boston, croscopists...electronic integrator specifically designed for l/c. checkthe number below on...

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1 e -0 Arachidonic acid [1-14C] 40-6OmCi/mmol Toluene: methanol, 9:1, in dry ice in Combi-vial NEC-661 $94/1 0,uCi $1 93/50,Ci Arachidonic acid [5,6,8,9,11,12,14,15-3H(N)] 60-1 OOCi/mmol Hexane solution in amber sealed ampoule NET-298 $1 28/250,Ci $378/i mCi 8,11,14-Eicosatrienoic acid [1-14C] 40-60mCi/mmol Hexane solution in Combi-vial NEC-632 $11 0/50,Ci $328/250,uCi 8,11 ,14-Eicosatrienoic acid [3-3H(N)] 1 5-300i/mmol Hexane solution in Combi-vial NET-459 $1 46/250,uCi $420/i mCi NEN's labeled Prostaglandins include PGAi, PGA2, PGBi, PGEi, PGE2, PGFia, and PGF2a. Write for our new Lipids and Prostaglandins Brochure. 11 New England Nuclear 549 Albany Street, Boston, Massachusetts 02118 Customer Service 617-482-9595 NEN Canada Ltd., Dorval, Quebec; NEN Chemicals GmbH, Dreieichenhain, W. Germany. Circle No. 427 on Readers' Service Card 3 JUNE 1975 MI CROSCOPISTS MODERN,IZE SPECIMEN PREPARATION UTILIZE LATEST TECHNIQUES: Freeze etching - see both sides of fracture Sputtering- high vacuum degas, then deposit Critical point drying - distortion free Ion beam - remove surface (atomic) layers Freeze drying - sublime water, dry without distortion rilting omni rotary - incident angle varies continuously World wide sales and service. DENTON VACUUM, INC. Cherry Hill Industrial Center Cherry Hill, N.J. 08003 (609) 424-1012 Circle No. 515 on Readers' Service Card DV-502 High Vacuum Evaporator .

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Page 1: Boston, CROSCOPISTS...electronic integrator specifically designed for L/C. Checkthe number below on your reader service card for a current ISCOcatalog. If you're in a hurry, write

1e -0

Arachidonic acid [1-14C] 40-6OmCi/mmolToluene: methanol, 9:1, in dry ice in Combi-vialNEC-661 $94/1 0,uCi $1 93/50,CiArachidonic acid [5,6,8,9,11,12,14,15-3H(N)]60-1OOCi/mmol Hexane solution in amber sealedampouleNET-298 $1 28/250,Ci $378/i mCi8,11,14-Eicosatrienoic acid [1-14C] 40-60mCi/mmolHexane solution in Combi-vialNEC-632 $11 0/50,Ci $328/250,uCi8,11 ,14-Eicosatrienoic acid [3-3H(N)] 1 5-300i/mmolHexane solution in Combi-vialNET-459 $1 46/250,uCi $420/i mCiNEN's labeled Prostaglandins includePGAi, PGA2, PGBi, PGEi, PGE2, PGFia, and PGF2a.Write for our new Lipids and Prostaglandins Brochure.

11New England Nuclear549 Albany Street, Boston, Massachusetts 02118Customer Service 617-482-9595

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

Circle No. 427 on Readers' Service Card

3 JUNE 1975

MICROSCOPISTSMODERN,IZE

SPECIMEN PREPARATION

UTILIZE LATEST TECHNIQUES:Freeze etching - see both sides of fractureSputtering- high vacuum degas, then

depositCritical point drying - distortion freeIon beam - remove surface (atomic)

layersFreeze drying - sublime water, dry

without distortionrilting omni rotary - incident angle

varies continuously

World wide sales and service.

DENTON VACUUM, INC.Cherry Hill Industrial Center

Cherry Hill, N.J. 08003 (609) 424-1012

Circle No. 515 on Readers' Service Card

DV-502High VacuumEvaporator

.

Page 2: Boston, CROSCOPISTS...electronic integrator specifically designed for L/C. Checkthe number below on your reader service card for a current ISCOcatalog. If you're in a hurry, write

Proteinase K isAvailable only fromEM Laboratories, nc.

4F

Proteinase K is useful in RNA, DNA isolationand for serological purposes.Proteinase K is chromatqgraphically purified,and lyophilized. Also available as a carrier-bound enzyme.Send for literature, specifications, applica-tions and Drices.

Circle No. 356 on Readers' Service Card

Density GradientChemicals forCentrifugation

SuprapurTM chemicals with assayed purity lev-els. Ideal for UV monitoring, separation andelectrophoresis. Free from RNase and DNaseactivity.

Cesium acetateCesium bromideCesium chlorideCesium formate

Circle No. 357 on

Cesium sulfateRubidium bromideRubidium chlorideSucrose

Readers' Service Card

EM Reagents!

EM Laboratories, Inc.associate of E. Merck, Darmstadt, Germany511o) Executive Boulevard, Elmsford. New York 10523Telephone 914/592-4550

BOOK REVIEWS

(Continuedfrom page 1202)

vier, New York, 1974. xxiv, 450 pp., illus.$42.50. Frontiers of Biology, vol. 38.The Geometry of the Stars. James P. Calk.

Exposition, Hicksville, N.Y., 1975. 104 pp.,illus. $5. An Exposition-Banner Book.Growth and Morphometry of the Carcass, Se-

lected Bones, Organs, and Glands of Mule Deer.Allen E. Anderson, Dean E. Medin, and DavidC. Bowden. The Wildlife Society, Washington,D.C., 1974. 122 pp., illus. Paper, $2.10. WildlifeMonographs, No. 39.

Grzimek's Animal Life Encyclopedia. Bern-hard Grzimek, Ed. Vol. 1, Lower Animals.Irenaus Eibl-Eibesfeldt and six others, Eds.Translated from the German edition (Zurich,1970). Van Nostrand Reinhold, New York,1974. 600 pp., illus. $29.95; the 13-volume set,$325.A Handbook on Drug and Alcohol Abuse. The

Biomedical Aspects. Frederick G. Hofmann incollaboration with Adele D. Hofmann. OxfordUniversity Press, New York, 1975. xvi, 330 pp.Cloth, $10.95; paper, $6.95.Human Engineering. The Body Re-examined.

John Lenihan. Braziller, New York, 1975. viii,212 pp., illus. $7.95.The Impact of Energy Development on Water

Resources in Arid Lands. Literature Review andAnnotated Bibliography. Charles Bowden. Uni-versity of Arizona Office of Arid Lands Studies,Tucson, 1975. viii, 278 pp. Spiral bound, $10.Arid Lands Resource Information Paper No. 6.An Introduction to Attribution Processes.

Kelly G. Shaver. Winthrop, Cambridge, Mass.,1975. vi, 154 pp., illus. Cloth, $5.95; paper,$3.95.

Isozymes. Vol. 1, Molecular Structure. Papersfrom a conference, New Haven, Conn., Apr.1974. Clement L. Markert, Ed. Academic Press,New York, 1975. xx, 856 pp., illus. $33.

Last of the Naturalists. The Career of C. HartMerriam. Keir B. Sterling. Arno (New YorkTimes), New York, 1974. xvi, 482 pp. + plates.$23. Natural Sciences in America.

Lecture Outline of Preventive VeterinaryMedicine for Animal Science Students. I. A.Schipper. Burgess, Minneapolis, ed. 5, 1975. vi,314 pp., illus. Paper, $9.95.

Liquid Crystals and Plastic Crystals. Vol. 1,Physico-Chemical Properties and Methods ofInvestigation. G. W. Gray and P. A. Winsor,Eds. Horwood, Chichester, England, and Hal-sted (Wiley), New York, 1974. xiv, 384 pp., illus.$32.50. Ellis Horwood Series in Physical Chem-istry.Magnetic Resonance in Chemistry and Biol-

ogy. Papers from a summer school, Basko Polje,Yugoslavia, June 1971. Janko N. Herak andKresimir J. Adamic, Eds. Dekker, New York,1975. xvi, 552 pp., illus. $34.50.Man and His Environment. Policy and Ad-

ministration. Lynton K. Caldwell. Harper andRow, New York, 1975. xvi, 172 pp. Cloth, $9.95;paper, $3.95. Man and His Environment Series.

Mathematical Theory of Dislocations andFracture. R. W. Lardner. University of TorontoPress, Toronto, 1974. xii, 364 pp., illus. $20.Mathematical Expositions No. 17.The Medical Assistant. An Intermediate

Level of Health Care Personnel. Proceedings ofa conference, Bethesda, Md., June 1973. DonaldM. Pitcairn and Daniel Flahault, Eds. WorldHealth Organization, Geneva, 1974 (availablefrom Q Corp., Albany, N.Y.). 172 pp. Paper, $5.Public Health Papers No. 60.

