Beyond
.
and Flyleaf Helium. W. H. Keesom. xx -f -494 pages. Elsevier Publishing Co., Inc., 215 Fourth Ave., New York 3, Ν. Υ., 1942 (also of Amsterdam and London). S10. X HIS comprehensive summary of dsita accumulated through 1941 on the prop erties of helium in its several phases to gether with mathematical discussions of the helium atom in all its aspects i s a "must" volume for physicists, both ap plied and theoretical. Its historical de velopment of experimental methods of in vestigation in the Leiden Laboratory and elsewhere is presented with pleasing con ciseness in excellent English aided by nu merous line drawings, charts, and tables. Mathematical analyses of methods and results, freely interspersed throughout the text, are clearly expressed by notation im mediately denned without ambiguity. Cross references to discussions or to equa tions, and references to literature of which there are approximately one thou sand listed at chapter ends, are ample but
pi
χ
^P?
not obtrusive, owing to the associated decimal system used for section, figure, table, and reference designations. Liquid and solid helium production is discussed in Chapter III, with emphasis on liquid helium technique applied to ex treme low-temperature investigations. Chapter IV presents the measurements and data relating to the diagram of state for helium; it includes temperature-en tropy diagrams covering the gas phase, the two liquid phases, and the solid phase. The various properties of these two phases of liquid helium are thoroughly discussed. The remarkably peculiar and amazing behavior of liquid helium II (existing below 1.9° K. at atmospheric pressure) is presented with fascinating clarity. Attempts to explain this be havior and some apparent discontinuities of properties on passing the λ curve—the border between the two liquid phases— are recorded; deficiencies of some at tempts are candidly admitted with indi cation of the direction for further investi gations.
£R>
A T O M I C AND FREE RADICAL REACTIONS The Kinetics of Gas Phase Reactions Involving A t o m s and Radicals Atomic and Free Radical Reactions by E. W. R. STEACIE National Research laboratories, Ottawa American Chemical Society Monograph, No. 102
A mosT significant volume for technical a n d in s t i t u t i o n a l l i b r a r i e s , research laboratories, and for t h e p r i v a t e reference shelves of all w h o are seri ously concerned w i t h t h e newer concepts of m o d e r n c h e m i s t r y and p h y s i c s . . . . CONTTENTS: G e n e r a l Introduction. Preface. I n t r o d u c t i o n . E x p e r i m e n t a l M e t h o d s . Free R a d i cals in T h e r m a l Decomposition R e a c t i o n s . Free Radical IMechanisms in Polymerization R e a c t i o n s . Free R a d i c a l M e c h a n i s m s in P h o t o c h e m i c a l R e actions. Systems Containing C a r b o n and H y d r o gen O n l y . S y s t e m s Containing O x y g e n . Systems Containing N i t r o g e n . Systems C o n t a i n i n g C h l o rine ( a n d F l u o r i n e ) . Systems C o n t a i n i n g Bro mine. S y s t e m s C o n t a i n i n g Iodine. Systems Con taining S o d i u m . Systems Containing O t h e r M e t als. Systems C o n t a i n i n g Sulfur. A p p e n d i x . R e action Ixidex and Table of A c t i v a t i o n E n e r g i e s . Subject I n d e x .
548 pages
Illustrated
$8.50
REiNHOtD PUBLISHING CORPORATION^ 330 W r » S L NEW YOM18.. 1 1 Also Publishers of Chemical Ercgii Progressive Architecture, Advert
878
>rirv££ Cataîog. M e t a l Industriels Cata'iosi, Material & Methods. ng fManagetr.ent for. American Chetnic ai Society Publications.
