130 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS the end of Part 3 are well described in several general books on ion exchange and might have been deleted. However, the inclusion of this material will probably be wel- comed by those workers in bio- chemistry who are totally 'unfamil- iar with ion exchange. The chapters on the separations and chromatogra. phy of amino acids, peptides, proteins, nucleic acids and their derivatives, and carbo- hydrates deserve special mention because of their thoroughness. Each chapter has an excellent bibliography. The book will be a "must" for most workers active in biochemical research.--RoBERT KUNIN, Rohm & Haas Co. PURITY CONTROL BY THERMAL ANALYSIS, edited by W. M. Stair. Elsevier Publishing Co., Amster- dam, D. Van Nostrand Co., Inc., Princeton, U.S. Dist. s•ze 91/4 X 61/4 inches, indexed and illustrated. Price $4.75. This book is a collection of sixteen papers which were delivered at the International Symposium on Purity Control by Thermal Analy- sis held at Amsterdam in 1957. The papers cover theory, applica- tions and apparatus for thermal analysis. Two of the papers are in German however, all have a compendium at the end in English, French and German. The book includes a digest of discussions listing the participants. The theoretical papers begin with a discussion of the mechanisms of melting and the formation of solid solutions. This is followed by a discussion of the behavior of highly branched hydrocarbons in the solid state. One of the theoretical papers is concerned with some of the factors which govern the choice of method for purity determinations by cryoscopy. The editor's paper dis- cusses the errors occurring in the determination of temperature-heat content curves. Three of the papers deal with the calculations and accuracy of cryoscopic data. Papers on applications of thermal analysis include: determination of pur!ty of benzene, melting point purity determinations, thermal anal- ysis of normal alkanes, and freezing point and heating curve behavior for an organic reciprocal salt pair system. Two papers are concerned with experimental methods and evaluation of constants for the determination of purity by cryos- copy. The three papers on apparatus described the equipment and elec- trical circuits for an automatic adiabatic low temperature calorim- eter, a simplified calorimeter for the precise determination of purity, and an automatic apparatus for the determination of melting curves. This book should prove helpful to those concerned with the analy- sis of pure substances from a scientific as well as a quality control consideration. It also serves as a good basis of comparison with other methods of analysis such as chroma- tographic and dilatometric.-- MORRIS J. ROOT, G. Barr and Co. TEXTILE CHEMICALS AND AUXIL- IARIES, edited by H. C. Speel and E. W. K. Schwarz. Reinhold Pub- lishing Corp., New York 22, N.Y. 545 pages, size 91/4 X 6 inches, illustrated and indexed. Price $13.50. This second revised edition has an additional editor, E. W. K. Schwarz, over the one editing the original edition. It also contains market research data, so important in today's chemical progress.

BOOK REVIEWS 131 The material appears to be thor- oughly revised and brought up to date. There is a generous use of trade names, so helpful under the present marketing conditions. Longl. ey and Hansen's chapter on surfactants fails to recognize orig- inal workers in the fields they cover. There is an inconsistency in type used for the heading of the dif- ferent groups of cationic finishes on page 399. The various chapters seem quite adequate. Coverage .of respective material gives every impression of thoroughness. Some chapters, as always, seem better than others, in an effort to which a number con- tributed. A valuable tool for those in the textile and related industries, as well as for cosmetic chemists who have utilized so many ideas from textile practice to thei• own in- dustry needs.--M. G. rENAVARRE. TEXT-BOOK OF PHARMACEUTICAL CHEMISTRY, Sixth Edition, by J. E. Driver. Oxford University Press, New York 11, N.Y. Y51 pages, size 9 X 51/2 inches, illustrated and indexed. Price :/ 17.75. The present revision is brought up to date with the "British Pharmacopoeia" (1953). The vol- ume has gone through six editions in thirty years. The book is divided into three parts, analytical methods, inorganic and orgamc with 20 pages of appendices. It is intended for students of pharmacy studying chemistry. It is not exactly true that stearic acid of commerce is chiefly stearic acid--sometimes it contained more palmitic than stearic acid, and usually contained equal parts of each along with small amounts of oleic acid (page 200). The definition and explanation of saponins could be better. In general, the book is adequate for teaching pharmaceutical chem- istry.--M. G. rENAVARRE. THE NEW URGUES•' BASES AND LOT:•ONS, by I. K. Hoffman. Chem- ical Publishing Co., Inc., New York 10, N.Y. 1957. 152 pages, size 88/4 X 5 inches, indexed. Price $4.75. This is a mediocre formulary of numerous water-in-oil and oil-in- water liquid and solid emulsions along with some anhydrous oint- ment bases. The classification of surface-ac- tive agents is confused. Certainly, triethanolamine soaps are not non- ionic as indicated. It is doubtful if acacia is nonionic. Sodium borate is hardly cationic. The definitions anionic and cationic are incomplete. The example of sodium sulfethyl oleate is poor and not typical. The amount of preservative used is too little throughout the book for adequate protection, by almost tenfold. Had the author paid more atten- tion to emulsifiers other than sodium lauryl sulfate and self-emulsifying glyceryl monostearate, the book may have been more useful, for sodium lauryl sulfate tends to be irritating to some skins. In the bibliography, the "Phar- macopoeia Danica" is misspelled. What does the author mean by "Dansk Farmaceutforening (1946) ?" This is the name of a Danish union of chemists. There is too much attention given to product names that look like a listing of trade-named prod- ucts, and too little attention to diversifying the formulations.--M. G. DENAVARRE. SOI, VENTS, Seventh Edition, by