Mental Health and Going to School. TheWoodlawn Program of Assessment, Early In-

ThefHris WLde mlusRitrotomecrvosstat...

Temperaturesropm-150C to -501C...Frozen Sectionsfrom 40o euto 2a.The Harris LoTemp model WROis two microtome-cryostats inone. A single unit that can doboth routine diagnostic pro-cedures and such sophisticatedresearch procedures as thinsection light microscopy, auto-radiography, fluorescence mi-croscopy and other histologicalprocedures, at a cost compar-able to presently availableroutine cryostats.The Harris model WRC is

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Circle No. 482 on Readers' Service Card1230

Page 3: Boston, CROSCOPISTS...electronic integrator specifically designed for L/C. Checkthe number below on your reader service card for a current ISCOcatalog. If you're in a hurry, write

tervention, and Evaluation. Sheppard G. Kel-lam, Jeannette D. Branch, Khazan C. Agrawal,and Margaret E. Ensminger. University of Chi-cago Press, Chicago, 1975. xvi, 214 pp., illus.$11.Methods in Enzymology. Sidney P. Colowick

and Nathan 0. Kaplan, Eds. Vol. 35, Lipids.Part B. John M. Lowenstein, Ed. AcademicPress, New York, 1975. xviii, 654 pp., illus.$34.50.

Microbiology. Vol. 1. V. A. Shorin and L. S.Smirnova, Eds. Translated from the Russianedition (Moscow, 1972). Hall, Boston, 1975. viii,154 pp., illus. $21. Itogi Summaries of ScientificProgress. Biology Series.Models for the Analysis and Planning of Ur-

ban Systems. Alan Walter Steiss. LexingtonBooks (Heath), Lexington, Mass., 1975. xii, 354pp., illus. $19.50.

National Materials Policy. Proceedings of ameeting, Washington, D.C., Oct. 1973. NationalAcademy of Sciences, Washington, D.C., 1975.viii, 216 pp., illus. Paper, $8.25.A New Dictionary of Physics. H. J. Gray and

Alan Isaacs, Eds. Longman, New York, ed. 2,1975. iv, 620 pp., illus. $35.Oceanology. Vol. 1. A. P. Kapitsa, P. S.

Lineykin, and K. S. Losev, Eds. Translated fromthe Russian edition (Moscow, 1971). Hall, Bos-ton, 1975. viii, 128 pp., illus. $19. Itogi Sum-maries of Scientific Progress. Geophysics Series.

Optical Resonance and Two-Level Atoms. L.Allen and J. H. Eberly. Wiley-Interscience, NewYork, 1975. xvi, 234 pp., illus. $19.95. Inter-science Monographs and Texts in Physics andAstronomy, vol. 28.

Organotransition-Metal Chemistry. Proceed-ings of a seminar, Honolulu, May 1974. YoshioIshii and Minoru Tsutsui, Eds. Plenum, NewYork, 1975. xiv, 398 pp., illus. $37.50.

Plant Propagation. Principles and Practices.Hudson T. Hartmann and Dale E. Kester. Pren-tice-Hall, Englewood Cliffs, N.J., ed. 3, 1975. x,662 pp., illus. $17.25.

Platelets, Thrombosis, and Inhibitors. Pro-ceedings of a seminar, Honolulu, Dec. 1973.Paul Didisheim, Takio Shimamoto, and HirohYamazaki, Eds. Schattauer, Stuttgart, 1974.xvi, 522 pp., illus. Paper, DM 128.

Polarization Nuclear Physics. Proceedings ofa meeting, Ebermannstadt, Germany, Oct. 1973.D. Fick, Ed. Springer-Verlag, New York, 1974.x, 294 pp., illus. Paper, $9.90. Lecture Notes inPhysics, vol. 30.

Pollen. Biology, Biochemistry, Management.R. G. Stanley and H. F. Linskens. Springer-Ver-ag, New York, 1974. x, 308 pp., illus. $24.60.Precis de Botanique. 1, Protocaryotes et

rhallophytes Eucaryotes. R. Gorenflot. Doin,3aris, 1975. 184 pp., illus. Paper, 98 F.Predicting Adult Stature for Individuals. A. F.

toche, H. Wainer, and D. Thissen. Karger, Ba-el, 1975. viii, 114 pp. Paper, $20. Monographsn Paediatrics, vol. 3.Present Problems in Haematology. Proceed-

ngs of a meeting, Prague, Aug. 1973. J.,ibdnsk9 and L. Donner, Eds. Excerpta Med--a, Amsterdam, and Avicenum, Prague, 1974U.S. distributor, Elsevier, New York). xii, 302p., illus. $34.25.Principles of Pathobiology. Mariano F. La

'ia and Rolla B. Hill, Jr., Eds. Oxford Univer-ity Press, New York, ed. 2, 1975. xviii, 296 pp.,lus. Cloth, $11.95; paper, $7.95.Principles of Psychotherapy. Irving B. Wei-

er. Wiley-lnterscience, New York, 1975. xvi,32 pp. $15.95. Wiley Series on Personalityrocesses.Progress in Biophysics and Molecular Biol-

gy. Vol. 28. J. A. V. Butler and D. Noble, Eds.

D JUNE 1975

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Page 4: Boston, CROSCOPISTS...electronic integrator specifically designed for L/C. Checkthe number below on your reader service card for a current ISCOcatalog. If you're in a hurry, write

N.EVW C*TALOGFROM ISCO

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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.

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Circle No. 561 on Readers' Service Card1232

Pergamon, New York, 1974. vi, 434 pp. +plates. $50.

Progress In Medical Virology. Vol. 19. JosephL. Melnick, Ed. Karger, Basel, 1975. xviii, 382pp., illus. $67.25.

Prophylaxis of Infectious and Other Diseases.Papers from a symposium, Berne, Nov. 1973. T.M. Inderbitzin, Ed. Karger, Basel, 1975. vi, 272pp., illus. $34. Monographs in Allergy, vol. 9.

Psychology in Progress. Readings from Scien-tific American. Richard C. Atkinson, Ed. Studyguides by John P. J. Pinel. Freeman, San Fran-cisco, 1975. x, 392 pp., illus. Cloth, $12; paper,$6.25.

Psychotherapy and Multiple Personality. Se-lected Essays. Morton Prince. Nathan G. Hale,Jr., Ed. Harvard University Press, Cambridge,Mass., 1975. viii, 328 pp., illus. $12.50.Radio Astronomy. F. Graham Smith. Pen-

guin, Baltimore, ed. 4, 1975. 270 pp. + plates.Paper, $3.50.

Reading for Working. A Functional LiteracyAnthology. Thomas G. Sticht, Ed. Human Re-sources Research Organization, Alexandria,Va., 1975. x, 186 pp., illus. Paper, $5.95.

Regulation of Hepatic Metabolism. Proceed-ings of a symposium, Copenhagen, May 1973.Frank Lundquist and Niels Tygstrup, Eds.Munksgaard, Copenhagen, and AcademicPress, New York, 1974. 828 pp., illus. $47.50.A Revision of the Subfamily Coelidiinae

(Homoptera:Clcadellidae). Tribes Tinobreg-mini, Sandersellini and Tharrini. Mervin Wil-liam Nielson. The British Museum (NaturalHistory), London, 1975. 198 pp., illus. Paper,£12.20. Bulletin of the British Museum (Natu-ral History), Entomology, Supplement 24.Scanning Electron Microscopy in Biology. A

Students' Atlas on Biological Organization. R.G. Kessel and C. Y. Shih. Springer-Verlag, NewYork, 1974. xii, 346 pp., illus. $19.

Science and Technology in the Arts. A Tourthrough the Realm of Science/Art. StewartKranz. Margaret Holton and Elizabeth S. Fow-ler, Jr., Eds. Designed by Lorraine Hohman,Myron S. Hall III, and Jean King. Van Nos-trand Reinhold, New York, 1974. 336 pp. $40.

Scientific Strategies in Human Affairs. ToTell the Truth. Irwin D. J. Bross. Exposition,Hicksville, N.Y., 1975. viii, 174 pp. $6.50. AnExposition-University Book.Sexual Signatures. On Being a Man or a

Woman. John Money and Patricia Tucker.Little, Brown, Boston, 1975. vi, 250 pp., illus.$6.95.Slow Sand Filtration. L. Huisman and W. E.

Wood. World Health Organization, Geneva,1974 (available from Q Corp., Albany, N.Y.).122 pp., illus. Paper, $7.40.Sonar and Underwater Sound. Albert W. Cox.

Lexington Books (Heath), Lexington, Mass.,1975. xx, 146 pp., illus. $13.

