GUARANTEED 400,000 · 2005. 7. 19. · the new super duper It's a technical wizard. It's the...

Listen andLearn!

For the past six years, AAAS hasrecorded selected symposia at itsannual meetings, many of whichmay be within your professionalfield of interest. This fine collec-tion of audiotapes not only servesto enlarge the audience reachedby our annual meetings, but alsoserves as a valuable aid to edu-cation, particularly in classroomor seminar-type settings. Whynot send today for your freecatalog of audiotapes, arrangedby subject category?

Send catalog request to Dept. AT-1

AA A SAMERICAN ASSOCIATION for theADVANCEMENT of SCIENCE1515 Massachusetts Avenue, N.W.Washington, D. C. 20005

This Incubator-Shaker is

GUARANTEEDfor

400,000 MILESA 400,000-mile Guarantee for ashaker is really not much of abargain. In the life-span of anautomobile, 100,000 miles of usemay be a major achievement. But ashaking machine, used continu-ously, 24 hours a day, day-inday-out, runs the equivalent of100,000 miles in just 83.3 days.*And even then, NBS shakers are justgetting started. Although thisModel G25 Incubator-Shaker isguaranteed for 365 days (over400,000 miles), it has a life-expectancy of more than 10 years.Many are still in operation after 20years.

*(Based on an average auto speedof 50 mph 24 hours a day.)

ADVANCED FEATURES ...Longevity is only one of theattributes of the G25. This modelprovides electronic speed controlfrom 40 to 400 rpm (indicatedon a direct-reading tachometer).Temperatures from near-ambient to60'C are regulated within ±0.5°C.A main thermostat and a safetythermostat are employed. Tensionlock-knobs prevent accidental

4 NEW BRUNSWI1130 Somerset Street, Ne

With NBS, Adva

Circle No. 4 on Readers' Service Card

change of settings.When opened,a safety switchautomaticallyshuts off the shaker.

Write forcatalogNo. G25S/475

ICK SCIENTIFIC CO., INC.ew Brunswick, N. J. 08903 * 201/846-4600'nced Technology is a Way of Life.

Circle No. 72 on Reoders' Service Card

BeckmanPeptides

,K

;..,. "IFC,A.

#~~~ # D;

Luteinizing Hormone ReleasingHormone * Parathyroid Hormone(bovine 1-34 peptide) * AngiotensinPeptides * Somatostatin * Neuro-tensin * Thyrotropin ReleasingHormone * Bradvkinin * Tuftsin.analogs of Oxytocin. Vasopressin,Vasotocin * and many others.

Beckman -the source you cancount on for peptides of the highestpurity and consistently uniformactivity. Enjoy the convenience ofoff-the-shelf availability of twenty-five different peptides, with morebeing added all the time. For a com-plete listing, requLest Catalog PL-464

from Beckman'Beckmnan Instruments, Inc.,p,Wj/k Bioproducts Depart-

ment. 11 17 CaliforniaAve., Palo Alto, CA94306. Or call us at(415) 326-1970ext. 280.

The Source for Synthetic Peptides


Trace Metals Analyzer

The model 3010 will directly mea-sure lead, cadmium, and copper inblood, urine, and other materials. Afterpreparative chemistry, it will also deter-nmine other metals such as bismuth, tin,indiuLm, and thallium. Analysis is auto-matic and nondestructive. The operatorselects parameters including initial po-tential, final potential, sweep rate, re-corder set point, and integration testpoint which are displayed. The analysisis based on anodic stripping voltam-metry. Environmental Sciences Associ-ates, Incorporated. Circle 682.

Dilutor-Dispenser

Modiel ADP-30SD (Fig. 1 ) uses twoof three pUMp configurations: 2 to 20)0microliters, 20 to 1(000 microliters, and50)t) to 20).000 microliters. It is suitablefori atomilc absorption alndi enzyme anal-ysis and for repetitive volumetric op-erations as well as reagent preparation.Passaioes are nmade of reflon and Pyrex.With an accessory. the ADP-30SD canpick up from 2 microliters to 1 miilliliterand diluLte with 20 microliters to 2t)milliliters, which vields dilution ratiosup to 10,000 to Grummatn DataSystemls. Circle 683.

Fig. l. The ADP-30SD ofTers precisionand reproducibility better than one partper thousand. It is useful in radioimmuntlo-assay protocols.

Spectrophotometer Calibration

The Spectro-Standard standardiza-tion kit consists of an all glass filtersvsterm for checking and monitoringthe key performance parameters ofspectrophotometers. Wavelength, straylight, bandpass, and linearity are easyto check. Chemetrics Corporation. Cir-cle 688.

Electronic Balance

The PR70)0 is a dLual-range. top-loading balance with readability to 0..1grarn in the 0- to 700-gram range and0.01 gram in the 0- to 70-gramn range.Precision is + 0.005 gram and + 0.0`gram in the 700- and 70-graimi ranges,respectively. A touch bar controls on-off, tare and zero set and the range isselected with push-buttons. IThe re-sponse time is less than 2 seconids.Mettler InstruLmenits Corporation. Cir-cle 684.

Universal Test Stand

The UTSM-EL model is a tensilestrength tester that is also designed forcompression loads with a maxinmum ca-pacity of 5()0 pounds, 25t) kilograms.and 250 dekanewtons. The digital dis-plav will hold both peak force load andm1axiMum deflection. The display willread in English or metric units and out-puLt for recorder or plotter is standard.AccuLracy is to 0.25 percent of fullscale plus or minus one least signifi-cant digit. John Chatillon & Sotns.Circle 681.

Neswlysoffered instl-lumentation, aipparitts, andlahboraitory materials of initerest to rese.irchers itnill disciplitnes in ac.tdernic, indUstrial, and gov-iX nnient organizaitions at-e feati-red in this space.Fiipihasis is giveni to puirpose, chiel characteriistics,nd avsailabilios of produicts andi materials. Et-

drsFemient by Si tince or A AAS is niot iplicd(lAdditional information miav be obtainedl fiomi theIanufactit li-ers or stippliers named bs circling theappr opriate ntimhcr on the Readers' Service Ci cid(,,cc pages tl02A and 166() and placing it in themailb)x. Postage is free -RICHARD G. SioNINFR

SCIENCE, VOL. 188

/MOMMO/00///

I

thenewsuperduper

It's a technical wizard.It's the quickest, simp-lest and most reliableway to make the finestquality dupes, filmstrips,

L internegs, section-al blowups andsuper- impositionswithout guesswork

U Write today toget the full storyabout

the new, more versatileBOWENS ILLUMITRAN 3


Now! Painless ProductPhotography

TechnalTransi-Table

Assure shadow-free product shots.Reduce costly retouching. Frostedtranslucent plastic provides sweep-ing working surface. Sturdy frame-work, easy to assemble in minutes.Overall 63" high, 48" wide. Ideal forany studio.See your dealer or write for literature.

Fig. 2. Colordip has a tungsten light sourcein the probe head which with eight filtersand a fiber optic light system enables theoperator to dispense with cuvettes, samplepreparation, and problems caused by straylight.

Colorimeter

Colordip (Fig. 2) features a fiberoptic light system in the probe whichmeasures light in a fixed path length.Eight filters in the probe head coverthe range from 445 to 620 nanometers.The panel meter displays optical dens-ity and percentage transmission onseparate scales. Shandon Southern In-struments, Incorporated. Circle 685.

Nuclear Magnetic Resonance

Spectrometer

The EM-390 has a 21.14-kilogausspermanent magnet which is temperaturecompensated, thermostated, thermallyinsulated, and magnetically shielded.Proton sensitivity for 90 megahertzstudies is 50 to 1 (5-millimeter sample,1 percent volume-to-volume ethylben-zene) and there is no loss of inherentresolving power. Resolution is 0.5 hertzor less. The device has an integraltachometer and offers sweep ranges of0.2 to 100 parts per million. VarianInstrument Division. Circle 687.

Still

Autostill 1.5 is automatic. Power andwater cut off when the receiver is full.Operator selects either complete shutdown or cycling off and on as water isremoved from the receiver. The distil-late produced is pyrogen-negative with


$495.At lastayou canafford.

FEATURES:* 160 steps of programming* Algebraic operation* Complete set oftrig. functions

* Full size keys and display* AC/DC operation* One day service in 365 cities-7

Monroe, The Calculator Company550 Central AvenueOrange,NewJerseyO7051

Yes. I'm interested. Havea aIsalesman call and demonstrate.Yes. I'm interested. SendDIcomplete literature.

Name - Title _

Co. Name

Address

city State Zip

MONROETheCaluaCompany

L- S411 J


Let us give you a*-- - complement a copy

- | of our new catalog- 'Let P-L Biochemicals new Catalog 104 for 1975 complementa- *your work with its comprehensive listing of fine biochemicals

. - l aand valuable technical information. Whatever your scientific* - -|l l discipline, if your work calls for the use of biochemicals, P-L's

new catalog should be close at hand. You'll find awide variety of natural and synthetic DNA poly-

mers and RNA polymers plus enzymes,amino acids, carbohydrates, lipids, antibi-otics, buffers, and of course, nucleotidesand coenzymes. And it introduces a majornew listing of affinity chromatography ma-terials. You can depend on P-L's superbquality and excellent service to satisfy yourbiochemical needs at competitive prices.We invite you to compare - write P-L Bio-chemicals for your free catalog today.

I~~~P. , I1.-l tub>-li - IbbchemPLt s,iniWJ WEST MCKIEYAVENUE. MA4AKEE., NS 5320

a Tel: (414) 271-0667Cable: PL Biochem

Circle No. 133 on Readers' Service Card Circle No. 89 on Readers' Service Page

SCIENCE An Answer

for to YourMultidisciplinary

SOCIET-Y Information Needs. ..

If you are interested in science-society issues, you shouldknow about SCIENCE FOR SOCIETY: A BIBLIOG-RAPHY. This useful resource is prepared annually toassist users in understanding all aspects of the interrela-tionships of man, society, environment, science, andtechnology.The latest edition (Fifth Edition, 1974) contains some2,300 NEW and ANNOTATED references to books,journals, periodicals, organizations, and other sources ofinformation on:

a Science, Technology, and Society| Resources and the Environment* Health* Education* Conflict and Population

SCIENCE FOR SOCIETY is a valuable guide for teach-Hellma-the largest assortment of highest ers and students in secondary schools and in colleges,precision glass and quartz cells.s fo oo s

Standard Flow-through Constant-temperature as wllsss foriaysoprsons inrtEdin tsociet problemsorAnaerobic- Special Designs and iues.0 ouprescof the Fnvift nmhEonaen avalabe forAlso available-ULTRAVIOLET LIGHT SOURCESS R O a for te cDeuterium Lampsv Mercury Vapor Lamps Orders totalling less than $5.00 must be accompaniedHollow Cathode Lamps Power Supplies byyourremittance.

IA Write for literature Send orders to Dept. SEBereuhBox5 Ha State AMERICAN ASSOCIATION for the ADVANCEMENT

C E L L S, I N C. Jamaica, New York 11424 |of SCIENCE-Science Educationl_ Phone (212) 544-9534 1776 Massachusetts Avenue, N.W._ _ _I__ Washington, D.C. 20036

172 irceN. 5on Rades' ervceCIECE,VOL 18SCIENCE, VOL. 188172 Circle No. 5 on Readers' Service Card

a resistivity of 1.2 megohms per squarecentimeter. Wheaton Instruments. Cir-cle 689.

