482 JOURNAL OF CHEMICAL EDUCATION

good standard account of lyophobie systems. The next chapter wed. In both theverbal and themathematical reasoningincluded by Jonker an Optical Properties of Colloid Solutions is defective in in the worked examples considerable care is exercised with the that it gives no recognition to Dehye for his recent contributions logic. that hsse assumed such importance in the optical determination In spite of its 200 pages, this book does not include problems of particle siae. on such topics as the colloidal state, the half-life of radioactive

Chapter IV, Electrochemistry of the Double Layer, though materials, or m y but the most elementary problems involving its mnt,hematics map appcar forhidding to soma, is a weloome ad- the use of ionization constants.' On the other hand, there is a dition to the literrtture. fairly complete review of the calculations included in the stand-

Electrokinetic Phenomena is s nntuvnl subject to follow the ard course in high-school chemistry. treatment of the double layer. Pages of this hook are typed, then photographed far reproduo-

The Int~raotion Between Colloidal Particles, Chapter VI, i8 tian. one of the high lights of thia volume, bringing t,ogether much Answers are given to most, but not all, the prohlems in the - - - - ~

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 ~ynerenis in s sketchy and unsatis- factory 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,^.

various assignments. Tables provided are adequate for the solution of the problems

that are assigned.

BENTLEY EDWARDS Cnrco STATE COLLBBE

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.

WHAT is 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 to the present. In this tale the reader will fiid Edison, Mhnard, Cross, Nobel,

lllBoRAToRY IN GENERAL and Count de Chardonnet. Cellulose is a bewitching material CHEMISTRY and an exceedingly complex substance, so complex that even to- I. Austin Burrows, Professor Emeritus of Chemistry, Pau 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 33 figs. 20.5 X 27.5 cm. Paper bound. $3.50. with cellulose. and a ~ ~ e n d i x e s of statistical and technical data.

A NUMBER of changes ~ p p e a r in this ~econd edition of what is rapidly becoming the standard manual for ~emimicro laboratory work in general chemistry. These changes have been made,in accordance with replies to a questionnaire sent to a number of ln- stitutions where the first edition of the manual is in use. Ac- knowledgment is made to 21 of these institutions in the preface to the seoond edition. The 21 inntitutions are listed by name.

Changes appearing in the 1852 edition include simplification and clrtrifieation of some of the directions for performing experi- mmts, the addition of a few aomplebely new exercises, and the

but with all this and ihe fact that "Cellulose" is the first book in Doubledey's American Industry Series, i t is a fascinating and lively story with the same William Haynes flavor in "The Stone That Burns," "This Chemiod Age," and "American Chemi- cal Industry: A History."

GRETA OPPE B*LL Hlolr Sonoor. G A L V E ~ T ~ W . TexAs

inclusion of s. eomplrtely new art ol practice problems in thr RVEMEMBERED HETEROCYCLIC COMPOUNDS appendix.

The sutharr are to he commended for their concern over thr WITH NITROGEN AND SULFUR OR NITROGEN, SULFUR, AND OXYGEN (EXCEPT THIAZOLE) .

nprrl to t,eaeh st,ndents to snulv fundamental ~ r i n c i ~ l e s of chem- .~ .... .~ ~~~~~~~ . . . . . ist,ry. A number of experiments toward the end of the hook dis- L. L. Bambos, Parke, Davis and Co., Detroit, Michigan. Inter- play this concern in an uumiat.aknl,lc fashion. science Publishers, Inc., New York, 1952. xi + 403 pp. 72

RENT,,EY tables. 16 X 23.5 om. Single copy, $14; subscription price.

Cnrco 8 ~ m e COLLECE $12.60. (One of a series of monographs, "The Chemistry of

CHICO. CALIIORNI* Heterocyclic Compounds," Arnold Weissberger, Consulting Editor.)

CHEMICAL CALCULATIONS THIS volume is made up of three unrelated divisions: the first

0 is a 211-page review of the thiadiasoles; the second a very short George I. Sackheim. University of Illinois, Chicago Under- seotion on five-membered rings containing nitrogen, sulfur. graduate Division, Navy Pier, Chicago, 1951. 201 pp. 21.5 X selenium, or oxygen atoms in addition to one sulfur and one 27.5 cm. Paper bound. $2.25. nitrogen: the third a 154page description of henzisothiasoles and

benzisosulfonasoles. Selenium analogues are covered, immedi- FOR a number of reasons, thia hook on chemical calculations ately the corresponding sulfur compounds.

w e a r s t'o be wholly admirable. In the first place, most ohem- in subdivided into closely related of istry teachers will agree that the emphasis placed on the use of dimensions and on the use of figures in of the worked pounds, and within these subdivisions the treatment is as follows

first a complete but noncritical review of the literature, examples is sound. Another admirable feature is the provision a more discussion if the section is extensive or for plenty of practice with certain difficult concepts suchas atomic presents oontrovcrsial points, and third a tabularsumey ofpreper- st,ructure, valence, nomenclature, and the like. In the explansr lions and worked examples involving these conoepta, the impact I ED,,,,., N O ~ E : A edition has been snnovnoed which of rcemt revi~ions in t,heoret,ieel chemistry is carefully consid- oontainstwoohaptersone~ertroohemi~try~ndnuclearreaetions res~zetiuclr.