Stability Theory and the Existence of PeriodicSolutions and Almost Periodic Solutions. T.Yoshizawa. Springer-Verlag, New York, 1975.viii, 234 pp. Paper, $9.50. Applied Mathemati-cal Sciences, vol. 14.

Stellarators. D. V. Skobel'tsyn, Ed. Trans-lated from the Russian edition (Moscow, 1973)by Dave Parsons. Consultants Bureau (Plenum),New York, 1974. viii, 132 pp., illus. Paper,$32.50. The Lebedev Physics Institute Series,vol. 65.

Strategy for Tomorrow. Andre Beaufre.Translated from the French edition (Paris,1972). Crane, Russak, New York, 1974. xii, 92pp. $7.50.

Structure and Bonding. Vol. 19. J. D. Dunitzand seven others, Eds. Springer-Verlag, NewYork, 1974. iv, 170 pp., illus. $26.30.

Studies in Optimization. G. B. Dantzig and B.C. Eaves, Eds. Mathematical Association ofAmerica, Washington, D.C., 1974. x, 180 pp.,illus. $10. Studies in Mathematics, vol. 10.The Superficial Veins of the Human Brain.

Veins of the Brain Stem and of the Base of theBrain. Henri M. Duvernoy. Springer-Verlag,New York, 1975. viii, 1 10 pp., illus. $36.10.

Switching Circuits for Engineers. Mitchell P.Marcus. Prentice-Hall, Englewood Cliffs, N.J.,ed. 3, 1975. xvi, 300 pp., illus. $15. Prentice-HallElectrical Engineering Series.

Synthetic Fibrinolytic Thrombolytic Agents.Chemical, Biochemical, Pharmacological andClinical Aspects. Proceedings of a symposium,Paris, Sept. 1972. K. N. von Kaulla and J. F.Davidson, Eds. Thomas, Springfield, Ill., 1975.xvi, 490 pp., illus. $34.50.Temperature Regulation and Drug Action.

Proceedinjs of a symposium, Paris, Apr. 1974.P. Lomax, E. SchOnbaum, and J. Jacob, Eds.Karger, Basel, 1975. xxii, 406 pp., illus. $60.Thermal Vibrations in Crystallography. B. T.

M. Willis and A. W. Pryor. Cambridge Univer-sity Press, New York, 1975. xvi, 280 pp., illus.$27.50.

Tissue Culture and Plant Science 1974. Pro-ceedings of a congress, Leicester, England, July1974. H. E. Street, Ed. Academic Press, NewYork, 1975. xii, 502 pp illus. $19.75.Toward the Future. 'ierre Teilhard de Char-

din. Translated,Irom the French edition (Paris,1973) by Rend Hague. Harcourt Brace Jovano-vich, New York, 1975. 224 pp. $6.95. A Helenand Kurt Wolff Book.

Treatise on Solid State Chemistry. Vol. 2, De-fects in Solids. N. B. Hannay, Ed. Plenum, NewYork, 1975. xiv, 528 pp., illus. $35.

Tritium and Its Compounds. E. AnthonyEvans. Halsted (Wiley), New York, 1975. xvi,822 pp., illus. $55.Unready Kilowatts. The High-Tension Poli-

tics of Ecology. Gary Farmer. Open Court, LaSalle, Ill., 1975. vi, 356 pp. $11.95.

Vagotomy. Latest Advances with Special Ref-erence to Gastric and Duodenal Ulcers Disease.F. Holle and S. Andersson, Eds. Springer-Ver-lag, New York, 1974. xii, 244 pp., illus. Paper,$34.50.

Valvular Heart Disease. Edmund H. Son-nonblick and Michael Lesch, Eds. Grune andStratton, New York, 1975. xii, 400 pp., illus.$24.75. Progress in Cardiovascular Diseases.The Volunteer Subject. Robert Rosenthal and

Ralph L. Rosnow. Wiley-Interscience, NewYork, 1975. xiv, 266 pp., illus. $14.95. Wiley Se-ries on Personality Processes.WATFIV. Fortran Programming with the

WATFIV Compiler. John B. Moore. RestonPublishing Co. (Prentice-Hall), Reston, Va..1975. xvi, 492 pp., illus. Paper, $8.50.The Wild Canids. Their Systematics, Behav-

ioral Ecology and Evolution. M. W. Fox, EdVan Nostrand Reinhold, New York, 1975. xviii508 pp., illus. $19.95. Behavioral Science Series.World Review of Nutrition and Dietetics. Vol

21. Geoffrey H. Bourne, Ed. Karger, Basel1975. x, 328 pp., illus. $76.Why Information Systems Fail. Henry C

Lucas, Jr. Columbia University Press, Ne%York, 1975. xii, 130 pp. $11.Wonders of Creation. Meguer V. Kalfaian

Vantage Press, New York, 1974. viii, 88 ppillus. $4.95.

Zoologie et Assistance Technique. Proceedings of a conference, Liege, Belgium, May 197TJean-Claude Ruwet, Ed. Fondation dl'Universitd de Lifge pour les Recherches Sciertifiques en Afrique Centrale, Liege, 1974. 38pp., illus. Paper, 600 BF.

SCIENCE, VOL. 18

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L

POSITIONS WANTED

Applied Statistician. Ph.D. Postdoctorate in universityconsulting center. Teaching experience. Background incomputers. Desire position in statistical applications.Box 266, SCIENCE. X

Chemist-Epidemiologist. Ph.D. (physical chemistry).M.P.H. (epidemiology and health planning); extensiveexperience in university teaching, research, and admin-istration. Interdisciplinary interests. Seeks senior-level,challenging position conducive to accomplishment.Box 267, SCIENCE. X

Freelance Writer-Editor. Life sciences; psychology, bi-ology, physiology. Graduate McGill University. Box268, SCIENCE. 6/20, 27

Instructor, Biology B.A., M.A. Nine years of teachingexperience: anatomy, physiology, chemistry, micro-biology in 1000-bed hospital diploma nursing school;seeks position in related teaching field. Willing to relo--ate. Box 269, SCIENCE. X

W4anager, Pharmaceutical Analysis. Ph.D. (analytical:hemistry), with 8 years of experience in laboratory su-ervision for pharmaceuticals and chemical products.solid background in QC, product development, and-DA/GMP regulations. This innovative scientist seeks-hallenging position in technical management. Box!70, SCIENCE. X

'hysiologist/Histochemist. M.S. 1974. Experience inight and electron microscopy techniques, 3 years ofnedical lab and teaching experience, publications. De-ires university or industrial position. Location open.tvailable August 1975. Box 271, SCIENCE. 6/20, 27

'oxicologist. Ph.D. 1971. Three years of NIH post-octoral training. Publications. Pesticide and drug me-ibolism. Enzyme induction and developmental tox--ology. Seeks academic, industry, or governmental po-tion. Available July 1975. Box 272, SCIENCE.

6/20, 27

0 JUNE 1975

PersonnelPlacement

Only those employers who will not discriminateon the basis of race, sex, religion, age, color, or na-tional origin should submit Personnel Placementadvertising.POSITIONS WANTED: 40t per word; use of Box

Number counts as 10 additional words. Minimumcharge $10. Prepayment required. This rate appliesto individuals only; personnel agencies and com-panies take display rate for all advertising.

DISPLAY (POSITIONS OPEN, MARKET PLACE,AND SO FORTH): $1 10 per inch, minimum (1 inch isequivalent to 12 lines of 48 characters each). Adsover 1 inch billed to nearest quarter inch. No chargefor Box Number. Rates net. No agency commissionallowed for ads under 4 inches. No cash discount.Prepayment required for foreign advertising. Pur-chase orders and billing information must accom-pany all other advertising.

COPY for ads must reach SCIENCE by Wednesday,3-1/2 weeks before issue date (Friday of each week)requested. Send copy for all positions wanted adsand display ads under 5 inches to:

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Washington, D.C. 20005Send copy for display ads, 1/6 page and larger, to:

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

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1515 Massachusetts Ave., NWWashington, D.C. 20005

A position is available at the Associate Professor rankin the Division of Allergy/Immunology, Departmentof Pediatrics, State University of New York at Buffalo.The position is open to individuals with the followingqualifications. (i) M.D. degree. (ii) Board certificationin Pediatrics and in Allergy/Immunology. (iii) Re-search capabilities in laboratory immunology, in addi-tion to the ability to supervise laboratory proceduresfor the evaluation of humoral and cellular immuno-logic competence, polymorphonuclear leukocyte func-tion and the complement system. (iv) Able to assumeclinical and teaching responsibilities. Apply to Chair-man, Department of Pediatrics, Children's Hospital,219 Bryant Street, Buffalo, N.Y. 14222. Telephone:716-878-7258. An Equal Opportunity/Affirmative Ac-tion Employer.

