Nineteenth Colloid Symposium Boulder, Colo., June 18 to 20, 1942 l)i.i{->iTi«>\. Stev e n s H o t e l . C h i c a g o . 111.. N o v e m b e r 17 t o 22. 1012. N INKTKKN 1H N \ T I « i \ \ | . Coi.l.oil) SVMI'tisiiM. I >ivi>inii of Colloid C ' h e m i s t r y . F n i v e r s i t y of ( ' o l o r a d o . B o u l d e r . C o l o . . J u n e IS t o 2 0 . 1012.
O t h e r Scienti fie societies AMKHICW A»ori\riD\ mPm>n> T K \. S t a t e ( 'ollege. P e i m a . . J u n e 2."i t o 2 7 . AMKHK'W iNSTnTTi: OK Kl.K«TUir\l. KM.INKKUS. C h i c a g o , 111., .June 2 2 t o 20. A.MKKK AN FllATIIKK Cll EMISTS Ass«»TIMi M \ T E R I A I . S . A t l a n t i c C i t y , N. J . . J u n e 2 2 t o 20. KASTERN
P H O T O I ; I . A > T I < ITY ( ' U N K K U K N C K .
F n i v e r s i t y Cluh. Huston, Mass., 20 Semiannual meeting. INSTITITK
OK
FOOD
of
TECHNOLOGISTS.
AMI.UKW
in
CHEMICAL
AND F N O I N E K K I N O
N E W S throe times a y e a r usually F e b r u a r y 10. M a y 10, a n d O c t o b e r 10. T h e latest list, is p r i n t e d o n page 001 of t h e M a y 10 issue. 684
June 18, 2:00 P. M. BYRON
T. SHAW.
The
Nature
of
Colloidal C l a y a s R e v e a l e d b y t h e F l e c t n»n M i c r o s c o p e . .").
('IIKMK'M. S O -
JOHN
II. H i . o M y r i s r AND W E S L E Y
(I. FRANCE. Adsorption at CrystalSolution I n t e r f a c e s : An F l e c t i o n Diffraction St inly of ( ' r y s t a l F a c e s of S o d i u m Bromate with and without Adsorbed Dves. li.
HARRY
B. W K I S E K .
W. ().
MII.I.I-
< ; \ N , A N D W . ( '. S I M P S O N . T h e Fliminalioii of S o r p t i o n - D e s o r p t i o n H y s t e r e s i s . 7.
L.
II.
HEYEKSOX
AND
MARTIN
FINKS. Adsorption of Propane and P r o p y l e n e b v Silica ( l e i a n d M e t a l l i z e d Silica C e l . s. T . II. JAMES. I n f l u e n c e of A g e and S u r f a c e C o n d i t i o n s on t h e R e a c t i v i t y of ( ' e r t a i n P r e c i p i t a t e s .
For room reservations, write t o t h e respective hotels, m e n t i o n i n g that y o u a r e p l a n n i n g t o a t t e n d t h e < 'olloid S y m p o s i u m at t h e u n i v e r s i t y . B l . m c h a r d ' s L o d g e is s i t u a t e d three a n d o n e - h a If miles u p B o u l d e r ( ' a n y on a n d h a s b o t h r o o m s a n d c o t t a g e s a v a i l a b l e at p r i c e s r a n g i n g from §1.2."> s i n g l e t o & i . 0 0 double. Kstes Park a n d Kstes P a r k Village a r c o l m i l e s t o t h e n o r t h w e s t of B o u l d e r o n a beautiful, paved, easy ascent m o u n t a i n h i g h w a y , a n d D e n v e r is 3 2 m i l e s s o u t h east o n a p a v e d , p l a i n s h i g h w a y , ( ' m o d h o t e l s a r e a v a i l a b l e at b o t h p l a c e s . T h e B o u l d e r , K s t e s P a r k , or D e n v e r C h a m b e r s of C o m m e r c e will h e p l e a s e d t o s e n d d e s c r i p t i v e l i t e r a t u r e , a n d lists of h o t e l s and cottage camps on request. For information regarding t h e symp o s i u m , a d d r e s s 1-rank K. K. C i c r i i i a n u , D e p a r t m e n t ot C h e m i s t r y , F n i v e r s i t y of Colorado, Boulder, Colo.