C H E M I C A L
Chapter VIII, prepared largely by H. J. Groenewold, according to author Keesom in his preface dated April 1942, should be recognized bj r theoretical physicists as a masterly discussion of "those properties of the helium atom which immediately depend upon its electronic structure". In it are mathematical presentations with experimental support—or refutation—of various theoretical possibilities or explanations dealing with atomic energy relations. In the few pages of the final chapter J. H. Brunings considers the helium nucleus with evidence of possible helium isotopes. For any scientist interested in helium applications, this compilation by W. H. Keesom is indispensable. E. S. BURSTETT
Laboratory Manual in Metallography. John F. Eckel and Robert J. Raudebaugh. Metallurgy and Metallurgical Engineering Series. Robert F. Mehl, consulting editor, viii -f- 344 pages. McGraw-Hill Book Co., Inc., 330 West 42nd St., New York 18, Ν. Υ., 1946. $4.50. JMLOST courses in theoretical subjects require a certain amount of laboratory work to supplement the theoretical phases and to acquaint the student with labora tory methods and techniques. Many textbooks have been written to assist in the theoretical instruction, but manuals for laboratory courses are not generally available. I t has been necessary for each instructor to provide his own manual, generally in mimeographed form, partly through necessity and partly through choice. This new manual, the result of several years of teaching experience, is an attempt to provide a satisfactory outline of basic experiments for a general labora tory course in metallography. The subject coverage is broad. Starting with the preliminary polishing, etching, and photographic techniques, the princi ples of metallography are gradually de veloped through the various phases neces sary for a good fundamental knowledge of the subject. However, by virtue of the broad coverage, many details which may be considered by some instructors to be highly desirable have been omitted from some of the experiments. The devotion of a single period for learning polishing techniques, as suggested by the authors in the preface, is considered to be entirely inadequate. Polishing techniques are difficult to learn and because of their great importance they should be more highly stressed. The set of exercises included in each ex periment requires considerable outside reading. Many of the questions do not deal directly with the object of the ex periment, which in most cases is the study of the effects of various factors upon the microstructure of the metal. Instead, many of the questions bear upon related subjects such as tensile strength and hard ness, information on which must be obA N D
ENGINEERING
NEWS
tained from outside sources. While this reading will tend to broaden the students' knowledge, the results of the direct obser vations which are the prime object of the experiment are made secondary in impor tance to material which can be gathered without doing the experiments. The ref erences appended to each experiment are adequate and should, serve to give the student some experience in literature sur veying. Most instructors prefer to outline their own courses, depending upon individual ideas and the requirements of the institu tion. For this reason, a universal course of instruction is practically impossible and individual instructors would probably hesitate to adopt a manual which would have to be altered materially for their own use.
Raymond IMP Mill GRINDING DRYING m
GEORGE A. ELLINGER
The Chemistry of Heterocyclic Com pounds. Avery A. Morion, vii + 549 pages. International Chemical Series. Louis P. Hammett, consulting editor. McGraw-Hill Book Co., Inc., 330 West 42nd St., New York 18, Ν. Υ., 1946. $6. T H I S is the most outstanding book to be published in the field of heterocyclic chemistry in recent years. The magni tude and importance of the task which the author has so successfully performed can be gaged by the fact that more than a third of the compounds listed in Beilstein have heterocyclic nuclei. It must be con sidered in the light of serving as a source book both for seminar groups engaged in postgraduate study and for industrial research chemists. Problems involving the preparation of heterocyclic compounds are given at the end of each chapter, so that the student may suggest methods of synthesis. The accuracy of the individual's reasoning may be checked by consulting the original articles noted in the references. Evidence that this is a modern treatise may be judged from t-he fact that frequent literature references are made to articles published as late as 1943 and that refer ence to the structure of penicillin, pub lished in 1945, is included. By the usage of abbreviated formulas and fine print notations, a vast amount of knowledge is condensed into the 520 pages comprising this volume. The practice of using a large letter H to denote the aro matic nucleus is meritorious and does focus attention on trie functional groups. However, some limit must be set on the size of the fine print used in future chemi cal publications or much valuable chemical literature will remain unread by many serious workers. In the words of thie author, "No claim as a reference book i s made, although the list of references is generous. But if the text is studied, a student will acquire a broad knowledge of the field, and if the problems are solved, he will gain a com mand of the principles of heterocyclic V O L U M E
ψ^^β^. ?-""
2 5,
N O .
