These omissions me minor, however, and the second edition of this text d e serves the same cordial reception offered to its predecessor. EZZAT 8. YOUNATHAN FLORD*STATEU N I Y E R B I T ~ T*mm*sses. Fmnlo*
THE PHYSICAL CHEMISTRY OF ELECTROLYTIC SOLUTIONS Herbert S. Horned, Professor of Chemistry, Emeritus, and Benton B. Owen, Professor of Chemistry, Yale University. Third edition. Reinhold Publishing Corp., New York, 1958. xxxi 803 pp. 16 X 23.5 cm. $20.
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INTHE eight years ~ i n c ethe appearance of the second edition of HarnedandOwen's well-known treatise on electrolytic sohtions, the literature dealing with this field has been quite extensive with important advances having been made in some cases. For this reason, the third edition should be of considerable importance t o thoseinterested in the field. The previous material has been substantially revised and approximately 150 pages of new materid has been dist,ributed among the same 15 chapters. One of the most serious criticisms of the earlier editions oouoerned the inclusion of data based on incorrect values of the fundamental constants. This has been re* tified by changing the appropriate tables and the numerical coefficients in all numbered equations throughout the hook to conform with the values recommended by the Subcommittee on Fundamental Constants. National Research Council. 1952. f he inclusion of both a subject and chemical index is commendable whereas the reduction of the excellent table of contents of the previous editions to a. mere title for each chapter is most regrettable. The paper used in this edition constitutes a definite improvement and although the new material contains a number of typographical e m s , many are of a trivial or obvious nature. The main importance of this new edition consists in the coverage it gives to some of the lat& developments in the field of electrolytes. These include: irreversible
ter ~ ; m Theory for tlhe calckation of activity coeffioients; Onsager and Kim's general theory of the Wien effectfor strong electrolytes; Fuoss and Onsager's conductance theory, that includes higher order inhomogenwus terms and the ion size parameter, and its application to both associated and unassociated electrolytes; McKay's method of handling activity coefficients in solutions containing two electrolytes. In each case above, the book contains a t least an outline of the theory, a table of constants necessary for calculation, and an application to recent
measurements. (Continued a page A686)
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