ASSOCIATIONS

5
I ASSOCIATIONS Ψ Anachem Conference Association ôf Analytical Chemists (Anachems) will meet Oct. 26 to 28 at Wayne State University, Detroit. The program will include papers on absorp- tion and emission spectroscopy, gas chromatography, general instrumental analysis, elemental analysis, electromet- ric titrations, and general chemical analysis. Those wishing to present a paper should write to the program chairman, Sigurd O. Rue T Ethyl Corp., 160O West Eight Mile Road, Feradale 20, Detroit, Mich., by March 1, giving title and a 150—200 word abstract of the paper. Presentation of the 1959 Anachem Award for outstanding achievement in analytical chemistry will be made. The conference will include an exhibit of the latest lab instruments and equip- ment. The newly completed McGregor Memorial Conference Center will be the setting of the conference. ion Exchange Conference The Ion Exchange Conference, pre- viously held annually as one of the Gor- don Research Conferences, will ibe held independently this year at the Mountain View Hotel, Gatlinburg, Term., Sept. 7 toll. Program and procedure will be simi- lar to those or the Gordon Conferences, with informal discussions. Topics and discussion leaders are: New Ion Ex- change Materials, R. A. Mock; Ion Ex- change in Nonaqueous Solvents, R. M. Wheaton; Equilibria and Kinetics, G. E. Boyd; Ion Exchange in Nuclear B.eactor Engineering, S. C. Fur in an; Pharniaceu- tical Application, J. Gillin; Electrochem- istry of Ion Exchange Materials, G. Scatchard; Disposal of Radioactive Waste, T. Tamura. Frontiers in Chemistry The Frontiers in Chemistry lecture series will be held at Kresge Science Library Auditorium in Detroit on Mon- day evenings 7:15 to 9 P.M., beginning Feb. 23, extending through March, and two Mondays in April, one in May- Lecturers and topics follow: FEB. 23: CECIL L. WILSOIST. Prog- ress on Ultrarnicrochemistry. MAHCH 2: L. F. AUDBIETH. The Phosphonitriiic Compounds. MARCH 9: LLOYJD KOZLOFF. Mech- anisms of Viral Infection. MARCH 16: WILLIAM BAILEY. Thermostability of Unsaturated Com- pounds. MARCH 23: JAMES FRITZ. Non- aqueous Acid-Base Titration. APRIL, 13: E. SOR>,Î. The Progress in Sesquiterpene Chemistry. APRIL. 27: CHARLES OVERBERGER. New Reactions of Diazo Compounds. MAY 4: MAX ROGERS. Some Chem- ical Applications of Nuclear Magnetic Resonance. • National Council for Stream Im- provement will hold its 1959 annual ACS LOCAL SECTIONS meetings at the Waldorf-Astoria, New York City, Feb. 23 to 26. Several symposia are scheduled, among them one on Liquid and Atmospheric Waste Treatment and one on Atmospheric arid Liquid Waste Disposal Problems in t h e Pulp and Paper Industry. • American Paper and Pulp Associa- tion will hold its 82nd annual conven- tion, Feb. 22 to 26, at the Waldorf- Astoria, New York City. ^ Experieiics Is* Isidlustr** S^nn^îosiyiîî series will be continued March 31 at the University of Pennsylvania, Phila- delphia. Sponsors are the Philadel- phia-Wilmington section of American Institute of Chemical Engineers and the university's school of chemical engi- neering. The seventh annual all-day