12
»
»
BLENDING FIRING
The Standard Raymond Imp M i l l with cyclone collector, exhaust fan and piping for air separation system.
This versatile Pulverizer is a compact unit for efficiently h a n d l i n g a variety of materials* It is available i n several sizes and. set-ups for large an.d small plants·
Standard arrangement, as s h o w n , is used for grinding a n d separating, as i n the reduction of chemicals, colors a n d syntHetic compounds· A l s o for dis* integrating and b l e n d i n g mixtures, such as fine pigments or drug powders·
Write for 12-Page CATALOG Ne. 41
In closed circuit w i t h a M e c h a n i c a l Air Separator, the I m p M i l l produces extremely fine and u n i f o r m products, such as sova bean flour, phosphate materials, and kaolin.
With flash drying system, this m i l l re moves high percentages of moisture w h i l e pulverizing, as i n drying and grinding copper sulphate i n the m a n u facture of insecticides·
COMBUSTION ENGINEERING COMPANY, INC R A Y M O N D PULVERIZER D I V I S I O N 1 3 1 6 North Branch S t . , C H I C A G O 2 2 , Illinois Sales Offices in Principal Cities
Canada: Combustion Engineerins C o r p . , Ltd., M o n t r e a l
M A R C H
2 4,
1 9 4 7
87^
=
PENACOL CHEMICALS Resorcin
Catechol
BEYOND
THE FLYLEAF
=
chemistry w h i c l i will enable him to a p preciate the c u r r e n t problems a n d meth ods of solution/ '
P. D . HAMMOND
March Analytical
Chemistry
Contents of -the March issue of Ana lytical Chemistr'zj include :
PENACOLITE
Determination o f Hydrogen in FluorineContaining F3alohydrocarbons. J. F . MILLER, HER^SCHEL HXJNT, AND Ε . Τ. M C J B E E
H. B .
HASS,
Decomposition and Analysis of Organic Compounds -Containing Fluorine a n d Other Halogers-s. J. F MILLER, HERSCHEL H U N T , AND Ε . Τ . M C B E B
Resins and Adhesives
Determination o f Fluorine and Chlorine in Organic Compounds. R. H. KIMBALL AND L. E . T U F T S
Constant-Temp&raturc Steam-Distillation Apparatus for· Isolation of Fluorine. W . B. H U C K A B A F , METLER
ΡΕΙ*ίΝ8ΥΙ,νΑΒίΙΑ COAL PRODUCTS COMPANY P h o n e : B u t l e r , P a . — B r u i n 2641
Petrolia, Pennsylvania
Ε . Τ. W E L C H , AND A. V.
Spectrophotome-^ric Determination of Fluo rine in Glass. M. C. PARRTSH, J . H. W I D MYER, A . J . B l R U N N E R , AND F . R . M A T S O N
Determination of Allyl Groups in Polyallyl Ethers and E-sters. H . M- BOYD AND J. R. ROACH Polarographic Determination of Vanadium in Steel and Other Ferroalloys. J. J. LING ÂNE AND LOUIS ]MEITES, JR. Polarographic Analysis of Mixtures of Maleic and Fumaric ^Acids. BENJ. WARSHOWSKY, P. J . ELVING, AND JOYCE MANDEL
WyM^^M^y^^^>^%^^>^Mw^^^^»^»^M^^^^^^w^wyww^yvwwwyM^^
Molecular Weight of GR-S Fractions. D. M. FRENCH AZND R. rl. EWART Derivatives of Diphenylamine as OxidationReduction Indicators in Alkaline Solution. H. H . WILLARD AND GLORIA D. MANALO
Determination of Carotene in Alfalfa. F. P.
