Eecewt ab& Th? authors are qnitr candid in pointing out the shortcomings of the research under review. The methods used in ohserving and treating the data are often subjective and nanqunntitative. With rare exceptions the presumed componcnts of scientifir ability are named or described rather t,han operationally defined. Many studies of scientists have been made without the use of control groups. Most of the liternturo reviewed is based on the thenry of individual differences. This e l a s s i d approach is concerned with individual traits or factors whieh are believed to determine the choice of and sucreaa in an occupation. "If we understand what makes hoys and girls berome and remain int,erestrd in wienre and scientific occupations, and what makes them decide to enter those fields, we can then organize erperienecs to which they arc exposed in ways whieh permit the development of scientific interest8 and thc choice of a. scientific career." This appears to he onc answer to the Russian inccnt,ivr system of offering material rewards as inducements far pursuing careers in science and engineering. Bot,h ~ y s t n mappear ~ to he manipulative and therefore distasteful but seemingly necessaw due to thc nature of the times in whieh we live. This statement itself is s measure of the interest in and impartanre of the topic in question. ROLLAND .I. G L l D I E U X E ~ t i n n oM E T A L L ~ R G ~COWANICAL Nlraann Tinr,.e. NEW YORK
ION EXCHANGE RESINS
Robert Kunin, Rohm 8 Haas Company. Philadelphia. Second edition. John Wiley & Sons, Inc., New York, 1958. xiii 466 pp. 229 figs. 76 tables. 16 X 23.5 cm. $11.
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THIS serond edition of "Ion Exchange Resins" aupporta the saying that each discovery ~t,iinulatea many more. I n 1035 Adams and Holmes first described thc synthetic ion exchange resins. I n 1950 Kunin and Myers surveyed the nnhject of ion exchange resins in a volume of 212 pages with 12 rhaptcrs, 104 figures, and 615 references. (Far review see J . CHEM.EDLIC. 28, 448 (1951).) Now in 1958 Kunin has reviewed his everexpanding subject in a volume of 466 pages with 17 chapters, 220 figures, and l liO refcronces. The plan of the second edition is very similar to that of the first. The 12 original chapter headings are unchanged. Fivc n e n chapters are formed with material treated less extensively before: nnmelg, ion exchange trcatmcnt of sugar and glyce~ine,hydrometnllurgirnl applications, pemselcctivo membranes, eat& yais, and stability of the r ~ s i n s . Major emphasis is placed upon t,he ~ T O ~ W and lnrge scale usen of t,hr ion exchange resins. Thenn include the synthesis, stability, and capacity of the resins, the drioniaation of W R ~ C I . and of vnriour
(Continued on page A418) JOUANAL O F CHEMICAL EDUCATION
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nonionic substances sueh zs glycerine and sugar, the isolation of various ionic substances sueh as uranium, and the engineering aspects of the use of ion exchange resins. The analytical and biochemical applications are treated briefly. Astonishingly, there are no references to the isolation of the synthetic tl.ansuranium elements by ion exchange chromatography, a series of separations that haye not been achieved in m y othcr way. This second edition illustrates again the great contribution of the ion rrchange manufacturers to remarch and progress in basic science through the production of standardized, stable resins. Even the preparation of this book has had the support of a leading producer of ion exohange resins. All students, teachers, engineers, and pract,ical workers who are interested in the phenomenon and application of ion exchange will find this second edition an invalushle introduction and guide to the subject. HAROLD T i . 8 T R l I N
ARGDWNENATIONAL LABORATORY
LLYONT,1 r m h . o ~
CHEMICAL ANALYSIS. VOLUME 8: COLORIMETRIC DETERMINATION OF NONMETALS Edited by David F. Boltz, Wayne State University, Detroit. Interscience Publishers, Inc., New Y a k , 1958. xii 372 pp. 16 X 23.5 cm. $8.50.
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THIS i~ definitely a long awaited and welcome edition in the "Chemical Analysis Series." Although it haa been ment,ioned by the editor in the preface that it is a mpplementnl volume of Professor Sandell's "Colorimetric Detcrmination of Traren of Metals," the present volume in complete in it,self. I n Chapter I t,he theory of measurement of radiant energy has been described after's. short introduction t o the basic concepts of radiant energy. Passihly i t would have been bet,ter to show tho usefulness of the Ringbom plot instead of just mentioning it. The short, d i m m i o n on instrumentation gives a geneval idea. The broad principles of methodology have also heen diseussrd hem. The elements dealt with in this hook are phosplio~~ous,dieon, nitrog~n, chlorine, bromine, iodine, fluorine, sulfur, t ~ l l m h m ,selenium, and boron. The chapter on phosphorus is excellent. The chapter on nitrogen in accordance with its importance ocrupics almost onefourth of the entire hook. The various modifications of Kjeldahl methods have bccn discussed elaborately. The descriptions of actual procedures are sometime too short. Otherwise, this chapter rovers a wide range of materials and the analyst hill find it very handy. T h r reviewer does not know when the manuscript was completed. Tho chapter on chloride does not include the excellent method for chloride developed by West
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