III.
Colloidal Electrolytes June 19, 9:30 A. M.
0. C . I-:. M A R S H A L L . T h e ( ' l a v s as Colloidal Fleet rolytcs. 10. F . L. M< B A I N . M i g r a t i o n D a t a in Solutions of a C o l l o i d a l Flectrolyte. L a u r y l S u l f o n i c Acid. II*
JAMES
W.
MCBAIN.
Osmotic
P r o p e r t i e s of S o l u t i o n s of T y p i c a l C o l loidal F l e e t r o l v t e s . 12. HANS M. CASSEL. Surface Tension of M i c e l l e - F o r m i n g S o l u t i o n s .
IV. hi.
Protein Chemistry
F . A. H A T S E K AND .1. Y . K A O .
M e e l i a i i i s m of R u b b e r L a t e x tion at Low T e m p e r a t u r e s .
The
Vulcaniza-
June 19, 2:00 P. M. II.
C.. I-:. B O Y D A N D YV. D .
HAKKIXS.
Protein Films. Io.
Hi.
1.
Apparatus and Techniques June 18, 11:00 A. M.
1 . F It A N K F . K. ( i E KM A X X A XI) ( *. \V. MCLAXATIIEX. A M e t h o d of C a p i l l a r y !• liiorescence A n a l y s i s F m p l o v i n g a B a l anced Photoelectric Circuit. IIEKMXX
BENTAMS
AND
K.
LADISI.AIS
MARTON.
II.
NOKKIS. IIII.I.
Physical
AND YIKOINIA
II.
A. A B R A M S O X ,
I).
II.
MOORE,
10.
HAROLD
II. S T R A I N .
Problems
in
C h r o m a t o g r a p h y a n d in Colloid C h e m i s t r y I l l u s t r a t e d b y Leaf P i g m e n t s .
SI oil
§2 no $:* oo .si r>o
CHEMICAL
M.
AND I I . I I . (iETTXEK. A ( iCWUM'ili KleCtlOp h o r e t i c P a t t e r n in F x t r a c t s of P o l l e n s ('ausing H a y Fever.
Wrrm n 1 B\TH Single Double §1 2 5 § 1 00 $2 t)() §i o o
ROBERT
June 20, 9:30 A. M. is.
Applica-
t ions of t h e F l e c t i o n M i c r o s c o p e in ( ' o l l o i d ( 'heinist r\ .
B o u l d c r a d o Hotel A l b a n y Hotel Monticello
('IIAKI.ES
TREVORROW. N o r m a l V a r i a t i o n in t h e C o n c e n t r a t i o n of F i b r i n o g e n . A l b u m i n , a n d ( i l o h u l i n in B l o o d P l a s m a .
(J.
(IrsT.wsox. T h e T h e o r y and Applicat i o n s of a T w o - P a t h R e c t a n g u l a r M i c r o Klcctrophoresis ('ell. II.
A N D .I. K. Y E X O O R A D .
P r o p e r t i e s of L i v i n g M a t t e r . 17.
2.
H. B. D E A N
T h e Diffusion of Solubili/.ed D y e in W a t e r and t h r o u g h Membranes.
Program
1 T h e list of the S o r t K T C S N a t i o n a l Officers and D i r e c t o r s , Kditors, u i e m h e r s of Council. Divisional a n d Local Section Officers, C o m mittees, a m i C h a p t e r s of S t u d e n t Affiliates
appears
Inorganic Colloid Chemistry
I.
C I E T Y , u i l l b e i n i r r e s t e d in k n o w i n g of h o u s i n g facilities in a n d n e a r B o u l d e r . Farly reservations a r e advised since Color a d o i» a p o p u l a r v a c a t i o n c e n t e r , a l t h o u g h n o o n e k n o w s w h a t to e x p e c t in t h e w a y of t r a v e l t h i s s u m m e r . T h e F n i v e r s i t y of C o l o r a d o s u m m e r s e s s i o n , Usually e n r o l l i n g o v e r 1,000, p r o m i s e s t o h e large a n d n u m e r o u s c o n v e n t i o n s a r e s c h e d u l e d for B o u l d e r d u r i n g t h e s u m m e r months.