ASSISTANT PROFESSOR OF BOTANY. Ph.D. re-quired. To teach undergraduate and graduate ecologycourses. To develop a research program in plant com-munity ecology. Twelve-month appointment. Sendresume, academic record, publications, three letters ofrecommendation, and a brief description of area of re-search interest and background in plant communityecology to: Dr. Roger C. Fites, Chairman of SearchCommittee, Department of Botany, North CarolinaState University, Raleigh, N.C. 27607. An Equal Op-portunity/Affirmative Action Employer.

ASSISTANT PROFESSOR OFMEDICINAL CHEMISTRY

Position available fall 1975. Ph.D. required. Re-search interest in enzyme inhibition, biotransforma-tions related to drugs (qualitative aspects), or immuno-chemistry is preferred but other areas may be consid-ered. Send r6sum6 and three letters of reference by IJuly 1975 to: Dr. A. J. Solo, Department of MedicinalChemistry, School of Pharmacy, State University ofNew York at Buffalo, Buffalo, New York 14214.The State University of New York at Buffalo is an

Equal Opportunity/Affirmative Action Employer. Ap-plications from women and members of minoritygroups are encouraged.

The Department of Anatomy and Physiology, IndianaUniversity, Bloomington, invites applications for AS-SISTANT PROFESSOR OF PHYSIOLOGY, effec-tive January 1976. Preference will be given to can-didates specializing in environmental physiology, neu-rophysiology, or endocrinology. The appointee will beexpected to develop a quality research program andparticipate in undergraduate and graduate teaching.Submit curriculum vitae and the names of three refer-ences to Dr. Roderick Suthers, Department of Anatomyand Physiology, Indiana University, Bloomington, In-diana 47401. An Equal Opportunity, Affirmative Ac-tion Employer.

BOTANIST/DEVELOPMENTAL BIOLOGISTSmall state liberal arts college in the Berkshires offer-ing degrees in biology and medical technology seeksPh.D. in botany. This person should have a broad Bot-any background as well as knowledge of animal devel-opment. Teaching responsibilities include courses inbotany and developmental biology. Assistant profes-sor. Please send resume to: Dr. Duncan MacKenzie,Chairman, Biology Department, North Adams StateCollege, No. Adams, Mass. 01247. Affirmative ActionlEqual Opportunity Employer.

i

Search Committee ChairmanBanting and Best Department of Medical Research

University of Toronto112 College Street

Toronto, Ontario, M5G IL6Canada

1233

POSITIONS OPEN

ANIMAL BREEDING-STATISTICS POSITIONTeaching with some research, title: Assistant Professorof Animal Sciences and Assistant Professor of Agricul-ture (Statistics), Washington State University (anEqual Opportunity/Affirmative Action Employer).Those desiring to apply for this position should sendcomplete r6sume by I July 1975 to: Dr. R. L. Preston,Chairman, Department of Animal Sciences, Washing-ton State University, Pullman, Washington 99163.

AQUATIC ECOLOGISTAppointment available at Rosenstiel School of Ma-

rine and Atmospheric Science, University of Miami,for an aquatic ecologist interested in quantitative popu-lation or community ecology with particular interest infood chain dynamics and community structure. Re-sponsibilities will include teaching and the designingand coordination of field research. Level of appoint-ment would be commensurate with qualifications. In-quiries should be submitted to:

Chairman-Ecologist Search CommitteeDivision of Biology and Living Resources

Rosenstiel School of Marine and Atmospheric ScienceUniversity of Miami

4600 Rickenbacker CausewayMiami, Florida 33149

POSITIONS OPEN

ASSISTANT PROFESSOR-STATISTICSFaculty position for 1-year appointment, 20 August1975 to 20 May 1976. Permanent position anticipatedafter that, but will be filled only after open competitionat that time. Teaching, 9 to 10 hours, primarily in ju-nior-level service courses, plus consulting and dataanalysis. Ph.D. in statistics (or assurance of completionthis year) required. Applications by 15 July to: Chair-man, Department of Statistics, Colorado State Univer-sity, Fort Collins, Colorado 80523.

ASSOCIATE CHIEF OF STAFFFOR EDUCATION

The applicant should be an M.D. with expertise incontinuing medical education as well as in a clinicalarea. The primary responsibility of the holder of thispost is in continuing medical education. In addition,the position includes an academic appointment in theSchool of Medicine of the University of Pittsburgh anda staff appointment in the Veterans Hospital, both indepartment or departments appropriate to his or herclinical abilities. Knowledge and experience in the de-velopment, structuring, and evaluation of continuingeducation activities in the health professions is essen-tial. The applicant must be able to contribute in his orher field of medical expertise in the University and theVeterans Administration Hospital. The person willwork in cooperation with an existing Division of Con-tinuing Education at the University of PittsburghSchool of Medicine and the University Health Centerof Pittsburgh. Send curriculum vitae and names ofthree references to Chairman of Search Committee forACOSE, c/o Chief of Staff, VA Hospital, UniversityDrive, Pittsburgh, Pa. 15240. An Equal OpportunitylAffirmative Action Employer.

ASSOCIATE EXECUTIVE DIRECTORThe Assembly of Life Sciences of the National

Academy of Sciences, National Research Council, isseeking an Associate Executive Director to assist theExecutive Director in the management of a complexorganization concerned with fundamental scientificquestions, the vitality of the national scientific en-deavor, and broad national problems in the biologic,medical, environmental, and toxicologic fields.

Candidates should be professionals from the fields ofscience, preferably having experience in the administra-tive management of a scientific research program. Sub-stantial leadership experience in academic, govern-ment, health care, or industrial organizations is re-quired. Familiarity with negotiations with governmentagencies involving contracts and grants is desirable.

Inquiries should be addressed to Dr. Thomas J. Ken-nedy, Jr., Executive Director, Assembly of Life Sci-ences, National Academy of Sciences, 2101 Constitu-tion Avenue, NW, Washington, D.C. 20418.

An Equal Opportunity Employer

AUDITORY RESEARCHNeurophysiologist. Immediate opening at Assistant

Professor level for recent Ph.D. with postdoctoral ex-perience and strong background in neurophysiology ofthe auditory system. Single unit research emphasized.Primary commitment to research, with minimal teach-ing responsibilities. Salary to $16,500 per annum plusfringe benefits.

Postdoctoral Research Associate. Immediate open-ing in Otologic Ultrastructure Laboratory for recentPh.D. with strong background in electron microscopy.Specific research concerned with inner ear morphol-ogy. Salary to $12,500 per annum plus fringe benefits.Send curriculum vitae with names of three references

to: Search Committee, Department of Otolaryngology,2630 University Avenue S.E., Minneapolis, Minnesota55414.

BANTING AND BESTDEPARTMENT OF MEDICAL RESEARCH

UNIVERSITY OF TORONTOApplications and nominations are invited for a fac-

ulty position to start on or about I January 1976. Mo-lecular endocrinology or animal cell differentiation arethe preferred areas of research. Minimum of 2 years ofpostdoctoral experience required. Salary negotiableand commensurate with rank. Interested personsshould send curriculum vitae. Also arrange to havethree letters of recommendation sent to:

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POSITIONS OPEN

BIOLOGY FACtULTY' position starting I September1975 to teach human anatomy and physiologs, genet-ics, and introductory biology. The candidate with addi-tional competence and dgsire may have an opportunityat various times to teach in the following areas: bio-chemistry, physics, marine science, and methods andsupervision of secondars sciencc teaching. Therecipient is expected to participatc activelv in advising,in departmental and collegiate governance, in specialcollege programs, for examplc, U.W.W., and in in-structional-support roles. Qualitications: Ph.D., teach-ing experience preferred. OnIs completed written ap-plications including official transcript, curriculumvitae, and three letters of referencc or placement cre-dentials will be considered. Dcadlinc: July. Send toBiology Search Committee, Box 2072, Stephens Col-lege, Columbia, Missouri 65201. We encourage womenand members oJ minorit_ groups to contact uis as weare an . A./E.0. employer.

BIOILOGICAL RFSFEARCIHIOORDINATORApplications are invited for the professional position

of Biological Research Coordinator. Basic qualitica-tions for the position are a Ph.D. in the biological sci-ences and extensise field research expericnce in theArctic. Applicant should be familiar with the researchactisities in the biological and ecological sciences con-ducted in northern Alaska bs unisersities, statc andfederal agencies and industry, and should hasve person-als participated in or coordinated some of this re-search. preferabls of an interagency nature.

