oi 0IS(

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convenient way to record and store your photo's and slides. Dexamethasone [1, 2,4-'H(N)] NET-415METRIC SCALE LABELS. A calibrated scale label of 3cm or 30-50Ci/mmole $45/250,Ci $85/lmCi $320/5mCi6cm relates size of specimen or subject at a glance. Supplied in . 3convenient rolls with removable adhesive, these convenient Prednisolone [6,7-3H(N)] NET-406labels stick tightly yet won't mar surface when removed. 40-60Ci/mmole $47/250,uLCi $90/lmCi $350/5mCiTIME INCH SCALE LABELS. Calibrated scale of 6 inches is Corticosterone [1, 2-3H(N)] NET-182imprinted on pre-cut self-sticking labels. 40-60Ci/mmole $32/250,tCi $72/lmCi $215/5mCiTIME PHOTO SLIDE LABELS. Printed with a red dot to assure Corticosterone [1, 2,6, 7-3H(N)] NET-399proper placement in projector or carriage. Available In two 80-105Ci/mmole $43/250,aCi $85/lmCi $235/5mCisizes for either 2" x 2" mounts or lantern slides.Write us for free samples and literature on these and other Hydrocortisone [1, 2-_3H(N)] NET-185Time Products for the laboratory. We will also send the name 40-60Ci/mmole $32/250,uCi $72/lmCi $215/5mCiof your nearest dealer. Hydrocortisone [1,2,6, 7-3H(N)J NET-396

NOTE: NEW ADDRESS. We have recently moved into new facili- 80-100Ci/mmole $43/250,uCi $85/lmCi $235/5mCities; enlarged and automated to serve you better. Packaging. Benzene-ethanol solution, 9 1 in combi-vial

PROFESSIONAL TAPE COMPANY, INC. New England NuclearDEPARTMENT 12 575 Albany Street, Boston. Mass. 02118

144 TOWER R BURR RIDGE (HINSDALE) ILL 60521 Customerservice 617-482-9595

NEN Canada Ltd, Dorval, Quebec; NEN Chemicals GmbH, Dreieichenhain, Germany.

Schwarz/Mann AAAS SOCIO-PSYCIIOLOGICALBulletin Board PRIZE

I

Please write to Schwarz/ MannDivision of Becton, Dickinson and CompanyOrangeburg, New York 10962Telephone 914 359-2700

5201 SCIENCE, VOL. tr(,

Your Lab is More Efficient with

TIME PHOTO-LAB LABELS

Pressure-sensitive Time Photo-Lab Labels provide you with a

Ilhrough the gencrosity of the late Arthur F.Bentlcy, the AAAS ofTers an annual prilze of$1 000 for- a mcritorious cssay that furthcrs un-derst'andinig of the psychological-social -cuiltir-abchavior of lhumani beings.

The AAAS Socio-Psychological Priie is in-tenided to encoula-ge studies and analyses otsocial behavior basect on explicitly stated as-sullptions or postulates leading to conclusiolnsor deductions that are tested by systemcaticemilpiricail research or. stated in other terimis, toencourage in social inquiry the developimient and.ipplicationi of the kind of dependable methodol-ogy that has proxved so fruitful in the naturalsciences.

F7ntries shoUld present a comipleted analysisOf a problemn the relevant data, and an ititetlpre-tation of the datLi in terims of the postulates xxithwhich the study began.

UlnpuLblished manLscripts anid11aInLuscriptspublishcdiafter I January 1972 are eligible.The deadline for receipt of entries in the 1973contest is 1 Septeimiber. For instructions oii howto submit aLn entry. xvirite to: Socio-PsychologicalPrize Contest, 1515 Nlassachusetts Ave., NWV,Washington, D).C. 20005.

