422 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS must be large. And so it is here. Harry has done a thorough job of digesting and offering to his readers the consensus of published opinions, sometimes including his own. When it comes to patents, the pres- ent revision is immeasurably better than his earlier editions, but needs still more improvement. This is a day of patents, litigation and prior art. To be useful, any coverage of patents must be fairly complete and world-wide. The layout or orientation is much better in this edition than in pre- vious ones. Cosmetics have been classified as to where they are used as face, hair, eyes, lips, body, feet, etc. it is very useful and practical. Some of the pictures are oversize for the pages, however. How much of the author's own cosmetic experience is included in his book? Quite a bit. But one senses reservations all along the line. Harry is negative on the sub- ject of "elementary" material ac- cording to his preface, but never- theless includes elementary chapters 3, 15, 27, 40, to a certain extent 42 and 45 which space could have been well used to support certain weak sections like those on cake make-up, lipstick, rouge, mascara, sun tan preparations, shampoos, permanent waving, hair lacquer, hair dressings and hair dyes to name a few. The weakness in the above chapters is in the lack of author's compositions in sufficient variety. Most books have errors in proof reading, some more than others. Harry has a f•w too. Thus on page 95 Eidersberg is used for Eidels- berg page 161, the letters at the end of the last two lines have been dropped page 246, Parsol could be Parasol--which is it? page 305, fourth paragraph, socium for so- dium page 193, tenth line from bot- tom, serocin for sericin. There are a few others. Some of the data are not the latest. As examples, the newer helical theory of hair configuration is not mentioned. The book is not up to date on allergic shock result- ing from protein application to un- broken skin. In general, Harry is to be com- p!i.mented for completing this re- v•s•on. The material is good and there is plenty of it. This reviewer may not agree with some of the con- clusions, but that is as it should be. A great deal of work has gone into this book, a fact readily noticed when comparing it to earlier edi- tions. The errors and weakness. noticed can be corrected in future editions. Harry's "Modern Cosmeticology," fourth edition, is a valuable and useful contribution to the cosmetic science. You will want it in your library.--M. G. DENAvARRE. Editor's Note: "Modern Cos- meticology," Volume I, will be pub- lished in the United States by Chem- ical Publishing Co., Inc., New York 10, N.Y., under the title of "Cos- roetics--Their Principles and Prac- tices." This edition will be avail- able about the end of December. INDUSTRIAL DETERGENCY, Edited by William W. Niven, Jr. Rein- hold Publishing Corp., New York 36, N.Y. 1955. 328 pages, 61/4 X 91/4 inches. Price $8.75. Industrial detergency is a large and growing field. In recent years the public and industry have become more conscious of the need for cleanliness. Not only are health and aesthetic values important, but in many industrial processes deter- gency plays a critical role in the suc- cess of the operation or of the result- ant product. This is the first book to cover industrial detergency as a complete subject. The chapters are

BOOK REVIEWS 423 written by specialists in their respec- tive fields. The first two chapters serve as an introduction and cover the funda- mentals of detergency and deter- gent materials. The remaining chapters cover a general topic in industrial detergency. The topics include laundering, dry cleaning, textile processing, foods and bever- ages, dairy cleaning, dishwashing, metal cleaning and general indus- trial cleaning. Each covers a de- tailed discussion of cleaning com- positions, applications, equipment (some of which is highly special- ized), typical cleaning procedures and at the end of most chapters a brief discussion of the future trends of cleaning in that field. Related background information is also in- cluded. The authors have varied their treatment of their topic. Some dwelled at length upon equipment and application procedures, while others placed emphasis upon clean- ing compositions and the back- ground related thereto. The book is well organized as to the method of handling the subject matter as well as convenience to the reader. Since many of the fields are divergent, a reader primarily interested in one phase can cover the introductory chapters and the chapter of his immediate interest without losing continuity of the book. The book contains a wealth of information and in most instances a good number of reference sources are cited. Subject and author in- dices are included. "Industrial Detergency" should be of particular interest to sanitar- ians, supervisors of cleaning opera- tions and those individuals supply- ing equipment and cleaning com- pounds to industry--CHARL•.S E. BUCK, Colgate-Palmolive Co. THE ANALYSIS OF DRUGS AND City. meALs, by Norman Evers and Wilfred Smith. Charles Griffin and Co., Ltd., London W.C. 2, England. 1955. 546 pages, 6 X 9 inches, illustrated and indexed. Price 60s. Essentially this is a total revision of the 1929 edition including ma- terial from the B. P. 1953 and B. P. C. 1949. The principal fault in this book is the lack of identification of methods given. For example, under com- pound ointment of benzocaine B. P. C., page 456, the authors give an assay for zinc oxide and for benzo- carne. The B. P. C. gives only the assay for benzocaine. Therefore, the zinc oxide assay is included as the authors' contribution. But there is no such identification. A valuable addition would be a critique of official methods includ- ing some of the authors' own varia- tions or improvements. The book is well manufactured. No errors were noted. Many use- ful methods not ordinarily found for official products are included. The work is strongly British in flavor but the methods are appli- cable in any country. This is a valu- able book for all analysts.--M. G. DENAVARRE. ORGANIC SOLVENTS. Volume VII of Technique of Organic Chemis- try. Completely revised, by J. A. Riddick and E. O. Toops, Jr. In- terscience Publishers, Inc., New York 1, N. 55. 1955. 552 pages, 6 X 9 inches. Price $8.50. This is the revised edition of the original written by Weissberger and Proskauer, the former of which is editor of this series of books. Six chapters comprise the work. The solvents are classified by chemi- cal type. Physical properties and their selection follow. Two hun- dred eleven pages discuss physical