BOOK REVIEWS 67 Nov. 14 and 15, 1952. It covers a very extensive field and contains a wealth of information. The con- ference was arranged by Doctors H. Sobotka and H. P. Gregor. The paper by P. N. Craig deals with the synthesis of ion exchange resins and considers the relation- ship between the chemical structure and the performance of the several types. The several physico-chem- ical aspects of the reactions involved are considered in the contributions by M. Ezrin and H. G. Cassidy, H. P. Gregor and M. Frederick, A. W. Davidson and W. J. Argersinger, Jr., and B. A. Soldado. There are chapters on cation and anion ex- change processes (by J. I. Bregman and S. Peterson, respectively), also a chapter on non-ionic separations (by R. M. Wheaton and W. C. Bau- man). A special position is occupied by a discussion of ion exchange mem- branes (K. Soilder). The biological and therapeutic application of ion exchange resins is reviewed in several chapters dealing with: separation of blocheroically important sub- stances (W. E. Cobh), purification of antibodies by means of antigens linked to ion exchange resins (H. C. Isliker), selection of cation exchange resins for therapeutic use (A. E. Heming and T. L. Flanagan), sodium removal by cation exchange resins (E. W. McChesney, F. C. Nachod and M. L. Tainter), clinical expe- rience with mixtures of anion and cation exchange resins (K. G. Kohl- staedt, B. L. Martz, R. S. Griffith, and O. M. Helmer), changes in fecal and serum constituents (T. S. Dan- owski and L. Greenman), the role of the gastrointestinal tract in the pre- vention of sodium depletion by cation exchange resins (K. Emerson, Jr., S. S. Kahn, and D. Jenkins), electrolyte and water movement across the in- testinal wall (M. B. Visscher), lab- oratory data and clinical use of cation exchange resins (M. F. Levitt), and ion exchange resins as a diagnostic tool (H. L. Segal). The treatment of the different subjects fully satisfies the high standards which one has come to associate with the conferences of The New York Academy of Sci- ences.--E. G. KLAR. MANN, Lehn & Fink Products Corp. PeEc•s I)E CosM•ToI•oc•, Volume IV of Cerbelaud, by R. Colson, P. Velon and J. Morelle. Editions Opera, Paris 9, France. 1954. 729 pages (including advertising) illus- trated and indexed. Price 5200 francs. Written by three well-known French cosmetic chemists, this vol- ume truly rounds out the earlier three volumes. Each author con- tributes material of a high caliber that is a definite contribution to the cosmetic science. Ren• Colson contributes the first seven chapters which consist of a classification of surfactants accord- ing to 21 groups. Each class is then described in detail and examples of American, French, German, Bel- g!an, and British manufacture are g•ven. The French products are stressed as they should be. An unusual arrangement includes formulations of a variety of cosmetic products that can be made from them. Both ingredient and product pat- ents are discussed throughout. The second part consists of a col- lection of analytical methods appli- cable to cosmetics, written by Pierre Velon. This author has made nu- merous contributions, on the same subject, to cosmetic literature. After an introduction to standard, modified and new methods, the author discusses many of the prin- cipal cosmetic materials. In doing so, physical and chemical properties, adulteration, and usefulness are covered. Where does one draw the line in

68 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS an alphabetical discussion of raw materials? How complete should it be? How about trade names? The present effort is rather general but unfortunately not complete. Too many common materials are not included. Five different general classifica- tions of cosmetics are then dis- cussed in terms of product control. These include lotions, creams, lip- sticks, powders, dentifrices, nail polish, and sun tan preparations. Jean Morelle writes a section on hair and permanent waving, con- sisting of 159 pages. In general the section is well done. Patents are reviewed and discussed. Published material is evaluated and original data submitted. Incidentally, it is in this section that two misspelled words were found: one on page 580 under the formula for keratin glutamique is spelled with an "n" and reference 2 on page 628 should be Reed not Red. The author discusses thioglyco- lares, thioglycerol, and thiolactates. Speakman's and Stove's works are often quoted, but the new spiral theory of keratin structure does not seem to be mentioned. Formulas for various waving solutions com- plete the work. A few criticisms must be made. There is no table of contents, which makes it difficult to locate pertinent material. In the section on surfac- rants, abbreviated company names (following a trade name) are not fol- lowed up with a company index. Literature references do not follow accepted chemical literature stand- ards throughout the book. The effort of authors Colson, Velon, and Morelle add up to a great cosmetic book. It will add to the cosmetic knowledge of the world. If the publisher had not overpriced the book, $16 (in Paris) for a book of 683 pages, containing 26 pages of advertising, it would find a greater audience. As it is, its sale may suffer proportionately. If this book is an example of what we can expect in cosmetic literature from Europe, it sets a new high standard for the industry and the science of cosmetics.--M. G. NAVARRE.