meeting will have as its topic New Advances in Chemical Engineering Practice. PLACE FEB. Ark-La-Tex* El Chico Restau- rant, Shreveport, La. Central Pennsylvania. Room 111, Boucke Bldg., Pennsyl- vania State University Cleveland (Analytical Group). Room 101, Smith. Chemistry Bldg., Case Institute of Tech- nology Eastern New York. Sterling- Winthrop Research Institute Florida (Orlando Subsection). Golden Room, T. G. Lee Dairy, Orlando Indiana. La Rue's, Indianapolis ( Noon luncheon ) Kansas City. Auditorium, Linda Hall Library Maryland. Bennett Hall, Balti- more Mid-Hudson. Vassar College, Poughkeepsie, Ν. Υ. Mobile-Pensacola. Auditorium, Fine Arts Bldg-, Pensacola Junior College, Pensacola, Fla. Mohave Desert. Maison Jaussaud Restaurant, Bakersfield, Calif. New York (Analytical Group). Hotel Roosevelt, N. Y. C. North Jersey. Srfou ΠΑΙΪ Uni- versitv Smith Cirance. ϊ*ί. Ι. ( Biochemical Group ) SPEAKER. 24 Clive M. McCay 23 Wm. E. McEwen 25 Cecil L. Wilson 24 26 24 23 27 25 26 23 27 C. Chester Stock J. W. Kcsîersôïî SUBJFECV Basic Science in the Attack Upon Senescence and the Diseases of Old Age Reduction of Organic Compounds by Lower Valent Species of Active Metals Anodically Gen- erated Microchemistry Experimental Cancer Chemother- apy Studies Citrus By-products Mr. Webster Takes Stock ( Organic Discussion Group ) (Physical Chemistry Group) Pittsburgh ( Coal Technology 25 Group ). Mellon Institute San Diego. Terrace Room, Lafa- 24 yette Hotel Southeastern Pennsylvania. Arm- 26 strong Cork Co., Research and Development Lab-, Lancaster Southern Arizona. Phoenix Col- 25 lege, Phoenix Southwest Louisiana. United 25 Gas Auditorium, Lake Charles Syracuse (Joint with Syracuse 23 Technology Club.), Syracuse Museum of Fine Arts Texas Aéik*—Bailor. Chemistrv 23 Bldg-, A&M Colfegé Toledo. University of Toledo 23 Wisconsin ( Upper Headwaters 23 Subsection ). First Methodist Church, Wausau Robert H. Maybury J. C. Bailar, Jr. C. Chester Stock Clive M. McCay John A. McBride George H. Morrison Ν^ D: Chero«»« L. O. Randall Edward C. Taylor Joseph A. Becker J. A. Simon John A. McBride R. D. Billinger John A. McBride Clive M. McCay David L. Douglas Cliviï M. McCay Re- Improving Science Teaching: Hex or Reflection? Stereospecific Effects in Coordina- tion Chemistry Experimental Cancer Chemother- apy Studies Basic Science in the Attack Upon Senescence and the Diseases of Old Age Development of Solid Propellants Solvent Extraction Chemistry in Analytical Warren W. Brandt Thomas A. Gover Mioroidentification of Oreanic Compounds The Pharmacology of Marsilid and Other Amine Oxidase In- hibitors New Heterocyclic Syndieses with Nitriles Some Absorption Characteristics of Hs and C2H2 on Single Crystals of W Coal Geology Development of Solid Propellants Publicizing the Chemist Through the History of Chemistry Development of Solid Propellants Basic Science in the Attack Upon Senescence and the Diseases of Old Age Radiocarbon Dating of Archaeo- logical Relics Basic Science in the Attack Upon Senescence and the Diseases of Old Age Gas Chromatography Radiation Chemistry of the Alkyl Iodides 88 C&EN FEB. 16, 195 9