" I F ANYTHING can solve Your Problem it's NUCHAR ACTIVATED
CARBON" W h y n o t take advantage of t h e N u c h a r R e s e a r c h Laboratory t e c h n i c a l service? N u c h a r T e c h n i c i a n s w i l l study your individual purification p r o b l e m and tell you definitely w h e t h e r N u c h a r Activated C a r b o n is the answer. Studies a r e frequently m a d e for t h e p u r p o s e of furnishing p r o s p e c t i v e users of N u c h a r w i t h that quality w h i c h will best serve t h e i r individual n e e d s o n t h e basis of efficiency a n d e c o n o m y . I n evaluating t h e use of N u c h a r Activated C a r b o n f o r a p r o c e s s , t h e N u c h a r T e c h n i c i a n first d e t e r m i n e s th.e m a x i m u m p r o d u c t i m p r o v e m e n t that can b e o b t a i n e d . T h i s is a r r i v e d at B y u s i n g a n excessive d o s a g e of N u c h a r . E c o n o m i e s m u s t then b e c o n s i d e r e d i n o r d e r t o arrive at the " o p t i m u m conditions f o r purification." Factors that m u s t be studied a r e type of s o l v e n t , p H , t i m e of t r e a t m e n t and t e m p e r a t u r e , besides t h e p r o p e r quality of N u c h a r to b e used. O v e r 2 5 years of specialization-in purification by a d s o r p t i o n , give N u c h a r T e c h n i c i a n s a w e a l t h of e x p e r i e n c e t o put t o w o r k o n your problems. W r i t e today for c o m p l e t e information a n d a g e n e r o u s sample of Nuchar — " T t i e M o d e r n Purifier."
INDUSTRIAL CHEMICAL SALES DIVISION WEST 230 PARK AVE. 980
VIRGINIA
PULP
&, P A P E R
COMPANY NEW Y O R K 17, M . Y . C H E M I C A L
ZSCHEILE A N D
R . A.
WHITMORE
Determination of Bismuth, Copper, a n d Lead in Alunidnum Alloys. GEORGE N O R WITZ, SAMUEX BACHTIGER
GREE:NT3ERG,
ANT>
FREDA
Determination o f Olefins, Aromatics, Paraffins, and Naohthenes in Gasoline. S. S. KURTZ, J R . , E. W . M I L L S , C . C. MARTIN, W. Τ . Η Α Β \ Έ Ύ , AND JVI. R. L I P K I N
Calculation of "Weight Per Cent Ring a n d Number of PSings per Molecule for Aro matics.
M . F£. LIPKIIN AND C. C . MARTIN
Standardization of Chromatographic Adsorb ents. A. L. L^EROSEZST
Colorimetric D «termination of R e d Lead. M. H . SWANNT
Determination o f Calciu.m by Potentiometric Titration.
>TORBERT U R I
Simultaneous Determination of Carbon, Fluorine, a n d Chlorine in Halocarbons. R. O'D. TESTTON AND F . E.
MCKENNA
Amperometric Titration of Thiodiglycoi with ElectroW'tically Generated Bromine. J. W . SEASE^. SWIFT
CAUL N I E M A N N , AND Ε. Η .
Amperometric ^Methods in t h e Control of "Water Chlor£ nation. H. C . MARKS AND G. L . B A N N I S T E R
Determination of the Yapor Pressure of Liquids on a . Milligram Scale. CLARK GOULD, J R . , GEORGE HOLZMAN, AND C A R L NIEMANN
Colorimetric M£cromctriod for Determination of Formic Ac5d. W. M . GRANT Oxidative Broroination i n the Determination of Malic Acid- and Aspartic Acid. HEIKKI S u O M A L A I N E I S r AND E v i
Recommended
ARHIMO
Specifications for Analytical
Reagent Chemicals.
EDWARD WICHERS,
Chairman, axid Committee on Analytical Reagents, A C S . A N D ENGINEERING
NEWS