Recorder-Logger

The TI-Graphics 200 is a strip-chartpotentiometric recorder. It uses thermalstyli, a stationary solid state printhead,and a stable, thermally sensitive paperto record one or two continuous traceson a 10-inch-wide chart while it printsdata over the middle of the chart.Texas Instruments. Circle 686.

Fraction Collector

The Alpha 200 occupies less than1.25 square feet of bench space whileit accommodates 200 tubes. It willautomatically shut down in case ofliquid overflow or mechanical jamming.Other features include a digital display,an event marker, and a stainless steelcollection platform. Buchler Instru-ments. Circle 680.

Literature

Liquid and Gas ChromatographySupplies includes columns, packings,syringes, purifiers, fittings, and manyother products. Alltech Associates. Cir-cle 690.11 APRIL 1975

Product Guide lists amplifiers, ana-log-digital converters, panel meters, andcircuitry for many types of instrumen-tation. Analog Devices. Circle 691.

Rotors, Tubes and Accessories forPreparative Ultracentrifuges is a 48-page catalog. Beckman Instruments.Spinco Division. Circle 692.

Optical Mounts, Positioning Slidesand Accessories includes a completeline of optical building blocks. Daedal,Incorporated. Circle 693.

Multiplier Phototubes describes de-vices for measuring ultraviolet, visible,and infrared radiant energy. EMRPhotoelectric. Circle 694.

Finnigan Spectra is a periodic news-letter. The February 1975 issue fea-tures an article on mass fragmentogra-phy and other analytic techniques.Finnigan Corporation. Circle 695.

Laboratory Catalog lists equipmentfor analytic, clinical, academic, and in-dustrial research. General LaboratorySupply. Circle 696.

Oceanographic and Limnologic Cata-log includes over 110 products and anappendix contains 14 pages of practicalreference material. InterOcean Systems.Circle 697.Power Supply Catalog features elec-

tronic apparatus for design and re-search. It has illustrations and wiringand circuit diagrams for most items.Lambda Electronics. Circle 698.

Subsurface Investigation Catalog de-scribes geophysical instruments and hasarticles on sampling and coring meth-ods. Soiltest, Incorporated. Circle 699.

Ultrasound in Radiation TherapyPlanning is a monograph devoted to thisnoninvasive, nontraumatic, diagnostictool. Unirad Corporation. Circle 701.

Wiltron Technical Review for March1975 explores system accuracy inmicrowave measurements. WiltronCompany. Circle 700.Oxygen Analyzer Handbook surveys

methods of measurement and describesavailable apparatus. Delta F Corpora-tion. Circle 884.

Electrical Maintenance Hints is a1450-page manual available for $15.Westinghouse Electric Corporation.Circle 885.Vacuum Pump Comparator Chart

provides directions and formulas forconverting vapor flow into equivalentpounds of air per hour, among otherthings. Leybold-Heraeus, Incorporated.Circle 886.Gas Chromatography Supports,

Chemicals and Accessories describes allsupplies for this means of analysis.Analabs, Incorporated. Circle 887.

NEW CATALOGFROM ISCO

instruments for highand low pressure liquidchromatography andelectrophoresis

You'll find 56 pages describingcomplete high performance liquidchromatographs, L/C components,and instruments for other separat-ing techniques used in the re-search lab. Components includeabsorbance monitors with unsur-passed performance and manyfeatures unavailable elsewhere,high and low pressure pumpsincluding models which will repro-duce any gradient program you'llever need, large and small frac-tion collectors, and a digitalelectronic integrator specificallydesigned for L/C.

Check the number below on yourreader service card for a currentISCO catalog. If you're in a hurry,write direct or phone collect [402]464-0231.

scoBOX 5347 LINCOLN, NEBRASKA 68505PHONE (402) 464-0231 TELEX 48-6453


173

dsco

riStrurnent.otionor. - 4, .rse

P. *XeTfeearr

...MM. M

cold storage youcan count on

-W7 777:1-aI

HOTPACK MODEL 913100ULTRA LOW TEMP FREEZER

the frigid facts:* 13 cu ft storage capacity* occupies only 6.8 sq ft of

floor space* high-limit audible and visual

alarm* five adjustable stainless

steel shelves on 1/2 " centers* galvanneal interior (stain-

less steel optional)* safety door keylock and

dual wheel castersYou can depend on Hotpackto maintain low temperaturesdown to -76°C for your bio-logical storage. A large scaleindicating-controlling instru-ment maintains the desiredoperating temperature for yourmost perishable specimens.MORE DETAILS? WRITE

H.1 13

HOPA± OPORATIONHOTN(215) 333-1700. TWX 710-670-1694

COTTMAN AVE. AT MELROSE ST., PHILA., PA. 19135IN CANADA: HOTPACK (CAN.) LTD., WATERLOO, ONT.

SEE OUR NEW 13 CU FTLOW TEMP FREEZER AT THEFASEB AND ASM SHOWS

LETTERS

Cot,tintedIfrom page 100)

Inefficient Medical Care

The computers at Yale-New Havenand New York hospitals have notlooked in the right place if, as DeborahShapley reports (News and Comment,28 Feb., p. 30), they have found noevidence of waste and inefficiency.The place to start looking is in the

information flow of daily medical care.Every doctor in practice wastes hourslooking for information that ought to behanded to him as he needs it. Patientssit around in waiting rooms while some-one tries to find their medical records.Medical care suffers, not in the glamorfields like open heart surgery, but in thethousands of times information is passedfrom one person to another.

In the clinical laboratory alone, whichaccounts for nearly one-quarter of thenation's hospital bill, 50 percent of lab-oratory results are unused medically(1); 40 percent of patients' records areincomplete (2); 30 percent of test re-quests are not properly processed (3);20 percent of laboratory reports are lost(2); and 10 percent of laboratory speci-mens are never received (2).

SAMUEL RAYMONDWilliamii Pepper Laboratory,University of Pennsylvania MedicalSchool, Philadelphia 19104

References

1. P. F. Griner and B. Liptzin, Anin. Internt.Med. 75, 157 (1971).

2. S. Raymond. unpublished data.3. F. Matthews, Med. Lab. Observ. (August 1974),

p. 74; S. Raymond, L. Chalmners, W. Steuber,in Proceedings of the Spring Joinit ComputerConiference (Afips, Montvale, N.J., 1971).

Honeybee Controversy

Regarding the correspondence (Let-ters, 6 Sept. 1974, p. 814; 13 Dec.1974, p. 975) about the von Frischversus Wenner controversy over thelanguage of bees, it has been suggestedthat von Frisch's hypothesis alone ap-plies (I); that Wenner's hypothesisalone applies (2, 3); and that they arenot mutually exclusive and may peace-fully coexist (4). Now Davenport (Let-ters, 13 Dec. 1974, p. 975) offers usthe vision of a compromise.As a firm supporter of Wenner's

hypothesis, I believe, however, that thecontroversy will not be resolved untilit is generally understood that it reflectsa much wider, basic, theoretical con-


troversy between Lorenz's school ofanimal behavior and Schneirla's school(5).The behavior suggested by Wenner's

hypothesis will only make sense whenviewed as a detail within the contextof the continuous, dynamic process ofthe ontogenetic development of forag-ing behavior in the honeybee. It is ex-actly the need for this kind of study,while bearing in mind the low psychiclevel of insects in general, which isLirged by Schneirla's theory.

Davenport might have explained tohis students that the problem is some-what more complicated than he seemsto suggest. Firm supporters of vonFrisch's hypothesis are well aware, forinstance, that one of the Wenner groups'major experiments (3, 6), is based bythe group on the assumption that theaccumulation of odor in the hive facili-tates recruitment of new bees to an out-side food source scented with this odor.on the following day (3). This assump-tion has, however, been summarily dis-proven by l1indauer (7). No wondersupporters of von Frisch refLuse tobudge.

Wenner's group made a major break-through when they found that the mereintroduction of odor into the hive willcause foragers, at the phase in whichthey cease to forage at an outside foodsource scented with this odor (afterdepletion of the source), to resumeflights to the source (3, 8). However, themere accumulation of odor in the hivedoes not have the effect Wenner's groupbelieves it has. The effective factor inthat case is the accumulation in thehive of bees who have experienced theexchange of tactual stimuli with a danc-ing forager carrying this particularodor, and have received food from herthat is scented with this odor. Thissituation involves bees at a very dif-ferent phase, that is, one of the dance-attending phases. One can dispensewith dances, or even with the mediationof a returning forager carrying theodor into the hive, in the first situation,but not in the second (unless, of course,one uses a very sophisticated dummywhich will not only dance, but alsodistribute food).

This small example accentuates theneed for a detailed study of the onto-genetic development of foraging be-havior in the honeybee, similar to theone carried out by Schneirla for thearmy ants (9). Such a study would re-

move all sort of hurdles which Wen-ner's hypothesis constantly runs into.Wenner has mainly extended his studies

SCIFNCE, VOL. 188

I/I<

over space (justifiably demathe behavior of the wholeduring a certain incident beaccount), but as far as thedevelopnment of the behavi(over time is concerned, hetouched some isolated incidynamic continuuLm.

Departunzetnt of Zoology,Hebrewt University of Jeru.sJerusalem, Israel

References and Notes

1. K. voin Frisch, Thie Dantice Laiwz,eittatiors of Bees (Bclknap, Ca,sru1967); Science 185, 663 (1974).

2. A. M. Wenner, in Animial C c1 echniques of Stnide anzld Re sultsT. Sebeok, Ed. (Indiana Univ. fington, 1968); P. H. Wells andner) Nature (Lotnd ) 241, 171

3. A. M. Wenner, The Bee Langer.s!: Atn Experienic-e in SciencePrograms Improvemiient Cosrp., B1971).

4. J. L. Gould M. Hcnci-ey, M.Sc-icnce 169, 544 (1970).

5. N. R. F. Maier and T. C. Scisiples of Animtial Psycsholog) (New York, 1935; Principles of Atiogiy (Dover, New York, 1964); W'Priniciples of Animial Belia oior (HNcw York, 1969); specifically t

Picl, D. S. Lehrnsiani, J. W. AtzTavolga, in Des elopoientto andBehas ior; Essays in Memsors of T.L. R. Aronson, E. Toba~.h, D.J. S. Rosenblatt, Eds. (Frecnsaicisco, 1970); K. L. Lorenz, LModification of Behasior (UnivPress, Chicago, 1965).

6. A. M. Wenner, P. H. Wells, D.Scienice 164, 84 (1969).

7. M. Lindauer, Amii. Nat. 105, 898. A. M. Wenner and D. L. Jot

Behsav. 14, 149 (1966); D. L.A. M. Wenner, ibid., p. 261; Dibid. 15, 487 (1967).

9. T. C. Schneii la, in Arm)' Atits, IiEd. (Freemiian, San PFIancisco,

* Present addi-ess: 16 West 82York 10024.