Transcript of ASSOCIATIONS

Page 1: ASSOCIATIONS

I ASSOCIATIONS Ψ

Anachem Conference Association ôf Analytical Chemists

(Anachems) will meet Oct. 26 t o 28 at Wayne State University, Detroit . The program will include papers on absorp­tion and emission spectroscopy, gas chromatography, general instrumental analysis, elemental analysis, electromet-ric titrations, and general chemical analysis.

Those wishing to present a paper should write t o the program chairman, Sigurd O. RueT Ethyl Corp., 160O West Eight Mile Road, Feradale 20, Detroit , Mich., by March 1, giving title and a 150—200 word abstract of the paper .

Presentation of the 1959 Anachem Award for outstanding achievement in analytical chemistry will be m a d e . The conference will include an exhibit of the latest lab instruments and equip­ment . T h e newly completed McGregor Memorial Conference Center will be the setting of the conference.

ion Exchange Conference The Ion Exchange Conference, pre­

viously held annually as one of t h e Gor­don Research Conferences, will ibe held independently this year a t the Mountain View Hotel, Gat l inburg, Term., Sept. 7 t o l l .

Program a n d procedure will b e simi­lar to those or the Gordon Conferences, with informal discussions. Topics and discussion leaders are: New Ion Ex­change Materials, R. A. Mock; Ion Ex­change in Nonaqueous Solvents, R. M. Wheaton; Equilibria and Kinetics, G. E. Boyd; Ion Exchange in Nuclear B.eactor Engineering, S. C. Fur in an; Pharniaceu-tical Application, J. Gillin; Electrochem­istry of Ion Exchange Materials, G. Scatchard; Disposal of Radioactive Waste, T . Tamura .

Frontiers in Chemistry The Frontiers in Chemistry lecture

series will b e held at Kresge Science Library Auditorium in Detroit on Mon­day evenings 7:15 to 9 P .M. , beginning F e b . 23 , extending through March, and two Mondays in April, one in May-Lecturers and topics follow:

F E B . 23: C E C I L L. WILSOIST. Prog­ress on Ultrarnicrochemistry.

M A H C H 2 : L . F . AUDBIETH. The

Phosphonitriiic Compounds .

M A R C H 9: LLOYJD K O Z L O F F . Mech­

anisms of Viral Infection. M A R C H 16: W I L L I A M B A I L E Y .

Thermostability of Unsaturated Com­pounds.

M A R C H 2 3 : J A M E S F R I T Z . Non­

aqueous Acid-Base Titration. APRIL, 13: E. SOR>,Î. T h e Progress

in Sesquiterpene Chemistry. APRIL. 27 : C H A R L E S OVERBERGER.

New Reactions of Diazo Compounds. M A Y 4 : M A X ROGERS. Some Chem­

ical Applications of Nuclear Magnetic Resonance.

• Nat ional Council for Stream I m ­provement will hold its 1959 annual

A C S LOCAL S E C T I O N S

meetings at t he Waldorf-Astoria, N e w York City, F e b . 2 3 to 26 . Several symposia are scheduled, among them one on Liquid and Atmospheric Was te Trea tment and one on Atmospheric arid Liquid Waste Disposal Problems in t h e Pulp and Paper Industry.

• Amer ican Paper and Pulp Associa­tion will hold its 82nd annual conven­tion, F e b . 22 to 26, at t he Waldorf-Astoria, New York City.

^ Experieiics Is* Isidlustr** S^nn^îosiyiîî series will be continued March 31 at the University of Pennsylvania, Phila­delphia. Sponsors are the Philadel­phia-Wilmington section of American Institute of Chemical Engineers and the university's school of chemical engi­neering. The seventh annual all-day meeting will have as its topic New Advances in Chemical Engineering Practice.

PLACE F E B .

Ark-La-Tex* El Chico Restau­rant, Shreveport, La.

Central Pennsylvania. Room 1 1 1 , Boucke Bldg., Pennsyl­vania State University

Cleveland (Analytical Group). Room 101, Smith. Chemistry Bldg., Case Institute of Tech­nology

Eastern New York. Sterling-Winthrop Research Institute

Florida (Orlando Subsection). Golden Room, T. G. Lee Dairy, Orlando

Indiana. La Rue's, Indianapolis ( Noon luncheon )

Kansas City. Auditorium, Linda Hall Library

Maryland. Bennett Hall, Balti­more

Mid-Hudson. Vassar College, Poughkeepsie, Ν. Υ.

Mobile-Pensacola. Auditorium, Fine Arts Bldg-, Pensacola Junior College, Pensacola, Fla.

Mohave Desert. Maison Jaussaud Restaurant, Bakersfield, Calif.

New York (Analytical Group). Hotel Roosevelt, N . Y. C.

North Jersey. Srfou ΠΑΙΪ Uni-versitv Smith Cirance. ϊ*ί. Ι.

( Biochemical Group )

SPEAKER.

24 Clive M. McCay

23 Wm. E. McEwen

25 Cecil L. Wilson

24 26

2 4 2 3 27 25 26

23 27

C. Chester Stock J. W . Kcsîersôïî

SUBJFECV

Basic Science in the Attack Upon Senescence and the Diseases of Old Age

Reduction of Organic Compounds by Lower Valent Species of Active Metals Anodically Gen­erated

Microchemistry

Experimental Cancer Chemother­apy Studies

Citrus By-products

Mr. Webster Takes Stock

( Organic Discussion Group )

(Physical Chemistry Group)

Pittsburgh ( Coal Technology 2 5 Group ). Mellon Institute

San Diego. Terrace Room, Lafa- 2 4 yette Hotel

Southeastern Pennsylvania. Arm- 2 6 strong Cork Co., Research and Development Lab-, Lancaster

