prehensive theory about polycyclic hydrocarbons”. By systematic use of simple symbols (Kekulb structures and n-sextets), an attempt is made to achieve a uniform description of the chemical and spectroscopic behavior of aromatic hydrocarbons. These chapters, which contain many new and unconventional proposals, will certainly stimulate discussions. In addition there is an informative contribution by Regina Schoental on the carcinogenic effect of aromatic hydrocarbons. This book ought to prove an indispensable companion for every chemist, physicist, or physician working directly or indirectly with polycyclic aromatic compounds. M. Zander [NB 338/196 IE] Polycyclic Hydrocarbons. By E. Clar. Vol. 2. Academic Press, London-New York; Springer Verlag, Berlin-Gottingen-Heidelberg 1964. 1st. edit., LVIII + 487 pp.. linen DM 78.40 (about $20.00). The second volume of E. Clar’s monograph on polycyclic aromatic hydrocarbons contains descriptions of peri-condensed systems, i. e. the hydrocarbons derived from perylene, pyrene, fluoranthene, etc. A total of about 200 aromatic systems is described. The literature has been completely scanned until the end of 1962 and sometimes up to the end of 1963. In the chapters on the various hydrocarbons, the well-proved divisions used in Clar’s German monograph (1952) on aromatic hydrocarbons has been retained. First the syntheses of the hydrocarbons are described; here many well-printed formulae help to maintain clarity. This is followed by a description of the most important physical properties. Ultraviolet spectra are recorded clearly in illustrations with data on the band maxima and extinction coefficients. On account of its numerous spectra alone, the book should be of great value to the chemist interested in spectroscopy. Furthermore, the most important reactions of the hydrocarbons - substitution, hydrogenation, oxidation, etc. - are discussed. Whenever possible, data on their biological activities are given. This second volume, which now completes the treatise, will also be of great service to anyone working in the field of polycyclic aromatic compounds. M. Zander [NB 4001258 IE] The Enzymes. Edited by P. D. Boyer, H. Hardy, and K. Myrback. Vol. 8 . Academic Press, New York-London 1963. 2nd completely revised edit., XX f 484 pp., numerous illustrs. and tables, linen S 16.50. This volume contains a discussion on the porphyrin enzymes and on the oxidases involved in direct oxygenation. As in the previous volumes, an opening chapter (Nicholls) gives an orderly survey of the functions of the cytochromes, whose cofactors are so similar but whose catalytic activities determined by the protein moiety - are so different. The individual cytochromes are then given due consideration. Although naturally the recently discovered structure of the porphyrin of the respiratory enzyme is not included, the expanse and orderliness of data given are highly impressive, and abundant references are cited covering literature up to 1962. There is only little quantitative information given on the phenol and amine oxidases containing iron or copper. On the other hand, a thorough treatment is given (NichollsSchonbaum, K. G . Paul) to “the fossil enzymes of unknown function in mammals” - catalase and peroxidase, which played so important a role in the development of the fundamentals of the molecular biochemistry of enzymes, for with them B. Chance worked out the methods of kinetic analysis for studying the enzyme-substrate complex and its quantitative dependence on the physico-chemical parameters of the reaction‘medium. The new field of mixed-function oxidases is discussed with accustomed authority by 0. Hayaishi, and a clear and poignant description of the interesting topic of phenylalanine hydroxylation is given by its discoverer S. Kaufman. The agglomeration of facts in this way awakes reasonable hopes that with their help, the basic principles of Angew. Chem. internat. Edit. 1 Vol. 4 (1965) / No. 10 enzyme action may soon be recognized, about which, unfortunately, little is said. It is regrettable that here the authors - perhaps in contrast to the earlier edition - have steered clear of hypotheses, which would at least incite discussions. The volume not only completes the description of the oxidizing enzymes, but also closes the entire work and ends with a collective index. The series provides a firm foundation on which molecular biophysical research can continue to build. L. Jaenicke [NB 382/240 IE] Analysis of Ancient Metals. By E. 11. Caley. International Series of Monographs on Analytical Chemistry. Edited by R. Belcher and L. Gordon. Vol. 19. Pergamon Press, Oxford-London-Edinburgh-New York-Paris-Frankfurt 1964. 1st edit., XI + 176 pp., 64 tables, linen E3.10.0 (about $ lo.-). After an indication is given of the irregularities caused by weathering processes on various layers of metallic archeological finds, proposals are made for eliminating such interferences, and the most important corrosion products and their analysis are described. This is followed by highly detailed practical procedures for chemical investigations of the metals Au, Ag, Cu, Pb, Sn, Sb, and their historically interesting alloys, and of iron and steel and their weathering products. Mainly classical analytical procedures are applied. More recent assay and separation procedures, and micromethods are not included, although these are probably valuable for rapid series estimations. The purely chemical section is aptly supplemented by numerous sample analyses and an extensive list of references. The book is well printed and furbished and is of interest to anyone engaged in analyses of ancient metals. W. Geilmann [NB 3651223 IE] Recent Progress in Surface Science. Vol. 1. Edited by J. F. Danielli, K. G . A . Pankhurst, and A . C . Riddiford. Academic Press, New York-London 1964. 