Political Decision

Recent history suggests tIalismii and "objectivity" noing, scientists are at least asgullible as anyone else. InJulialn Huxley visited the So.and returned to England toScientist among the Soviets (."the elevation of science anmethod to its proper placefLirs" of that country. In Iobliged to recant in Soviet GCWorld Scienice (2), a book wrfense of "that freedom of tlwhich we fondly imaginedlaboriously won during theor four centLiries." A readinvede's s Rise rad Fatll of T. I

(3) makes it very plain that thfundamental change in Sovdurinig this period; the crusttellectual freedom was an

11 APRIL 1975

nding that consequence of ideological totalitarian-population ism. One hopes the sad saga of H. J.taken into Muller's sojourn in the Soviet wilder-individual ness has not been forgotten, nor J. B.

or of bees S. Haldane's ultimate resignation fromhas barely his beloved Communist Party in pro-dents in a test of Lysenkoism. Yet, human nature

being what it is, scientists continue toR. ROSIN- seek utopias in improbable places. I

have not been to Cuba, but on readinglemt, the letter from Ellis, Levitt, and Fausto-

Sterling (27 Dec. 1974, p. 1159) 1 feltan overwhelming sense of dej'a-vu: onceagain the United States, and the United

sage atnd Ori- States alone, is hindering the realizationbridge, Mass., of paradise on Earth in a revolutionaryoifiutsieatir)ti; Socialist state.;of £e.seuins IiPress, BlosimI1 We nmay all praise the Cuban revolu-(197A).M 'e tion if it has indeed stimulated sciencesOuage Cotitro- there, buLt that is not all that it has(EdaL...ational

OLlder, Colo., done, and at any rate mere numbersC. MlacLcod, are no indication of intellectuLal climate,

as RLussia's record shows. The price ofhneira, Ptrin- the revolution is being paid, most im-MlcGrasw Hill,benFzismal Psivchol- mendiately by the prisoners behind[a N. Tavolga, barbed wire on the Isle of Pines and~arter & Rosw,essays by (. elsewhere (are there any scientists~,assd 'WN. N.Evolution oj anmong them'?), but ultimately, perhaps,C. Sc litiei.la, by all the Cuban people under a regimeS. Lehriman,

n, San Fi-an- which subordinates human freedoms tolsoluiitiut a'tis the state ideology. I hope readers ofof Chic,ago

Scitcnce will keep this in mind whileL. Johintson. pontdering the appeal for support from

(1971). the scientific community for an end tohnson, Ati.tti the blockade. This is a political decisionJohinson andpoica

L. Johnson, with many consequences, of which im-H. R. Topofl, provement in scientific communication1971). Imlay be one of the least important. IStieet, New hope readers who are impressed by the

figures concerning women and minori-ties in Cuban science will balance themagainst the ruthless persecution ofhomlosexLuals reported even by observ-ers favorably disposed toward the new

hat, ration- Cuban society (4). As for the ideal oftwithstand- international cooperation embodied inpolitically the charters of the United Nations and1931 Sir Unesco. I wili taike Ellis et al. more

viet Union Leriously when they puLblicly denouncepublish A the Castro regime's complicity in the

1), praising liprec.dentel sUbversion of thosed scientific ideals by the Third World when it readin the af- Israel OUt of Unesco in 1974.)49 he felt ARTHUR SHAPIRO

enWtics acidl D epartnti7ent of Zoolog,!Ay, Un iversit ofitten in de- Ctlifornia, Davis 95616hc intellect Refereniceshad been 1. J. S. HUsxlsC, A Sc ientist attionig tile So iets

(Chatto & WindLs, l ondon. 1932).past three 2. -, Sos iet Getnetic s ansit World Sc iestceIg of Med- (C hatto & WindUs, London, 1949).

3. ZL. A. NIMcscvedcv, Tire Rsi:e ald Fall of T. D.I).L 17Stlk) I- -s--k 1. N I Le cr', r an l-oo (ColomI-bia

Lere was no Univ. Press, Ness York, 1969).4. E. Cardenal, Isn Cisboi (Nes Dir-ections, New

,iet soclety York, 1974); D. CaUtc, Clibis Yes:* (McGraw-ling of in- Hill, New York, 1974); J. Nicholson, Jr.,

Inside Cluba (Sheed anid Ward, New York,inevitable 1974).

from

elscint

radioactive labelled (3H or '4C)radioactive fluorescent

3 14labelled (FITC with3H or C)

*high purity

*high biological activity

* available from stock

ask for a

test sample of 1mg.

For detailed information onElscint family of labelledlectins write to:Elscint Inc., 470 Commercial Ave.,Palisades Park, N.J. 07650, U.S.A.Telephone (201) 461-5406,Elscint GmbH, Freudenbergstrasse 27,62 Wiesbaden-Schierstein, W. Germany.Telephone (06121) 2786,Elscint Ltd., P.O.B. 5258, Haifa, Israel,Telephone 522516, Telex 4-654.

. , -


175

-,I

. . a critical problem... an important special issue

of SCIENCE

May 9, 1975 is the publication date for an im-portant special issue of SCIENCE. This issue

ill be devoted exclusively to the wA/orld foodsupply, exploring the critical problems wse faceand ssays to deal with them. General areas ofdiscussion will be:* The V\ orld Food Sittuation* Development of Additional Supplies of

Food* Applied Research on Food Production* Nutrition and Food* Basic Research

Among the contributing authors: Thomas T.Poleman, Cornell University: Harry Walters,World Bank / Roger Revelle, Harvard UniversityCenter for Population Studies Pierre R. Crus-son, Resources for the Future William Ennis,U.S. Department of Agriculture Steve Ravwlins,University of California at Riverside NormanBrown, National Academy of Sciences Derricklelliffe, UCLA School of Medicine IsraelZelitch, Agricultural Experiment Station RalphHardy, Dupont Company Experiment Station.

If you are concerned with food and nutritionproblems, we urge you to read this issue ofSCIENCE. Be sure to have an adequate supplyon hand for yourself and your colleagues. Or-ders for additional copies at $3 each will beaccepted through 4'15'75. Use the form pro-vided below or send your purchase order toAAAS, Dept. Fl-1.

Please send me copies of the May 9, 1975Scienoe Food Issue at $3 per copv.[I Check or money order enclosecd (payacble to

AAAS-no cash)D Please bill me (applicable to orders totalling $-()

or more)

Name

Address

City State Zip Code

AMERICAN ASSOCIATION for theADVANCEMENT of SCIENCE Department Fl-1

1515 M0assachusetts Avenue, N.W'.Washington D..C 20(005

7,

v0 *S 1

Cytochalasin B [4-3H]5-1 5Ci/mmoleEthanol solution, shipped in dry iceNET-464 $95/25O0Ci $280/1 mCi

This fungal metabolite has been implicated in hexosetransport inhibition in mammalian cells.1 It hasunusual biological effects on a wide range of cellmovements such as. cytokinesis, cytoplasmic stream-ing, blood clot retraction and associated develop-mental processes.21 S Lin and J.A Spudich-J Bol Chem. 249, 5778 (1974)2 E L Taylor and NNK Wessells Develop Biol31, 413 (1973)

¢ New England Nuclear549 Albany Street, Boston, Mass 02118Customer service 617-482-9595

NEN Canada Ltd, Dorval Quebec; NEN Chemicals GmbH, Dreieichenhain, GermanyCircle No. 107 on Readers' Service Card

Model 1-30b Model 1-35This 8 cubic foot 25 cubic feet ofiighted table top precision controlledincubator with over- incubator. The foursized evaporator and shelves can be fullylow velocity air loaded withoutcirculation will hold vertical gradient.your most delicate Designed for versa-materials withoLIt tility, this unit offersdesiccation. Options five different lightingare available for configurations.additional lighting.

Pervical has the experience, the know-how and the product line toserve your needs. Whether it's a simple biological incubator or ahighly sophisticated plant growth chamber, Percival can supply it foryou. We will prepare a recommendation to fit your requirementswhether they be table models or giant walk-ins.Consider your requirements carefully and then contact us. Write todayfor more information and the new complete Percival catalog.

PERCIVAL MANUFACTURING CO.P.O. Box 249 Boone, Iowa 50036 sc-4Serving Science since 1955

Circle No. 6 on Readers' Service CardScIENC'E, VOL. 188

NEWS AND COMMENT

(Continued from page 135)

cratic Party's energy task force, whichis headed by former White House aideHarry McPherson and which met inWashington in late February. Thisnew superagency would include mostof USGS, NOAA, the EnvironmentalProtection Agency, the Coast Guard,and parts of the Army Corps of En-gineers. Both the Democratic taskforce plan and the Hollings bill wouldleave BLM in Interior and separateOCS development from regulation.The DEO notion has been floating

around in the bureaucracy and on Cap-itol Hill for some time. Staffers giveit a chance of becoming reality only ifthe Ford Administration deep-sixes acompeting superagency proposal, thelong discussed Department of Energyand Natural Resources. In that case, itmight support the DEO idea.A less original solution has been put

forward by a scientific advisory com-mittee, the National Advisory Com-mittee on Oceans and Atmosphere(NACOA). In response to a requestfrom Senator Hollings, NACOA wroteits own position paper on the OCSleasing, which ventured that the wholeissue had become so entangled thatnormal governmental processes couldnot unravel it. Only a blue-ribbon com-mission would be able to come up witha blueprint for action that could beacceptable to all sides.NACOA's strong views on the OCS

issue are a reminder that ocean policyhas been nearly the exclusive provinceof oceanographers for the last severalyears. But the oceanographers seemabout to be edged over by other, morepowerful groups whose interests inthe oceans are somewhat less thanscholarly. A memo proposing DEO tothe Democratic task force put the chal-lenge to the oceanographers thus:

"Over the last few decades theoceans have emerged from the labora-tories and research vessels of a fewhundred oceanographers and marinescientists out into the rough and tum-ble company of the oil and gas in-dustry, the recreational developers,the increasingly wide-ranging fisher-men of all nations and even theUnited Nations."No longer can the United States

afford to regard the oceans as a mat-ter for academia. Ocean-related con-flicts and controversies have becomecritical policy matters for the Federalgovernment."-DEBORAH SHAPLEY11 APRIL 1975

1RECENT DEATHS

Edwin J. Anderson, 74; professoremeritus of apiculture, PennsylvaniaState University; 3 December.

Ralph C. Blaney, 75; professoremeritus of agricultural extension,Pennsylvania State University; 31 De-cember.

J. Lawrence Botsford, 67; profes-sor emeritus of mathematics, Univer-sity of Idaho; 27 December.

Theophil F. Buehrer, 82; professoremeritus of agriculture, University ofArizona; 5 December.Hermann N. Burian, 68; professor

of ophthalmology, University of NorthCarolina School of Medicine; 25 No-vember.

Darrell J. Drickey, 40; associate pro-fessor of physics, University of Cali-fornia, Los Angeles; 10 December.

Erwin R. Gaerttner, 63; chairman,nuclear engineering division, Rensse-laer Polytechnic Institute; 19 Novem-ber.

Joseph G. Hoffman, 65; retired pro-fessor of physics and biophysics, StateUniversity of New York, Buffalo; 8December.

Claude A. Levengood, 64; chairman,department of life science, Universityof Tulsa; 15 January.

Michael A. Lorenzo, 49; associateprofessor of biology, Loyola College;6 December.

