SOME RARE NEW OR&ANBC CHEMIOALS
Beyond
NOW
the Flyleaf Introduction to t h e Chemistry of the Sili cones. Eugene G. Rochoiv. χ -f- 137 pages. J o h n Wiley iso-Valeraldehyde B.P. 91.0 (CH3) 2 CHCH 2 CHO 93. δ
Ceiia
5O0g. 500 g. 500 g. 500 g. 500 g. 1 Kg. 1 Kg. 1 Kg. 1 Kg.
100 g. 100 g. 100 g.
NEW ORGANIC CHEMICALS A number of organic compounds heretofore unavailable except in the most limited quantities are in research or pilot plant scale production. Inquiries invited. G E N B S E E R E S E A R C H CORPORATION,
570 Lyell Ave., Rochester 6, Ν. Υ.
1077
B E Y O !\ D
Jtyaiu.
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tylosiaud. Silica Bcdt cwid GlotU BEFRASIl
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originally developed for aircraft jet insulation now offers to the Chemical Industries the following unusual properties: •
WITHSTANDS 2000° F.— and up to 5 0 0 ° F. higher for short periods —fusesatapprox. 3 1 0 0 ° F .
• C H E M I C A L RESISTANCE — not affected b y most commercial acids — does not combine with usual components of high temperature alloys even on long contact at 2 0 0 0 ° F. © EXTREMELY LIGHT W E I G H T — surface density approx. .05 lbs. per sq. ft. of approx. JHV' thickness. Bulk density, approx. 4 lbs. per cu. ft. • FIBER D I A M E T E R — O.0OO23 inches, average. • RESISTANCE T O V I B R A T I O N — not seriously affected by extreme high frequency, high amplitude vibration of aircraft jet motor tail pipes. • T H E R M A L CONDUCTIVITY — (graph on request) — at low temperatures— approx. y& thermal conductivity of standard insulating materials. A t 2 0 0 0 ° F . — by far the lowest of all materials available. • A V A I L A B L E FORMS — batt in rolls approx. 1 4 ' long b y 3 H 7 wide b y %Q" thick. Cloth in rolls of random lengths approx. 3 2 " wide b y 0 . 0 1 5 " thick. Tapes, sleevings, and cordage of various widths and lengths. Loose fibers in bulk. A l s o , insulating blankets fully prefabricated b y us t o specification, either permanent or removal.
FOR ENGINEERING COOPERATION ON ANY APPLICATION WRITE
THE H I . THOMPSON CO. Section 8-4, 1733 Cordova St. Los A n g e l e s 7', C a l i f . 1078
THE
the purpose of the book and is omitted. T h e discussion of control charts occupies more than three q u a r t e r s of t h e volume. The remaining q u a r t e r is devoted mainly to acceptance sampling plans with chapters on the economics of statistical quality control and o n the organization of quality control programs. Errors of fact a p p e a r to be almost entirely confined t o incidental statements apart from t h e main current of t h e argument and no one of t h e m is serious enough to deserve specific comment. One fact, recognized b y Mr. G r a n t , deserves greater emphasis a n d use. Much in t h e literature of quality control a n d some of the discussion in the present work could be simplified by making use of t h e fact t h a t a sample from a lot offers n o direct evidence on the quality of t h e remainder of t h e lot. T h e possible deductions a h o u t the uninspected portion of a lot a r e exactly those which can be obtained b y considering t h e uninspected portion a s another sample from the same process which produced the sample inspected. A knowledge of the existence of the control, chart m e t h o d a n d of purposefully designed acceptance sampling plans and, to a large extent, a n appreciation of their value were spread during the war. Some advances were m a d e during the war in control chart techniques, a n d several new and important acceptance sampling plans became available. Grant's discussion of control charts leaves nothing t o be desired in detail or coverage. With respect to sampling plans, comparable detail is physically impossible. Nevertheless, few presently available methods fail t o receive some discussion. Particularly i n h i s discussion of control charts, Grant h a s introduced problems tackled a n d solved in manufacturing plants. T h e presentation of the d a t a and the method of solution is followed b y a discussion of the principles involved, the generality of t h e method, and possible alternative a t t a c k s . More refined techniques which a r e n o t expected t o be part of the repertoire of the quality control engineer a r e not mentioned a s alternatives. "Statistical Quality Control" is designed as a textbook with a large n u m b e r of problems for t h e student a n d is, a t the same time, written at a level which is sure to make i t most popular a m o n g workers in the field and a m o n g others who should know w h a t statistical quality control has to offer.