Personnel IPlacementI

I|IIIII POSITIONS WANTED 11JIfljjfljj|jj1JAquatic Ecologist, M.S. 1972. Seeks teachingand/or research position. Experience in teach-ing, environmental microbiology, pesticide toxi-cology, field biology, biostatistics. Interest-monolayer and pesticide interactions withtrophic relationships in marshes. Also curriculumdevelopment in general biology courses specifi-cally. Please reply to Box 255, SCIENCE. X

Astrophysicist, 29, Ph.D. Active research andpublications in cosmology, relativity. Experiencein teaching physics and astronomy and in de-veloping extensive liberal arts astronomy andspace science program in previously nil astro-nomical environment. Seeks college or univer-sity faculty position with opportunity for re-search and course development. Box 256, SCI-ENCE. X

Blochemist/Neurochemist. Biochemical basis ofmental disease, psychoactive drug effects onbrain. Established research program, publica-tions. Seeks research-oriented position. Box 257,SCIENCE. X

Cardiovascular Physiologist-Pharmacologist. Ex-perienced teacher/researcher, age 38. Desires posi-tion in medical school, industry, or government.Published in area of congestive heart failure. Box216, SCIENCE. 5/4, 11

I||I|IIIIIIIII|IIII POBlTIONS OPIEN 111111|||||||||BIOCHEMIST

Ph.D. or M.D. Basic research in postnatal de-velopment of enzymes and/or biochemistry ofreproduction. Research laboratories of Depart-ment of Obstetrics and Gynecology, ColumbiaUniversity-affiliated hospital. Send resumd toBox 258, SCIENCE.

Equal Opportunity Employer MIF

DIRECTOR OF CLINICAL IMMUNOLOGYLABORATORIES

OF THERUSH MEDICAL CENTER

The Department of Immunology of Rush-Pres-byterian-St. Luke's Medical Center is seekinga qualified individual to supervise its hospitallaboratories. The procedures involved includeradioimmunoassay, immunofluorescence, hemag-glutination, immunoprecipitation, complement con-sumption, protein separation, cellular immunol-ogy, and so forth, with the supervision of 10to 20 people. Individuals with doctoral degreesin medicine, microbiology, biochemistry, physi-ology or engineering should respond to theaddress indicated below for further information.The individual selected will contribute to theteaching programs of the medical center, havefacilities for investigation, and will receiveappropriate rank in the Rush Medical College.For further information write the Chairman,Department of Immunology, Rush MedicalCenter, 1753 West Congress Parkway, Chicago,Illinois 60612.

THE AUSTRALIAN NATIONAL UNIVER-SITY is inviting applications for appointment tothe post of Professor and Head of a Departnentof Genetics in the Research School of Bio-logical Sciences. The principal interest of thedepartment is in attempting to interpret mecha-nisms of adaptation and evolution in terms ofmolecular genetics. Salary currently $A16,369per annum. (Academic salaries expected to in-crease during 1973.) Essential that prospectiveapplicants obtain further information from theAcademic Registrar, P.O. Box 4, Canberra,A.C.T., 2600, Australia. Applications close on 28May 1973.

MAMMALIAN PHYSIOLOGISTApplications are invited for 1-year position asAssistant Professor of Zoology to teach twoquarter Upper Division Mammalian Physiologycourses and one additional service course. Ph.D.desired. Position to replace faculty member onsabbatical. Curriculum vitae, reprints, threeletters of recommendation should be submittedby 1 June to Dr. Lee H. Metzgar, Chainnan,Search Committee, University of Montana, Mis-soula, Montana 59801.

An Equal Opportunity Employer

4 MAY 1973

Corporate Research CenterContinued expansion of the vigor-ous and productive research effortat Schering provides opportunitiesfavorable to career advancement,satisfying professional growth andachievement. We emphasize an en-vironment that utilizes the fullestuse of your abilities, providing ex-cellent facilities and support serv-ices. Our location with easy accessto all the New York area's edu-cational, cultural, recreational andother resources offers desirablesuburban or urban living.

Please direct resume or vitae in fullconfidence to Research Personnel,for immediate consideration.

