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. S ~ T H
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devote to the terpenes sufficient space t o 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, geranial, linalool, DSc. (Msnc.). F.I.C.; Professor of etc.). Chapter 111. Aldehydes (citronella1 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. Aldehydes (phellandral, perillaldehyde, etc.), progress has been made in our mderChapter IV. Ketones (menthones, standing of the chemistry of the terpenes pulegones, CaNOneS, 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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JOURNAL OF CHEMICAL EDUCATION
geraniol, rhodinol, neml, and the corresponding aldehydes, the dioxide formula for ascaridole, and many others of equal difficulty or perplexity are ably handled. I n the opinion of the reviewer, the author has succeeded admirably in his purpose, and his book should he most welcome t o all interested in the organic chemistry of the terpenes. MmsroN T.Bocsnr COLOMRI* UNIVEES~ NEW
Yoax
CITY
MISCELLANEOUS PUBLICATION
mexBends*
Bulbs, and Seals. A M"UaL for the Technician' W. T. LEVITT. Corning Glass Works, Coming, New York. 1931. 15 pp. 20 X 27.5 cm. Free t o instructors.
This booklet has been prepared to aid laboratory workers and instructors in the construction and repairing of special designs of Pyrex apparatus ware. The directions and illustrations are exellent.