June
Hotel Nicollet. Minneapolis. Minn.. J u n e 1.") t o 17. A n n u a l m e e t i n g . S( IENT1KIC Al'I'ARATl S M \ l \ E R s < >K AMKUICA. Hotel Ilershcy. Hcrshey, Penna.. J u n e 1 t o A. Sot'IETY KoK TIIK PROMOTION K F.\i( A T I O X . Columbia Fniversity, New York. J u n e 27 and 2S.
the
II.
WITH
BATH
Single
Double
$2.50 SI 50 S2 OO 81.50
S.F50 $ 4 . 5 0 §.'{()() $2.50
A N D ENGINEERING
NEWS
20.
W I L L I A M G. S M I L E Y
AND A L L A N
K. SMITH. T h e Albumin Soybean Protein.
Fraction of
21.
L E O F R I E D M A N AND B . R O G E R R A Y .
A S t u d y of t h e Diffusion Velocity of Ovalbumin in Relation t o its Molecular Weight.
New England Chemistry Teachers to M e e t r
1 ^HE Fourth Summer Conference of t h e New England Association of C h e m i s t r y Teachers will meet a t t h e University of New Hampshire, D u r h a m , N . II., August 11 to 14. D u r h a m is on the Western Division, via Dover, of the Boston a n d M a i n e Railroad. F r e q u e n t service is available all d a y . Reasonable taxi service is available from Dover for those trains which do not stop a t D u r h a m . T h e D u r h a m railroad station is a two-minute walk from the* registration desk of the d o r m i t o r y . Bus service from Boston is also available. Telephone connections arc* available at J a m e s Hall (registration) a n d Congreve N o r t h (dormitory). All teachers of chemistry in a t t e n d a n c e a t t h e conference are required to register. T h e charge for members, if paid before August 1, 1912, is $2.00; if paid after August 1, 1942, $3.00. Nonmembers will pay $5.00. At the option of t h e regist r a n t , $3.00 of this fee m a y be used in p a y m e n t of dues for membership for one y e a r in t h e association. Nonprofessional guests of members or registrants will be charged $1.00 per family. R a t e s for rooms, $1.00 p e r night, $3.00 for four nights. Meals will cost about $1.25 per d a y . T h e committee will a t tempt to make a n y special rooming arrangements t h a t are desired, if it is notified in advance of t h e conference. All inquiries concerning t h e Fourth Summer Conference should be addressed t o t h e conference chairman, Millard W. Bosworth, Saxtons River, V t .
Program Tuesday Evening, August 11 7:30—Motion picture program. 8 : 1 5 — O F F I C E OF T H E P R E S I D E N T ,
versity of New H a m p s h i r e . 8 : 3 0 — A R T H U R R. D A V I S .
Uni-
Welcome.
Fire a n d t h e
Control of Fire.
Wednesday M o r n i n g , August 1 2 9:00—FRANK
G.
LANKFORD.
Experi-
mental Evidence on t h e Relative Value of Individual L a b o r a t o r y Work and t h e Demonstration Methods in T e a c h ing Science. 10:00—GORDON P . PERCIVAL.
Modern
Methods of Soil Testing. 1 1 : 0 0 — C A R L E R. H A Y W A R D .
a n d Physics Applied Metals from Ores.
Chemistry
t o Extracting
Wednesday Afternoon, August 1 2 2:00—LEALLYN
V O L U M E
B.
20;
CLAPP.
NO.
Sulfamic
10
»
»
Thursday Evening, August 1 3
Acid and I t s Uses. 3:00—JOHN
E.
CAVELTI,
Chairman.
Symposium—Atomic Structure. 4 : 0 0 — R o u n d Table Discussion. Laboratory vs. Demonstration.
Wednesday Evening, August 12 Education World.
W.
GERARD.
and
the
Science
Contemporarv
Thursday M o r n i n g , August 1 3 9:00 - C H A R I . E S I I . S T O N E .
to Successful Teaching. Reduction. 10:00-ALBERT
F.
Ouide Posts
Oxidation and
DA^CETT.
Spectro-
chemical Analvsis. 1 1 : 0 0 — W I L L I A M "O. BROOKS.