1st edit., XI1 + 414 pp.. numerous figs., a few tables, clothbound S 16.00. In this book, eleven chapters by several authors give reviews of sections of this very broad field of knowledge, which attracts the interest and research participation of biologists, chemists, physicists, and engineers alike. Subjects dealt with include the viscosity of interfaces, foams, films of free liquids, electrical double layers and electrokinetic phenomena, electrode processes, corrosion of metals, surfactants, the chemistry of semiconductor surfaces, facilitated diffusion through cell membranes, cell contacts, the external surface of cells and intercellular adhesion, and the formation and properties of bimolecular lipid membranes. Progress reports of this kind are very valuable, for they save the scientist who wants to secure a preliminary survey of the latest results on a certain topic much time that would otherwise be required for studying widely scattered original publications. The encyclopaedic nature of this book makes its purchase recommendable particularly for both large and small libraries. B. Fell [NB 3801238 IE] Water and Solute-Water Interactions. By J. L. Kavanau. Holden-Day, Inc., San Francisco-London-Amsterdam 1964. 1st edit., 101 pp., 7 figs., linen $ 5.50. Because of the fundamental significance of its subject, this little book should arouse great general interest. The author briefly treats the following in particular: the structures of water and ice, short- and long-range order in water, proton mobility and proton exchange, and interactions of water with ions and macromolecules. Many advances in these fields have been made so recently that they have not yet found their way into most textbooks. However, many important questions still remain the object of occasionally contradictory speculations and hypotheses. The author’s attempt to make his publication as up to date as possible is 899 illustrated by the fact that he reviews even the latest papers, including some dated 1964. However, the selection of literature reviewed sometimes appears to be a little onesided, and some relevant matters have been omitted or are only mentioned incidentally, e.g. the bonding effect of hydrophobic interactions or the importance of the structure of water to the mechanism of fast reactions. G. Schwarz [NB 393/251 IE] The Application of Mathematical Statistics to Chemical Analysis. By V . V . Nalimov. Translated from the Russian by P. Basu. Pergamon Press, Oxford-London-EdinburghNew York-Paris-Frankfurt 1963. 1st edit., IX + 294 pp., 54 figs., numerous tables, linen 44.4.0 (about $ 11.60). This book is composed as a manual for analytical chemists or physicists. It has obviously been written with a strong background of personal experience and with careful consideration of the pertinent literature. The reader is assumed to possess a fundamental knowledge of higher mathematics and mathematical statistics. The book is divided into nine chapters. The first three deal with general principles, mathematical statistics in chemical analysis, and random variables. This is followed by chapters on the normal (Gauss) distribution and the distribution functions derived from this and o n Poisson and binomial distributions. Chapter 6 deals with the comparative evalution of chemical analyses, and Chapter 7 with variance analysis. The eighth chapter presents a statisical treatment of linear relationships, including a short section on correlation analysis. The closing chapter gives rules and proposals for the planning of statistical experiments. A particularly valuable list of further literature is given: 172 references with short descriptions of the contents of books and papers covering the period up to 1959. This is followed by a most useful appendix with 15 clear tables of the most important statistical functions. The book contains a wealth of interesting and original thoughts and of step-by-step calculations of numerical examples. The experienced worker in this field will find many suggestions here. The reviewer considers the volume less suitable as an introduction for the beginner, for the main themes cannot be followed well enough. The book adopts a very wide scope, and important conclusions are given unobtrusively in the text; if these had been made more prominent by using italic or bold-faced type, their importance would be more immediately apparent. The symbols used are clear, but the number of concepts introduced could have been reduced. Some definitions are imprecise, and the curves of the Gauss distribution in Figure 1I are poorly reproduced. Some aspects are omitted or given only brief treatment, e.g. the question of the distribution of possible true values around a result found by experiment and the definition of the limit of detection. On the other