JANUARY, 1947
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ber, hut smoked sheet. In discussing methods of latex concentration, no reference ir made to rvapumtion (Revertex proress) which h hased on thc additim of pn,t~etivecolloids and therefore is entitled at least to he listed in a text suooosedlv devoted to .. colloids. The discussion of the nature of rubber-like elasticity (pp. 86-8) needs revision. Racking of rubber resulting in loss of elasticity is not even mentioned. In montmorillonite (p. 111) it is not the silicon which is reolaced hv aluminum, but the latter by an ion of lower valency, e. g., magnesium. Finally. .. I should like to comment on the bibliography. The boob recommended by the author for those who wish to make a fuller study cannot he strictly classified as colloid chemical texb books. Those listed as elementary are either outdated or not specific colloid ohemieal texts, and the book written by the reviewer is certainly not zn advanced, but an elementary, text used in many first term courses in colleges in the United States.
MEN AT WORK Stuart Chase, in collaboration with Marion Tyler Chose. Harcourt, Brace and Company, New York, 1945. 146 pp. $2.00.
OP Stuart Chase, from acquaintance with his "TragREADERS edy of Waste,'' "Your Money's Worth," "Men and Machines," "Economy of Abundance," and other titles, expect his books to relate economics to human welfare. The volume under review is not a disappointment to that expectation. The reviewer first read "Men at Work" seeking an 'answer to the question, "Why do men work?" He found it in chapter two and that answer was, "not primarily for money." him with the A further oerusal of the book, however.. imoressed . pertinence of parts of it to the work of the teacher or supervisor in our public schools. Even the college he thought. - orofessor, . might read those parts with profit. The chapters on "Educating the Boss," "Show How," and ERNST A. HAUSER It ~ & i e rand Better" illitrate in a splendid way the basic "Do MASSACBDBETTS INBTITUT. O I TBCBNOLOB~. psychology of good teaching unencumbered by the vocabulary of C * ~ e n m o s .M n s s h c a a s a ~ ~ s the professional pedagogue. All persons concerned with teacher training should be required to read and reread the chapter on METHODS OF ANALYSIS (OFFIC~AL AND TENTA- "Educating the Boss." Every teacher in service would profit W E ) OF THE ASSOCIATION OF OFFICIAL AGRI- by a trial of some of the pithy suggestions in regard to "job inCULTURAL CHEMISTS struction" in the ohapter on " S h o ~How," and many directors of Edited by Henry A. Lepper, Chairman of the Editorial Board. instructional laboratories with their aver-population of G. 1,'s and revised by the following Committee on Editing Methods oi will find the chapter on "To DO It Easier and Better" pregnant Analysis: H.I. Fisher (Chairman), L. E. Warren, I. W. Sale, with suggestions of way8 of eliminating waste time, supplies, and W.H. Ross, W. F. Reindollar, and Marion Lapp Otis. Sixth human energy. Two other chapters, while not so speoifically pointed to the edition. Association of Official Agricultural Chemists, Washor laboratory, are, however, helpful to a fuller appreclassroom ington, D. C., 1945. xii 932 pp. 76 figs. 15.5 X 23 cm. ciation of the more general background of our school job. They $6.25. are entitled: "Why Men Work" and "Teams, Groups and INACCORDANCE with its custom of revising the "Official and Gangs." Tentative Methods of Analysis" every five years, the Revision The chapters on "Bigger Pie" (labor-management committees), Committee has now published this sixth edition which incorpo- "Same Bureaucrats Are Human," and "What TVA Means" rates the ohmges in methods and the additions adopted by the should have high priority for reading by all voting citiaens. Association at the 59th annual meetine: held in October. 1944. It is unorthodox to turn to an economic journ%list for help for This text has long been recognized as-the "Book of ~ e t h o d s " the teaching profession, but there are times when the "outsider" is actually more objective and therefore more helpful than the for those actively. enpa~ed - . in the analysis and examination of agricultural or related products and of many other commodities, "within-th-fold" educator. B. CLIFFORD HENDRICKS some of which are only slightly related to agricultural pursuits. Umvenamr or Naan*sa* In the 43 chapters devoted to analytical procedures we find in LINCOLN. N~BRASKI addition to such expected subjects as soils, fertilizers, insecticides, leathers, beverages, eereds, d,airy products, meat products, PHYSICAL METHODS OF ORGANIC CHEMISTRY waters, drugs, and the like, suoh unexpected subjects included as oosmetics, enzymes, dessert preparations, baking powders and Volume I. Arnold Weissberger, Eastman KodaL Company. chemicals, 6sh and marine products, vitamins, radioactivity, and Interscience Publishers, Inc., New York, 1945. vii 736 pp. others. The chapters on "Extraneous Materidls in Foods and I$ X 23 om. $8.50. Drugs," "Gelatin, Dessert Preparations, and Mixes," and "CosUNDERTHE editorship of Arnold Weissberger, this volume is a metics" are new. The chaoter on vitamins has been meatlv - . exscientists from the United .. pmded and now includes in addition to biologioal asmy methods, collaboration of 27 other physical I t is a treatise on physical methods freStates and Canada. spectrophotometric, fluorometric, and chromatographic methods. quently used by the orkrtnic chemist on the graduate research In this revision changes have been introduced into nearly all of It is desirable to have such a volume because there is no level. the chapters and the number of pmes increased by ahout 175. secondary source for this type of information. Most chemists ~ s e k w i lwelcome l the chtLngefr& Roman numerals to Arabic previously have been forced to search periodicals for much of the numbers for chapter identification, and a decimal system of numbering the sections of each chapter. Each cross reference to information necessary to attack an organic chemical problem by an unfamiliar physical method. It was the specific object of the other parts of the book is now identified by a complete chaptereditor "to relieve the chemist of much of the burden of such a section decimal number. The book is well printed and appears adequately hound. This search." In this the editor has been successful, to say the least. revised text will be wanted far laboratory use and reference by Graduate students are likely to welcome this book enthusiall those engaged in the field of agricultural chemistry and its re- astically. The following chnpter headings will suggest the scope of the lated fields. first volume: Determination of ,Melting and Freezing TemperaW. W. RUSEELL tures, Boiling Temperatures, Density, Solubility, Viscosity, SurBmvm U ~ ~ v r ; n m r fnco Tension. Pxrachor. Properties of Monolayers and Duplex P a o v ~ o m o Raoon ~, ISLAN~ ~
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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.
Tmx~s Avmm, TE-s
UmrrsaarTr olr