F. H. MacDougall, 91; former pro-fessor of chemistry, University ofMinnesota; 21 November.Edward J. Martin, 82; retired head,

physics department, General MotorsResearch Laboratories; 16 December.James McCormack, 64; former

chairman, Communications SatelliteCorporation; 3 January.

H. T. Person, 71; former president,University of Wyoming; 13 December.

Walter F. Pond, 89; former Tennes-see state geologist, and geologist, Mis-sissippi state geological survey; 25 Oc-tober.

George W. Slaughter, 70; associateprofessor of clinical urology, NewYork University; 14 January.

William F. Strauss, 45; vice presi-dent, Bio-dynamics, Inc., New Jersey;6 January.

Claire E. Turner, 84; former pro-fessor of public health, MassachusettsInstitute of Technology; 27 November.

George D. Van Dyke, 76; formerprofessor of physics, Earlham College;28 November.

I

PersonnelPlacement

|||||||||||||POSITIONS WANTED ||||||||||||

Biochemist. Ph.D. 1970. Endocrinology. Bio-chemical actions of estrogens in uterus andDMBA-induiced breast tumors. Steroid-proteininteractions. Enzyme studies. Bioassays. RIA.Desires position in industry or hospital-basedlaboratory, after May 1975. Box 154, SCIENCE.

x

Biochemist, Ph.D. 1972. Three years of post-doctoral research in nucleic acid chemistry andmetabolism. Publications. Seeks research/teach-ing position. Box 155, SCIENCE. X

Ph.D. Biochemistry. Experience in enzymes, lipids.parasite biochemistry, nutrition, biochemicalpathology, and membranes. Presently medicalsclhool faculty. Prefers research/teaching. Box170, SCIENCE. x

A recent Ph.D. Bioengineer, currently a researchassociate, seeks teaching/research faculty position;several publications to credit; experience withmodeling of circulatory systems and biomechanics;interests fill the entire domain of physiologicalsciences. Country of employment and geographicallocation are open. Dr. N. P. Reddy, P.O. Box643, College Station, Texas 77840. X

Biologist/Plant Physiologist. M.Ss. 1975. Researchexperience in plant growth regulators, tissue cul-ture methods. Publications. Good background ingenetics. Industrial, academic opportunities? Box171. SCIENCE. X

Two Cellular Immunologists, Ph.D.'s, experienced,funded. Backgrounds, pharmacology, microbiology.Interests include tumor immunology, ontogeny,reproductive biology, stimulation and suppressionof immune response. Seek teaching/research,medical center, assistant/professor level. Box 172,SCIENCE. X

Ichthyologist, M.S. Eight years of experience. Re-search and publications concerning effects ofthermal discharges on estuarine fish. Administra-tive experience. Seeking government, academic,or industrial position. Box 174, SCIENCE. X

177

Only those employers who will not dis-criminate on the basis of race, sex, religion,color, or national origin should submit Per-sonnel Placement advertising.POSITIONS WANTED: 40¢ per word; use of

Box Number counts as 10 additional words.Minimum charge $10. Prepayment required.This rate applies to individuals only; per-sonnel agencies and companies take displayrate for all advertising.DISPLAY (POSITIONS OPEN, MARKET

PLACE, AND SO FORTH): $110 per inch, mini-mum (1 inch is equivalent to 12 lines of 48characters each). Ads over 1 inch billed tonearest quarter inch. No charge for BoxNumber. Rates net. No agency commissionallowed for ads under 4 inches. No cash dis-count. Prepayment required for foreign adver-tising. Purchase orders and billing informa-tion must accompany all other advertising.COPY for ads must reach SCIENCE by

Wednesday, 31/2 weeks before issue date(Friday of each week) requested. Send copyfor all positions wanted ads and display adsunder 5 inches to:

SCIENCE, Room 2071515 Massachusetts Ave., NWWashington, D.C. 20005

Send copy for display ads, 1/6 page andlarger, to:

Scherago Associates, Inc.11 West 42 StreetNew York, N.Y. 10036

BLIND AD replies should be addressed asfollows:

Box (give number)SCIENCE1515 Massachusetts Ave., NWWashington, D.C. 20005

UNIVERSITY OF PAPUAApplications are invited for the postof a) SENIOR LECTURER or b) LEC-TURER in PHYSICS. The appointeewill be expected to combine researchwith teaching of about 12 hours perweek. Most of the teaching will beto students in their preliminary orfirst undergraduate years. The re-search interests of the departmentare in the fields of geomagnetism,ionospheric and upper atmosphericstudies, meteorology, cloud electrifi-cation processes and micrometeorol-ogy including evapotranspiration. Itis hoped the appointee will be ableto assume duties in July 1975. Theappointment will initially be for upto three years. Salary scales:a) A$11,603-A$13,284 p.a. b)A$8,674-A$11,362 p.a. (4£ ster-ling = A$1.78). In addition, an al-lowance of A$1,300 p.a. if single ispayable. An extra A$1,000 MarriageAllowance and A$156 per child ChildAllowance may also be payable. Con-ditions include provision of housing,study leave, annual leave fares,FSSU type superannuation. In somecases it may be possible to makean appointment on secondment. Ap-plications should be in duplicate andinclude a curriculum vitae, thenames and addresses of three refer-ees, a recent small photograph andan indication of estimated startingdate. Further details and the condi-tions of appointment are availablefrom The Secretary, P. 0. Box 4820,University, Papua, New Guinea. Ap-plications should be returned assoon as possible.

and three letters of recommendation to GilbertGordon, Chemistry Department, Miami University,Oxford, Ohio 45056 or H. Ira Fritz, Departmentof Biological Chemistry, School of Medicine,Wright State University, Dayton, Ohio 45431.Deadline 1 May. Equal Opportunity/AffirmativeAction Employer.

178

I POSITIONS WANTED I|IChemist-Endocrinologist. Ph.D. 1971. Three yearspostdoctoral in Department of Endocrinology-Metabolism. Experienced in analytical instru-mentation, gel chromatography, mass spectroscopy,amino acid analyzer, radioimmunoassay, tracertechniques, and small animal surgery. Desireacademic, industrial, or government position. Box173, SCIENCE. x

Former associate professor in central Europe withdiversified Industrial R&D Experience in UnitedStates, desires assignment in Europe. MultilingualOrganic-Polymer Chemist, Ph.D., D.Sc., patents,publications, honors, industrial products. Box 169,SCIENCE. X

Pathologist, Ph.D., M.D. Seeks active seniorfaculty position. Background in academic pedi-atric, and forensic pathology with research andteaching experience. Available in July 1975. Cur-riculum vitae upon request. Box 175, SCIENCE.

4/18

Vertebrate Biologist-Ecologist: Ph.D. Sevenyears of college teaching experience in vertebratebiology/zoology, ecology, and physiological ecol-ogy. Research concerned with ecology of smallmammals. Publications. Desires teaching/researchappointment. Box 176, SCIENCE. X

Zoologist, Ph.D. Seeks teaching or teaching-research position. Interests include invertebratezoology, invertebrate physiology, parasitology.Box 54, SCIENCE. 4/11

|||||III||I||||I|I|||ill||| POSITIONSOPEN 11111111111N1111111ANATOMY. Position open 1 September 1975 foran Assistant Professor to teach Human Anatomyand Neuroanatomy. Candidates should have aPh.D. in Anatomy or expect degree prior to 1September 1975. Qualified applicants should senda currictulum vitae including transcripts, publica-tions and three letters of recommendation to:Ormond G. Mitchell, Chairman, Dept. of Anat-omy, Brookdale Dental Center, New York Uni-versity College of Dentistry, 421 First Ave., NewYork 10010. A Nondiscriminatory Affirmative Ac-tion Employer.

AQUATIC ECOLOGISTPosition for Assistant Professor to participate inEnvironmental Studies and ecology program. Analgal ecologist with postdoctoral experience pre-ferred. Regular 9-month appointment. Send cur-riculum vitae, reprints, and three letters of recom-mendation by 1 May 1975 to Dr. KennethArmitage, Chairman, Aquatic Ecology SearchCommittee, Division of Biological Sciences, TheUniversity of Kansas, Lawrence, Kansas 6604S.An Equ(al Opportunity/Affirmative Action Em-ployer.

ASSISTANT PROFESSOR. Ph.D. EnvironmentalEngineer to work at a Maryland Eastern Shorelaboratory. Research in waste disposal, shellfishaquaculture, and other environmental problems.Contact

Prof. Paul WinnUniversity of Maryland Center for

Environmental and Estuarine StudiesP.O. Box 775

Cambridge, Maryland 21613by 1 June 1975. An Equal Opportunity/Affirma-tive Action Employer.

Applications are invited for positions as ASSIST-ANT PROFESSOR from research-orientedteachers qualified in General Biology, Micro-biology, Immunobiology, or Terrestrial Ecology.Send resumes to: Chairman, Biology Department,Adelphi University, Garden City, N.Y. 11530.Affirmative Action Employers.

ASSISTANT PROFESSORBiochemistry. Fall 1975. Ph.D. with teachinginterests in lipid biochemistry and/or nutritionalbiochemistry. Joint appointment at Miami Uni-versity and Wright State University School ofMedicine. Position requires undergraduate andgraduate (M.S., M.D., and Ph.D.) teaching andresearch. Research involvement mandatory. Quali-fied persons should send curriculum vitae, de-tailed outlines of research and teaching interests,

encouraged; adequate facilities and equipmentavailable. Salary range $9,000 to $10,500 for 9months. Submit curriculum vitae, transcripts, andthree letters of reference by 2 May 1975 to:Chairman, Department of Biology, King's College,133 North River Street, Wilkes-Barre, Pennsyl-vania 18711. Equial Opportunity Employer.

SCIENCE, VOL. 188

|||1111111|11111||11|1"11POSMNONS OPEN||||||||||||||||||||||

VISITING ASSISTANT PROFESSOR OF BIO-CHEMISTRY. Temporary appointment for the1975-76 academic year. Ph.D. in Biochemistryrequired. Interest in enzymology and/or clinicalbiochemistry preferred. Teaching duties will in-clude introductory and/or advanced biochemistrycourses. Research time available. Curriculumvitae and three letters of recommendation to:J. M. Shively, Head, Department of Biochemistry,Clemson University, Clemson, South Carolina29631. Clemson University is an Equal Oppor-tunitY'/Affirmnative Action Employer.

ASSISTANT PROFESSOROF PHARMACOLOGY

One or more faculty positions for Ph.D. in phar-macology or equivalent with postdoctoral train-ing and/or teaching experience. Research exper-ience and interest in cardiovascular pharmacologypreferred. Send curriculum vitae and referencesto: Dr. Joanne Moore, Chairman, Department ofPharmacology, University of Oklahoma HealthSciences Center, P.O. Box 26901, Oklahoma City,Oklahoma 73190. An Equal Opportinity/Affirma-tiv e Action Employer.