Duties will be to coordinate and monitor theprogress of the various biologicail projects of the OutcrContinental Shelf Energs Programi., conductcd bsBLM-NOAA in the Beaufort and Chukchi Seas. TheCoordinator will be responsible to the Project Managerof the OCS Arctic Project Office at the Unisersits ofAlaska, which operates under contract to NOAA.

Salars will be in the range ot $2200 to $25(0 permonth.

The Universitt is an Equal Opportuniti Emplo_er:women and members oJ ninoritt groups are encour-aged to appl/v

For further information, write to Project Manager,OCS Arctic Project Office, Geophvsical Institute, l'ni-sersitv of Alaska, Fairbanks. Alaska 99701.

BOTANY AND ZOOLOGYBotanist, Ph.D., with both field botany and molecu-

lar research interests. Must be capable of managingherbarium and teaching vascular and nonvascular bot-any and principles of biology.

Zoologist, Ph.D., with strong research background inphysiologs. Must be capable of teaching invertebratcand s%ertebrate biology and invertebrate and vertebratephysiology. Entomological or omithological interestsalso desirable.

Both positions involve undergraduate and master'steaching and research. Rank and salars dependentupon qualifications. Send curriculum sitae to BiologySearch Committee, California State C'ollege, Califor-nia, Pennsvlvania 15419, for September employment.An Equal OpportunitvlAffirmative,4-ltion Emp/loier.

CHEMISTR' FACUI TX position in a two-persondepartment to teach organic chemistrs and in-troductory inorganic chemistry. The candidatc with ad-ditional competence and desire may have an opportu-nity at sarious times to teach in the following areas:biochemistrs, phssics, marine science, and methodsand supersision of secondars science teaching. Therecipient is expected to participate activels in advising,in departmental and collegiate govcrnance, in specialcollege programs, for example, U.s.W., and in in-structional-support roles. Qualifications: Ph.D.; teach-ing experience preferred. OnIsU completed written ap-plications including oflicial transcript, curriculumvitae, and three letters of reference or placement cre-dentials will be considered. Deadline: July. Send toChemistry Search Committee, Box 2072, Stephens Col-lege, Columbia, Missouri 65201. We enourage womienand members oJ minoritv groups to contact us as weare an A.4 A. / 0 employver.

CLINICAL BIOLOGIST: One-sear appointment,with possible renewal, at the rank of assistant professorwith primary responsibilits for direction of ongoingMedial Technologs program, including interactionwith facults, hospitals, and students in the MedicalTechnology program and personal communicationwith and visitation to hospital medical microbiologs,serology, or related clinical science. Ph.D. required, re-search encouraged. Submit applications to Dr. Clar-ence Goodnight, Chairman, Department of Biology,Western Michigan U nisersity, Kalamazoo, Michigan49008. An Affirmative Ation/ qual Ermploi-ment Op-portunit v Emplo sver.

POSITIONS OPEN

CARDIOLOGIST The Division of Cardiology in theDepartment of Medicine at the University of Alabamain Birmingham has available two positions at the assis-tant professor or the associate professor level. The posi-tions are open to qualified individuals at a senior levelf'ulfilling three criteria. First, the individual must haveexpertise in the care and management of patients withcardiovascular disease and in cardiac catheterization.Second, the indisidual must hase a firm commitmentto teaching programs oriented to medical students,graduate students, house officers, and fellows. Finally,the indisidual should havs a research background andbe abic to carrs out independent research. Apply to theD)ivision of Cardiosascular Disease, Department ofMedicine, Ulniversitv of Alabama Medical C'enter, Bir-mingham, Alabama 35294 ( Attention Ms. NormaMcSweenev). Telephone: 205-934-3285. An Equal Op-portunit./Affirmative Action Emploier. Expirationdate for receipt of applications: August 1975.

U'NIVERSIT' OF CALIFORNIA AT DAVISCELI, BIOLOGIST/PLANT BIOCHEMIST-

PHYSIOLOGIST and PHYSIOLOGIST/HORTI-CUL'TURIST. Both positions in the Postharvest Biol-ogy Laboratory. For details please see page 754 of' the16 May issue ol Science.

Applications are invited for an appropriate f'acults ap-pointment in DIAGNOSTIC' RADIOILOGY with spe-cialization in medical electronics. A Ph.D., D.E., ormaster's with some experience is required, responsi-bilities will include research, service, and teaching TheL)ivision of' Radiological Sciences is involved in re-search in image processing and pattern recognition ofnuclear medicine and ultrasound images, electronic ra-diography, and radioisotope tracer techniques. A suc-ccssful candidate is expected to have experience insome of the following areas- computer interfaces, directinterprocessor links, rotating memors, logic circuitrs,gamma cameras, x-ras equipment. RF circuitry (I to18 Mhz), and medical clectronics instrumentation.Candidates should direct inquiries to: Dr. Richard C.Rilev, Head, Division of Radiological Sciences, Depart-ment of Diagnostic Radiology, tIniversitv of KansasMedical Center, Kansas City, Kansas 66103. An EiqualOpportunits, Emplo iver.

ECOLOGIST. Quantitatise ecologist for facults posi-tion in teaching and rese.irch in wildlife managementand natural resourccs. Appointtnent is on a 12-monthbasis, rank and salars negotiable. Send resume to Divi-sion of Forestry, W'est Virginia lUnisersity, Morgan-town, West Virginia 26505.

FACUtLX POSITIONIABORATORX ANIMAL MEDICINE

Faculty position asatlable in laboratory animal med-icine ait Yale School of Medicine, Section of Com-parativc Medicine. Candidate must be qualified in veterinars internal medicine or laboratory animal medicine and hase active clinical rescarch interests. Salarand rank commensurate with experience. Submiresume to Dr. Albert M. Jonas, Professor and ChiefSCM, 375 Congress Avenue, New Hasen, Conn. 06510Yale Universitv is an Equal OpportunilyAffirrnativA ction Emplo_ver.

TWO FACULTY POSITIONSDEPARTMENT OF RADIOLOGY

The University of Michigan Medical School is seeking a Board-eligible or Board-certified M.D. The phssscian will take part in the programs of patient cartteaching, and research carried on in the Department CRadiology. Phvsician will supervise the activities ol thresident stafl and aid in tcaching residents and medic"students. Please send resume to Box 275, SCIENCICode #'s 1800H0 and 2900H0.A s ondis rirninatorV -Affirmatiive Action EAnplover

NEUROBIOILOGISTPROFESSOR OR ASSOCIATE PROFESSORThe University of Michigan Medical School, Di

partment of Anatomy, is seeking person holding tlPh D. and/or M.D. degree who is interested in stimilating progressive research on the mammalian centr,nervous system and who has the leadership to developpostdoctoral program. There will be an opportunityparticipate in teaching neuroanatomy to graduate ar

medical students. Please send curriculum vitae beforeAugust 1975 to Box 274, SC'IENC'E. Code #1400F0.A VondiscriminatorV. -ffirrmativ'e A ction Employe

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We can also collate a selection ofreprints into folders for use in course-work. This is an opportunity for youto create your own specialized course-work material.

To receive a free catalog of availablereprints send your request to Dept.RP-1. For additional information oncompendiums, contact Grayce A.Finger.

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

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CARDIOVASCULARPHARMACOLOGIST

Candidates should have a PhD inPharmacology or a related dis-cipline with interest and experi-ence in the study of drug effectson the cardiac conduction sys-tem. Primary responsibility willlie in the supervision of a groupdevoted to the development ofantidysrhythmic drugs. Interestedpersons should send their re-sume of education and researchexperience to:

CHARLES L. SMITHResearch Administrator

WyethWYETH

A LABORATORIES, INC.

P. 0. Box 8299Philadelphia, Pa. 19101

An Equal Opportunity Employer

DEPARTMENT OF HEALTH, EDUCATION& WELFARE

PUBLIC HEALTH SERVICE

FOOD AND DRUG ADMINISTRATION

SCIENTIST (Medical and/or public healthaspects of food and cosmetic technology)

As Director, Bureau of Foods, conducts broadnational programs to protect the nation's publichealth against impairment by foods, food additivesand colors, and cosmetics. Directs a staff of 850scientific, managerial and technical support per.sonnel engaged in research and scientific studiesin microbiology, pathology, toxicology, food/cos-metic chemistry and technology, and nutrition;development of standards on the composition,quality, nutrition and safety of foods, food addi-tives, color and cosmetics and the planning andexecuting of FDA's surveillance and complianceprograms.

Applicants must be nationally recognized scientistswith extensive experience which clearly demon-strates the capability to plan, evaluate and managebroad scientific and technological research andoperational programs of national public health sig-nificance and strong leadership and supervisoryqualities. A Ph.D., or equivalent, in the biologicalor physical sciences is highly desirable. Publica-tions, professional activities, honors and awardswill be considered as indications of achievement,peer recognition and status in the scientific com-munity. Salary-$36,000 per annum (GS-18)

HOW TO APPLYSubmit a curriculum vitae, bibliography and acompleted Standard Form 171 (Personal Qualifica-tions Statement) to Division of Personnel Manage-ment, FDA, Room 10-85, Parklawn Building,5600 Fishers Lane, Rockville, Maryland 20852.