hand, the book is full of useful ideas and hints. For instance, it is pointed out that decisions reached as a result of statistical criteria are of the nature of agreements. Admirable features of the book are the applications of Poisson distribution to semiquantitative analysis and of binomial distribution to qualitative analysis. Even the Chebysheff inequality is used in analyses when nothing is known of a distribution function. Nalimov himself states in his foreword that he considers his book to be a contribution to the further development of a general statistical theory of chemical analysis. It is certainly a most stimulating and useful contribution. H . Kniser [NB 406/264] Mucopolysaccharides. Chemical Structure, Distribution, and Isolation. By J . S. Brimacombe and J. M. Webber. B. B. A. Library, Vol. 6. Elsevier Publishing Co., AmsterdarnLondon-New York 1964. 1st edit., I X + 181 pp., 10figs. 13 tables, linen D M 31.- (about $8.00). Although numerous monographs have appeared withm recent years on this topic, the present volume is appealing because it brings a careful and comprehensive survey of the 900 more recent literature in clear terms and a systematic order. The authors have attained this their aim firstly by restricting the material covered to the mucopolysaccharides the structures of which have been completely or largely elucidated and secondly by stressing the classical methods of structural analysis in carbohydrate chemistry. There are six chapters given on the individual types of mucopolysaccharides, even blood-group substances being regarded as such (!). Although data are presented on their distribution, preparation, biosynthesis, and enzymatic degradation, the book is not suitable as a work of reference nor for use as a laboratory manual. For example, data on molecular weights and specific optical rotations, which the reader wouid have preferred in tabular form, are scattered throughout the text, and other physical properties that are of importance especially for the biological function, such as viscosities, electrophoretic mobilities, sedimentation constants, etc., are omitted altogether. In addition, the authors have restricted their discussion in the chapters on quantitative estimation, separation, and purification to a mere reiteration of the methods available without commenting on their usefulness. Despite these shortcomings, the experienced worker in this field will take recourse to this very informative book, especially on account of its reliable bibliography, which encompasses 946 titles. E. Buddecke [NB 4021260 IE] Treatise on Analytical Chemistry. Edited by I. M. Kolthoff, P. J . Elving, and E. B. Sandell. Part I : Theory and Practice. Val. 3 and Vol. 4. Interscience Publishers, a Division of John Wiley & Sons, New York-London-Sydney 1961 and 1963. 1st edit., Vol. 3, Section C (concluded) Separation: Principles and Techniques: XVII + 439 pp., numerous figs. and tables, linen 65.15.0 (about $16.00); - Vol. 4, Section D-l : Magnetic Field Methods of Analysis; Section D-2: Electrical Methods of Analysis: XXV + 953 pp., numerous figs. and tables, linen 49.9.0 (about S26.50). Fifty-three of the total of 124 sections planned for the first part - Theory and Practice of Analytical Chemistry - of the analytical handbook “Treatise on Analytical Chemistry” have now appeared. The present partial volume I 3 concludes the Section C begun in the partial volume I 2 o n separatory methods and their principles and practical techniques; the partial volume I 4 contains section D-1 on magnetic analytical methods and section D-2 on electrical methods of analysis. As for the first two partial volumes, the editors have secured competent specialists to write the individual portions. The fundamentals of the methods are described very carefuily and comprehensively, but often the practical aspects receive too little attention. For this reason, the reader will miss a comparitive appraisal of various methods for solving different specific analytical tasks. In the partial volume I 3, H. Irving and R . J. P. Williams deal with liquid-liquid extraction, and J . A . Hermann and J. F. Suttle with methods of separation based on solid-liquid equilibria. Separation and purification by crystallization and precipitation are given much more space than the important new technique of zone melting (only 3 pp.). The major portion of volume I 3 is devoted to chromatography. The fundamentals of chromatographic methods are discussed by I. Rosenthal, A . R. Weiss, and V . R . Usdin; thereafter individual methods are described: liquid-solid adsorption chromatography by B . J. Mair, liquid-solid ionexchange chromatography by W . Rieman and A . C. Bveyer, paper chromatography by H. J. Pardera and W. H. McMitllen, and gas chromatography by C. E. Bennett, S . Dal Nogare, and L. W. Safranski. Here too, the 240-odd pages afford far too little space to go beyond the fundamentals and general execution l o stress the importance of these methods. Thinlayer chromatography is unfortunately not treated in this partial volume, which appeared in 1961. Electrochromatography could at least have been mentioned in the discussion of the fundamentals of chromatographic processes, Angew. Chem. internat. Edit. 1 Vol. 4 (1965) No. I0

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