PRI~CIPLES OP INORGANIC AND ANALYTICAL CHEMISTRY.E~tlest 3. Baldwin, Professor of Chemistry. University of Idaho (Southern Branch). Part I. Properties of Atoms and Molecules; Part 11, Theory of Reactions. D. Van Nostrand Co., Inc., New York City. 1940. viii f 506 pp. 113 figs. 14.5 X 22.5cm. $3.25. This textbook, which primarily is intended for second-gear students, is more than a book on analytical chemistry. As a matter of fact the hook might be classified as a textbook of elementary physical chemistry rather than one written about inarganic chemistry. The text is divided into two parts, either of which may be considered first during the teaching of a course. The first part, about 200 pages, is essentially a discussion of the kinetic theory, atomic and molecular weights, solutions, atomic structure, and the periodic classification, the electron theory of valency, and nuclear chemistry. The author has done an excellent jab of presenting some of the more recent developments of chemistry, but i t is unfortunate that he did not go further toward a more complete treatment of certain of the topics. This is particularly true in the discussion of radioactive changes and nuclear chemistry. Part I1 deals with reaction velocities, equilibrium, ionization, precipitation, hydrolysis, axidatian-rednction-in other words, the topics of analytical chemistry. Many illustrative problems, given in detail, add strength t o the discussion. The hydronium ion is utilized in the discussions of hydrolysis, indicators, and related topics, although the simple hydrogen ion is frequently used in the discussion of oxidation-reduction reactions. The chapters on oxidation-reduction exhibit weaknesses which are probably due to an attemot t o shorten the discussion. This is most evident in the sexions on galvanic cells. The method of bnlanring oridation-reduction reactiuni outlinrd is the one urili7ing valrncc change. After having developed the matrrialunrlcctrode potentials in connection with oxidation-reduction, i t seems regrettable that s method involving ion-electron reactions was not also included, since experiment shows that such changes actually occur. The stvle in which the book is written is deasine. - The importance of developing a broad point of view is emphasized throughout the text. Illustrative problems, given in detail, are very helpful. A more extensive discussion in a few places would clarify some of the points which are confusing. The hook is essentially a discussion of principles t o assist the student in gaining further knowledgeif thescience of chemistry. LAURENCE L. QU~LL Oaro Srme UNlveasnv ~
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agents. Much useful information is summarized in the 15 tables in the appendix. For each of the substances there is a brief statement concerning its occurrence, properties, and importance for the health of one exposed to it. These facts are followed by the details of the analytical procedures considered best for determining the amount of the substance likely t o he encountered. I n general, the methods seem to have been well chosen, and they are adequately presented far the use of trained analysts. Although the book is primarily a valuable compilation of analytical methods used in industrial hygiene, the general material, together with the bibliographies a t the ends of the chapters. should be of interest to many teachers of chemistry. M. G. M E ~ O N Puaonli UNlveaslrr L A P ~ B T I INDIAWA B.
LABORATORYMANUALOP PHYSICALCHEMISTRY.Albert W . Dauison, Professor of Chemical Engineering. Henry S. wan Klooster, Professor of Physical Chemistry, and Walter H. Bauer, Assistant Professor of Physical Chemistry. Rensselaer Polytechnic Institute. Third Edition. John Wiley and Sons, Inc.. New York City. 1941. viii 236 pages. 46 figs. 21 X 27.5 cm. $2.50. The third edition of this weU-known manual embodies certain innovations making for maximum utility. These are the use of a spiral hinder, an abundance of graph paper after the appropriate experiments and the appendix, and an unusual number of tables of data-twentv-four-in the anoendix. .. The experiments themselves, forty-seven in number, arc carcfully selected and well tested Numerous figures and clear descriptions leave onc in lirtle douht concerning proccdurc. The theoretical discussions are good. The most unusual experiments are those on the polarographic method and Longsworth's moving boundary apparatus. It is regrettable that there are so few literature references and that full specifications are not given for the apparatus used in measuring dielectric constants. However, this book will undoubtedly accomplish the authors' purpose whenever used. I t can be recommended for consideration by evew teacher of physical chemistry. MALCOLM M. HARING
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THE SPECIALTHEORYOP RELATIVITY.Herbert Dingle, D.Sc.. D.I.C., A.R.C.S., Professor of Natural Philosophy, Imperial THE ANALYTICAL CHEMISTRY OF INDUSTRIAL POISONS, HAZAF~S College of Science and Technology. Chemical Publishing Co., Inc., Brooklyn, N. Y., 1941. vii 91 pp. 2 figs. n m SOLVENTS. Morris B. Jacobs, Ph.D.. Department of 10 X 16.5 cm. $1.50. Health, City of New York. First Edition. Interscience 661 pp. 110 Publishers, Inc., New York City, 1941. xviii Working from the fundamental principle of relativity: "There figs. 15 X 23 cm. $7.00. is no meaning in absolute motion." t o the special or restricted theory of relativity, "There is no meaning in absolute velocity." This work is Volume I of "Chemical Analysis," a new series of monographs on anslytical chemistry and its applications being the author goes into an expanded discussion of the latter. He considers a few of the mare important experiments which, acprepared under the supervision of an editorial board consisting of the eminent analvsts B. L. Clarke. I. M. Kolthoff. and H. H. cording to traditional physical ideas, might have been expected to lead to a knowledge of the absolute velocity of the EarthWillard. The author's professed objective was to present the most sig- i. e.. the velacitv of the Earth thronch the ether. Their failure to do SO i< then examined to see what error in traditional i d e s led nificant chemical aspects of the subject of industrial hygiene, with particular reference t o the analytical chemistry of industrial poi- to thc helief that they would succeed, and hence tu find the corsons, hazards, and solvents. The material, much of which has rection which must he made. It is found that thii currrction appeared since the first World War, previously was largely scat- can he mast simply expressed as a substitution, for what we have been accustomed to call the "length" of a body, of a slightly tered through periodicals and governmental bulletins. Following an introduction and certain general instructions on more complicated expression. This substitution must be made sampling and an handling gases, the remaining 15 of the total 19 whenever length occurs, explicitly or implicitly, in a physical chapters are devoted to some 150 substances constituting possible relation, and since every physical measurement that is made dehealth problems in the field of industrial hygiene. Representa- pends in part an measurement of length, all physical measuretive classes of materials are dusts, metals. inorganic gases, and ments are thereby affected. The main part of the work is then aliphatic and aromatic hydrocarbons and their derivatives. The to determine, from consideration of the classical definitions of chapter on halogenated hydrocarbons, far example, covers 24 the various physical quantitieetime, mass, velocity, force, etc.compounds. Separate treatment is accorded chemical warfare all the necessary corrections to be applied to them.
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