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BOOKREVIEWS
Vol. 77
sequence of this barrier effect, the thermodynamic activity cally criticizes the attempt to cover all of physical chemistry of the migrant is decreased, thus causing a decrease in its in a single work. T h e second views i t as a noble and well deserved effort, stating that i t is a guide book t o the submobility.” The most charitable view of this sentence and the equations which derive the relation based on i t is t h a t ject. This reviewer feels t h a t the present work is of the latter nature and that Dr. Brooks and his co-editors are dethe term “thermodynamic activity” slipped into the text by serving of high compliment. They have brought together a accident, and t h a t the authors really intend i t to represent large number of contributing experts who have done on the some quite different empirical quantity. whole a splendid job. Nevertheless, “Ionography” should be a book of great Volume I is concerned primarily with the physical chemutility t o all those interested in the separation of natural istry and the physical processes of petroleum and petroleum products or in their characterization by the electrophoretic method. The field is a very new one, as the dates of the fractions, although i t also embraces some synthetic work and the Fischer-Tropsch reaction. T h e latter two subject$ references clearly show, and the authors have reviewed i t might have been more appropriately included in Volume I1 completely. Even though, as they themselves admit, their own point of view is stressed, other points of view are (the smallest of the three) and in their stead to have presented discussions of the thermodynamic properties of hygiven full airing. No other source of reference t o the complete literature of electrophoresis in supported media is drocarbons, such as free energies of formation, equilibria, heats of hydrogenation and bond energies. available. Volumes I1 and 111 deal with chemical reactions of peDEPARTMENT OF CHEMISTRY troleum hydrocarbons and, hence, are probably of the STATEUNIVERSITY OF IOWA CHARLESTASFORD greater interest to most chemists. Space here does not IOWA CITY, IOWA permit a definite description of the volumes’ contents. Thc omission of a discussion of the phenomenon of “knock” and its relation to chemical composition is regrettable. Likewise i t is unfortunate t h a t the current studies on low pressure The Chemistry of Petroleum Hydrocarbons. Volume I. Edited by BENJAMINT . BROOKS,CECIL E. BOORD, ethylene polymerization (such as “Ziegler chemistry” and STEWART S. KURTZ,and LOUIS SCHMERLING.Reinhold the Phillips Company’s work) have been reported so recently as to have precluded inclusion of them in the chapter Publishing Corporation, 430 Park Avenue, New York 22, on this subject. Another field which is virtually ignored N. Y . 1955. viii 664 pp. 16 X 23 cm. Price, $18.00. Volume 11. vi 448 pp. 16 X 23 cm. Price, is t h a t of both “normal” (ionic) and “abnormal” (free radical) additions to olefins. 813.50. Volume 111. vii 690 pp. 16 X 23 cm. The Publishers have done a n excellent job in preparing Price, $18.00. this work and only a few minor errors have been found. This compendium is very appropriately dedicated to T h e prices may seem high but, under the circumstances, are Vladimir N. Ipatieff and Frank C. Whitmore who conjustified, as such a large amount of material is tributed so voluminously to the development of this subject. probably covered. The set is recommended t o those chemists who The set of books represents a tremendous undertaking and are interested in petroleum. the reviewer is reminded of two reviews of “Textbook of SHELL DEVELOPMENT COMPAXY Physical Chemistry” by Glasstone, which appeared in K’ILLIAME. VAUGHAS 8, CALIFORNIA Trans. Furuduy SOL.,38, 120, 214 (1942). The first causti- EMERYVILLE
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