N A T I O N A L
A P P L I A N C E
NEW BOOKS Radioisotopes in Scientific Research. Vol. I I . Research w i t h Radioiso topes in Chemistry a n d Geology.
R. C. Extermann, Editor, xxi + 741 pages. Pergamon Press, Inc., 122 East 55th St., New York 22, Ν. Υ. 1958. $22.50 (set of four volumes,
COMPLETE CATALOG No. 160 National Appliances manufactures over 100 different items of laboratory appa ratus for use wherever controlled en vironment is required. Latest advances, refined in National's test laboratory, have been incorporated to meet the spe cific demands of expanding programs in the fields of Education, Research, Medicine and Industry.
NATIONAL A P P L I A N C E COMPANY
SINCE
• OVENS, over 50 models • VACUUM OVENS, 4 models • INCUBATORS, over 20 models • WATER BATHS, 15 models • PIPETTE WASHERS • INOCULATION HOODS • INSPISSATORS • DAIRY LAB APPARATUS
1918
National Appliance Co. 7634 S.W. Capitol Hy. · Portland 19, Ore.
Write today for FREE Catalog No. 160
Eastern Sales: H. Reeve Angel & Co., Inc. 9 Bridewell PI. · Clifton, N. J.
N A T I O N A L
A P P L I A N C E
Circle No. 62 on Readers' Service Card
HALOGEN QUENCHED GEIGER COUNTERS at organic counter prieBS Non-corrosive ·
Non-photosensitive
— 5 0 ° C to 2 2 0 ° C operation · Infinite Life
(3 χ
Avg.
10'°
counts)
·
1-2%
Plateau Slope RCL halogen counters are 1 0 0 % gas
The second of four volumes on the proceedings of the International Con ference contains 53 papers covering or ganic chemistry, analytical chemistry, physical chemistry, geophysics, and pro duction of radioisotopes.
Radioisotopes in Scientific Research. Vol. III. Research with Isotopes in Human and Animal Biology and Medicine. R. C. Extermann, Editor. xxi + 763 pages. Pergamon Press, Inc., 122 East 55th St., New York 22, Ν. Υ. 1958. $22.50 (set of four volumes, $80). The third of four volumes on the proceedings of the International Con ference contains 59 papers covering pharmacology; thyroid, iodine metab olism; lipidemetabolism ; blood and blood proteins; nucleic acids; protein and amino acid metabolism; metabo lism in brain and nervous system, car bohydrate metabolism; and clinical physiology-reproduction.
Radioisotopes in Scientific Research. Vol. IV. Research with Isotopes in Plant Biology and Some General Problems. R. C. Extermann, Edi tor, xxi + 690 pages. Pergamon Press, Inc., 122 East 55th St., New York 22, Ν. Υ, 1958. $22.50 (set of four volumes, $80).
efficient; unaffected by temperature ex tremes or discharge; and because of their ηοη-photosensitîvity can be used *ι
open
daylight
with
no
spurious
counts a d d e d . RCL halogen counters come in seven models, five sizes. Pictured at left are general purpose thin wall,
mica window
and
The last of four volumes on the pro ceedings of the International Confer ence contains 52 papers covering min eral metabolism; fission products me tabolism in soils, plants, and mammals ; nutrient assimilation in plants; trans location in plants; photosynthesis; plant biosynthesis; and plant metab olism.
civil
defense counters.
RADIATION COUNTER LABORATORIES Nucleonic Park
For
RCL's complete
inc.
·
tector line,
Skokie, Illinois, U. S. A. ORchard 3*8700 Circle No. 103 on Readers' Service Card
82 A
information
ANALYTICAL CHEMISTRY
on de write
Dept. 2129
Kunststoff-, Lack-, und GummiAnalyse. Chemische und Infrarotspektroskopische Methoden. Tafelband. Dieter Hummel. 183 pages. Carl Hanser Verlag, Munich 27, Germany. 1958. 148 DM.
