= BEYOND THE FLYLEAF =
MILTON Roy PUMPS
Pumping Difficult Materials
lion of reports on throe studies conduct CM! by the association. I t includes pleas for more laboratory and experimental teach ing of science; more time for science teachers to plan and conduct demonstra tions and experiments and t o care for and maintain laboratory equipment; and better professional training of science teachers. Copies are available from Robert H . Carleton, Executive Secretary. National Science Teachers Association. 1201 Sixteenth St., N . W.. Washington 6, D . C.
Pumping Corrosive Materials
Sucrose
Controlled V o l u m e Pumping Pumping in Small Volumes
For:
Pumping a t High Pressures
Utilization
"The Utilization of Sucrose b y the Mammalian Organism," by Walter W. Wainio, assistant research specialist at the Bureau of Biological Research Rut gers University, has been issued as N o . 12 of the Scientific Report Series of Sugar Research Foundation, Inc., 52 Wall St.. N e w York 5, Ν . Υ.
M i l t o n Roy Pumps are available i n standard Simplex and Duplex types, also i n special " g a n g " units t o handle u p t o 10 streams i n exact ratio. Liquid ends are non-clogging and self-cleaning, i n materials o f construction, i n cluding plastics, for practically a l l corrosion resistant requirements. Ask f o r Catalog 146.
Tennessee Labor
miLTon Roij company 1303 E. MERMAID AVE., CHESTNUT HILL, PHILA. 18, PA.
WEBCELL CONTINUOUS D I A L Y S E R S
The fourth volume, o n labor, of the new edition of "Industrial Resources of Tennessee" has been issued b y the Ten nessee State Planning Commission, 432 Sixth Ave., North, Nashville 3, Tenn. Other volumes in the series were an nounced in these columns April 11. They are $1.00 each.
π
Chemistry.
DIALYSIS MAY BE THE SOLUTION OF YOUR PROBLEM TO AVOID STREAM POLLUTION AND TURN LIQUID WASTE INTO PROFIT Industries e m p l o y i n g certain liquid solutions i n their process are confronted w i t h t h e problem o f stream p o l l u t i o n in the disposal o f waste. Dialysis m a y be the solution for y o u , as it has for others, t o a l o w cost m e t h o d o f preventing stream pollution —plus t h e saving o f t h e cost o f a neutralizing agent a n d a profit from waste t h r o u g h recovery» The process is n o w i n p r o f i t a b l e o p e r a t i o n i n m a n y fields f o r t h e : RECOVERY O F ALKALIS & ACIDS · ' R E M O V A L O F ACIDS, ALKALIS O R OTHER N O N - W A N T E D MATERIALS · PURIFI C A T I O N O F SOLUTIONS · M A N U F A C T U R E O F BY-PRODUCTS
LABORATORY
MODEL
For experiment work in the study o f dialysis. The model is made of lucite a n d clearly shows the action o f transfer and separation. The results obtained can be closely translated into terms o f expec tancy from the larger production unite. for further
information,
w r i t e for bulletin 5 6 .
BRUSHES MACHINE COMPANY INC. 50 CHURCH STREET
8100
(Cob,c A d d t s > ' - BROMACHJ " f : I' f ' Μ Ο Ν Ε DIGBY 9 3 b O ( J
N E W Y O
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7, Ν. Υ.
C H E M I C A L
n
New Books
The Alchemists.
TYPICAL LARGE BATTERY INSTALLATION OF WEB CELL OIALYSERS IN VIS COSE RAYON P U N T FOR THE RECOVERY OF CAUS TIC SODA
Resources
Founders of Modern
F . S. TAYLOR,
Χ +
246
pages. Henrv Schuman, Inc., N e w York 21, Ν . Υ. $4.00. Conveyors and Related Equipment. 2nd edition.
W. G. H U D S O N ,
vii - f 468
pages. John Wilev & Sons, Inc., N e w York 16, Ν . Υ . $7.00. Experimental P h y s i c s for Colleges. W. A. SCHNEIDER AND L . B. H A M .
Revised
edition, xii -f- 442 pages. Macmillan Co., 60 Fifth Ave., N e w York, Ν . Υ. S3.80. Introduction to Radiochemistry. GERHARDT FRIEDLANDER AND J. W. KEN NEDY, xiii + 412 pages. John Wiley & Sons, Inc., N e w York 16, Ν . Υ. $5.00. Ion Exchange. Theory and Applica tion. F. C. NACHOD, editor, xii - f 411 pages. Academic Press, Inc., N e w York 10, Ν . Υ . $8.50. Modern Science a n d i t s Philosophy. PHILIPP FRANK.
324 pages.
Harvard
University Press, Cambridge 38, Mass. $4.50. Oil! Titan of the Southwest. C . C. RISTER. 490 pages. University of Oklahoma Press, Norman, Okla. $5.00. T h e Terpenes. V o l . II. T h e Dicyclic Terpenes and Their Derivatives. 2nd edition.
SIR J O H N S I M O N S E N .
xii -f-
619 pages. Cambridge University Press, N e w York 10, Ν . Υ. $8.50. Tin. I t s Mining, Production, T e c h nology and Applications. C. L. M A N TELL.
A C S Monograph N o . 51.
2nd
edition, χ -f 572 pages. Reinhold Pub lishing Corp., N e w York 18, Ν . Υ . $10. A N D ENGINEERING
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