Friday M o r n i n g , August 1 4 9 : 0 0 - - E R N E S T (1. RITZMAN.
Calories in
Wartime. Inter-
ference Colors Reflected b y Thin Films. 11:00—C.
HAWLEY
CARTWRIC.HT.
In-
visible Glass.
Friday A f t e r n o o n , August 1 4 2 : 0 0 — J O S E P H J. SULLIVAN, S.J.
Glass
Blowing. 3:00—Symposium —Atomic S t r u c t u r e . 4 : 3 0 — R o u n d Table Discussion. T h e Effect of t h e W a r on Chemistry.
What the
Chemical Warfare Service I s Doing.
Thursday A f t e r n o o n , August 13 2 : 0 0 — F R A N K SCHNEIDER.
7:30—Motion picture program. 8 : 1 5 — R O B LEY D . E V A N S . A t o m Smashing a n d t h e Structure of Atomic N u clei.
1 0 : 0 0 — K A T H A R I N E B . BLODGETT.
7:30—Motion picture program. 8:15—RALPH
cal Demonstrations as a T e a c h i n g Tool. ^ 3:00—Symposium—Atomic S t r u c t u r e . 4 : 3 0 — R o u n d T a b l e Discussions. I. The Fused Course. II. T h e T e a c h ing of E l e m e n t a r y Organic C h e m i s t r y .
Microchemi-
Friday Evening, August 1 4 7:30—Motion picture program. 8:15—ALEXANDER
SILVERMAN.
Glass
T o d a y a n d Tomorrow.
Chicago Spectroscopy Conference Scheduled T TN*DER auspices of the Chemistry, Physics, a n d Astronomy Departments of t h e University of Chicago, a Spectroscopy Conference will be held a t t h e University of Chicago, J u n e 22 to J u n e 25. T h e program comprises a scries of more or less interconnected symposia, designed to promote t h e sharing of experience b y workers in various pure science fields in which spectroscopy is imp o r t a n t . E v e r y o n e is invited t o a t t e n d , b u t because of probable space limitations should write a t once to t h e conference chairman, R o b e r t S. Mulliken, Ryerson Physical Laboratory, University of Chicago, Chicago, 111., w h o will be glad t o supply further information a n d a copy of t h e final program. Registration and information headq u a r t e r s for t h e first d a y will b e in E c k h a r t Hall o n t h e Quadrangles, University Avenue near 58th Street, beginning J u n e 22 a t 8 : 3 0 A. M. H e a d q u a r t e r s hotel will b e t h e Windermere E a s t , 1642 E a s t 56th S t . , near t h e 63rd Street station of t h e Illinois Central Railroad. This hotel offers special rates of $3.00 single, $5.00 double (twin beds), all rooms with p r i v a t e b a t h s , t o those attending t h e conference. R o o m reservations should b e m a d e in a d v a n c e with t h e hotel direct. M A Y
25,
1942
The general conference c o m m i t t e e consists of Professor Mulliken, O. S t r u v e , J . Franck, a n d W. G. Brown.
Preliminary Program M o n d a y , June 22 9:30 A . M . R. S. M U L L I K E N .
Introduction t o the
Conference. SPECTROSCOPIC M E T H O D S H . G. G A L E , Chair-man
1. W . F . M E G G E R S . ard of Wave Length. 2.
W. E . WILLIAMS.
Primary StandM e a s u r e m e n t of
Standard W a v e Lengths by t h e Reflection Echelon M e t h o d . 3. H . G. B E U T L E R . Generalized T h e ory of t h e Concave Grating.
Monday, June 22 2:00 P. M . THE SPECTRA O F COMETS N . T . BOBROVNIKOFP',
Chairman
1. A. M C K E L L A R . Molecular B a n d s in C o m e t a r y Spectra: Intensity M e a s u r e ments. 2. P . S W I N G S . Molecular B a n d s i n Cometary S p e c t r a : Identifications. 685
2.
M o n d a y , June 2 2
3.
8:00 P. M . SPECTROSCOPIC APPLICATIONS O F A T O M I C BEAMS H. A. F I S H E R , K. R. .1. \Y.
T.
R.
ELVEY.
WILDT.