FDA-Where Equal Opportunity is the Rule.

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POSITIONS OPEN

FACLtIYT POSITION: Assistant Professorship be-ginning September 1975 To teach and conduct re-search in air and gas cleaning technologs Require-ments cducation through doctoral lesel in air pollutioncontrol, ensironmental engineering, industrial hygiene,or related specialty, minimum of 2 to 4 sears of prac-tical experience conducting air and gas cleaning re-search Abilits to write professionally Qualifiedwomen (and ominoritv group members are encouragedto appl/ Submit risumes to Dr. Dade Wt. Moeller,Haanard School of Public Health, 665 Huntington Ave-nue, Boston, Massachusetts 02115.

FAC( IITY POSITIONS IN BIOCHFMISTRYASSISIAN'I PROF)ESSOR: Ph I) or M D with

special interests in research and teaching in neuro-biochemistrs, biochemical endocrinology, or nucleicacid chemistrsASSOCIATE PROFESSOR: Ph D. or M D. with

strong research background and teaching experience inthe area of Nutrition-Metabolic Regulation

Both positions asaliable fall 1975 Please send in-quiries and curriculum sitae to: Personnel D)epartment,The U niversitv of Texas Health Science Center at Dal-las, 5323 Harrv Hines Blvd., Dallas, Texas 75235.

.4n Equal Opportunitt ,Affirmative Action Em-ploiver.

FACt I TW POSITIONSApplications are invited for teaching in the mcdical

basic scicnce disciplines of anatoms (including Histol-ogy-Embrsologs), Biochemistrs. Microbiology, Phar-macologs, and Physiology. Salaries and ranks (In-structor, Assistant, Associate) commensuratc withqualitications. Qualits teaching eniphasis. Research en-couraged but not mandatory. Modern hospital. Cul-tural citN. Excelent suburban lising. Scnd resume, let-ter, and three reterence contacts to Dr. Ws. V. (ole,Dean, College of Osteopathic M1edicine, IndependenceBlvd., Kansas Cit., Mo. 64124.

GENE [1('lSTPermanent position (9-month appointment) begin-

ning 16 August 197>. Apply:Joe K. Neel, ChairmanDepartment of Biology

Universitv of North DakotaGrand Forks, N.D. 58202

Telephone: 701-777-2621

IMMUNOLOGIST. Ph.D. with interest in hematologyfor project starting July 1975 involving character-ization of Hodgkin's disease cells. Please send resumeto: S. B. Shohet, M.D., Director, Cancer Research In-stitute, tIniversitv of California, San Francisco, Calif.94143.

The Univeruitij oJ California, San Francisco, is anEqual Opportunitj Emplorver with an jffirmatire Ac-tlion ProgramZ.

THREE INSIRUCIOR ORASSISTANT PROFESSOR POSITIONS

DEPARTMENT OF SURGERYThe University of Michigan Medical School is seek-

ing M.D.'s who hase completed residency in GeneralSurgers and who evidence an interest in an academicsurgical career. Candidates must possess the ability toinstruct and advise doctors in our residencs program.The applicants must also evidence an interest in emer-gency medical carc and surgerv ot trauma. Positioncode # s 200H0, 400H0, and 500H0. Please sendresume to Box 273, SCIENC'E.A Vondiscrimiinator, .Affirmative Action Emplover

MICROBIOIOGYTwo positions asv.ilable, August 197-5. (i) Prolfessor

ol Microbiologs ($28,00tf to $30,00(0), M.D. with atle.ist 10 years oi expericncc in tcaching zind research inmedical microhiologs and immunologs. Must hase in-ternaitional recognition in imrrunologs rescarch. (ii)Associate Professor of Microhiologs ($24,000 to$26,000), M.I). (prctcrred) or Ph.D. (possible) with atleaist 6 sears ol experience in tec.ching aind research inmicrrobiologs and ccllular immunologs. Both positionsrcquire tcaching microbiologs and itimunologs tomedical, dentili, and graduate students, supervision ofgraduate studcnt rescarch, and indcpendent rescarchactivities supported bs f'unds solicitcd fromil outsidcagencics. Scuid curriculumil *sitac .and list of publicationsto Dr. Felix Mlilgrom, Professor and Chairman, De-partment of Mlicrobiology. 203 Sherman Hall. StateUniversits of Nesr iork at Buffalo, Buffalo.NA. 14214.State U nitversiih of Newis ork at Buftfalo 1'. an E qualOpportictiiti lf,.-ffiroticitii ,e A ctiont Emoiploi vr.

230

POSITIONS OPEN

MAMMALIAN PHYSIOI,OGIST (two positionsavailable) Major responsibility, teaching medical anddental physiology. Assistant prof'essor rank; salarv ne-gotiablc, starting September 1975: Send applicationand lctters of recommendation to:

Dr. Ewald E. SelkurtDepartment of Phy siology

Indiana Ulniversity Medical Center1100 Vs'est Michigan StreetIndianapolis, Indiana 46202

Indiana UniveriitY is an Equal OpportunitlAffirmative -Action Emplo \ier

MARINE BIOLOGIST-ECOLOGISTPosition for Ph.D. marine biologist or ecologist open

I October 1975 as Division Head and Senior Scientistin contract research investigations. Should have suf-ficient experience in marine biology as well as in physi-cal and chemical oceanography to develop and carryout multidiscipline marine environmental research con-cerned with the effects of petrochemical pollutants ontropical marine ecosystems. Experience in tropical in-vestigations and former research support by USAECdesirablc, but not required. Qualified applicants shouldsend a curriculum vitae including academic training,list of' publications and names of three ref'erences to F.G. Loowman, Associate Director, Puerto Rico NuclearCenter, College Station, Mayaguez, Puerto Rico 00708.An Lqual Opportunit j Emplo ver.

PHYSIC AL -CHEMICAL OC'EANOGRAPHERPosition for Ph. D. physical-chemical occanographer

open Jul) 1975. Interested in candidates versed inphysical oceanographs with secondars experience ortraining in coastal geochemical processes. Qualified ap-plicants should send a curriculumii vitae including aca-demic training, list of publications, and names of' threereferences to F. G. ILowman, Associate Director, PuertoRico Nuclear Center, C'ollege Station, Mayaguez,Puerto Rico (8708. An Equal Opportuniti EmnploYer.

NEUlROPHYXSIOLOGY MEMNBRANE PHiSIOL-OGY, research associate or postdoctoral fellow rc-quired to study mechanism of excitation of cornealnerves by mechanical and thcrmal stimuli. Salary nc-gotiablc. Send curriculum svitae, names of referees and/or request for further information to: Dr. D. Maurice,Division of Ophthalmology, Stanford Medical Center,Stanford, Calif. 94305. StanJord Universitv is an EqualOpportunit-, Affirmative .4 ction Emplorver

PEST MANAGEMENI'A full-time, regular facults position at the assistant

entomologist level for research in pest management,with particular refe'rence to agricultural entomologyand the biologs, ecologs, and integrated control of ar-thropod pests of pears, apples, zind walnuts.

The Unirersoiti of California i.s an Equal Opportu-nitr Emplover. Womtnen and m1inoriti candidates areurged to applr.

Further information supplied on request. Applicantsshould send curriculum vitae, transcripts, namcs andaddresses of at least three references, copies of publica-tions, and letter stating research and tcaching interestsand brief description of' how applicant expects to de-velop this research assignment to Professor Evert 1.Schlinger, Chairman, Division of Entomology and Para-sitology, 201 Wellman Hall, IUnisersity of California,Berkelev, California 94720.

PHII'SIC'Al, O( FANO(,R.AI.IPHRThe C hesapeake Bas Institute of The Johns tlopkins

Unisersity has a position available for a physicaloceanographer. Applicants should hase a Ph.D. orequivalent research cxpericncc and should bc intcrcstedin working on estu.irinc problcmils, both practical andtheoretical. The appointment will be for an initial pe-riod of' sear beginning in the fall of 1975. Applicantsshould submit a curriculumil vit.ae and the names of rcf-erences to: The Director, C'hesapeake Bay Institute,The Johns Hopkins Unisersity, Baltimore, Marvland21218.

An Equal OJpportul'iti kEmplover MIF

POSITION AX All ABILF: Postdoctoral NIII-sup-ported rprojct on histocomiipatibility immune responsegenes in chickens. Ph.). in genetics and immuno-biologs. Starting Scptcniber or sooner. $12,s00. Con-tact Dr. S. A. Ewing, Department of Animal Science,101 Kildee Hall, Iowa State Universitv, Ames, Io%a50010.

