JLST
PI
BUSHED!
A definitive new work on principles, phenomena, materials. - .
SEMICONDUCTORS Edited by N. BRUCE H A N N A Y Hell Telephone Laboratories Murray Hill, .Veil» Jersey
BOOKS Chemistry ef Tannages
material, a practical procedure for ap plying the tannage in the tannery, and a discussion of the mechanism of d i e tanning reaction. The book is therefore of interest to both the tanner and those interested in fundamental research. Of additional interest and ν alue are the ex tensive bibliographies given at the end of each « «banter. This undoubtedly is the most scien tific and informative treatment of leather tannages so far published in the U.S.A. The authors have interpreted the latest scientific information in a highly complex field in a capable man ner. The chapter on the chemiMiy oi vegetable tannins is exceptionally good. The more scientific approach to the problem of the stability of leather is demonstrated by a statement of the au thors from the chapter on that subject: "Aging is a complex process iii which some factors have an adverse effect on fiber strength, others on the chain length and cross links, mechanical and hydrothermal stability being affected in dependently/' T h e term "hydrolysis" has become too general, the authors conclude, to be used in reference to this whole problem.
As in all fields of scientific endeavor, research on leather was highly acceler ated during the second World War. ACS Monograph N o . 140 With the use today of mobile units equipped with atomic missiles, it some times seems that good shoes for our soldiers are not n e c r ^ a i ) . I Ii>v\ ever, the backbone of the Army is still the infantry, and because of this research on leather, our armed forces are today 1959 < wearing the best footwear that was ever 792 developed. pases, Not all of the research done during $15.00 this period was slanted toward the de velopment of better-quality leather. Much work was also done on the funda mental nature of tanning and the stabil ity of leather tannages. This is a highly complex and difficult field. If a com pound of unknown structure combines Here is an unrivaled, indispensable ref with a compound of unknown structure, erence on the fundamental physics and what do w e have? physical clictnistry of semiconductors, with detailed analyses of important semi Work on the development of tannages conducting materials. The emphasis is summarized in "Types of Tannages," throughout is on hasie principles and phenomena. edited by Fred O'Flaherty and his two Semiconducting materials are treated senior scientists, William T. Roddy and individually, with the amount of attention Robert M. Lollar, of the Tanners Coun given each material being' in direct relation cil Research Laboratory, University of to the degreoof understanding of that ma terial which oxists. Cincinnati. This is the second volume "Types of T a n n a g e s . " Vol. 2 of "The Knch chapter, whether it be on princi of a series of four planned by the edi Chemistry and Technology of ples, crystal growing, or specific materials tors. is preceded hy nn introduction placing that Leather." Fred O'Flahertv, William chapter in perspective with semieondueEach chapter in this volume is writ T. Roddy, and Robert M. Lollar, edi tion as a whole. tors, xiv -+- 5 5 4 pages. Reinhold ten by a recognized expert in his par By virtue af its organization, thorough Publishing Corp., 430 Park Ave., ticular field. These authors are from ness and authorship, this work will stand New York 2 2 , Ν. Υ. Reviewed by for many years to come as the standard England, Germany, France, India, and hook on semiconductors. Joseph R. Kanagy, Leather Section, South Africa, as well as the United National Bureau of Standards. States. All of the more important tan CONTENTS: Semiconductor Principles; Si""v^i J-v " -'•"•tor Chemistry; Semi nages are included, from the old and c o n d u c t o r Crystal ^ i o "·»": Cc. n t r o l o f highly complex vegetable tannins, the C o m p o s i t i o n i n L i q u i d - S o l i d " ^ . / m s ; The basic metallic salts, the aldehydes and Chemistry of Some C o m p o u n d ^ ^ ^ ' c o n d u c tors; Defect Interaction? in Semi^or»· . -*-o. · j oils, to the interesting new synthetic tan Diffusion and Precipitation in Germaniu ning materials which have been develand Silicon; G r o u p I V Semiconductors,· -, d to replace the vegetable tannins. O t h e r Elemental, and Intermetallic, Semi Cryogenic Engineering. RUSSELL B. conductors; Compound Semiconductors; SCOIT. \i -f- 368 pages. D. Van Noshe book is well organized with an C o m p o u n d s o f the Transition Metals,· traucl Co., 120 Alexander St., Prince in*/- ductory chapter on criteria of tanO r g a n i c Semi conductors, Recombination, ton, X. j . 1959. S5.60. T r a p p i n g and Luminescence,- Light A b s o r p l age which ably points out some of the C-overs low temperature process and meth tion in Semiconductors,· Semiconductor difficul' " .\s in understanding and ap ods, materials and practical applications in Surfaces; Electrochemical Reactions at \r cryogenics. Prepared for the Atomic En praising tannages. Then follows a ergy Commission. terfaces; Bibliography; Index. chapter on the shrinkage phenomenon, Electrophoresis: Theory, Methods, and Send jor your uti-ap jroval which is probably the best criterion of Applications. MILAN BIEH, editor. xx copy loday jt oni— + 563 pages. Academic Press, 111 tannage. The different tannages are Fifth Ave., New York 3, Ν. Υ. 1959. then discussed, and the book is appro ^ $15. Κ ΕΙ Ν Η Ο L D priately ended with a chapter on stabil Fundamental principles involved in elec trophoresis—its problems and ways to solve PUBLISHING ity of tannages. them. Includes complete laboratory pro CORPORATION Each description of a tannage in cedures. cludes a discussion of the probable Deph ΛΛ-453,- 4 3 0 Park A v e n u e , The Chemistry of Drugs. NORMAN EVKKS structure and properties of the tanning N e w York 2 2 , Ν. Υ. and DENNIS CALDWELL. 3rd ed. 415
a^Bucgg
NEW BOOKS
106
C&EN
APRIL
2 0,
1959
pages. Interscience Publishers, 2 5 0 I Fifth Ave., N e w York 1, N . V. 1 9 5 9 . $12.25. S t r u c t u r e , p r e p a r a t i o n , properties, a n d t h e r a p e u t i c uses of synthetic a n d n a t u r a l d r u g s revised a n d u p d a t e d . C o l o r i m e t r i c M e t h o d s of Analysis I n c l u d ing P h o t o m e t r i c M e t h o d s . Vol. I I A . FOSTER D E E SNELL, CORNELIA T. S N E L L , a n d C H E S T E R A R T H U R S N E L L . Χ -|- 7 9 3
p a g e s . D . V a n N o s t r a n d C o . , 120 Alex a n d e r St., Princeton, N . J. 1959. $ 1 5 . C o v e r s t h e literature of t h e past 11) y e a r s . T h o u s a n d s of m e t h o d s for inorganic d e t e r m i n a t i o n s a r e given in detail. T h e Technical Writer. J. YV. G O D F R E Y and G. PARR. 3 4 0 pages. John Wilev a n d Sons, 4 4 0 F o u r t h A v e . , N e w York 16, N . Y. 1959. $S.50. An aid to Presentation ·»·•>·*• ι .~«·»»»·!....*;.-»,*. -~c I t e c h n i c a l literature. A u t h o r s assume t h e ! r e a d e r is g r o u n d e d in composition b u t w a n t s t o p u t a finish on his work.
