1674
JOURNAL OF CHEMICAL EDUCATION
AUGUST,1931
chemistry, the course being "for one school text for those students who wish semester (18 weeks) with two periods to follow up their year of "chemistry" a week for lecture and recitation and two with a second year of the same subject. laboratory periods." The first eight Ross AIKENGORTNER weeks are devoted t o a consideration of TJNIU~X-SIT? OD MINNBIOTA ST. PAUL. MINX the aliphatic compounds, with the exception of carbohydrates and proteins. which are included in the second eight Laboratory Manual of Physiological weeks along with other biochemical Chemistry. MEYERBODANSKY, Ph.D., compounds. Director of Laboratories, John Sealy Hospital, Galveston, and Profeswr of The 175 pages are divided into twenty Pathological Chemistry. Univers~ty of chapters, introduction, saturated hydroTexas; and MARION FAY, Ph.D., carbons, ethylene series, acetylene series. Associate Professor of Biological Chemhalogen derivatives, alcohols and ethers, i s m . School of Medicine, University of aldehydes and ketones, acids and their Texas. Second edition, revised. John derivatives, polyhasic acids and urea, Wiley & Sons, Inc., New Y a k City, amines, optical activity, carbohydrates, 1931. xi 260 pp. 9 figs. 15 X aromatic compounds, proteins, metaho23 cm. S2.W. lism, nutrition, dietary necessities, and foods and beverages. Appended to each This hook was written very obviously chapter is a list of questions to guide the for students in medical courses in physiostudent in preparing for the inevitable losied chemistry: it contains no reference examinations. to methods applied to plant biochemistry The chapter on carbohydrates may he although the field of animal biochemistry taken as a sample. It covers a total is very well covered. There are chapters of 12 pages, 5 pages of which are devoted on colloids, the proximate principles, to the monosaccharides, less than 2 tissues, digestion, milk, hlwd, and urine. pages to the disaccharides and 3 pages The first chapter deals with the place of to the polysaccharides. The only formulas quantitative chemical analysis in physiowhich are given are the straight-chain logical chemistry; i t is brief and to the structural Iomnlas for glucose, "levulose." point and provides an excellent point and galactose. (The spacial configura- of departure for the motivation of the tion of galactose is in error, the formula laboratory work. Throu~hontthe hook labeled "galactose" is in reality d-idose.) there is evidence of sound pedagogical The ring formula and mutaratation are balance; the qualitative experiments are not mentioned. Starch is given the given in a manner indicating that they "proposed formula" CllsHzsoOlaaor (Ca- have been tried out and found satisfactory. H,oO,),.. The directions for the quantitative The reviewer regrets that it is necessary methods are given much as originally to offer such ahhreviated chemical courses published and, while sample calculations in certain of our universities. The only are occasionally given, the student is justification seems t o lie in the supposition required to establish his own formulas that a little information is better than no for estimating the results. The selection information a t all, but to designate such of methods has been confined t o those a course a "university course" certainly found satisfactory by the authors, with justifies in part the criticisms which emphasis upon the more recent ones. Abraham Flenner has recently directed I n no sense is the hook a catalog of a t the American university system. As a currently available biochemical methods. college text i t is too elementary, and too There is, unfortunately, little attention given to the quantitative evaluation of brief to he recommended. I t might serve a very useful purpose as a high- the enzyme potency of the digestive
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VOL. 8. NO. 8
RECENT BOOKS
juices. It is an easy book t o use because of the effective use of footnotes containing references to the literature, supplementary information and comments by the authors. This volume constitutes a worthwhile contribution t o this special branch of chemical education. ARTHUR H. SMITH
1675
devote to the terpenes sufficient space to discuss them in any great detail and no new edition has appeared to bring this part of his monograph up to date. As noted in the title, this volume covers only the simpler acyclic and monacyclic terpenes and their derivatives, and these are grouped under the following Y*LB UNlvaasrrv chapter headings: Part I. The Simpler New H a v m cons. Acyclic Terpenes and Their Derivatives; The Terpenes. Vol. I. The Simpler Chapter I. Hydrocarbons (geraniolene, Acyclic and Monocyclic Terpenes and myrcene, ocimene, etc.), Chapter 11. Their Derivatives. J. L. SIMONSEN, Alcohols (citronellol, geraniol, linalool, DSc. (Msnc.). F.I.C.; Professor of etc.). Chapter 111. Aldehydes (citronellal Chemistry, University College of North and eitral), Chapter IV. Ketones (odenone, tagetone, etc.), Chapter V. The Wales, Bangor; formerly Professor of Cyclogeraniolenes and Their Derivatives Organic Chemistry, Indian Institute of Science, Bangalore. At The Uni- (cyclocitrals, ionones, irone, etc.). Part versity Press, Cambridge, England; 11. The Monocydie Terpenes and Their The Macmillan Co., New York City, Derivatives; Chapter I . Hydrocarbons 420 pp. 14 X 21.5 cm. (limonene, terpinenes, phellandrenes, etc.), 1931. xv $8.50. Chapter 11. Alcohols (menthols, terDuring the past two decades great pineols, pulegols, etc.), Chapter 111. Aldeprogress has been made in our under- hydes (phellandral, perillaldehyde, etc.), Chapter IV. Ketones (menthones, standing of the chemistry of the terpenes pulegones, caNOne9, etc.), Chapter V. and of their derivatives, but we have lacked, in the English language, any Oxides (cineols. pinol, ascaridole). Complete author and subject indexes follow comprehensive and adequate presentation of these advances and of our present the text. Type and paper are excellent. I n order to restrict the size of the hook, knowledge of this important branch of organic chemistry. Dr. Simonsen, him- the author has, with a few exceptions (sylvestrene, carvenone, terpine hydrate. self an outstanding investigator in this etc.), limited himself to the ten-carbon field, has undertaken t o suoolv .. . this terpenes found in nature. A valuable deficiency, and the volume which has just appeared is t o be followed by a second feature is the attention which the author one which will discuss the dicydic and has given to determination of constitutions and methods of synthesis, for this will be sesquiterpenes. The terpenes present in essential ails of great assistance t o all teachers of organic are considered in Parry's "The Chem~stry chemistry, as well as to t i m e undertaking of Essential Oils" and in Finnemore's research in this difficult hut fascinating "Essential Oils," as they are in the new field. edition of Gildemeister and Hofmann's The subject matter is presented clearly "Die aetherische Oele," and in other and as concisely as is consistent with recent works in languages other than intelligibility. For those wishing fuller English, where they are presented more details, ample reference to the original from the standpoint of their interest to articles are provided. Such troublesome the perfume and essential oil industry problems as the rearrangements and than as a chapter in systematic organic cyclizations of many of these terpenes, chemistry. Brooks' "The Non-Benzenoid the configurations of the various stereoHydrocarbons," an the other hand, he- isomeric menthols, menthones, and mencause of its extensive scope, could not thylamines, the constitution of citronellol,
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