SOUDSPh.D. in Pharmaceutics

Industrial or academic experience inthe development of solid dosageforms, using sophisticated approachesto tablet research (including optimiza-tion methods). Supervisory experienceand speaking knowledge of French orSpanish desirable.

TOPICALS/AEROSOLSM.S. in Pharmaceutics

At least two years of experience in thedevelopment of topical and aerosolformulations is required.

STERILE FORMSM.S. in Pharmaceutics

Strong chemistry background, with in-dustrial experience and training in Bio-pharmaceutics. Focus on thedevelopment of ophthalmic, otic andparenteral sterile dosage forms.

SCI4CRING CORPORAPION60 Orange St., Bloomfield, N.J. 07003Applicants of all races are encouraged to apply

Female-Male

PHARMACEUTICAL

RESEARCH

PHYSICIAN

An innovative medical sci-entist is needed to assist incurrent biomedical and tech-nical projects and help sparkthe exploratory research sec-tion of a major pharmaceu-tical company located in theEastern United States.

The position offers a stimu-lating career for an M.D. witha Ph.D. degree interested innew biomedical and tech-nological solutions to medicalproblems. Salay is negotiable.

Send curriculum vitae to:Box S 1587,810 7th Ave.,NYC 10019An Equal OpportunityEmployer M/F

WORLD HEALTH ORGANIZATION

HEALTH HAZARDS OF THEHUMAN ENVIRONMENT

Prepared by

100 specialists in 15 countries

The volume consists of fourparts:

I The community environ-ment

11 Chemical contaminants andphysical hazards

Ill Surveillance and monitoring

IV Public health principles andpractices of intervention

387 pages $11.00

Orders may be addressed to:

World Health Organization

Distribution and Sales

1211 Geneva 27, Switzerland

521

m- MINkIN

I

...........ON

d

I

POSITIONS OPEN J _ POSITIONS OPENNM '1~0-PSTIN-OECHAIRMAN, ENTOMOLOGY DEPARTMENT

Applications are invited for the position ofchairman of the Department of Entomology, TheAmerican Museum of Natural History. Required:Doctorate, proven excellence in systematic re-search, some administrative experience. Rank andsalary open. Send curriculum vitae, names ofsuggested references, letter detailing research in-terests and plans, and copies of research papersto Acting Chairman, Department of Entomology,The American Museum of Natural History, Cen-tral Park West at 79th Street, New York, N.Y.10024.

An Equal Opportunity Employer MIF

CHAIRPERSONDepartment of Environmental Health; seekingcandidate who has strong interest in research,administrative capabilities, and ability to workwith outside agency and legislative personnel.Minority and women candidates encouraged.Write Betty S. Gilson, M.D., Associate Deanand Chairperson, Search Committee, School ofPublic Health and Community Medicine, Uni-versity of Washington, Seattle, Washington 98195.

CITRUS PHYSIOLOGIST AND BIOCHEMISTPh.D. and minimum of 3 years' experience inpre- and post-harvest physiology and biochem-istry of citrus fruit. Knowledge of methods fordetection and control of pollutants in citruspackinghouse and processing plant effluents man-datory. Send resume and references to PersonnelDirector, P.O. Box 148, Lakeland, Florida 33802.

THE AUSTRALIAN NATIONAL UNIVER-SITY is inviting applications for Field Directorof the North Australian Research Unit. This isa new unit concerned with interdisciplinary re-search in northern Australia on mainly socio-economic but also biological and ecologicalproblems. Precise conditions of appointmenitwill be determined in relation to qualifica-tions and experience of appointee. Salary prob-ably in the range $A11,234 to $A13,172 perannum. (Academic salaries expected to increaseduring 1973.) Appointment for 5 years withpossible extension. Essential that prospectiveapplicants obtain further particulars from theAcademic Registrar, P.O. Box 4, Canberra,A.C.T., 2600, Australia. Applications close on 15June 1973.

