BOOK REVIEWS discussion, evaluation, and correlation of methods applying the phenomenon of differential migration of charged and uncharged particles in general. .4lmost 70 references lead the reader to most of the recent summary works in the fields of chlorophyll pigments, emotenoids in plants, photosynthesis, and chromatography, to original articles of a. number of investigators, and necessarily to Strain's publications, which form the basis for this lecture series. Throughout the book clear line drawings illustrate the sequences of zones in the vmioua rhmrnatogrems. Far many pigments, diagrams af the eharacteristio spectral absorption curves are furnished. Only about a dozen typographical errors were noted by the reviewer, all minor, except possibly the confusion of neoxanthin and violaxanthin on pages 76 and 77. According to the Foreword one of the qualifications of a Priostley lecturer is "the ability to present his material so that it ia intelligible and stimulating to the college junior as well as interesting and informative to specialists in narrower segments of the name field." Strain has handled this part of the assignment very well.
Proceedings of the Congress on Modern Analytical Chemistry in Industry Published for The Society for Analye ical Chemistry, W. Heffer & Sons, Ltd., Cambridge, England, 1958. vii 244 pp. 17.5 X 25 cm. ( 2 guineas.)
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The text contains the 23 papers presented before the Congress a n Modern Analytical Chemistry in Industry arganised hy the Scottish Seetion of The Society for Analytical Chemistry which was held a t the University of St. Andrews in June, 1957. The Congress was divided into 3 sections: I, Analysis in Modern Industry (8 papers); 11, The Application of Some Newer Analytical Techniques in Industry (9 papers); 111, Developments in Analysis for New Problems in Industry (6 papers). The papers are extremely well written and present an up-to-date picture of research and analytical chemistry in the industry of Great Britain. Only one contributor was from the United States (Professor G. Frederick Smith). The tables and figures are of goad quality. Representative titles of the papers are aa follows: Modern Analytical Methods in the Iron and Steel Industry, Emission Spectroscopy in Industrial Analysis, Modern Analytical Chemistry and the Rarer Metals, and The Geochemicd Approach to Prmpeeting for Minerals. Moat of the papers include a list of references well as P A U LROTHEMUND the results of an informal discussion sesBoz 64 sion. It is unfortunate that the book Yellmu Springs, Ohio includes no subject index. The obvious
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lack of direct continuity between succes sive papers and the brevity of the titles often conceal the great wealth of information that is present.
JAMES 41. P A P P E N ~ Q E N Renyon College Gamhier, Ohio Chemistry of the Rare Radioelements
K. W . Bagnell. Academic Press, Inc.,
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177 pp. New York, 1957. x 28 tables. 14 X 22 cm. $5.
14 figs.
This useful little hook was written "with the object of collecting all the published data on the elements from polonium to actinium into one volume and to give some account of the methods used for the study of their chemistry." I t would appear to have succeeded remarkably well in its goal. Certainly anyone who wishes to become familiar with the chemistry of these elements (Po, Bt, Fr, Rn, Ra, and Ac) will want to look a t this volume carefully. The style of writing is concise and clear and appears on perusal to be sccurate. I t is enriched hy the author's own researches and experiences. Misprints and other similar errors are few. On the whole the bonk is very interesting. I t may even stimulate mare adventurous s o u l ~ i n t otrying to obtain these ~ubstar~ces to fill some of the admittedly large gaps which still exist in the knowledge of these elements. (Continued on page Al08)
