summruy of molecular sieve properties, their behavior as ionic sieves, exchange equilibria and kinetics. This chapter would he better if it included data on moleoular sieve 13X and references to the more recent literature. I t is already somewhat out of date. Chapter 4 is on the heteropolyacid salts and is largely concerned with ammonium molybdophosphate. The separation of cesium is discussed. The largest section, Chapter 5, is on hydrous oxides and insoluble salts, and is concerned mainly with airconium oxide and zirconium phosphate. Inorganic ion exchangers in water purification systems and ion exchange membranes are treated very briefly. With the exception of a brief discussion in the introduction, the first synthetic inorganic materials of the permutite type are not discussed. It appeared to this reviewer that the literature wverage is inconsistent; the chapter on hydrous oxides is the beat documented and contains the most recent references. The book is well illustrated and well written. AIthough it is intended to serve as a guide to the subject of inorganic ion exchangers, it should he welcomed by anyone interested in the auhject. Small in size, it is a big book in terms of content. In summary, this little monogrsph is a. fine addition to the series "Topics in Inorganic and General Chemistry!' D. W. BRECK Union Carbide Corp. Tarrytom, New Ywk
Principles and Methods of Chemical Analysis
Harold F. Wallon, University of Colorado, Boulder. 2nd ed. Prentice-Hall, Inc., Englewood Cliffs, New Jersey, 1964. m i 484 pp. Figs. and tables. 16 X 23.5 cm. $10.95.
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The author claims in the preface that "This hook is about the 'chemistry' in analytical chemistry!' He goes on to state that "The 'chemistry' in analytical chemistry has developed greatly since the first edition of this book appeared in 1952. As a result the book has had to be extensively revised. New chapters have been added on precipitation from homogeneous solution, solvent extraction, aeidbase titrations in nonaqueous solvents, and linear titration methods, and sections on complexometric titrations and ionexchange separations have been rewritten. To save space the earlier chapter on electrolytic methods of analysis has been dropped (though same of its contents have been incorporated into Chapter 22) and material on some of the older chemical methods has been omitted or curtailed." Chapters 1, 2 and 3 on Solubility, Physical Form, and Impurities in Prcipitates are almoet identical with the lirst three chapters of the first edition p u b lished in 1952. The last section of Chapter 3 in the fimt edition, an Precipitation from Homogeneous Solutions, has
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been expanded into a chapter in the second edition. Chapter 5, Drying and Ignition of Precipitat,es, appears to he very similar to Chapter 4 by the same title in the earlier edition. Chapter 6 on Organic Precipitants and Extractants has been expanded and improved. Brief discussions of the 1,lO-phenanthrolines and related compounds and of charge transfer spectra have been added. Chapter 8 on Ion Exchange in Analytical Chemistry has been improved by rewriting. Chapter 9 on Separations by Vaporisation and Exbractions in the first edition has been expanded into two chapters. Chapter 9 on Separations by Vaporieation is very much like the previous presentation. However, an interesting and informative discussion of the Schaniger method has been added. The discussion of Seoaratiions hv Solvent Extraction has bsnu completely nwrirten 1 1 d tqunded I a n I . Tlw prrdent:cmn rs a definite improvement over the previous edition. Additional topics such as Liquid Ion Exchangers and the Craig Counter-Current Extraction Method have been included. However, it is very diappointing to find only one sentence devoted to organophosphorus compounds other than tributyl phosphate. A discussion of the chemistry and applications of tri-n-octylphosphine oxide (TOPO) and related neutral bifunctional organophosphorus compounds should certainly have been included. Chapters 11 and 12 on Titrimetric Analysis and Oxidation-Reduction Potentials, respectively, have not been changed significantly. (Even the same error appears on p. 212 as was present in the first edition.) Chapter 13 on Methods of Potentiometric Titration has been expanded and improved as has Chapter 14 on AcidBase Titrations. Chaoter 15 on Acid-Base Titrations in ~ b n a ~ i w Solvents us is new and represents a significant improvement aver the previous sketchy presentation. Chapters 16, 17, 18, 19 and 20 on AcidBase Indicators, Oxidation-Reduction Titrations, Titrimetrie Oxidation-Reduo tion Methods in Organic Chemistry, Oxidation-Reduction Indiestors, and Precipitation Titrations, respectively, re main essentially unchanged. Chapter 21 on Complex-Forming Titrations has been expanded, especially the discussion of Titration with Chelating Agents. The final chapter on Linear Titration Methods is good and includes much of the material ppreviously dkoussed under the chapter headings of Electrolytic Methods of Analysis and Conductometric Titrations. The word "sampling" is not even mentioned in the Subject Index and does not appear to he discussed in the text. I t is not clear why the author chose ta completely neglect such an important subject as sampling. This second edition is a definite improvement over the first and should find acceptance as a textbook for advanced undergraduates or for an introductory course at the graduate level. Caanms V. BANKS Iowa Slate University Ames
Solubilities of Inorganic and Organlc Compounds. Volume 2, Ternary and Multicomponent Systems, Part 2 Edited by H. Stephn and T . Stephen. Maemillan Co. ( a Pergamon Press hook), New York, 1964. 1106 pp. Tables. 15 X 22.5 om. $28.50. This volume is part of a comprehensive survey of the solubility of elements and compounds. Volume 2 is limited to ternary and multiwmponent systems. All data, are presented in table form. Compounds are named by the IUPAC system, and extensive indexing facilitates easy reference. J.V.D.
Molecular Complexes in Organic Chemistry Lawrence J . Andrews and Raymond M . Keefer, both of the University of California, Davis. Holden-Day, Ina., San 196 pp. Figs. Francisco, 1964. viii and tables. 18 X 25.5 em. 88.75.
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The imoortance of molecular wmnlexes and the poetilble slgmficanre which' they nr.v play ul several tl~acipl~nesof che~niatry Ld probably uot uq fu~niliorto or irnderatood by researchers as may he desired. In view of the active research carried out over the past several yeara in this area, the appearance of hooks devoted to this subject is lone overdue. The names of Andrews and I k f w nre read3y fauuliar to workers in tt1i.i area, a d 111 light of them scieul~fic cuutrtbutiuls they should be well qunl~fird to write such a hook. The title of the hook implies that the material is restricted to organic chemistry. Although it may have been written primarily with organic chemists needs in mind, there are many inorganic wmppoudds diacumed which form molecular complexes. Furthermore, applications of complex formation and their pomible significance to numerous fields such aa biochemistry, catalysis and kinetics, spectroscopy and polymers are discussed to varied degrees throughout the hook. From the variety of molecular complexes which can farm in solution (possibly to some extent in the gaa phaae), it seems that it is difficult to avoid moleeulrtr aasaciation of some form in moat all chemical systems. For this reason it is necessary that all chemists he a t least familiar with the subject. The book being reviewed is a. good first start in this endeavor, hut not complete in itself. In one sense the title may be misleading in that o n b so-called donor-acceptor or charge transfer complexes are considered by the authors. Other types or classifications of inter- and intra-molecular interaction, such as hydrogen bonding, have
