Five-membered heterocyclic compounds with nitrogen and sulfur or

Emeritus of Chemistry and Director, Research Foundation, all of the Oklahoma Agricultural and Mechanical College. Second ... Chico, California. BENTLE...
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JOURNAL OF CHEMICAL EDUCATION

482 good standard account of lyophobie systems. The next chapter by Jonker an Optical Properties of Colloid Solutions is defective in t h a t it gives no recognition to Dehye for his recent contributions that hsse assumed such importance in the optical determination of particle siae. Chapter IV, Electrochemistry of the Double Layer, though its mnt,hematics map appcar forhidding to soma, is a weloome addition to the literrtture. Electrokinetic Phenomena is s nntuvnl subject to follow the treatment of the double layer. The Int~raotionBetween Colloidal Particles, Chapter VI, i8 one of the high of thia volume, bringing - t,ogether much - lights important literature. The last three chapters on Kincticn of Flocculstion, Stability of Hydrophobic Colloids, and Rheology af Lyophobio Systems for the most part cover old material in standard fashion with same new perspective. The last ohapkr is probably the low paint in the book, giving no mention of the extensive work of Eyring on nan-Newtonian flow and covering such subjects as thixotropy, rheopexy, and ~ynerenisin s sketchy and unsatisfactory manner. Taking the work a8 a whole the reviewer considers it to be an important and timely contribution to colloid science, and one dest,ined to net a. standard for sueeoeding effort,^. ~

wed. In both theverbal and themathematical reasoningincluded in the worked examples considerable care is exercised with the logic. In spite of its 200 pages, this book does not include problems on such topics as the colloidal state, the half-life of radioactive materials, or m y but the most elementary problems involving the use of ionization constants.' On the other hand, there is a fairly complete review of the calculations included in the standard course in high-school chemistry. Pages of this hook are typed, then photographed far reproduotian. Answers are given to most, but not all, the prohlems in t h e various assignments. Tables provided are adequate for the solution of the problems that are assigned. BENTLEY EDWARDS Cnrco STATECOLLBBE Carco, C A L I P O ~ N ~

CELLULOSE: THE CHEMICAL THAT GROWS William Hoynes. Doubleday & Co.. Inc., Garden City, New York, 1953. 386 pp. Illustrated. 14.5 X 22 cm. $4.

WHATis this chemical that grows, that is the ideal raw material, that forms the basis of so many of the things used today? That is the question which Williams Haynes answer8 in the story of the cellulose industrv from the aae of Marco Polo t o the present. In this tale the reader will fiid Edison, Mhnard, Cross, Nobel, IN GENERAL and Count de Chardonnet. Cellulose is a bewitching material CHEMISTRY lllBoRAToRY and an exceedingly complex substance, so complex that even toI. Austin Burrows, Professor Emeritus of Chemistry, P a u l day experts disagree as to its exact chemical structure. Out of Arthur, Professor of Chemistry, and Otto M. Smith, Professor bhisextraordinsry material comeplastics, rayon, nylon, leequers, Emeritus of Chemistry and Director. Research Foundation, all of explosives, a "global economy of abundance for all mankind." the Oklahoma Agricultural and Mechanical College. Second There is probably no have-not cellulose nation. Mr. Haynes has edition' The Co'r New lg5" xviii + 302 pp. included s. concise glossary, a chronology of events associated 3 3 figs. 20.5 X 27.5 cm. Paper bound. $3.50. with cellulose. and a ~ ~ e n d i x of e s statistical and technical data. A NUMBER of changes ~ p p e a rin this ~econdedition of what is but with all this a n d i h e fact that "Cellulose" is the first book rapidly becoming the standard manual for ~emimicrolaboratory in Doubledey's American Industry Series, it is a fascinating and work in general chemistry. These changes have been made,in lively story with the same William Haynes flavor in "The accordance with replies to a questionnaire sent to a number of ln- Stone That Burns," "This Chemiod Age," and "American Chemistitutions where the first edition of the manual is in use. Ac- cal Industry: A History." knowledgment is made to 21 of these institutions in the preface GRETA OPPE to the seoond edition. The 21 inntitutions are listed by name. B*LL Hlolr Sonoor. Changes appearing in the 1852 edition include simplification G A L V E ~ T TexAs ~W. and clrtrifieation of some of the directions for performing experimmts, the addition of a few aomplebely new exercises, and the inclusion of s. eomplrtely new art ol practice problems in thr RVEMEMBERED HETEROCYCLIC COMPOUNDS appendix. WITH NITROGEN AND SULFUR OR NITROGEN, The sutharr are to he commended for their concern over thr SULFUR, AND OXYGEN (EXCEPT THIAZOLE) . nprrl e schem.~ .... to .~t,eaeh st,ndents to snulv fundamental ~ r i n c.i ~ lof ist,ry. A number of experiments toward the end of the hook dis- L. L. Bambos, Parke, Davis and Co., Detroit, Michigan. Interplay this concern in an uumiat.aknl,lc fashion. 403 pp. 72 science Publishers, Inc., New York, 1952. xi RENT,,EY tables. 16 X 23.5 om. Single copy, $14; subscription price. $12.60. (One of a series of monographs, "The Chemistry of Cnrco 8 ~ m COLLECE e Heterocyclic Compounds," Arnold Weissberger, Consulting CHICO. CALIIORNI* Editor.) ~~~~~~~

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CHEMICAL CALCULATIONS

George I. Sackheim. University of Illinois, Chicago Undergraduate Division, Navy Pier, Chicago, 1951. 201 pp. 21.5 X 27.5 cm. Paper bound. $2.25. FOR a number of reasons, thia hook on chemical calculations w e a r s t'o be wholly admirable. In the first place, most ohemistry teachers will agree that the emphasis placed on the use of of the worked figuresin dimensions and on the use of examples is sound. Another admirable feature is the provision for plenty of practice with certain difficultconcepts suchas atomic st,ructure, valence, nomenclature, and the like. In the explansr lions and worked examples involving these conoepta, the impact of rcemt revi~ionsin t,heoret,ieel chemistry is carefully consid-

THISvolume is made up of three unrelated divisions: the first is a 211-page review of the thiadiasoles; the second a very short seotion on five-membered rings containing nitrogen, sulfur. selenium, or oxygen atoms in addition t o one sulfur and one nitrogen: the third a 154page description of henzisothiasoles and benzisosulfonasoles. Selenium analogues are covered, immedithe corresponding sulfur compounds. ately in subdivided into closely related of pounds, and within these subdivisions the treatment is as follows first a complete but noncritical review of the literature, discussion if the section is extensive or a more presents oontrovcrsial points, and third a tabularsumey ofpreperbeen snnovnoed which edition has I ED,,,,., N O ~ EA : oontainstwoohaptersone~ertroohemi~try~ndnuclearreaetions res~zetiuclr.