases; on some X 18.8 cm. 83.50. important components of animals and To the older generation of organic chem- plants and dyes, ending with a brief desaiption of methods for the identificaists the name, "Perkin and Kipping's Organic Chemistry," is very familiar as tion of organic compounds. One valuable a much-used text, but one that has been feature of the work is the careful aoss-indexing of allied material, and the sumlargely displaced owing t o lack of revision. Since the lamented death of the great maries that are found a t the end of most master of synthetic chemistry, W. H. of the chapters an the aliphatic series. The author very justly remarks: Perkin, this new edition has been edited by the junior author, assisted by F. Barry "Without a thorough course of laboratory 'Ripping. While the bulk of the material work no sound foundation can be laid, remains the same as in the older edition, and an ill-balanced accumulation of facts many changes have been made both in is the result. For this reason the prepare
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