Southern Arizona. Phoenix Col- 2 5 lege, Phoenix

Southwest Louisiana. United 2 5 Gas Auditorium, Lake Charles

Syracuse (Joint with Syracuse 2 3 Technology Club.), Syracuse Museum of Fine Arts

Texas Aéik*—Bailor. Chemistrv 2 3 Bldg-, A&M Colfegé

Toledo. University of Toledo 2 3 Wisconsin ( Upper Headwaters 2 3

Subsection ) . First Methodist Church, Wausau

Robert H. Maybury

J. C. Bailar, Jr.

C. Chester Stock

Clive M. McCay

John A. McBride

George H. Morrison

Ν^ D: Chero«»« L. O. Randall

Edward C. Taylor Joseph A. Becker

J. A. Simon John A. McBride R. D . Billinger

John A. McBride Clive M. McCay

David L. Douglas

Cliviï M. McCay

Re-Improving Science Teaching: Hex or Reflection?

Stereospecific Effects in Coordina­tion Chemistry

Experimental Cancer Chemother­apy Studies

Basic Science in the Attack Upon Senescence and the Diseases of Old Age

Development of Solid Propellants

Solvent Extraction Chemistry

in Analytical

Warren W. Brandt Thomas A. Gover

Mioroidentification of Oreanic Compounds

The Pharmacology of Marsilid and Other Amine Oxidase In­hibitors

New Heterocyclic Syndieses with Nitriles

Some Absorption Characteristics of Hs and C2H2 on Single Crystals of W

Coal Geology

Development of Solid Propellants

Publicizing the Chemist Through the History of Chemistry

Development of Solid Propellants

Basic Science in the Attack Upon Senescence and the Diseases of Old Age

Radiocarbon Dating of Archaeo­logical Relics

Basic Science in the Attack Upon Senescence and the Diseases of Old Age

Gas Chromatography Radiation Chemistry of the Alkyl

Iodides

8 8 C & E N FEB. 16, 195 9

Page 2: ASSOCIATIONS

i

Another CIBA Service. .The ARALDITE® Epoxy Resin/Hardener Nomograph .. . A Handy New Idea For Determining Hardener Quantities Handy . . .S imple . . · Accurate . . . this unique aid will enable you to determine epoxy resin/hardener ratios instantly. Developed^ designed and tested by CIBA, the ARALDITE Epoxy Resin/Hardener Nomograph* is already proving its value in day-to-day formulating with epoxies. Here is another forward step in CIBA's progressivenogram of service, bringing the latest technical aids as well as hew'prqducts and reliable information to you. We will be pleased to send your ARALDITE Epoxy Resin/Hardener Nomograph without cost or obligation.

CIBA Products Corporation, Structural Resins Department CEN 2-9, Kimberton, Pennsylvania Please send without obligation the new ARALDITE Epoxy Resin/Hardener Nomograph.

| NAME •——

I I I

COMPANY,

ADDRESS_

CITY

jr iTt .E_

_STATE_

•Copyright applied -for.

C ί Β Α F I R S T IISI E P O X I E S

Page 3: ASSOCIATIONS

Who's for going onward and upward with

poîyureîh iGnes a l k y d resins waxes anti-rust addit ives greases defoamers?

tô#

W e m a y have something for you.

iiîic diols of hi^h/nolî Wc make iipopliiiic diois oi high yrnciccuiar wcignt. We make them by t h e ^ n k ca^/from a wide variety of raw materials—

fully saturated to fully unsaturated. They're purified by molecular dis­tillation to contain over 9 0 % glycerol monoesters of fatty acids.

The high monoester content and high purity of these distilled mono-gîycerides suggest some challenging possibilities. Such as: Reactants

• With diisocyanates to make polyurethanes of unusual structure and properties.

• With phthaiic anhydride to make alkyd resins free of chains termi­nated by diglycerides or diluted by nonreactive triglycerides.

• With esterifying, hydroxylating, oxyethylating agents.

Solubilizers • A distilled monoglyceride is one fat which will dissolve water! When

blended with other oils the mixtures also dissolve water and many* aqueous solutions. Some applications of this result in anti-rust and carburetor de-icing properties.