K E N N E T H J . ARNOLD
FLYLEAF work the authors have discussed the use of penicillin in t h e various branches of medicine a n d surgery. Although there is a certain a m o u n t of repetition a n d some difference of opinion, there is uniformity of thought regarding t h e fundamental principles of penicillin therapy. T h i s is a good book a n d should be useful for senior medical students, interns, a n d practicing physicians. T h e paper is of good quality, and the binding of t h e best grade washable verminproof cloth.
H A R R I S O N F. F L I P P I N
Recent Groundwater Investigations in the Netherlands. . W. F. J. M. Krul and F. A. Liefrinck. 78 pages. Monographs on t h e Progress of Research in Holland. / . it. Houwink a n d J. A. A. Ketelaar, editors. Vol. V. Elsevier Publishing Co., Inc., 215 F o u r t h Ave;., New York 3, N. V., 1046. SI..r)0.
April
Industrial
Edition
Contents of the April issue of Industrial and Engineering Chemistry include: Construction and Design Laboratories Introduction.
Selection
of Research
L. A. WATT
of
Laboratory
Location.
R. W. C A I R N S
Design of Facilities for Research. P . C. SMITH
A Large Industrial Research Laboratory. D . M. B E A C H
Process Engineering Research Laboratory. G. M . D A R B Y , E . J. R O B E R T S , A N D J. E>. G R O T H E
University or College Laboratory. C. S. ADAMS
T h e Perkin Medal. Introduction. Synthetic Vitamins and •Human N u t r i tion.
Wartime
R . R. W I L L I A M S
Development
of Insecticides.
H. L . H A L L E R
Selection of Centrifuges for Chemical Processing.
J . C. S M I T H
Lignin for Reinforcing Rubber.
J. J .
K E I L E N AND A R T H U R POLLAK
Synthetic Lubricant Fluids from Branched-Clmin Diesters Physical and Chemical Properties of P u r e Diesters.
E. BRIEB, H. F. K I D -
D E R , C. M. M U R P H Y , AND W . A. Z i s MAN
Development of Additives a n d Lubricating Oil Compositions. D. C. A T K I N S , J R . , H . R. B A K E R , M U R P H Y , AND W . A. ZISMAN
C.
M.
A Small Grease K e t t l e . E . A. BERGMANN Synthetic Low T e m p e r a t u r e Greases from Aliphatic Diesters. G. M . H A I N , D . T . J O K E S , R . L. M E R K E R , AND W. A. Z I S MAN
Laboratory Machine for t h e Continuous Production of Grease. G. M . H A I N AND E. E . S T O N E
Octane Ratings of Agricultural
Motor
F u e l s . C . F . E L D E R , F . R. T H U R Y , A N D RICHARD W I E B E
Penicillin—Its Practical Application. Sir Alexander Fleming, editor, x + 380 pages. Blakiston Co., 1012 Walnut St., Philadelphia 5, Pa., 1946. S7.
Effect of Q u a n t i t y of Black a n d Softener
J- HIS book is n o t a continuous textbook on penicillin b u t rather a compilation of independent articles by a group of distinguished English contributors. I n this
Vapor Pressure of Pure Substances. O r ganic a n d Inorganic Compounds. D . R .
CHEMICAL
on G R - S . L. R . S P E R B E R G , L. A. B L I S S , AND J. F . S V E T L I K
Device for E v a u l a t i n g Surface Cracking of GR-S.
M . C. T H R O D A H L
STTJLL
Creaming Neoprene Latex.
H . K. L I V -
INGSTON
AND ENGINEERING
NEWS