POSITIONS OPEN

DEPART'MENT OF PHYSIOLOGIMcGILL UNIVERSITY

Cell Membrane Biologist. Applications for an ap-pointment at the rank of assistant professor are invitedfrom individuals with postdoctoral experience in thestudy of cell-surface receptors at the molecular les-l.Duties include teaching receptor mechanisms to ho-nours physiology, immunology, and neurophysiologystudents. Send applications with curriculum vitae andnames of three referees to: Dr. J. Milic-Emili, Chair-man, Department of Physiology, McGill University,3655 Drummond Street, Montreal, Canada H3G IY6.

PHYSIOLOGISI The Department of Physiologyand Biophysics at the University of Alabama in Bir-mingham has available a position at the instructor levelfor individuals with the Ph.D. degree. The position iqopen to qualified individuals fulfilling the following cri-teria. First, demonstration on the basis of publication'that the individual has a good mathematical back-ground and has the ability to apply mathematical modeling to biological transport systems. Second, the individual must have demonstrated outstanding expertmental ability, and, finally, must have broad training irthe area of mammalian physiology. Teaching duties involve teaching physiology and biophysics to dentalmedical, optometry, and graduate students. Apply tcthe Department of Phvsiology and Biophysics, University Station, Birmingham, Alabama 35294. Send curriculum vitae and the nanies of' three scientists for ref'erencc. An Equal OpportunitrvAffirmative ActioiEmplo.ver. Expiration for receipt of applications:July 1975.

CALIFORNIA INSTITIJTE OF TFC'HNOLOGX'seeks candidates for a position in

PLANETARY SCIENC'Ewith emphasis on planetary surfaces or planetars atmospheres, and on observational programs usinspacecral't. Appointment prefe'rably at the assistanprofessor level.

Please contact Dr. B. Kamb, Chairman, Division cGeological and Planetary Sciences, California Institutof Technology, Pasadena, California 91125, givinresume, bibliography, and research interests.

An Equal Opportunit Emplo i-er

POSTI)OCTORAL FELLOW. Position availablstarting Julv 1975 for research in tumor immunologsPrimarily focusing on the role of blocking antibodsboth human and animal ssstems. Duration 2 to 3 year.salars $11,000 to $12,000. Send curriculum sitac anrel'erences to I)r. N. S. Harris, Chief, Transplant ImmLnology Division, Shriners Burns Institute, GalvestoiTexas 77550.

POSTI)OCIORAI FEIIOW OR RESEARCH ASSOCIAATE: Microbiologist or biochemist with interein polssaccharide chemistrsr, ultrastructure, or cell relulation mechanisms for research on prokarsotic descopmental systems (myxobacteria and blue-greens). Saary $8500 and possible teaching supplement. Currictlum sitae, reprints, and names of three referenctshould be scnt to: Dr. H. D. McCurdv, Head, BiolofDepartment, University of Windsor, Wsindsor, OntariCanada.

SCIENCE, VOL. 1I

PHYSICAL SCIENCEADMINISTRATOR

Will plan and administer con-tract research programs in power,propulsion, energy conversion,and tribology.

Ph.D. or equivalent in chem-istry, physics, material sciencesor engineering with an establishedresearch reputation in propul-sion or energy conversion.

Salary $29,818 to $36,000Send resum6 by 15 July 1975

to:

Director ofCivilian PersonnelAttn: E. RoadmanOffice of Naval Research800 North Quincy StreetArlington, Virginia 22217

An Equal Opportunity Employer

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m mPh.D. -

12DueTOTOXCOLOGIST inTeDue to expansion in our research activities an opportunity now exists in TheToxicology Group of our Drug Safety Evaluation Division for an individual todesign experimental protocols as well as plan, activate, evaluate and interpretresults of drug safety studies.

The successful candidate will possess a Ph.D. in Pharmacology or Toxicologyor D.V.M., 1-3 years experience in Industrial Toxicology is required. H

Ortho is located on a 58 acre campus in central New Jersey. We offer anattractive compensation and benefits package complemented by an environ-ment geared to personal growth and development.

Interested individuals should forward their curriculum vitae with salary historyand requirements IN COMPLETE CONFIDENCE to John C. Krause, PersonnelAdministrator.m

HE rORTHO PHARMACEUTICALCORPORATION i

HE , X 1R,Aw20)Raitan.N(o'.1(rs(pN' (886-){(A 546- .....CTH .,,(onmpany)

- sIn~ua'(/U/ pporttjnids emploser,X,f

MEDICAlBIOSTATISTICIANThe Medical Research Division of CIBA-GEIGY has anopening for a Medical Biostatistician who will serve as aconsultant in the design and analysis of clinical studies,evaluating new pharmaceutical agents. A Ph.D. in bio-statistics is preferred; however, applicants with a Master'sdegree will be considered. The individual we are seekingmust be capable of overseeing projects through, fromstart to finish. The nature of the work will be all-inclusive-i.e. Experimental Design, Development ofCase Reporting Forms, Evaluating Data and Preparationof Reports summarizing the results of clinical studies. Inaddition, this individual will be expected to becomeproficient in research methodology as it applies to clini-cal research and keep abreast of new statistical techniquesapplicable to medical investigation.This position offers broad professional and personalgrowth potential in the area of clinical research. Com-pensation will be based on education and background.For prompt, confidential consideration, please send de-tailed resume including present and desired salary in-formation to: Mr. C. R. Grupe, The PharmaceuticalsDivision of CIBA-GEIGY Corporation, 556 Morris Ave-nue, Summit, New Jersey 07901. We are an equal oppor-tunity employer/male and female.

CIBA-GEIGYI

los)alamnosSCIlNTFIC LABORATORYuusNgmnaiiuomn

AN AFFIRMATIVE ACTION/EQUAL OPPORTUNITY EMPLOYERUNITED STATES CITIZENSHIP REQUIRED

3 JUNE 19751237

Please send complete resumeor request application from:R. Lynn Wilson,Recruiting SupervisorDivision 75-AN 4Los Alamos ScientificLaboratoryP. O. Box 1663Los Alamos, New Mexico 87544

Ap-

ol -IN

-

IMA GE ANAL YSIS

Applications are invited for a senior position ina group performing both research and appliedactivities in computerized image analysis. Appli-cants should have a broad grasp of many as-pects of image analysis, including classical en-hancement and restoration, data extractionand pattern recognition. These qualificationswill be judged by publications and by profes-sional activities. This person will be involved inresearch and in applications of image analysisto applied problems. Supplementally this per-son will help maintain close professional tieswith other centers of image analysis researchand will assist in the preparation of fundingproposals.

I

I 11

NOTICEESTABLISHMENT OF A SOLARENERGY RESEARCH INSTITUTE

Section 10 of the Solar Energy Research, Devebpment,and Demonstration Act of 1974 (42 USC 5559 of Public Law93-473) calls for the establishment of a Solar Energy Re-search Institute by the Energy Research and DevelopmentAdministration. To assist it in carrying out this mandate,ERDA has sought advice from the National Academy ofSciences.A committee appointed by the Academy is considering the

criteria that should govern the physical nature, organization,funding, staffing, management, and choice of location(s) of aSolar Energy Research Institute, and its relationship withkindred government and non-government organizations andprograms. The committee will not select the location of theInstitute or any components thereof.To facilitate its work, the committee invites interested or-

ganizations and others with appropriate competence to sub-mit their written views on several specific issues, a list ofwhich is available upon request. Respondents should alsoinclude a brief statement indicating the nature and extent oftheir involvement in the field of solar energy. For convenience,the field is divided into six categories: heating / cooling ofbuildings; solar thermal; wind energy; bioconversion; photo-voltaic; ocean thermal.Submissions should reach the committee no later than

July 15.Address all correspondence to

Executive SecretarySolar Energy Research Institute CommitteeNational Research Council2101 Constitution Avenue, N.W.Washington, D.C. 20418

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POSITIONS OPEN

POSTDOCTORAL FELLOWS (two): one fellow willparticipate in the study of dynamics and natural distri-bution of hydrocarbons in Alaskan marine waters. Ex-perience in the operation and care of gas chromato-graph-mass spectrometer/mass spectrometer/com-puter system highly desirable. One fellow will partici-pate in the study of the chronic chemical biologicaleffects of Alaskan oil seeps. Experience in gas chro-matographic analysis of petroleum hydrocarbons is de-sirable. Send resume and names of three references toDr. D. G. Shaw, Institute of Marine Science, Universityof Alaska, Fairbanks, Alaska 99701.The University ofAlaska is an Equal OpportunitY,

