RECENT BOOKS OROANICREAoENTs IN INORGANIC ANALYSIS.I b e ~ t Mdlllnn, Ph.G.,M.Sc., F.A.I.C. The BlakistonCo.. Philadelphia. 1941. xxiii 682 pp. 15 X 23 cm. $9.00. This is a monograph on the use of organic compounds as reagents in inorganic analysis and includes both qualitative and quantitative methods. The introductory section (24 pages) presentsfundamental theoriesand principles; then followsa glossary of organic reagents (195 pages); and finally a section (409 pages) on methads of procedure. An appendix (11 pages) gives a classified list of the reactive groupings of most of the known organic reagents, with examples of each type. About 225 organic reagents are described; their structure, reactive groupings, and the resulting compounds formed are shown graphically with about 580 formnlar. Approximately 230 qualitative and spot tests and 240 quantitative methods (colorimetric, gravimetric, and volumetric) are presented. The seusitivity, amount determinable, accuracy, and the interfering substances (with instructions for their elimination) are given whenever possible. Many references t o the original sources are Listed throughout the hook which greatly enhance its usefulness. The hook will beuseful to every analyst and a valuable addition to any chemical library. JOHNH. YOE
havior; IX. The Reactions of Acids and Bases with Neutral Substances-Three-Center Reactions; X , Reactions of the Double Bond. Many concepts are explained mare thoroughly than is usually done, and the hook is interestingly written. Points which are thought-provoking are raised. There are many correlations in the text that are either not t o be found elsewhere or are not as conveniently available. An example of the kind of correlation that should be interesting and useful to the organic chemist is the fit of acid strength of acids with a formula involving a set of inductive constants for various groups. I t will he worth while for anyone interested in theoretical organic chemistry, be he a student or a research worker in the field, to read the text. The book is made more useful by the inclusion of some fifty-five tahles which present various data such as bond energies, atomic radii, acid strengths, and relative rates of reaction of chlorides with iodids ion. The book will be difficultto readin several spats. The amount of mathematical explanation needed by different readers will, of course, vary, but on the whole it is the impression of the reviewer that the amount of wave mechanical material is too brief to give the reader much feeling for it if he doesn't already know it. Also there are a few places in the text where it is difficult to make out exactly what the authors mean. UNIVB.SITI 0. VI*DINI* In connection with such topics as acid strength, especially in C ~ n a ~ o r r ~ sVIPOLNIA vr~~~, the case of alkylsubstituted dibasic acids, the aldol condensation, the Cannizzaro reaction, and addition to the ethylenic linkage, T n e THEORYOB ORGANIC CHEMISTRY.AN ADVANCED COURSE. more or Less recent work in the literature might profitably have Gerald E. K . Branck, Ph.D.. Professor of Chemistry, and been quoted. I n connection with acid catalysis, the important Melvin Caluin, Ph.D., Instructor in Chemistry. University of point is not raised that the rate-determining step in an acidCalifornia. Prentice-Hall, Inc., New York City, 1941. xix catalyzed reaction might be reaction with a base. 523 pp. 49 figs., 55 tables. 15 X 23 cm. $4.00. Whether THE THeoRv oa ORGANICCHEMISTRY.AN ADThe theory of organic chemistry is clearly too large a subject VANCED C o m s ~ is suitable as the sole text in a theoretical orto be covered in a book of normal size. Also, although everyone ganic course depends on what is t o be stressed and the arrangewill amee that some tonics belonr in theoretical oreanic &emment of the curriculum at the institution in question. For " istry, there will be disagreement an others. The authors have students who receive the physical background in other courses given in their book a discussion of "electronic structural theory, much of the material in the text may be superfluous, and reaction and its application to organic chemistry" with particular em- mechanisms might be emphasized more than the authors do. phasis on resonance. On the other hand, for a course that stresses the physical side of The chapters of the book are titled: I , The Development of the subject and still gives an introduction to mechanisms, the Structural Chemistry; 11, Atomic Structure; 111, Molecular text is very well suited. Structure: IV. G r o u ~Interaction: V. Phvsical Prooerties:. VI.. S. WINSTEIN ~quilibri&-Acid strength; VI1. ' ~ n & g y~elaiionshipsin UNIV=ES1TY OP CAL~PORNIA Some Other Reactions; VIII. The Rate Factor in Chemical BeLO9 ANOBLBS, C*L,.O.NI*
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