ASSISTANT PROFESSOR IN DEPARTMENTOF PHYSICS at Michigan State University. Ph.D.required. Experience and significant accomplish-ments (publications) in experimental nuclearphysics. Contact:

Truman 0. Woodruff, ChairmanDepartment of Physics

Michigan State UniversityEast Lansing, Michigan 48824

An Equal Opportunity Employer

The Department of Biological Sciences, San JoseState University, San Jose, Calif. 95192, anEqutal Opportunity Employer, announces an open-ing for ASSISTANT PROFESSOR OF POPULA-TION BIOLOGY OR PHYSIOLOGICAL ECOL-OGY AND WILDLIFE MANAGEMENT, 30August 1975. Teaching in these and allied fields.Graduate student advising. Send curriculum vitaeto Joseph H. Young, Chairman. The departmentalso announces temporary positions for one andtwo semesters, 1975-76 academic year. in cellbiology, human anatomy and physiology, zoology,microbiology, and general biology.

ASSISTANT PROFESSOR OF OCEANOG-RAPHY. Position available September 1976(possibly as early as September 1975). Ph.D. withspecial competence in chemical oceanography ormarine geochemistry. Applicants should havequalifications to teach undergraduate and graduatecourses. Applicants will be judged on teachingand research potential. Send complete resumeand four letters of reference to Dr. Larry Larsen,Chairman of Faculty Recruitment Committee,Department of Oceanography, University ofWashington, Seattle, Washington 98195. TheUniversity is an Equal Opportunity/AffirmativeAction Employer.

ASSISTANT PROFESSOR OF SOCIOLOGYThe Department of Human Ecology and SocialSciences in a multipurpose college with a "Manand Environment" theme has an opening for aperson to teach introductory sociology; otherundergraduate courses appropriate for interdis-ciplinary curricula related to environmental prob-lems, and graduate courses in sociology, Somework required also in assisting Cooperative Ex-tension Faculty to develop programs and evaluatetheir social impact. Ph.D. required. Salary:$11,710 per annum. Initial appointment will befor 3 years. Applications, with curriculum vitaeand at least three letters of reference, should besent to: Dr. Carmel Schrire, Chairman, Depart-ment of Human Ecology and Social Sciences,Cook College, Rutgers University, P.O. Box 231,New Brunswick, New Jersey 08903. Rutgers Uni-versity is an Equal Opportunity/Affirmative Ac-tion Employer.

BIOLOGISTApplications are invited for a faculty position atthe Instructor or Assistant Professor level. Appli-cants must have a Ph.D. and be capable of teach-ing General Biology, Botany, and Ecology(molecular orientation preferred) in a small, pri-vate, liberal arts college environment. Research

UNIVERSITY OF PAPUA, NEWGUINEA (PORT MORESBY)

Applications are invited for the postof RESEARCH FELLOW IN AGRICUL-TURE. The appointee will have aPh.D. in plant breeding, with experi-ence in maize and sorghum breed-ing. Duties will include the produc-tion of high-yielding, early-maturingvarieties of sorghum and maize forvarious altitudes and rainfall regionsin Papua, New Guinea; agronomicstudies on the new varieties of sor-ghum and maize; and the training ofgraduate students and field staff inthe techniques of breeding andagronomy of sorghum and maize.Salary scale: A$8,674-A$11,362p.a. (£1 sterling = A$1.78). In addition, an allowance of A$1,300 p.a.if single is payable. An extra A$1,000Marriage Allowance and A$156 perchild Child Allowance may also bepayable. Conditions include provi-sion of housing, study leave, annualleave fares, FSSU type superannua-tion. In some cases it may be pos-sible to make an appointment onsecondment. Applications should bein duplicate and include a curricu-lum vitae, the names and addressesof three referees, a recent smallphotograph and an indication of esti-mated starting date. Further detailsand the conditions of appointmentare available from The Secretary,P. 0. Box 4820, University, Papua,New Guinea. Applications should besent as soon as possible.

|||||||||||||||||POSITIONS OPEN.||||||||||||ASSOCIATE DEAN FOR EDUCATION. A

Medical School in the Northeast invites applica-tions and nominations for this major positionwhich would be responsible for undergraduatemedical education, the Ph.D. and the M.D.-Ph.D.programs, admissions, continuing education, in-terdisciplinary aspects of house staff training,and so forth. This is an essentially full-time posi-tion. but the several operational functions couldbe delegated to members of the faculty and staff.Curriculum vitae should be submitted to Box 166,SCIENCE. We are an Equal Opportunity Em-ploy er.

UNIVERSITY OF MASSACHUSETTSAMHERST

DEPARTMENT OF BIOCHEMISTRYRecent Ph.D. in Biochemistry. A 2-year appoint-ment is available for research in areas of mem-brane biochemistry with some participation inthe departmental teaching program. Send cur-riculum vitae and inquiries to Personnel Office,Code T24A, 161 Whitmore, Amherst, Mass. 01002.An Affirmative Action/Equal Opportunit) Em-ployer.

The Department of Biology at Creighton Uni-versity announces two Assistant Professor posi-tions for August 1975.BEHAVIORIST. Ph.D. with broad background

in general biology, to teach introductory biology,undergraduate animal behavior, and possiblegraduate offerings, including directing research.ANIMAL HISTOLOGY, Ph.D., 1-year appoint-

ment, to teach introductory biology and under-graduate course in histology. Candidates withcompleted Ph.D.'s (as of August 1975) shouldsend curriculum vitae, transcripts, and three lettersof reference to Dr. Robert Belknap, Chairman,Biology, Creighton University, Omaha, Nebraska68178.

BIOLOGISTA position at the instructor level for one

academic year will be available 2 September 1975.Duties will include teaching sections of intro-ductory biology and coordination of the AVTlaboratory. A Master's degree in BiologicalSciences and previous 'experience with AT tech-niiques are minimum requirements. Salary $9000.Send curriculum vitae, transcripts, and threereferences to: Dr. G. Hartmann, Chairman, De-partment of Biology, Rhode Island College,Province, R.I. 02908.

CELL BIOLOGISTPostdoctoral or research associate level. Expe-rienced in cell culture and an interest in chemicalcarcinogenesis and mutagenesis and tumor virol-ogy. Suibmit detailed resum6 to:

Ms. Sandy D'AmbrosioThe Wistar Institute

36th and Spruce StreetsPhiladelphia, Pa. 19104

CHAIRMAN, OBSTETRICS-GYNECOLOGYUNIVERSITY OF TENNESSEE-MEMPHISThe University of Tennessee College of Medi-

cine is seeking a chairman of its Department ofObstetrics and Gynecology. Candidate shouldpresent evidence of clinical and academic com-petence to direct a department of 9 full-timetaculty members with 21 residents in training.Interested individuals should contact William C.North, M.D., Chairman, Search Committee, Uni-versity of Tennessee College of Medicine, Mem-phis, Fenn. 38163. An Equal Opportunity/Affirma-tir e Action Employer.

CHEMICAL OCEANOGRAPHER POSITIONThe University of California at Santa Cruz

invites applications for a joint faculty appointmentin the Division of Natural Sciences and CollegeVIII. The successful candidate's duties will in-clude teaching at both undergraduate and gradu-ate levels. We are interested in candidates whoseresearch interests center around coastal geo-chemical processes. A knowledge of chemicaltracer and other analytical techniques such asradionuclide and heavy metal and analysis is de-sirable. The appointment is at the AssistantProfessor level. Candidates should submit an ex-tended curriculum vitae detailing past and futureresearch teaching interests as well as the namesof at least three references. Deadline for applica-tions is 20 April 1975. Write: Kenneth S. Norris,Coordinator/Administrator, Coastal Marine Lab-oratory, University of California, Santa Crz,California 95064. The University of California Is2n Equial Opportunity/Affirmative Action Em-ployer.

11 APRIL 1975

iiiiiiiiiiiiiiii POSITIONS OPEFN|||||||||||||||||The Faculty of Medicine, Memorial University

of Newfoundland. St. John's, Newfoundland, willbe making additional appointments in CELLSCIENCES in anticipation of its move to a newSciences Complex. Research-oriented individualswith background in Cell Physiology and/or De-velopmental Biology are invited to apply in oneof the following research areas: (i) MembraneStudies: (ii) Microbial, Molecular, and Cyto-genetics; (iii) Immunology; (iv) Growth, Develop-ment, and Regulation; (v) Neurosciences; and(vi) C ardiovascular Studies.

Successful candidates will be expected to par-ticipate in teaching Cell Physiology, Histology, orEmbryology in the first 2 years of the medicalprogram.

Applications will be received by Dr. B. H. Sells,Chairman, Cell Sciences Search Committee, Fac-ulty of Medicine, Memorial University of New-foundland, St. John's, Newfoundland, CanadaAIC 5S7, until 20 April 1975 and should be ac-companied by a curriculum vitae and names ofthree referees.

CHAIRPERSON, INSTRUCTIONALDEVELOPMENT SERVICES

Responsibilities are planning, coordinating, andproviding (via staff) instructional and faculty de-velopment. Minimal qualifications are an M.S.degree, experience as instructional technologistand 3 years' experience in industry and/or educa-tion. The salary is open. Send resumE and refer-ences to Dr. Clay G. Johnson, Manager ofIrstruct;onal Development and Evaluation, TexasState Technical Institute, Waco, Texas 76705.

CHAIRPERSON, DEPARTMENT OF HEALTHSCIENCES. Available September 1975. Desirepe: son with doctorate in health-related discipline.established reputation as a scholar, and evidenceof ability for administrative and professionalleadership. Department provides human anatomyand physiology courses for professional programsand has graduate programs in health sciences,nutrition, applied anatomy, and physiology. Un-dergraduate programs in applied physiology, car-diopulmonary rehabilitation, and dance/movementtherapy proposed for 1975-76. Submit letter ofinterest, cuLrriculum vitae, and references with anyinquiries to: Mary B. McCann, M.D., SargentCollege of Allied Health Professions, Boston Uni-versity, Boston, Mass. 02215. Affirmative Action/Equal Opportunity Employer.

CHAIRPERSONBIOLOGICAL SCIENCES

Nominations and applications are being ac-cepted for the position of chairperson for a de-partment of approximately 30 faculty and 80Ph.D. and M.S. graduate students. IndividualmuLst have had an active research career as evi-denced by publications, work with graduate stu-dents. and success in obtaining grants. Strongpreference will be given to an individual withprevious administrative experience such as adepartmental chairperson. Rank and salary open.Send curriculum vitae and three letters of recom-mendation to: Dr. Richard Crang, Chairman,Search Committee, Department of Biological Sci-ences, Bowling Green State University, BowlingGreen, Ohio 43403.

CHEMIST-BIOCHEMISTDynamic midwestern radiopharmaceutical manu-facturer seeks Ph.D. or M.S. with 2 to 5 years ofexperience for a position in R & D. Must haveworking knowledge in radiolabeling-T-3, T4.and steroids; experience with thin-layer, column,and liquid-liquid chromatography, familiarity withorganic synthesis, and RIA procedures desirable.Competitive salary, benefits and opportunities.Box 177, SCIENCE.

FACULTY POSITION (ASSISTANT PROFES-SOR) IN ANIMAL SCIENCE; 50 percent teach-ing, 50 percent Extension Program emphasis-livestock system evaluation, undergraduate, ex-tension teaching, and advising. Ph.D. requiredwith advanced training in statistics, livestockproduction, and computer usage. Contact S. A.Ewing, 101 Kildee Hall, Iowa State University,Ames, Iowa 50010. Iowa State University is anEqual Opportunity/Affirmative Action Employer.