T h e L i g h t of
Geochemistry
of
the
W e d n e s d a y , June 2 4
the
9:30 A . M . TRIATOMIC SPECTRA
Atmosphere in Relation t o t h e Constitu tion of Terrestrial P l a n e t s .
Η. Η. N I E L S E N ,
Chairman
Tuesday, June 2 3
\Y. M E I S S X E R A. F I S H E R MACK K. W I L L I A M S
2:00 P. M . A T O M I C SPECTRA (T. S. M O N K ,
Tuesday, June 2 3
(). R. W I ' L P , F. L. W H I P P L E .
Chairman Meteors a n d
Chairman
Tuesday, June 2 3 6:00 P. M . Conference dinner.
the
Kurth's Upper Atmosphere.
Chairman
1. E . F . B A R K E R . Infrared S p e c t r a of T r i a t o m i c Molecules. 2. R. S. M U L L I K E N . Electronic S t r u c tures a n d Spectra of A 0 2 Molecules. 3. S. M R O Z O W S K I . Emission S p e c t r u m of t h e Ion C 0 2 ^ \
1. W. F . M E G G E R S . Atomic Spectra of t h e Rare E a r t h Elements.
9:30 A . M . THE STRUCTURE O F THE EARTHS ATMOSPHERE 1.
(\
Night Sky.
W e d n e s d a y , June 2 4 2:00 P. M . ELECTRONIC SPECTRA O F O R G A N I C MOLECULES K. F. H E R Z F E L D ,
Chairman
1. H . S P O N E R . Ultraviolet S p e c t r a of S u b s t i t u t e d Benzenes.
CHROMATOGRAPHIC APPARATUS DESIGNED
BY P R O F . Z E C H M E I S T E R
A N D DR.
CHOLNOKY
2.
W. H . R O D E B U S H .
Interpretation
of Ultraviolet Absorption Spectra in T e r m s of Resonance S t r u c t u r e s . 3. A. L. SKLAR. Theoretical S t u d i e s on Electronic Spectra.
"Chromatography," a new a n d extremely effective method invented by t h e Russian botanist Tswett, is for t h e separation and for the accumulation of natural products in extracts. The basic idea is that if a solution is sucked t h r o u g h a vertical column composed of a suitable adsorbent, the different solutes will be fixed in different sections of the column, according to their respective adsorption affinities. This separation be comes still more effective, if finally a p u r e solvent is sucked through the system. E a c h fraction so obtained c a n be used for any analytical or p r e p a r a t i v e operation, after having b e e n eluted from t h e a d s o r b e n t by a suitable solvent.
1. W. G. B R O W N . duction.
Complete methods of analysis h a v e b e e n thoroughly de scribed by Drs. Zechrneister a n d Cholnoky in "Principles a n d Practice of C h r o m a t o g r a p h y " (New York: John Wiley & Sons, Inc.), 1941.
9:30 A . M . ELECTRONIC SPECTRA O F O R G A N I C MOLECULES
W e d n e s d a y , June 2 4 8:00 Ρ, Μ . SPECTRA O F DYE MOLECULES W . G. B R O W N , 2.
L. G . S. B R O O K E R .
Thursday, June 2 5
G. W. W H E L A N D , 1.
E.
1 II III IV V VI
11 19 38 48 58 80
2.
3.
M. GOEPPERT-MAYER.
686
J-1663 EACH
J-1664 EACH
I il III IV V VI
2.50 3.25 4.00 6.25 7.60 12.00
3.50 4.25 5.00 7.25 8.75 13.50
3.50 4.25 5.00 7.60 9.00 14.00
4.50 5.25 6.00 8.60 10.25 15.50
PICKETT. RIEKE.
Electronic
Thursday, June 2 5 2:00 P. M . COOPERATIVE SPECTRA J . F R A N C K , Chairman S. E . S H E P P A R D . Influence of E n
1.
v i r o n m e n t a n d Aggregation Absorption Spectra of Dyes. 2.
G.
N.
LEWIS.
upon
Absorption
the and
Emission of Light as a F u n c t i o n of M o lecular Orientation.
Thursday, June 2 5
PRICES O F CHROMATOGRAPHIC TUBES J-1662 EACH
W.
S p e c t r a of Wurster's Salts.