NEUROENZYMOLOGIST. Postdoctoral Fel-lowship (I to 2 years). To study enzyme systemsinvolved in metabolism of brain glycolipids. Ex-perience in all aspects of enzyme chemistry es-sential.

Location: New York Metropolitan area in awell-equipped University-affiliated Hospital Re-search Institute.

Salary: $13,000 (plus liberal fringe benefits).Send curriculum vitae and two references to:

Box 254, SCIENCE

NEUROLOGIST with strong academic back-ground in clinical neurology and basic neuro-logical science (neurochemistry/neuropharmacol-ogy preferred) for appointment to full-timefaculty position available 1 July 1973 or later.Opportunities to participate in training programin clinical neurology and basic neurologicalsciences and to develop independent researchprogram. Send curriculum vitae and names ofthree referees to David Prince, M.D., Chairman,Department of Neurology, Stanford UniversitySchool of Medicine, Stanford, Calif. 94305. Stan-ford University has a faculty affirmative actionprogram.

DEPARTMENT OF PHYSIOLOGYHARVARD MEDICAL SCHOOL

This department is considering candidates inthe fields of mammalian and cell physiology fora faculty appointment. Appointee will be ex-pected to do independent research and to par-ticipate in the departmental teaching program.Interested persons should send their resumes,copies of their most significant publications,and the names of two references to Dr. ElwoodHenneman, Chainnan, Department of Physiology,Harvard Medical School, Boston, Mass. 02115.Havard University is an equal opportunity em-ployer.

PHYSICAL OCEANOGRAPHERApplications are invited for the position of

Associate Professor or Full Professor to teachand carry out research in physical oceanographystarting August 1973, or thereafter. Applicantsmust have a Ph.D. and 6 to 10 years of relevantpost-Ph.D. experience. Fields of interest couldbe geophysical hydrodynamics, turbulence, waves,tidal theory, numerical modeling, or other.The Institute operates a 65-foot vessel, is

housed in new quarters (20,000 square feet),and is focused on continental shelf and shallowwater areas. A chair in Oceanography is presentlyvacant.

Applications should be sent to: Dr. John C.Ludwick, Director, Institute of Oceanography,Old Dominion University, Norfolk, Virginia 23508.

An Equal Opportunity Employer522

SCRIPPS INSTITUTION OF OCEANOGRAPHYinvites application for position at the AssistantProfessor through Professor level in physicaloceanography. Candidates should have demon-strated an outstanding ability in research inbroad fields encompassing dynamical, experi-mental or descriptive aspects of physical ocean-ography and in communicating current knowledgeof oceanography to Ph.D. students and others.Applicants should send r6sumes and lists of pub-lications to Dr. J. R. Curray, Chairman, Gradu-ate Department, Scripps Institution of Oceanog.raphy, University of California, San Diego, Box109, La Jolla, California 92037 before 1 June1973. The University of California is an affirma-tive action employer.

TWO FACULTY OPENINGSThe Center for Genetics

The University ofIllinois Medical Center in Chicago

l) RESEARCH ASSOCIATE interested in lab-oratory animal medicine and tissue culture.Must have D.V.M. or aquivalent.

2) HUMAN BIOCHEMICAL GENETICISTinterested in polymorphic systems. Must haveexperience in human genetic counseling. Ph.D.or equivalent required.

Applications, including a curriculum vitae, se-lected reprints of published papers, three lettersof reference, and a statement of current researchinterests, should be sent to: Director, The Cen-ter for Genetics, University of Illinois MedicalCenter, 1853 West Polk Street, Chicago, Illinois60612. [The University of Illinois has an Affirma-tive Action Program. Women and minority per-sons are encouraged to apply.]