FRESHWATER ECOLOGISTWanted freshwater ecologist, limnologist, or en-vironmental scientist with experience in biologicalscience to work on development of stability in-dicators for freshwater ecosystems. Ph.D. in abiological science required. Please send resume toJohn Harte or Don Levy, Lawrence BerkeleyLaboratory, University of California, Berkeley,Calif. 94720. Or phone 415-843-2740, ext. 6119.An Equal Opportunity Employer.

Biostatisticians

NEW DRUGEVALUATION

We need urgently to add severalexperienced biostatisticians to ourCorporate Experimental BiometricsDepartment. They will provide ex-perimental design and data analy-sis direction to our pharmacologi-cal and clinical candidate drugstudies, pointing towards New DrugApplications. Preference will begiven applicants who have priorexperience in this area of biomet-rics either through industry or gov-ernment work. Excellent supportingstaff and computer facilities avail-able.Location is at our headquarters inrural-suburban Lake County, Illi-nois . . . 40 miles north of Chicago.Contact Dr. Kenneth J. Frederick,Director of Research Data Opera-tions, at the Atlantic City Federa-tion Meeting, Lombardy Motel,(609) 344-8131, 13-16 April, orsend rdsumd, with salary history to:

N. C. WarnerProfessional Employment

- ABBOTTNORTH CHlICAGO, ILL. 60064

An Equal Opportunity Employer M/F

179

Immunopharmacologist

Candidates should have a Ph.D. inpharmacology or a related disci-pline with interest and preferablysome experience in immunemechanisms of disease. Primaryresponsibility is in the evaluationof agents useful in immediate hy-persensitivity diseases, but thereis considerable overlap with de-layed hypersensitivity and inflam-mation. Interested persons shouldsend a r4sum4 of education andresearch experience to:

CHARLES L. SMITHResearch Administrator

WYETHLABORATORIES, INC.

P.O. Box 8299Philadelphia, Pa. 19101

Equal Opportunity EmployerWyeth WYETHMi LABORATORIES, INC.

DIRECTOR, FLORIDA SOLARENERGY CENTER

The State of Florida has established a SolarEnergy Center located at Cape Canaveral. ad-jacent to the Kennedy Space Center. Activitiesof the Center will include solar energy utiliza-tion, development, and research and will providea coordinated statewide approach in cooperationwith public and private universities, industries,and governmental agencies. The Director mustbe capable of working effectively with universityfaculty and administrators; the business com-munity; design professionals; federal, state, andlocal governmental agencies; and with outsidefunding agencies. It is expected that candidatesfor this position will have earned doctorates inthe physical sciences or engineering and demon-strated experience and capability in working withindustry, government, and universities, in energy-related contexts.Send nominations and applications by I May

1975 to: Dr. William B. Phillips, Director ofScience and Engineering, Florida Board ofRegents, 107 West Gaines Street, Tallahassee,Florida 32304. An Equal Opportunity/AffirmativeAction Employer.

DIRECTOR-THE BREHM LABORATORYWRIGHT STATE UNIVERSITY

DAYTON, OHIO

[he Brehm Laboratory is a 25,000-square-footscience facility designed for multi- and interdisci-plinary research and instruction in environ-mental and related areas. The Director shall stimu-late and aid in the establishment of appropriateresearch projects and in developing externalfunding for the Laboratory; manage resourcesand facilities; and continue to personally pursuehis own research.Address replies to David Karl, Chairman,

Brehm Search Committee, Wright State Univer-sity, Dayton, Ohio 45431. An Equal Opportunity/Affirmativ-e Action Employer.

GEOCHEMIST/GEOCHRONOLOGIST

The Geology Department of Brooklyn College.City University of New York, has an opening foran individual whose primary research responsibil-ity will be potassium-argon geochronology andwho has a strong commitment to undergraduateteaching. Research equipment includes an M.S.10 mass spectrometer for gas work and a solidsource mass spectrometer. Position is as AssistantProfessor and a Ph.D. is required. Send curricu-lum vitae promptly to Chairman, Department ofGeology, Brooklyn College, Brooklyn, N.Y. 11210.Brooklyn College is an Affirmative Action/Equalopportlunit Employer.

GEOLOGICAL OCEANOGRAPHERS-ThreePositiors.

1) Faculty graduate-level research and teachingin micropaleontology and sedimentology of bio-genous pelagic sediments with application topaleo-oceanography.

2) Faculty graduate-level research and teachingin marine sedimentology, sediment transport, andmineralogy or sediment geochemistry with appli-cation to the pelagic realm.

3) Research associate in mineralogy or marinesediments and marine sedimentology. Must beable to secure own research funds and interfacewith existing research programs.

All positions require broad oceanographicbackground and postdoctorate research experience.Serd letters, curriculum vitae, names of threereferences, and bibliographies to the Dean,School of Oceanography, Oregon State University,Corvallis, Ore. 97331. Affirmative Action/EqualOpportunity Employer. Applications will be re-ceived until 15 Jtune 1975.

GEOPHYSICAL RESEARCH. Research staffposition with responsibility for implementing adual processor PDP-1l geophysical data acquisi-tion, processing, and reduction system aboard anoceanographic research vessel. Involves modifi-cation of manufacture-supplied real-time operat-ing systems, design and construction of a dataacquLisition system, and assistance in overall re-duction of geophysical data.

Bachelor's in Engineering, Physics, or Mathe-matics plus 3 to 4 years of experience required.Prior assembly language programming experienceon the PDP-I l an asset. Send resume to: Dr.A. B. Watts, Lamont-Doherty Geological Observa-tory (of Columbia University), Palisades, N.Y.10964. An Equial Opportunity, Employer, MIF.

180

Memorial University of Newfoundland, Facultyof Medicine, has an opening for a specialist inHUMAN NUTRITION. M.D. or Ph.D. withinterests and experience in teaching and researchrequired. Rank and salary to be negotiated.Please send curriculum vitae and names and ad-dresses of three referees to Dr. Carl Pfeiffer, Fac-ulty of Medicine, Memorial University of New-foundland, St. John's, Newfoundland, Canada.

IMMUNOLOGISTA private company interested in research anddevelopment is looking for an immunologistwith 3 to 5 years of experience in general im-munology, with a background in animal work.Reply

Box 178, SCIENCE

SIX INSTRUCTOR POSITIONSAvailable in the Department of Radiology, Uni-versity of Michigan Medical School. Board eligi-ble or Board certified. Physician will take partin the programs of patient care, teaching. andrLsearch carried on in the Department of Radiol-ogy. Physician will supervise the activities of thet-esident staff and aid in teaching residents andmedical students. Send resume to Box 180,SCIENCE. A Nondiscriminatory, Affirmative Ac-tion Employer.

Iowa State University seeks applicants in MO-LECULAR BIOLOGY for a faculty position inthe Department of Biochemistry and Biophysics.The appointment probably will be made at thelevel of Assistant Professor and is effective 1July 1975. Duties involve teaching and establish-ment of an imaginative research program. Sendresume and names of three references to: Dr.Donald Graves, Department of Biochemistry andBiophysics, Iowa State University, Ames, Iowa50010. An Equal Opportunity/Affirmative ActionEmployer.

QUEEN'S UNIVERSITYKINGSTON, ONTARIO, CANADADEPARTMENT OF PHYSIOLOGY

NEUROPHYSIOLOGIST applications are invitedfrom mammalian physiologists with the Ph.D.and/or the M.D. degree for appointment to afaculty position as Assistant Professor. Applicantsshould have an interest in sensory/motor physiol-ogy, proven research ability, and teaching experi-ence at undergraduate and graduate levels. Ap-plications to Dr. V. C. Abrahams, Chairman,Selection Committee, Department of Physiology,Queen's University, Kingston, Ontario, CanadaK7L 3N6, should include curricultim vitae andrames of three referees.

- IjIIIIEIPOSITIONS OPEN IIlHIIIiIIIIIIIII IDi11IIIIHIIIIIIIIPIPOSITIONS OPEN. ...... .........|lilszss^s"sx -- a

| wswWW||wwswwz-|Wouw mllllWnlllW WNWIII

HUMAN ANATOMY; GENERAL PHYSIOL-OGY. Two positions open at Assistant Professoror Associate Professor level; Ph.D. required.Primary duties will be teaching undergraduatesand master's degree graduate students; researchopportunities available and research activity en-couraged.Send resume and three letters of recommenda-

tion to Dr. Ann Bond, Chairperson, Departmentof Biological Sciences, Chicago State University,95th and King Dr., Chicago, Ill. 60628. AnAffirtnative Action Employer.

HUMAN BIOLOGYAssistant or associate professor ($11,316 to$18,432) starting September 1975. Primary instruc-tional duties in Human Anatomy and Physiology(majors and nonmajors) and DevelopmentalGenetics (graduate). Ph.D. in Physiology orAnatomy preferred, with training in human de-velopment and genetics and strong interest inteaching. Application deadline is 2 May 1975.Applications should be addressed to: Dr. CarolLydon, Department of Biological Science, Cali-fornia State College, Dominguez Hflls, 1000 EastVictoria Street, Dominquez Hills, CalIf. 90747.

INSTRUCTOR IN PHYSICAL THERAPYThe University of Michigan is seeking an in-uividual, preferably with a master's degree,cligible for licensure as a physical therapist inMicligan. Appropriate clinical experience inpnysical therapy, as well as academic and/orclinical teaching experience. Major responsibilitieswill include teaching Physical Agents, planningp ograms for continuing education, and participat-ing in various curriculum activities. Code #100HO.Scid resume to Box 179, SCIENCE. A Nondis-crimiiinatory Affirmative Action Employer.

PEDIATRIC NEUROLOGIST. A large univer-sity program for developmentally handicappedchildren, involved in interdisciplinary training ofstudents from a dozen professional disciplines,primarily at the graduate and postgraduate levels.desires a fully qualified pediatric neurologist tohead its pediatrics and neurology section. Whilethis will be the primary setting, the incumbentwill also spend a major portion of his timeteachiing in the clinics and wards of the univer-sity hospital and will hold academic appointmentsin the Departments of Pediatrics and of Neurol-ogy. Excellence in teaching and research poten-tial will be primary considerations. Position isavailable I July 1975. Harrie R. Chamberlin, M.D.,Director, Division for Disorders of Developmentand Learning, Child Development Institute, Uni-versity of North Carolina, Chapel HiIB, N.C.27514 (Telephone: 919-966-4417). An Equal Op-portunity/Affirmative Action Employer.

POSTDOCTORATEBIOCHEMIST

Stiburban Philadelphia, Pa., pharmaceuticalmanufacturer has available immediately a post-doctorate opening for a biochemist or chemistspecializing in protein chemistry. Knowledge ofmodern isolation, purification, characterization,and radiolabeling techniques desired. Send r6sum6and references to Employment Manager.

McNEILLABORATORIES, INC.

Fort Washington, Pa. 19034An Equal Opportunity Employer

POSTDOCTORAL POSITIONTo work on eukaryotic gene regulation. Bio-chemist with experience in enzymology and pro-tein-nucleic acid interactions is desirable. Salaryis $10,500 or more depending on experience.Please send curriculum vitae to:

Dr. Arthur P. BoBonDepartment of Biochemistry

University of Texas Southwestern Medical School5323 Harry Hines Blvd., Dallas, Texas 75235

POSTDOCTORAL POSITIONPostdoctoral position- available 1 May 1975 for

research in developmental neurobiology. Neuronalpatterning and specificity are being studied in thevertebrate nervous system. Experience in micro-surgical, microinjection, and electrophysiologicaltechniques is desirable. Send curriculum vitae andnames of three references to Dr. Howard Nornes,College of Veterinary Medicine and BiomedicalSciences, Department of Anatomy, Colorado StateUJniversity, Fort Collins, Colo. 80521.

