THE AUTHORS X - R a y Diffraction
R a m a n Spectroscopy Benjamin Post, assistant professor of physics a t Brooklyn Poly, is also an associate editor of A S T M . His chief technical fields are chemical crystallography, high a n d low temperature x-ray diffraction methods, powder metallurgy, a n d structures of refractory materials and he has published a b o u t 30 papers. H e was educated a t C C N Y and Brooklyn Poly, taking a P h . D . in '49.
Isidor Fankuchen, professor of applied physics a t Brooklyn Poly, claims Brooklyn as his home town, though lie went to school a t Cooper Union, Cornell, a n d Manchester, Cambridge, a n d London, England. H e then became a research fellow a t M I T a n d H a r v a r d medical school a n d afterward assistant professor a t Minnesota's medical school. Later he was director a t Anderson I n s t i t u t e for Biological R e search. I n 1942 he returned to Brooklyn Poly as adjunct professor. H e is credited with approximately 85 publications and one p a t e n t . H e was t h e first president of t h e American Crystallographic Association a n d is t h e American editor of Acta Crystallographica.
PLASTICS FOR SCIENCE — ALL POLYETHYLENE
POLY-HAND PUMP to empty drums, carboys and any other container in a jiffy
STANDARD TAPER "NO-FREEZE"
POLYETHYLENE STOPPERS WIDE MOUTH BOTTLES Polyethylene, lightweight 50cc to 500cc and heavyweight 5cc to 1 80cc with Polyethylene Screw caps. RADIALLY RIBBED
POLYETHYLENE BEAKER COVERS and other products
of Polyethylene,
and other
PRODUCTS West N e w York, N . J .
Circle No. 16 A-1 on Readers' Service Carl, page 63 A
16 A
Advertised Products Guide Directory of scientific apparatus, glassware, instruments, reagent and research chemicals, laboratory furniture and equipment, electronic devices and component parts advertised in ANALYTICAL CHEMISTRY during past 1 2 months. S e e Page 37 A
ORGANIC CHEMICALS REAGENTS
INDICATORS Phenazine Phloroglucin Purpurin Quinalizarin Reinecke Salt Tetralone (a) Thioacetamide Thionalidc
Dipyridyl («»«') Dithizone Glyceraldehyde Hippuric Acid M a Ionic Acid Murexide Ninhydrin Orcinol
Alkylureas An. throne Cellobiose Chloralose (a) Dianthrimide Digitonin. Dihydroxyacetone Dimedone
p-Aminoacetophenone p-Bromomandelic Acid p-Bromophenacyl Bromide Catechol Violet m-Cresoxyacetic Acid Cycloheptanone Diacetyl Monoxime Dichloro fluorescein Diethylarnmonium Diethyl dit hi ocarbamate p-Dimetbylaminoazobenzene p-Dimethylaminobenzalrhodanine Dimethylglyoxime & Na Salt 2,9-Dimethyl-o-Phenanthroline 2,4-Dinitrobenzaldehyde 3,5-Dinitrobenzoyl Chloride 2,4-Dinitrofluorobenzene 2,5- & 2,6-Dinitrophenol 2,4-Dinitrophenylhydrazine
s-Di phenyl carbazi de Hydroxybutyric Acids 2-(o-Hydroxy phenyl) benzoxazole 9-Methyl-2 I 3,7-Trihydroxy-6Fluorone Naphthoresorcinol p-Nitrobenzeneazo-e-Naphthol p-Nitrobenzeneazoresorcinol p-Nitrobenzenediazoaminoazobenzene 0-Nitroso-a-NaphthoI o-Phenanthroline Sodium Cathechol Disulfonate Sodium Diethyldithiocarbamate Sodium Tetraphenylboron Tetrahydroxyquinone 2-Thenoyltrifluoroacetone Thymolphthalein ToIuene-3 f 4-Dithiol
plastics
For catalog, or made to order items, write
4 9 1 7 Murphy Place
SOCIETY.
Inquire for other compounds.
Luette, Vinyl, Acetate
AT YOUR LABORATORY DEALER
BEL-ART
E. J. Rosenbaum, who has published approximately 25 papers in t h e field of spectroscopy, is chief of t h e spectroscopic section, research a n d d e velopment d e p a r t m e n t a t S u n Oil Co., Norwood, P a . His special interest is t h e application of spectroscopy t o determination of molecular structure a n d t o chemical analysis. H e is a past president of t h e Society for A p plied Spectroscopy, a member of the Optical Society of America, and chairman of A S T M Committee E-13 on Absorption Spectroscopy, in addition t o being active in t h e Philadelphia Section of t h e AMERICAN CHEMICAL
EASTERN CHEMICAL 32 SPRING STREET
CORPORATION NEWARK 4, N. J.
Circle Nos. 16 A-2, 16 A-3 on Readers' Service Card, page 63 A
ANALYTICAL
CHEMISTRY