Consistency Controllers • The viscosity of many polymer dispersions can be reduced amazingly

by small additions of distilled monoglycerides. An outstanding ex­ample is tha t of alkyd resins in odorless thinner.

• Greases made with monoglycerides show stable consistency over a broad temperature range. The solids-liquids ratio usually remains constant from about 10 C below the melting point of the mono­glyceride down to the clouding point of the oil. The resultant greases contain no ash or inorganic material.

Surface Modif iers • Foam control, wax emulsifying—or something we haven't yet

thought of£

Is there a market here? You may know. For samples of these mono­glycerides and a full discussion of what we know of their properties, write îyisîiiïation Products Industries, Rochester 3, Ν. Υ. Sales offices: New York and Chicago * W. ΐνί. Gillies, Inc., Albert Smith Limited, Montreal and Toronto.

s!- · C.hsrîi»*

No statement or suggestion in this advertisement is to be consid­ered a recormnendation or inducement of any use> inanufacture or sale that may infringe any patent ηοιυ or hereafter in existence.

dssfillers of monoglycerides made from natural fats and oils

Also. . . vitamins A and Ε . . . some 3700 Eastman Organic Chemicals for science and industry

Distillation Products industries is a division of Eastman Kodak Company

|> Texti le Research Institute will hold its 29th annual meeting at the Hotel Commodore, Mew York City, March 23 and 24. Program will feature a full-day s> ijfiposium on melt-spun fibers.

• National Vitamin Foundation will hold its 14th annual meeting on March 3 a t the -Sheraton-East Hotel, New York City. Norman Jolliffe, director of t he Bureau of Nutrition, Depart­men t of Health, City of New York, will speak at t h e annual dinner. Featured at t h e meeting Λνίΐΐ be a symposium on absorption mechanisms and the malab­sorption syndrome.

• Louisville Paint a n d Varnish Produc­t ion Club will present a symposium March 2 on the Effect of Physical Characteristics of Whi te and Exterior Pigments on Paint Film Properties. T h e aïî-cîay meeting will be held at the Sheraton Hote l in Louisville. A fea­tured speaker will be Albert Zettle-moyer of National Printing Ink Insti­tu te .

• Manufacturing Chemists' Association will sponsor a conference on water and air pollution abatement by the chemi­cal industry in Cincinnati, March 18 to 19, at the Netherland Hilton Hotel. T h e conference has been set up primar­ily for chemical companies /pollution re­search specialists, and representatives of state and federal agencies; all inter­ested persons may register, however. Subjects will include capacity of streams to assimilate organic chemicals, equipment for biological oxidation, dernisters for sulfuric acid plants, and t h e like.

~ The Vïïïft Latin American Congress of Chemistry will be held in Mexico City, Mexico, March 29 to April 3. Program -will feature a symposium on Recent Progress in Organic Chemistry, with speakers from England, Argentina, Israel, and tfae U . S., and about 20 shorter papers on steroids and related natural products. Further information may be obtained from Alberto San­doval, Institixto d e Quimica. Ciudad Uriiversitaria, Mexico 20, E>.F., Mexico.

•Manufactur ing Chemists' Association will sponsor a. symposium on the pack­aging and transportation of chemical products at Cleveland Engineering and Scientific Center, April 29 and 30.

90 C & Ε Ν FEB. 16. 19 5 9

*?^9irL*II?Jls

Page 4: ASSOCIATIONS

what non υαιΙ uni ι J V M

do witlic^taPjv-M&e^o

nnii ... . aim itu

now available in commercial quantities

Latest news in intermediaries is beta-Propiolaetone (BPL) 5

a starting niâteriax witiL i€nisra«3.i-fiC versatility- . i? •?"£•;•» y» i*».t̂ Ck'rk * > " + ' "

that immediately suggests the synthesis of important new products. How can you use BPL—or its derivatives? I n starch emulsions?

In adhesives? In textile fibers^* Whyirot find out immediately? Write today for samples dtor your own evaluation, and for

technical Bulletin No. N-61 . Celanese Corporation of America, Chemical Division, Dept. 554-B, ISO Madison Avenue, N . Y* 16.

Celanese® BPL™.

J T Y P I C A L . P R O P E R T I E S ί O F C E L A N E S E

b e t a - P r o p i o I a c t o n e , w t , , % m in .