SCIENCE, VOL. 188

* POSITIONS OPEN fl||""NEPHROLOGIST-The Division of Nephrologyin the Department of Medicine at the Universityof Alabama in Birmingham has available a posi-tion at the Assistant Professor or the AssociateProfessor level. The position is open to qualifiedindividuals at a senior level fulfilling three criteria.First, the individual must have expertise in thecare and management of patients with renal dis-ease and in the operation of a hemodialysis unit.Second, the individual must have a firm commit-ment to teaching programs oriented to medicalstudents, graduate students, house officers, andfellows. Finally, the individual should have aresearch background and be able to carry outindependent research, preferably in renal micro-puncture. Apply to the Dividon of Nephrology,University Station, Birmingham, Alabama 3S294.Telephone: 20S-934-3S8S. An Equal Opportunity/Affirmative Action Employer. Expiration date forreceipt of applications: 1 June 1975.

PLANT ECOLOGIST-ASSISTANT PROFES-SOR. Full-time faculty position beginning fall 1975.Ph.D. and publications required. Duties involve:teaching introductory general ecology course.plant ecology, and either phycology or limnology;supervision of master's level graduate studentsand development of active research program.Salary competitive. Send curriculum vitae andthree letters of recommendation to: Chairman,Biology Department, Western Michigan Univer-sity, Kalamazoo, Michigan 49008. An Equal Op-portunity Employer.

PhD or Equivalent ExperienceThe Environmental Sciences Division of Oak RidgeNational Laboratory works in conjunction with otherORNL divisions, other National Laboratories, and abroad spectrum of agencies and institutions to conductinterdisciplinary research aimed at assessing local,regional and national impacts of both fossil andnuclear energy systems. All aspects of environmentaleffects of fuel cycles are being addressed. New posi-tions are available in the following areas:

* Energy facility siting at local and regional scales

* Analyses of ecosystem and health effects of pol-lutants from energy technologies

* Evaluation of potential environmental impacts fromnew energy systems

* Ecological pathways and biogeochemical cycling ofelements in ecosystems

* Regional environmental systems analysis and com-puter simulation

* Numeric data information systems

* Ecological benefit/cost assessment of energy systems* Land use and natural resource characterization

Send inquiries to: Dr. J. J. PinajianEmployee Relations DivisionOak Ridge National Laboratory

;n P. O. Box XOak Ridge, TN 37830

An Equal Opportunity EmployerU. S. Citizenship Required

AAAS Membershipsand Subscriptions

* Whenever you write us about youirmembership or subscription, pleaseattach a Science address label toassure prompt service.

* Mail to: Membership and Subscrip-tion Records, AAAS, 1515 Massa-chtisetts Ave., NW, Washington, D.C.20005.

E Change of Address: Please provide6 weeks' notice. Paste an addresslabel from a recent issue in thespace provided. Print new addressbelow.

al Query: If you have a question, placeyour address label here and attachthis form to your letter.

* To join or subscribe: Mail this formwith your payment, mark the appro-priate boxes, and print your nameand address in the space below.(For renewals, attach label.)

As of 1 May the following rates willbe in effect:

IIIII I

I I

I II II I

I II I

I II ATAH I

I II II II I*1 I,- - - - -

El Membership rates (individual only)El $25 USA nL $31 Canada, PUAS El $32 ForeignE $55 Airlift to Europe, North Africa, Near East

E Subscriber ratesEl $50 USA E $57 Canada, PUAS El $58 ForeignE $80 Airlift to Europe, North Africa, Near East

E Payment enclosed El Bill me later

Name Please printIII Address

II city State Zip MT04

----------------------------------------------------------------------------

Il APRIL 1975 181

'BIOMEDICAL PROGRAMThe Oak Ridge National Laboratory announcesan opening for an individual with diversifiedtraining and interests. Candidates with doc-torate and postdoctoral research training inprograms such as biochemistry, pharmacology,or toxicology will be considered. The dutiesentail developing research projects involvingthe design, synthesis, and testing of uniqueradiopharmaceuticals to be used in nuclearmedicine and biological research. The positionis with the Isotopes Division and involves col-laboration with the Biology Division and otherdivisions of the Laboratory and interaction withthe clinical nuclear medicine programs in thesurrounding area.The Oak Ridge National Laboratory offers ex-cellent working conditions and is located lessthan 10 miles from Oak Ridge and is only20 miles west of Knoxville, Tenn., population200,000, in the heart of east Tennessee'smountain and lake region. The Laboratory isoperated by the Nuclear Division of UnionCarbide for the Energy Research and Develop-ment Administration.

Send detailed rdsum= includingsalary requirements and tran-scri pts to:Dr. J. J. PinajianEmployee Relations DivisionOak Ridge National LaboratoryP. O. Box XOak Ridge, Tenn. 37830

An Equal Opportunity Employer

A SYMPOSIUM

MOLECULAR STUDY OF EVOLUTIONOrganized by Francisco J. Ayala

at the University of California, DavisJune 17-18, 1975

sponsored by:

The Society for the Study of EvolutionThe American Society of Naturalists

I. June 17 A.M. Chaired by R.W. AllardR.K. Selander: Genetic Variation in Populations

M. Soule: Patterns of Protein VariationG. Johnson: Genetic Polymorphisms: Enzyme Functions

J.W. Valentine: Genetic Strategies of Adaptation

11. June 17 P.M. Chaired by T.H. JukesJ. Avise: Genetic Differentiation During Speciation

L. Gottlieb: Spec iation in PlantsM. Goodman: Use of Protein Sequences in Phylogeny

W. Fitch: Protein Changes as Evolutionary Clock

111. June 18 A.M. Chaired by Eric DavidsonR.T. Hinegardner: The Evolution of Genome Size

G. Galau: Evolution of Repetitive Sequences of DNAA. Wilson: Structural Genes Vs. Gene Regulation

Registration Fee: $10.00,Regular, $5.00 StudentSend Registration Fee to, and request additionalinformation from: Ms. Carolyn Norlyn

Conferences and Campus ServicesUniversity of CaliforniaDavis, California 95616

18111 APRItL 1'975

illlllllllllllllll,POSMnONS OPEN ||||||||||11111l

POSTDOCTORAL INVESTIGATORBIOCHEMICAL PARASITOLOGY

Mechanisms of drug action on African trypano-somes (drug binding to DNA and RNA poly-mei ases; lysosomal enzyme studies). RequiresPh.D., preferably in biochemistry. Salary: $10,200+ fringes. USAMRDC contract. Renewal possible.Reply deadline is 12 May 1975. Starting date: 1July 1975. Send applications to Prof. A. C. Za-halsky, Department of Biological Sciences, South-ern Illinois University at Edwardsville, Edwards-ville, Ill. 62025. Telephone: 618-692-2411 or 3467.An Equal Opportunity and an Affirmative Action

Enmployer.

POSTDOCTORAL POSITION ($10,500 per an-nium) available for protein biochemist. Researchon collagen and elastin, beginning April to September 1975. Send curriculum vitae, three lettersof recommendation, and information requests to:

Dr. N. R. DavisDepartment of Oral Biology

University of AlbertaEdmonton, Alberta, Canada

POSTDOCTORAL/RESEARCH ASSOCIATE.Position available July 1975. Research projects inmembrane biophysics and basic electrophysiologi-cal studies relating to multiple sclerosis. DesirePh.D. in physiology or pharmacology with train-itg in electiophysiological techniques. Send cur-riculum vitae and names of three references toDr. C. L. Schauf, Department of NeurologicalSciences, Rush Medical College Chicago, Illinois60612. Applications from qualified women andmninority candidates are encouraged.

RESEARCH ASSOCIATE (Ph.D. or M.D.)

With experience in cellular neurophysiology toparticipate in epilepsy research program and neu-ioscience training program. Send curriculum vitaeand names of referees to David A. Prince, M.D.,Professor and Chairman, Department of Neurol-ogy, Stanford Medical Center, Stanford, California94305. Stanford University is an Equal Oppor-tuinity Employer.

RESEARCH ASSOCIATEMuscle Biology Group invites applications fromi.,divsduals witn experience in electron microscopy,light microscopy, and histological techniques.lraining in antibody techniques and proteinchemistry desirable. B.S. or M.S. in biologicals.iences or chemistry required. Send resume andiiames ot three references to: Dr. Darrel E. Goll,Muscle Biology Group, Iowa State University,Ames, Iowa bOO10. Iowa State University is anEqual Opportunity/Affirmative Action Employer.

Ph.D. or M.D. RESEARCH ASSOCIATE posi-tion in pathology department available immedi-ately for experienced behavioral pharmacologistwith background knowledge in neurophysiologyand psychology to study the effects of organo-merctiry compounds on primates and rodent adultsand newborns. Preferably familiar with testingfor behavioral interactions, temporal discrimina-tion, and operant conditioning. Salary up to$15,000 commensurate with training and experi-ence. Applicants accepted until 15 April 1975.Send curriculum vitae and bibliography to N.Karle Mottet, M.D., Professor of Pathology,University of Washington School of Medicine,Seattle, Washington 98195. An Equal Opportunity:Elployer.

RESEARCH BIOCHEMISTDivision of Dermatology, Department of Medi-cine, Duke University Medical Center, is seekinga Biochemist, at least 2 years post Ph.D., withexperience in protein purification, enzymologyand proteinase chemistry. Salary $18,000; facultyrank commensurate with experience. Inquire Ger-ald S. Lazarus, M.D., Montefiore Medical Center,111 East 210 St., Bronx, N.Y. 10467.

TEACHING POSITION-AIR RESOURCESEffective September 1975. Doctorate required,

or within 1 year of completion, in Natural Re-sources or related field. Will teach undergraduateand graduate course in air resources plus under-gra, uate introductory environmental course.Send resume and credentials prior to 1 May

1975. to Dr. Clyde Hibbs, Chairman, Departmentof Natural Resources, Ball State University, Mun-cie, Indiana 47306. An Equal Opportunity/Affirm-atisie Action Employer.

182

PROFESSOR AND CHAIRMANENTOMOLOGY AND NEMATOLOGY

DEPARTMENTApplications are invited from candidates with

capabilities in administration, research, teaching,and extension to provide leadership and to ad-ininister the affairs of an unusually large andhighly diversified department. In close coopera-tioni with fellow professionals (on campus andaround the state), our goal is to foster an un-surpassed center of excellence in entomology andi.matology. Send correspondence with resumeana names of three references to Dr. S. H. Kerr,Search Committee Chairman Entomology andNematology Department, Mc(arty Hall, Univer-sity of Florida, Gainesville, Fla. 32611. Detailedinformation about the department is available onrequest. An Equal Opportunity/Affirmative Actionr ,,gployer.