RESEARCH IMMUNOLOGISTGrowth of leading ethical veterinary drug com-pany requires permanent addition of doctoratein Immunology to our Research and Develop-ment staff. Right candidate must be able to planand conduct immunological research, as well asadvise and consult other R & D staff through-out the company. Recent Ph.D.'s acceptable,prefer some postdoctoral experience. Salary openand commensurate with experience. Top facili-ties, work environment, and benefit program. Youare invited to submit r6sumE including expectedearnings in strict confidence to:NORDEN LABORATORIES, INCORPORATED

ATTN: J. P. JUDT, PERSONNELP.O. BOX 80809

LINCOLN, NEBRASKA 68501Subsidiary of Smith Kline and French Labo-ratories, Philadelphia, Pa.

SENIOR SOCIAL SCIENCEFACULTY POSITIONS

Available in the new environmentally orientedGeorge H. Cook College, Rutgers University,scheduled to open September 1973. Please sendcurriculum vitae to: Dr. Andrew P. Vayda,Acting Associate Dean, CAES, Rutgers Univer-sity, P.O. Box 231, New Bunswick, N.J. 08903.A Nondiscriminatory Affirmative Action Em-ployer.

SYSTEMS ECOLOGISTApplications are invited for position of

Assistant Professor effective 1 September 1973.Post includes teaching a large undergraduatecourse in introductory ecology. A research in-terest in systems modeling is desirable.

Applicants should submit curriculum vitaeand the names of three references by 15 July1973 to: Dr. W. G. Barker, Chairman, Selec-tion Committee, Department of Botany andGenetics, University of Guelph, Guelph, Ontario,Canada NIG 2W1.

TEACHING ASSOCIATE: Duties include teach-ing in veterinary physiology but permit graduatestudy toward M.S. and Ph.D. Salary dependenton experience and percentage of time devotedto graduate study. Position available immediate-ly. Direct inquiries to Dr. A. R. Twardock,College of Veterinary Medicine, University ofIllinois, Urbana, Ill. 61801. An equal opportunityemiploYer.

VERTEBRATE PHYSIOLOGISTPosition available September 1973 to teachanimal and human physiology, occasionally bio-chemistry. Ph.D. and strong biochemical back-ground required. Commitment to undergraduateeducation essential; evidence of excellence inteaching desirable; research encouraged. Rank ofAssistant Professor; salary competitive. Submitcurriculum vitae and three letters of referencebefore 25 May to Dr. William H. Gotwald, Jr.,Coordinator, Department of Biology, UticaCollege of Syracuse University, Utica, NewYork 13502. An Equal Opportunity and Affirma-tive Action Employer.

jfl*lfllG GRADUATESTUDY * 1PREDOCTORAL ASSISTANTSHIPS

IN PHYSIOLOGYExcellent opportunities for graduate students lead-ing to the Ph.D. Stipends and free tuition. Trainingand research in cardiovascular, cellular, endocrine,gastrointestinal, energy metabolism, neurophysiol-ogy, respiration and transport physiology. Writefor details to Head, Department of Phsiology,School of Basic Medical Sciences, Univerdty ofIllinois at the Medical Center, P.O. Box 6998,Chicago, Illiois 60680.

WlliiillliiillliiIiIi LOWSEIP |||||1iiiiiliiiPOSTDOCTORAL FELLOWSHIP PROGRAM

CLINICAL AND LABORATORYIMMUNOLOGY

RUSH MEDICAL COLLEGEThe Department of Immunology of Rush

Medical College is offering 1- and 2-yearfellowships to individuals interested in clinicaland laboratory immunology and research in therole of the immune response in inflammationand certain diseases.Problems currently under investigation include

developmental, clinical, and experimental biologyof the complement and kinin systems; humoraland cellular responses in the acute phase ofinflammation; immunological injury in nephritis,hepatitis, chronic infections, and rheumatoidand collagen diseases; and transplantation andcancer immunology.For further information write the Chairman,

Department of Immunology, Rush Medical Col-lege, 1753 West Congress Parkway, Chicago,Illinois 60612.

||i|||||||||||||MARKET PLACE |||||||||||||A FIELD GUIDE TO THE BIRDS

OF MEXICOBy Ernest P. Edwards. Color illustrations of450 birds not found in the U.S.A. Details ofplumage, habits, distribution and habitat of allof Mexico's birds. Also Spanish description ofeach bird. 300 pages, waterproof paper cover$8.50. Order from Ernest Edwards, Box AQ,Sweet Briar, Va. 24595.