Step up to faster, safer
Semiconductors. Ν . Β. HANNAY, editor. A C S M o n o g r a p h N o . 140. xxiii -f- 7 6 7 p a g e s . Rcinhold P u b l i s h i n g Corp., 4 3 0 Park Ave., X e w York 2 2 , Ν . Υ. 1 9 5 9 . $15. ! A n e w work on t h e principles, p h e n o m e n a , I a n d materials of semiconductors. I n c l u d e s physical chemistry a n d f u n d a m e n t a l p h y s ics. É l é m e n t s d e Science e t T e c h n o l o g i e d u Caoutchouc.
3rd
éd.
JEAN
L A BRAS. I
xviii + 4 3 5 p a g e s . R e v u e G é n é r a l e d u Caoutchouc. 4 2 , R u e Sehcfier, P a r i s 1 6 ' , F r a n c e . 1 9 5 8 . 2 0 0 0 Fr. Revised a n d b r o u g h t u p to d a t e for Γ ΐ η stitut Français d u C a o u t c h o u c . I n F r e n c h . Psychopharmacology: uation.
Problems in Eval-
J. O . C O L E a n d R. W . G E R A R D ,
editors, xvii + 6 6 2 p a g e s . National A c a d e m y of Sciences, N a t i o n a l R e s e a r c h Council, 2 1 0 1 Constitution Ave., W a s h ington, D . C . 1 9 5 9 . $6.00. P r o c e e d i n g s of t h e C o n f e r e n c e on t h e E v a l u a t i o n of P h a r m a c o t h e r a p y in M e n t a l Illness held in W a s h i n g t o n , D . C , S e p t . 1956. T h e C h e m i s t r y of I n d u s t r i a l 2nd ed.
Toxicology.
H E R V E Y B. E L K I N S .
ix -f
452
pages. J o h n W i l e y a n d Sons, 4 4 0 F o u r t h A v e , N e w York 16, Ν . Υ. 1 9 5 9 . $11.50. A d d s d a t a of t h e past 10 years on all n e w a n d newly recognized h a z a r d s . Second Symposium on Coal Preparation. viii - ( - 5 1 3 p a g e s . T h e Secretaries, C o a l Preparation Plant Association, P . O . Box 1 2 1 , 3 0 1 Glossop R o a d , Sheffield 10, E n g l a n d . 1 9 5 8 . 2 0 / . E i g h t e e n p a p e r s from t h e S e c o n d S y m posium on Coal P r e p a r a t i o n held b y t h e ι "i».·*.* ..*·.-». .«it
~£
\ r;~:~~
IT^J
zx...
_r
L e e d s , L e e d s , E n g l a n d , O c t o b e r 1957. W e l d i n g of P l a s t i c s . J. A L E X N E U M A N N a n d F R A N K J. B O C . K H O F F . viii -{- 2 7 9
p a g e s . Reinhold P u b l i s h i n g C o r p . , 4 3 0 Park Ave., X e w York 2 2 , Ν . Υ. 1 9 5 9 . $7.25. C o m p r e h e n s i v e t r e a t m e n t of t h e subject covers latest materials a n d w e l d i n g t e c h niques for engineers a n d m a n u f a c t u r e r s . C u r a r e a n d C u r a r e - L i k e Agents.
D. Bo-
V E T - N I T T I , a n d G . B. M A R I N I - B E T T O L O .
xi -}- 4 7 8 pages. D . V a n N o s t r a n d C o . , 120 Alexander St., Princeton, N . J . 1959. $15.75. Proceedings of t h e I n t e r n a t i o n a l S y m p o sium o n C u r a r e a n d C u r a r e - L i k e A g e n t s h e l d u n d e r t h e auspices of U N E S C O i n Rio d e Janeiro, August 1957.
• his versatile* finely divided cellu lose today is saving time and money both as a filter aid and as a process ing iiivj. m many inciiis cries. When used as a filter aid, these advantages are gained: More eco nomical volume of clarified filtrate, trapping even the tiniest suspended solids . . . a stable pre-coat that does not "bleed".. . no cake loss due t o pressure drop . . . and no abrasion of pumps and valves. With SOLKA-FLOC there is a minimum retention of fil trate in the filter cake. It is a power ful adsorbent for iron, copper and other impurities. Valuable solids can
b e r
