BOOK REVIEWS 421 in chemistry and physiology-- twenty-six pages, extraction and production of chlorophyll and its derivatives--twenty-seven pages. The author covers only part of the current and some of the early work. Killian's fine report on the deodorant properties of chlorophyll is not mentioned. Some patents, particularly Japanese are reviewed. Probably the best contribution the author has made is the discus- sion of the chemistry, physical and chemical properties of chlorophyll. --M. G. •)ENAv^RRE MODERN COSMETICOLOGY. Volume I of The Principles and Practice of Modern Cosmetics, by Ralph G. Harry. Leonard Hill (Books) Ltd., London N.W. 1, England. 1955. 786 pages, 51/2 X 8'•/4 inches, illustrated and indexed. Price 65s. In writing any book an author has to make advance decisions on the purpose of the book the scope of the work size of the expected publication the audience he intends to reach the style to follow thoroughness of coverage orienta- tion of contents and the amount of his own personal work to be con- tributed to the effort. Harry's purpose appears to couple dermatology and cosmetics--per- haps "cosmeticology" is the result of that marriage. Some may argue that the dermatological aspects have been overstressed. But if the der- ivation of the title of the book is the one surmised above, then this is not true. As to scope, this reviewer feels that the cosmetic side of the work is, in general, quite wide. Indeed very few cosmetic products are omitted. Now, the audience to be reached is ostensibly both dermatologists and cosmetic chemists. So far, so good. But the number of people trained in the cosmetic science (der- matologists or chemists) is far too small to hazard a venture such as this by any publisher. Hence, the fringe prospects must be greater than the core. But for the fringe with limited cosmetic knowledge and possibly less chemical and der- matological training, much of the book is then useless. They are basically interested in the formula- tion of products with reasons for using the various materials in the proportions indicated. The pres- ent book has many formulas. But too many are directly lifted from the work of others, particularly sup- pliers. This is no condemnation of suppliers formulas which so often are well worked out, but instead, a feeling that a qualified man should develop his own formulas. Any- one can reprint formulas already published elsewhere. When it comes to usage and style, authors have a great deal of latitude excepting when writing technical books. In scientific work, the various technical societies of the world have long ago established a standard usage and style. It is true that European countries use a different style than we do here (in fact we have at least two styles) but any style should be uniformly followed. Author Harry is incon- sistent. References follow several styles. Use of names of people is similarly irregular (pages 85 and 95, for example). On page 178, the second and third paragraphs are repeated as they appear in para- graphs one and two on page 110. When it comes to "credits" for other's work, author Harry is me- ticulous to a fault. Neither in this book or otherwise has he ever know- ingly failed to give credit where due. In contemplating a coverage of at least two large subjects, derma- tology and cosmetic science, a book

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