SCIENCE, VOL. 180

VICE PRESIDENTResearch & Development

American Hospital Supply Corpora-tion, one of the world's largest pro-viders of medical products to thehealth care industry, has an out-standing, top-level opportunity atMcGaw Laboratories, one of the mostrapidly expanding international, multi-plant divisions, producing intra-venous solutions, medical devices andother products for the world hospitalmarket. You are invited to inquireabout this executive position if youare a Ph.D. in one of the chemicalor biological sciences or engineering.

Responsibilities include directing re-search and development of intra-venous drugs, their containers anddevices, for their administration tothe patient. An understanding ofplastics and their bio-compatibility,parts design and manufacturingprocesses would be helpful.If you are interested in leading anaggressive and innovative groupcharged with creating new andmeaningful products with a recog-nized leader in this field, write tome. Successful performance will leadto a Divisional Vice Presidency. Pro-motion of our current Vice Presidentof Research and Development makesthis position available shortly. Sendconfidential resume to Director ofPersonnel.

McGAW LABORATORIES1015 Grandview Ave.Glendale, Ca. 91201

An equal opportunity employerm/f

118IRINIIIMII MU--IIID-_ ___ ____ -wllll mumu il|iniiiiinguniumlni _ __ _ _ _ _ eImas"In ~ IUM1111mmnt

0

We want to be useful ...and even interesting

Film to please and film to differentiate

A swatch of inks as rendered by Kodak color slidefilms that maximize consumer satisfaction with thegreenness of grass, the blueness of sky, and the healthyglow of complexions.

6S-f .S .il ' ;

The same swatch photographed on the new KODAKPhotomicrography Color Film 2483,* our first de-signed not for mere pleasure but for accentuating theability of biological stains to differentiate structuresvisually indistinguishable without artifice. Note on theneutral step tablet the fewer greys between black andwhite. In photography for pleasure this high gradientwould make most pictures harsh; in photography toinform and teach, this high contrast, along with the100-line/mm resolving power for 1.6:1 test-objectcontrast-remarkable resolution for a color film-bringsout detail more conspicuously than do our other films.No unusual processing is required. KODAK Process E-4

is easily run in any darkroom and routine with commerciallabs. The film comes in 36-exposure 135 magazines, 35mmx 125-foot rolls, and 4 x 5-inch sheets in packages of 25.Many dealers in professional photographic supplies stockit. An inquiry to Kodak, Dept. 916, Rochester, N.Y. 14650will bring help if needed in locating one.

*If the package happens to be labeled "SO-456," please forgive us.It's the same product.

4 Right and wrongH. W. Rickett of the New York Botanical Garden, author ofthe monumental and magnificent multi-volume Wild Flowersof the United States, made these two exposures of Eupatori-um coelestinum on Kodachrome-X film.What is right and what is wrong in color reproduction is

intimately bound up not only with what goes on in the indi-vidual human head but with the physical conditions of view-ing the original and the reproduction. Between a projectedimage in a darkened room and a piece of paper or plastic inthe hand or on the wall the objective differences seem almosttoo much for subjective comparison. But not really. Kodakscientists have spent whole careers in putting subjective colorphenomena on an objective basis. Their work, though pub-lished, is little known to many who might find it useful. Tofollow it calls for a bit of mental concentration by a newcom-er to this field, but the human intellect is known to be ca-pable of leaping higher hurdles.

With this warning, we would be pleasedto send a reprint of a paper entitled "Ob-jectives in Color Reproduction," by R. W.G. Hunt of the Research Laboratories ofKodak Limited in Harrow, England. Ad-dress request to Dept. 55W, Kodak, Roch-ester, N.Y. 14650. Colorful

3>MZ>.

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