RECENT BOOKS ADVANCED QUANTITATIVE ANALYSIS. Hobort H. Wilhrd and Harvey Diehl. D. Van Nostrand Company, Inc., New York, 1943. xi f 457 pp. 40 figs. 14 X 22 cm. $4.75. The present book is a companion volume to "Elementary Quantitative Analysis" by Willard and Furman. I t is an advanced quantitative analytical text dealing almost exclusively with chemical methods as distinguished from physicochemical methods. In the latter category colorimetry, electrodeposition, and a brief treatment of potentiometric titration are included. The factual inorganic chemistry of the elements pertinent to their analysis is stressed throughout, but theoretical discussion is for the most part omitted. About 120 pages are devoted t o the general operations of quantitative analysis including, among other topics: sampling, dissolving the sample, concentrating minor constituents, and methods for the separation of the elements. Under the last heading are included methods for chemical reduction to the metal, and a discussion of some 10 of the more useful organic precipitants. The next 140 pages of the text are devoted to detailed instructions for the analysis of iron ore, iron, steel, and silicate rock. The analytical chemistry of the elements occurring in these four groups of materials is also very adequately presented. I n the last third of the book the analytical chemistry of each of the elements not already considered is presented in the order of the periodic table. Methods for the determination of the various elements are evaluated and described in sufficient detail t o suggest appropriate methods t o the analyst. Two tables are included which summarize the principal methods for the separation, and gravimetric and/or volumetric determination of the elements. The text concludes with a discussion of methods for the determination of atomic weights. Throughout there are ample references to the original literature, many being t o the
petroleum is mentioned? The following chapters are devoted to a simple explanation of these questions about petroleum and its products; of cracking and its importance in converting otherwise valueless substanc& into high-grade gasolines; of refining, which frees gasoline from foreign substances which interfere with its proper 'performance'; and of "UmRoUs other phases of theoil industry." THORPE'SDICTIONARY oa APPLIED CHEMISTRY.Volume V. Fourth Edition. The late Jocelyn Ficld Thorpe, Emeritus Professor of Organic Chemistry in the University of London and the Imperial College of Science and Technology. Past President of the Chemical Society and of the Institute of Chemistry; and M. A . Whitely, lately Assistant Professor of Organic Chemistry, Imperial College of Science and Technology; assisted by eminent contributors. Longmans. Green and Company, Inc., New York, 1941. xxiii 609 pp 49 figs. 15 X 22.5 cm. $25.00.
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AN ABRIDGED I N D B X TO VOLUMES I-V OR THE NEW EDITION oa THORPE'SDICTIONARY OR APPLIED CHEMISTRY.19 pp. 15.5 X 23 cm. $1.00. Issued with Volume V of "Thorpe's Dictionary of Applied Chemistry" there is an abridged index to Volumes I-V. The index is "a list of cross references which would have appeared as separate alphabetical entries had the 'Dictionary' been published as a complete work." Volume V of the bwk, discussing subjects from Fehling's solution through reinforced, toughened. and safety glass, is the usual well-prepared hook, written for the general chemist as well as the expert.
Amlytical Edition. It -~ is felt that this book is a valuable addition t o the familv of -~ ----. . analytical texts, especially in its consideration of the analytical of Geology and Mineralogy, University of Colorado. John chemistry of the rare and less common elements. Wiley and Sons, Inc., New York, 1943. v f 206 pp. IllusW. W. RTTSSET.~. trated. 14 X 22 cm. S . 0 0 "It is the purpose of thii tcuthook to revicw the principles of optical rrydtnllogmphic theory. Practical applications are not given a prominent place because the writer feels that, once a CHEMICAL FORMULARY. Volume VI. H. Bennett, Editar-in- student has firmly grasped fundamental concepts, he will be Chief. Chemical Publishing Company, Inc.. Brooklyn, New able to meet any problem related t o the field." The reviewer feels that the latter ideal is no more certain t o be achieved in York, 1943. xx 4- 640 pp. 14 X 21.5 an. $6.00. The fields covered in this volume of the series are: adhesives; optical crystallography than in chemistry. However, the serious beverages; cosmetics and drugs; emulsions; farm and garden student, especially if he can fall back on some guidance in coping specialties; food products; hides, leather, and fur; inks and with the perversities of actual crystals, will find this book a very marking materials; materials of construction; metals, alloys, useful presentation of the theory of double refraction. A profusion of excellent diagrams is a valuable feature; exand their treatment; paint, varnish, lacquer, and other coatings; paper; photography; polishes and abrasives; pyrotechnics and terior and interior conical refraction, and primary and secondary explosives; rubber, resins, plastics, and waxes; soaps and clean- optic axes are well discussed; the relationships between the different kinds of crystallographic projection are clearly shown, as ers; textiles and fibers; miscellaneous; substitutes. A work such as this, while perhaps not properly part of one's are the derivations of various types of interference figures. Universal stage methods are not included. "chemical education," nevertheless supplements it, as practically I n a book as logical in exposition as this one, and concerned every chemist comes t o realize, sooner or later. We are sometimes called upon t o practice the "art" of chemistry as well as its primarily with properties inherent in the crystal lattice rather than with the external aspects of crystallography, statements "science." such as the following seem even more than ordinarily inconsistent with modem usage (at least in chemistry): "Crystals are Crystals develop THE AMAZING PETROLEUM INDUSTRY.V . A. Kalichsky, Re- polyhedral solids hounded by plane faces. search and Development Laboratories, Socony-Vacuum Oil under special conditions only and in the mineral kingdom are No faces are present in Co., Inc. Reinhald Publishing Corporation, New York, the exception rather than the rule. . anhedral grains, and such grains cannot properly be described 1943. 234 pp. 12.5 X 18.5 cm. 52.25. as crystallized." The term "plane of polarization" appears to A book for the layman, or elementary student, mquiring no technical background or ability other than the imaginative in- be used synonymously with "plane of vibration" although these planes are mutually perpendicular. Unequivocal designation of telligence t o understand the significance of a few structnral extinction angles might well have been stressed; "Z A c = 15'" organic formulas. It describes its own purpose and scope: "Non-technical people may be inclined t o ask, What is this may be measured either in the acute or in the obtuse angle B. C. W. MASON mystery about octane numbers, catalytic gasolines, cracking, and CoaNBLL U N l V R R S l T Y 1m*c*. New YORE all the other odd terms that are constantly encountered whenever ~
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