10/18 19/22 34/28 45/35 55/35 71/40
J-1661 EACH
Chairman
A N D L.
R. S. M U L L I K E N AND C. A.
Τ
Size No.
CARR
Theoretical Studies o n Electronic S p e c t r a .
Connection
130 200 230 270 300 330
P.
Absorption Spectra of a Series of Dienes.
SIZES O F CHROMATOGRAPHIC TUBES Cylindrical Part M M . Diam. Length
Absorption and
Structure-Degeneracy in Dyes. 3. A. L. SKLAR. Q u a n t u m T h e o r y of D y e Spectra.
Four styles of tubes a r e available. J-1661 h a s a perforated plate sealed on the m a l e connection, tube is not graduated; J-1662 h a s a perforated plate a n d column is g r a d u a t e d in V2 cm. divisions; J-1663 h a s a sealed in fritted disc, tube is not graduated; J-1664 h a s a fritted disc sealed in a n d column is graduated in 1 / 2 cm. divisions.
SIZE N o .
Chairman
Historical I n t r o
8:00 P. M . SPECTRA O F I O N COMPLEXES 1.
P . P R I N G S H E I M , Chairman E . R A B I N O W I T C H . S p e c t r a of
Complexes. 2. S. F R E E D . Complex Ions.
C H E M I C A L
A N D
Ion
Spectra of R a r e E a r t h
E N G I N E E R I N G
NEWS
AGAIN
EXPANDS
Rapidly Increasing D e m a n d for A m i n c o Instruments Necessitates Still Further Plant Extensions VEKY YEAR sees new Aminco plant facilities. The most recent additions to the main plant have more t h a n doubled the company's E facilities, thus enabling Aminco to A C C E L E R A T E D E L I V E R I E S and serve its customers more efficiently than ever before. I t will pay you to investigate NOW the improved service Aminco has to offer by virtue of its new plant designed and built specifically for the efficient production of scientific instruments.
Specialists in Constant T e m p e r a t u r e Laboratory E q u i p m e n t r
i^HrD T R E N D is decidedly to Aminco for all laboratory procedures involving the use M- of constant temperature equipment, which is attested b y the ever-increasing patronage of the world's leading laboratories. When you use Aminco constant temperature equipment you arc not experimenting— you get equipment designed and built by specialists h a v i n g long and intimate knowledge of the problems involved in constant temperature applications — and you get equipment embodying many features, improvements and refinements that make for extreme precision, dependability, and highly satisfactory performance. Aminco constant temperature equipment will do for y o u what it has done for many others — step up the efficiency of your laboratory by making worth-while savings in time and money, and make possible improved laboratory methods.
The
Aminco
Constant Temperature Line Includes, in Both Statiflard and Custom Built Designs: Baths Cabinets Ovens Heaters Relays Thermoregulators Stirrers Pumps M a n o m e t r i c A p p a r a t u s for M i c r o - r e s p i r a t i o n ' ' S t u d i e s F U L L Y D E S C R I B E D IN C A T A L O G 41
Description
of
s t a n t Temperature Bath—One 1• ofC o nnumerous types of Aminco baths, with or without refrigeration, for maintaining temperature of the bath liquid constant to as close as ± 0 . 0 0 5 ° C. if desired. a2* Rt uerf er i Bg eartaht ewd i t hC oBnusitlat n- itn TP eummppe rfor Circulating Liquids T h r o u g h Other L a b o r a t o r y Apparatus—-For maintaining the bath1 temperature constant to as close as ± / 4 ° F.
Illustrations O Portable Constant Temperature *** B a t l x - c o o l i n g U n i t — F o r use in baths or tanks for maintaining the bath liquid at o r below room temperature, with a constancy of ± 0 . 1 ° or ± 0 . 7 5 ° F. A M a n o m e t r i c A p p a r a t u s for M i c r o ^ " • r e s p i r a t i o n S t u d i e s — F o r studies according to the methods of Warburg, Barcroft and others. Range: 20° to 50° C . Constancy as close as ± 0 . 0 0 5 ° C.
AMERICAN INSTRUMENT COMPANY ' Scientific Tnstrjumèizt Makers, foret Quarter Century mm ^mm&\
