THE AUTHORS
5 0 TONS OF PRESSURE
owerful enough to crush α piece of granite—sensitive enough to crack an eggshell without breaking the egg—that's the 50-Ton capacity W a b a s h Hydraulic Laboratory press's rugged 4-column design for uniform pressure. Thermostatically-con trolled, heated platens have precision ground surfaces. 7" stroke. Daylight opening adjustable to \SVin (longer col umns to order). Two 50-ton models—the 5 0 - 1 5 has 1 2 " χ 1 5" platens, the 5 0 - 2 4 has 1 8 " χ 2 4 " platens. Both available for manual operation or motorized. Ideal for lab work, pilot runs, light production, Perkin-Elmer method, etc. Send for catalog showing the modern W a b a s h Jine, giving applications and listing users.
P
Makers of Wabash Platens—Electric or Steam Heated—Water Cooled.
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Presses from 3 fo 50-tons.
Wabash Metal Products Co. 1556 MORRIS ST.,
WABASH, INDIANA
For further information, circle number 30A-1 on Readers' Service Card, page 87 A
New... AUTOMATIC PROCESS REFRACTOMETER provides end-point control through continuous stream analysis For laboratory, pilot plant, or process — where refractive index of process yield is on indication of product analysis. The new PHOENIX Automatic Process Refractometer pro vides accurate quality control of chemical and petroleum yields. A small quantity of the desired fluid (liquid or gas), placed in a comparison cell, acts as the reference for a zero-point determination of refractive index between the reference and process fluid. Refined, self-nulling opticalservo system requires no electrical feedback from the process. The small, continuous flow of process fluid through one half of the reference cell provides all control stimuli. Output signal is essentially linear, simplifying integration into present or proposed systems. W i l l actuate most re cording and d a t a processing equipment. > FREE BULLETIN R1000 . . . describes six different modefs available. A functional b/oclc diagram and a technical de scription of the opfica/-servo system are included. Yours on request*
PPI PHOENIX PRECISION INSTRUMENT C O . 3805
N.
5th STREET
P H I L A D E L P H I A
DEPT. 40,
A
P E N N S Y L V A N I A
For farther information, circle number 30 A-2 on Readers' Service Card, page 67 A 30 A
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ANALYTICAL CHEMISTRY
Robert Cox is a chemist in the Micro scopical Laboratory, Bound Brook Research Center, American Cyanamid Co. His work includes electron microscopy and various types of in dustrial light microscopy. He re ceived his education at the Pennsyl vania State University, acquiring a B.S. in chemistry with emphasis on chemical microscopy. He is a mem ber of the ACS, New York Society of Electron Microscopists, and the New York Microscopical Society. His avocational interests include the microscopical study of minerals and sands.
Charles A. Reilly
Robert Cox
Nuclear Magnetic Resonance Spectrometry Charles A. Reilly, physicist with Shell Development Co., was born in Summerside, Prince Edward Island, Canada. He received his under graduate education at Prince of Wales College, Charlottetown, P. E. I., Canada, and at Dalhousie University, Halifax, N. S., Canada. His graduate work was completed at Dalhousie and Harvard Universities with the award of a Ph.D. in chemical physics from the latter. He was a Degaussing Experimental Officer in the R.C.N.V.R. during World War I I and an assistant professor of chemistry at Dalhousie 1949-1951. He has several publications concerned with various aspects of N M R spec trometry.
Microbiological Assays S. H. Hutner is a staff member of Haskins Laboratories, a nonprofit research laboratory founded by C. P. Haskins, now head of the Carnegie Institution of Washington. He ob tained his doctorate in microbiology in 1937 from Cornell; J. B. Summer, the late enzymologist, under whom he minored in biochemistry, encour aged him to apply microbiological assays to biochemical problems, as did Clive McCay to problems of animal nutrition. He is a member of the editorial board of the Journal of Protozoology, co-editor with André Lwoff of Vol. I I of "Biochemistry and Physiology of Protozoa," and a member of the ACS.
