52
JOURNAL OF CHEMICAL EDUCATION
Films, Osmotic Pressure, Diffusivity, Calorimetry, Microscopy, Crystal Form, X-Ray DitIraction, Electron DXmction, and Refractometry. The present writer would like to have seen chapters an fractional distillation and molecular distillation. The only works of comparable scope are Reilly and Ray, "Physico-Chemical Methods," Edition 3, 1939, and OstwaldLuther, "Physico-Chemische Messungen," Edition 5, 1931, but these present volumes are devoted more specifically to organic chemical,problems. In general the treatment is more complete than in either of these books and many topics, such as electron diffraction, are not covered, of course, in these earlier volumes. The disgrms and photographs are excellent and uncluttered. LEALLYN B. CLAPP Bnows U ~ ~ v n ~ B r n r Pnou~n~wcm. R a o o ~Imann
The reviewer is a t once impressed with the tremendous ambition of any chemist who would attempt any such extensive compilation alone and without apparent assistance. The task may seem to be impossible if executed by one individual, but it is heartening to learn from the author that, "Its creation rests upod the support of the present generation of organic chemists." There is usually much to be gained by cooperative effort on projects of this magnitude. The series is in no sense a duplication of the American Chemical Society Monograph on the "Physical Constants of Hydrocsrhons" by Egloff or any other available volumes dealing with the hydrocarbons. The appearance and quality of the loose-leaf binding is far superior to that usually found in similar hinders. If the remaining volumes of this probosed series are as systematically and carefully prepared as the first, it is highly -probable that they will have .. . an extensive sale, hearty reception, and widespread use. Leading industrial and educational libraries will stock them as an essential reference work; advmced research workers will consult them frequently; and aggressive organic students will read and study them as a source of information and inspiration. ~
ENCYCLOPEDIA OF HYDROCARBON COMPOUNDS Volume I: C, to Ca. Joseph E, Foroday. Chemical Publishing 388 pp. 17 X 23 cm. Company, Hc., Brooklyn, 1946. xxix $15.00.
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INTHE literature of organic chemistry there are two comp~hensiveworks-naniely, "Richter's Leximn der Kohlenstoff Verbinduwen" and "Beilstein's H a d u c h dw Or~anischen Chmie"-ihat detail every compound known, identified, and analyaed up to a certain date. They suffer somewhat in being years behind in the tabulations, and especially in the case of the latter, of employing a rather complicated system of classification.. The author proposes a loose-leaf series of volumes, wherein regular annual supplements of sheets may he inserted in their approoriate daces. thus keeoine- the series continuouslv . UD. to date. Volume I of this new encyclopedia is restricted to hydrocarbons containine one to five carbon atoms oermolecule. The system of arrangement of the compounds included is the same as the formula index system of Richtev. Other volumes of the encyclopedia are promised a t short intervals. If the response to this tabulation of the hydrocarbons meets with sufficient success, the author proposes a vast encyclopedia of all carbon compounds which would be a complete storehouse of all the accumulated knowledge of organic chemistry. The sources of information are "Beilstein's Handbuch der Organischen Chmie" and its supplements, British Chemical Abstracts, Chenical Abstrads, and Chemisches Zentralblatt. BeiG stein covers the period up to January 1, 1919, and the latter three abstract journals from that date up to January 1, 1944. The recent Soviet abstract journal. Khim. Reierai Zhur.. was not available. Direct references are made to 312 other journals. The first annual suoolements were promised for April, 1946, and .. would bring the volu~rlcup to January 1. 1945. Thc followinp - informntion is prrrented in the case of each compound, where such' details are available: molecular formula, expanded ~ t ~ c t u rformula, id names of the compound, occurrence in nature, every known method of preparation with reference to each one, physical constants, methods of detection and determination. solubilitv in oreanic solvents. and other outstandinu-. DrOD. erties and reactions. AS a typical example of the comprehensive nature of the tttbulations for each com~ound.it is noted that no less than 553 methods are given for the preparation of methane alone. The contents of Volume I include: Sources of Information; Information Presented; T h e Supplements; System of Arrangement; Nomenclature; List of Journals to Which Reference Is Made; Abbreviations; Hydrocarbons with One. Two, Three, Four, and Five Carbon Atoms, respectively; and Index of Trivial Names. &
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RALPH E. DUNBAR
THEORY AND PRACTICE OF FILTRATION George D. Dickey and Charles L. Bryden. Reinhold Publishing Corporation, New York, 1946. iv 346 pp. 142 figs. 15 X 23 cm. $6.00.
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Tnrs BOOK is the f i s t published in this country on filtration since 1923 when there appeared "A Textbook of Filtration" by these authors and "Industrial Filtration" by A. Wrixht. The present volume is entirely new and not a revision. Filtration has been limited to the unit operation of separating solids from fluids by the use of porous media. Twenty-nine pages are devoted to the history of fltration, whereas the theory and principles receive but 16 pages. In addition to the usual filtration equipment, there are described hydrt~ulicand squeeze presses, oil expellers and separators, centrifuges, and auxiliary equipment. Separate chapters are devoted to two industries that make extensive use of filters: water filtration, and sewage clarification and sewage sludge dewatering. One chapter is devoted to typical applications and flow sheets, although no explanation accomoanies the flow sheets. The reviewer had several criticisms of this book. Possibly it can he summed up in the ratio of 29 pages of history to 16 pages of theory and principles. The chapter on theory and principles consisted largely of quotations from recent papers of Ruth and of Sperry. The nomenclature is that of the author so that several sets of symbols are used, some of which are not defined. No integration of the theory is attempted, no illustrations are given t@ show its utility, no examples are given to show how theory will predict new rates and capacities with changes in operating conditions. The Ruth constant-pressure filtration equation (page 42) contains a misprint. Gone is the nomenclature long used in the industry. A Biichner funnel now is a "straight sided funnel," a nutsche has become a "false bottom vacuum tank," and n@ montejua or blowcase is desrrihd in the book. On the other end, newcomers to the industy are overlooked, as the Lurgi belt filter. References me often incomplete; likewise some sentences. This book will be found in reference libraries having sufficient funds so they need not he selective. KENNETH A. KOBE.
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