IHE U.S. ENERGY RESEARCH AND DE-VELOPMENT ADMINISTRATION (DIVISIONOF BIOMEDICAL AND ENVIRONMENTALRESEARCH) supports the Mid-Pacific MarineLaboratory on Enewetak Atoll as an extension ofthe Hawaii Institute of Marine Biology. The lab-oratory has been reorganized and expanded to ayear-round operation, with special interest in pro-grams related to the distribution of radionuclidesand other materials in the environment, the cyclingof materials through the system, and possible im-plicatior.s to man. Interested researchers contactDr. Stephen V. Smith, Director Mid-Pacific Ma-rine Laboratory, P.O. Box 1346, Kaneohe, Hawaii96744.

SEDIMENT CHEMIST to work cooperatively inesttLiarine environmental and pollution-related stud-ies. Required to supervise existing staff in con-tinued monitoring of nutrients and pollutants inthe water column and to carry out original re-search on flux of materials between seawater andsediments. A holistic approach to environmentalproblems, willingness to participate in coordinatedmultidisciplinary research programs essential.Ph.D. or equivalent. Send resume, research in-terests, and goals to Dr. H. A. Fehlmann, Smith-so;.ian Institution, RFD 1, Box 194-C, Fort Pierce,Fla. 33450.

California State University, Chico. Two tempo-rary positions available 1975-76: (i) METEOR-OLOGY-ASTRONOMY, Assistant/Associate Pro-fessor to teach lab course in meteorology plusseminar plus astronomy labs; (ii) GEOLOGY, As-si tant lProfessor to teach lithology, optical pe-trology, plus others. For details write to: Dr. P.A. Lydon, Department of Geology and PhysicalScience, California State University, Chico, Calif.95929. All persons, regardless of race, nationalorigin, sex, or religion, are urged to apply.

VETERINARY PATHOLOGIST. Independentcontract research laboratory has an immediateopeniiag for a pathologist experienced in grossand microscopic pathology of dogs, primates, androdents. Specific experience in toxicologic pathol-ogy desirable. Salary commensurate with experi-ence. We are located in a very desirable area ofsouthwestern Michigan just 10 miles from Kala-mazoo which offers excellent living conditions andcultural activities. Send detailed resume to: J. M.Ragen, Director, Personnel, International Re-search and Development Corp., Mattawan, Michi-gan 49071. An Equal Opportunity Employer.

VIROLOGISTS. Two positions immediately avail-able for junior staff (Research Assistant Professor)to work on genetic and biochemical characteriza-tion of human respiratory RNA viruses includingmutants being considered for vaccine use. Appli-cants should have experience in cell culture andcontemporary methods of molecular virology. Ad-dress inquiries with resumes to: Dr. R. W. Simp-son, Waksman Institute of Microbiology, RutgersUniversity, New Brunswick, New Jersey 08903.An Equal Opportunity Employer.

illllllllllllllllllllllFELLOWSHIPS i|||||||||||||||||||

POSTDOCTORAL FELLOWSHIPS INBIOCHEMISTRY

NI H sponsored fellowships are available for1975-76. Broadly based training program with re-search on basic and human disease oriented prob-lems. Chemistry or biology degree required. In-qui ies to Dr. Thomas E. Conover, Departmentof Biological Chemistry, Hahnemann MedicalCollzge, 230 North Broad St., Philadelphia, Penn-vivania 191(2.

-- -------

POSTDOCTORAL FELLOWSHIPS INONCOGENESIS

Biologists, biochemists, or biophysicist to collabo-rate on cell and animal studies of the mechanismof oncogenesis. Studies will emphasize, but willnot be restricted to, transformation by radiation(ionizing and nonionizing). Salary starts at $950per month plus fringe benefits. Send curriculumvitae, three references, and statement of researchinterests to: R. A. Johns, Argonne National Lab-oratory, Department 100-D, 9700 South Cass Ave-nue, Argonne, Illinois 60439. An Equal Oppor-tunitY Employer, M, F.

POSTDOCTORAL FELLOWSHIPS FOR RE-SEARCH TRAINING in the social, psychologicaland physiological aspects of aging are now avail-able from the Duke University Center for theStudy of Aging and Human Development. Thefellowships will run for 1 or 2 years and areopen to those who hold the M.D. or Ph.D. de-gree by fall 1975. Inquiries to:

Dr. Gail R. MarshBox 3003

Duke University Medical CenterDurham, N.C. 27710

-~

NEW YORK OCEAN SCIENCE LABORATORYMarine Archaeology, 27 May-14 June (Drs. N.Stavrolakes and H. Moeller). Reproduction andDev-elopmnent Marinie Organisms, 16 June-1 1 July(Drs. J. Morrill anid J. Wourms). Workshop:Mathematical Modeling of Marine Environment.14-18 July (Dr. L. Thatcher). Marine Geochem-istry, 21 July-8 August (Drs. E. Catanzaro and J.Alexander). Chemistry and Pharmacology ofMarine Organisms, 11-29 August (Drs. E. Pre-miiuzic. A. Goldberg, G. Ruggieri, M. Stempien,R. Nigrelli, F. Johnson, A. Marderosian et al.).Application deadline: 3 weeks prior to abovedates. Write: Dr. J. P. Wourms, Education Co-ordinator, New York Ocean Science Laboratory,Montauk, N.Y. 11954.

IIIIIIM1DOCTORAL PROGRAM IN

ENVIRONMENTAL SCIENCE-PHYSICSTEACHING ASSISTANTSHIPS AVAILABLEThis multidisciplinary program is designed to

provide an opportunity for students interested inan academic graduate physics program to partici-pate in environment-related research. Formalcourse work emphasizes sound training in physicscoupled with seminar and course work designedto familiarize students with problems of the en-vironmiient. We encouirage applications froti won7-en and members of minority groups.Appointments effective: Fall 1975.Contact Dr. Mark Gurevitch, Chairman, De-

partment of Physics, Portland State University,P.O. Box 751, Portland, Oregon 97207.

111111111111111 PAPERS SOLICITED llllll!llllllllCALL FOR SCIENTIFIC PAPERS

The 1975 fall meeting of the Eastem Psychi-atric Research Association (EPRA) will be heldin New York in October 1975. Previous EPRAmeetings include Genetics (Kallmann); Schizo-phrenia: Current Concepts and Research (Sankar);Hallucinations (Keup) and more recently MentalHealth in Children. The fall 1975 meeting is onNeurophysiology in Psychiatry-Recent Researchand Clinical Applications. Original scientific offer-irgs and papers are invited for consideration forinclusion in this program. Papers based on defini-tive and competent research are only invited.The deadline for the abstracts is 1 May 1975.The full paper must be sent to Dr. P. V. SivaSa-kar, President, Eastern Psychiatric ResearchAssociation, Queens Child Psychiatric Center,Bellerose, N.Y. 11426, by 15 August 1975.

I[llgglgllglIII( M AR E PLACE ||||||1|1111111


SCIENCE, VOL. 188

AQUARIUS ELECTRONICSPioneers in reliable biofeedback

systems.® EEG, EMG, ESP

ZXq9 Precision instrumentation for'i\ educators and researchers.E ) Ctistom design services also

available.P.O. Box 96 5,

Albion, Calif. U.S.A. 95410

POSMONS OPEN 11101111.111 111101111110111111111l FELLOWSMPS

" I LookEd AT ThE bEST MIICROSCOpESMONET CAN bUYANd boUjhT A BAIPNLA"

No other research quality laboratorymicroscope gives you so much forso little. You see better, you seemore because of Balplan's flatfield, infinity-corrected opticalsystem. Crisp, sharp image defi-nition extends edge to edge overthe entire, large 20mm field ofview. Contrast, resolution andcolor correction are the best ob-tainable due to new fluorite opti-cal elements and newly developedvacuum coatings. Photomicrographyis richly rewarding whenyou're using Balplan. AndBalplan's exclusive sus-pended inner arm insuresvibration-free images withpositive stability. There isnever any image drift.

Balplan offers unprecedented versatility for amultitude of uses because of its modularity.

Design your own personal Balplan for clinical,research and educational applications froma comprehensive selection of illuminators,

stages, objeectives, nosepieces, viewingheads and camera formats.

Add or subtract a wide selection of com-I ponents to fit your specific needs in biology,

pathology, hematology, cytologyand bacteriology.

The Balplan experience is truly exciting. Seefor yourself. Write for a free Balplan catalog(#31-2411) and a free demonstration in your

lab with your own specimens.There is no obligation.

' i,

Write to Bausch & Lomb, Scientific Optical Products Division, 20716 Bausch Street, Rochester, N.Y. 14602.

n.A 67C 0 59 i 9MCMA4I8ER99 N 4.MCMASTER UNIVz IGRAR IAN MRS R0BiNOWH EAL'H C I L IEHAMILTON 00 ONT CANEl! l l..< I.;..,! .11,,,l;.,;

The AMINCO AMINALYZER Fluorometric Liquid Chroma-tography System is a high-speed, high resolution instrumentdesigned specifically for the fluorometric determination ofamino acids, peptides, and proteins at picomole levels,utilizing Fluram * (fluorescamine), a new high-sensitivityfluorogenic reagent or o-phthalaldehyde (OPA)**.The new AMINALYZER system can separate, detect, and

quantify samples as small as 10-11 to 10-12 moles.The AMINALYZER system consists of a counter-top ion

exchange chromatograph utilizing single-column, high-pressure amino acid separation techniques, and a newratio filter fluorometer which functions as a detector.

Fluorescence assay of the column effluent is automatedby means of precision pumps adjusted to deliver reagents,buffer, and sample solution in appropriate proportions.Reaction time and temperature are closely controlled formaximum sensitivity and stability.

Features of the chromatographic portion of the AMI-NALYZER system include: single-column methodology foramino acids; fully adjustable automatic buffer programmingfor up to four buffers; fully adjustable column re-equilibra-tion; automatic instrument turn-off for unattended opera-tion; high-pressure operation with capabilities up to 5,000psig; thermostated air bath column oven, with front paneltemperature display; loop valve sample introduction; solidstate pressure detector, and over-pressure protection; glasslined steel colum'ns or 316 stainless steel columns.The detection methodology is based on the Fluram or

the OPA procedure. The fluorometer-detector is specificallyresponsive to arhino acids, peptides, proteins and othercompounds havirig primary amine functional groups.

Features of the detector include:* Ratio filter fluorometer for freedom from drift, varia-

tions in sensitivity, and source fluctuations;* Low dead-volume flow-cell for high resolution, high-speed separations;

* New all solid-state photometer with the latest datahandling techniques to give excellent signal-to-noiseratio which ensures picomole detection levels;

* Direct interfacing with modern digital data processors.For further information, contact AMINCO.

Roche Diagnostics* Marc Roth, U.S. Patent No. 3,718,432

Booth H-110 at FASEB

EAMiNCO®AMERICAN INSTRUMENT COMPANYDIVISION OF TRAVENOL LABORATORIES, INC., Silver Spring, Maryland 20910


AmInALYzER® systemA fluorometric liquid chromatography systenm with picomole sensitivity

for amino acid analysis including prolire or hydroxyproline

NNMWAOOI"

i775

v

GUARANTEED 400,000 · 2005. 7. 19. · the new super duper It's a technical wizard. It's the...

Documents

Transcript of GUARANTEED 400,000 · 2005. 7. 19. · the new super duper It's a technical wizard. It's the...