Phys ica l state Co lo r O d o r

! Bol i ln·" ' Point , de*** G= Re f rac t i ve index @ 2 0 ° C

ι S p e c i f i c gravity ® 2 0 / 2 0 ° C P o u n d s per ga l lon @ 2 0 ° C F lash po in t , Tag open cup,

1 ^ o . ^ C

B P L

97 j L i q u i d Co lo r less Pungen t ,

acry l i c 162 I

1.4131 1.14S0 ι 9.56

165 '

Export Sales: Amc&l Co., Inc., and Pan Amcel Co., Inc., 180 Madison Avenue, New York 16, Ν. Υ.

See Chemical Materials Catalog a n d Chemical Week Buyers' Guide for complete listing of Celanese Chemical Products.

F E B . 16, 1 9 5 9 C & E N 9 1

Page 5: ASSOCIATIONS

Vnur • u u i

fa h lofe rîn

controlled with unique Àlgin Products

i h o " T r i r f r • I I V I l

' if m i wan-S* u# h o n I U U f l U l i r = «V B a w i a

Want explosive disintegration7

You use Kelacid (highly ref ined alginicacid) plus a carbonate material.

Want a tablet o f high mechanical strength? Kelcoso! (fibrous sodium alginate) is the effective binder that produces high mechanical strength tablets, reduces capping.

Want rapid disintegration? Use Kelacid alone.

Want an effective binder and excellent disintegrator? Use Keltose (ammonium-calcium alginate).

Mr tablets that behave exactly as yeu want, ALGIN PRODUCTS may prove your answer

YOURS ON REQUEST: Free samples of KELACID, KELTOSE, and KELCOSOL plus Technical Bulletin fully describing the use of these unique and valuable algin products in tablet making. Included are percentages required and suggested formulations. Λ¥ΓΪΪΘ or phone your nearest Kelco regional office without obligation today·

KIUCIB», KELTOSE», KELCOSOL- K E L C ( J C O M P A N Y 120 Broadway, New York 5, N. Y.; 20 N. Wacker Drive, Chicago 6, Illinois; 530 W. Sixth Street, Los Angeles 14, Calif. Cable address: Kelcoalgin, New Yoik

ASSOCIATIONS

• Instrumental Methods of Analysis is the topic of a symposium to b e given by the analytical chemistry division of the Chemical Institute of Canada at Guild wood Inn, Sarnia, Ont., April 6 and 7.

^ Metionel Peckooine Exoosition^xand Conference will be held at thëi ln|§& national Amphitheatre in Chicago, April 13 to 17. Sponsor is American Management Association.

• The Chemical Society of the German Democratic Republic (East Germany), has scheduled the following meetings for 1959: Water Chemistry Profes­sional Association, April 16 to 18 at Weimar; Lecturers on Chemistry, Juno 24 to 27 at Halle; Professional Associa­tion for Process Techniques, Sept. 17 to 19 at Weimar; symposium on Silicates with Univalent and Bivalent Cations, Sept 30 to Oct. 3 at Berlin; meeting on analytical chemistry and the annual con­vention of the society Nov. 4 to 7 at Leipzig; symposium on corrosion Dec. 3 to 5 at Dresden. Symposia on olefin chemistry and on physical chemistry are planned, but dates and places have not yet been set.

• Institute of Physics will have a one-day symposium in London, April 17, on Current Developments in the Pro­duction of High Vacua. Wii te to the Secretary, Institute of Physics, 47 Bel-grave Square, London, S.W. 1, Kng-land, for further information.

^ American Oil Chemists' Society will hold its golden anniversary meeting at Roosevelt Hotel, New Orleans, April 20 and 22. Three symposia on fats and oils and industrial processing are being planned. Requests for reservation?? should σ ο to W ; Sr Singleton. Ohairrnan Reservations Committee, P. O. Bo; 7307, New Orleans 19, La.

CALENDAR OF E V E N T S

American Chemical Society 135th National Meeting» Boston, Mass.,

April 5-10, 1959. 136th National Meeting, Atlantic City,

N. J. Sept. 13-18, 1959. 137th National Meeting, Cleveland, Ohio.

April 5-14, 1960. Other Organizations Technical Association of the Pulp and

Paper Industry. 44th Annual Meeting. Commodore Hotel, New York, Ν. Υ. Feb. 23-26.

9 2 C & Ε Ν FEB. 16, 19 5 9