POSITIONS OPEN

PHYSIOLOGIST, REPRODUCTIVE BIOLOGIST,OR BIOCHEMIST

Ph.D. to work as postdoctoral fellow or researchassistant to investigate epididymal physiology, bloodtestis barrier in established micropuncture laboratory.Funds available now through May 1978. Training inreproductive physiology/biology or membrane physi-ology or renal physiology desirable. Needs no micro-puncture experience.Send curriculum vitae and references to: Dr. Stuart

S. Howards, University of Virginia Hospital, Box 236,Charlottesville, Virginia 22901.

A_rmative Action E:mployerPROFESSOR OF BIOSTATISTICS-to teach and

POSTDOCTORAL POSITION available starting direct research in biostatistical methods within the De-September in an established program on insect-micro- partment of Preventive Medicine and Environmentalbial interactions. Possible areas of investigation are: Health of the University of Iowa Medical School. Thismicrobial transformations of pheromones, insect isa professional academic appointment in which estab-pheromone biosynthesis, insect tissue culture, microbe- lished teaching and research abilities and interest in ap-microbe interactions in the insect gut. Applicants plied biometrics will be important qualifications. Ap-should have a strong background in chemistry and/or plicants must have doctorate in Biostatistics or abiochemistry. Some experience in microbiology or en- closely related field, and must have demonstrated abil-tomology would be advantageous. Send curriculum ity to prepare students for careers in Biostatistics. Con-vitae and references to: J. M. Brand or A. J. Mark- sultations with clinical investigators in various medicalovetz, Department of Microbiology, University of Iowa, school departments are important functions of theIowa City, Iowa 52242. Biostatistical staff. Salary will be commensurate with

qualifications and responsibilities. The University ofIowa is an Equal Opportunity Employer. Direct in-

POSTDOCTORAL POSITION available for studies quiries and submit curriculum vitae by I Septemberon glucocorticoid mechanisms and receptors in normal 1975 to: D. P. Morgan, Department of Preventive Medi-and abnormal lymphocytes. Biochemical background cine and Environmental Health, University of Iowaand/or previous experience in this or related areas is School of Medicine, Iowa City, Iowa 52240. Telephone:desirable. Salary for first year is $10,000. Applicants 319-353-5558.should submit a curriculum vitae and have two lettersof recommendation sent to Professor Allan Munck, ..Department of Physiology, Dartmouth Medical School, A position at the Research Associate level is avail-Hanover, N.H. 03755. An Equal Opportunity/Affirma- able in the Lunar and Planetary Laboratory at the Uni-tive Action Employer. versity of Arizona. The applicant should have a docto

rate in planetary sciences with experience in geologicalstudies of planetary surfaces. A familiarity with space-

POSTDOCTORAL RESEARCH ASSOCIATE craft imagery of lunar and planetary surfaces is essen-Available immediately for recent Ph.D. in Biochemis- tial. The research involves geological mapping and tec-try, Microbiology, or Molecular Biology. Starting sal- tonic and cratering studies of planetary surfaces, par-ary $10,000 per year. Research on histone lysine trans- ticularly Mercury. Applicants should send their resumemethylases in normal and neoplastic tissues. Send cur- by 15 July to R. G. Strom, Lunar and Planetary Labo-riculum vitae and letters of recommendation to Dr. ratory, University of Arizona, Tucson, Arizona 85721.John A. Duerre, Microbiology Department, University The Universitv of Arizona is an Equal Opportunityof North Dakota, Grand Forks, N.D. 58202. Employer.

POSTDOCTORATE-ORGANIC CHEMISTRYPostdoctoral position available involving synthesis ofnovel polypeptide hormone analogs. Strong organicsynthetic background (plus NMR) desirable. High mo-tivation essential. Louisville, Kentucky, offers stimu-lating environment, culture, thoroughbreds, limestone,and so forth. Begin I July 1975. Please send resume,graduate transcript(s), and letters of recommendationto: Dr. Amo F. Spatola, Department of Chemistry, Uni-versity of Louisville, Louisville, Kentucky 40208. AnEqual Opportunity/Affirmative A ction Employer.

Washington University, St. LouisPOSTDOCTORAL RESEARCH IN

CELL BIOLOGYSeveral positions are available with a multi-

disciplinary group interested in fundamental aspects ofthe lysosome-vacuolar apparatus. These include en-zyme uptake and secretion by various cell types, en-zyme replacement in lysosomal storage diseases, im-munological aspects of gene produce replacement ther-apy, and secretion of serum proteins with emphasis onintracellular precursors. Salary is negotiable. M.D. orPh.D. required. Contact Dr. William Sly, Division ofMedical Genetics, or Dr. Philip Stahl, Department ofPhysiology, Box 8102, Washington University MedicalSchool, 660 South Euclid Avenue, St. Louis, Missouri63110. An Equal Opportunity Employer.

POSTDOCTORAL TRAINEESHIP available forstudies on factors controlling growth of plasma cell tu-mors in cultures. Stipend range: $10,000 to $12,000plus benefits. Send curriculum vitae to Dr. V. P. Hol-lander, Director, Research Institute, Hospital for JointDiseases, 1919 Madison Ave., New York, N.Y. 10035.An Equal Opportunity Employer.

PRESIDENT-UNIVERSITY CONSORTIUM. TheUniversities Space Research Association, a nationalconsortium engaged in activities related to space re-search, seeks candidates for a part-time position asPresident. Established reputation in space sciences orclosely related field necessary. Successful applicantcould continue existing university appointment on part-time basis. Send credentials to USRA, P.O. Box 5127,Charlottesville, Virginia 22903.

An Equal Opportunity Employer

1238

RESEARCH ASSOCIATES (I- to 3-year positions).Two positions available in September 1975. One forbiochemist interested in research in protein biosynthe-sis mechanism and one for organic chemist with experi-ence in nucleoside or carbohydrate chemistry. Salariescommensurate with applicant's experience. Sendresume to: Dr. S. Chladek, Michigan Cancer Founda-tion, 110 East Warren, Detroit, Michigan 48201.

RESEARCH ASSOCIATE-IMMUNOCHEMIST:A position is available for a Ph.D. or M.Sc. with expe-rience who would be directly involved in isolation andcharacterization of microbial antigens and lymphocytemembrane components. Previous experience in immu-nochemical techniques and glycoprotein chemistry ispreferable. Applicants should submit curriculum vitaeand references to Dr. V. J. Iacono, Department of Peri-odontics, State University of New York at Stony Brook,Stony Brook, New York 11794. An Equal Opportu-nity/Affirmative A ction Employer.

FACULTY POSITION IN WILDLAND FIREMANAGEMENT. Salary: Position is to be on anIl-month basis with title and salary commensuratewith experience. Duties: Teach upper division andgraduate courses and do research dealing broadly withwildland fire behavior and management, including fuelsmanagement and the concepts of fire detection, sup-pression, and use. The appointment is to be approxi-mately evenly divided between teaching and research.Share academic and administrative duties with theother faculty by serving on faculty and student com-mittees. Qualifications: The applicant must hold aPh.D. degree. Areas of expertise may include a firmfoundation in wildland management, concepts andmethods, and an understanding of wildland ecology,computer modeling, and optimization techniques. Thecandidate should also have knowledge of, and interestin, fire as a field of research. Date: The position isavailable to be filled as soon as the appointee is avail-able. Applications will be accepted until I Septem-ber 1975. Applications: Applicants should forward aletter of application, together with transcripts, copiesof any publications, and names of three references to:Professor Lee C. Wensel, Department of Forestry andResource Management, University of California, Berke-ley, California 94720. The applicant should have lettersof reference sent directly to the above address.

applications for temporary position for 1974-75 ac.demic year may be reconsidered. Send curriculum vitzand three reference letters to Dr. J. A. SealandeChairman, Search Committee, Department of ZoologUniversity of Arkansas, Fayetteville, Ark. 72701.An Equal Opportunity/Affirmative Action Employe

SCIENCE, VOL. 18

POSITIONS OPEN

SCIENTIST (one) to join active Rehabilitation Serviceat a major university medical center in New York Citywith established reputation in temperature regulation,circulatory and exercise physiology. Equipped withtemperature control rooms, support laboratories, andsizable amount of equipment. Experience in theseareas of physiology desirable and interest in possiblecardiovascular rehabilitation preferred. Academic ap-pointment and salary commensurate with educationand experience. Possible joint appointment with appro-priate basic science department. Write to: John A.Downey, M.D., Chairman, Department of Rehabilita-tion Medicine, Columbia-Presbyterian Medical Center,630 West 168 St., New York, N.Y. 10032. An EqualOpportunity Employer.

STAFF DIRECTORThe Assembly of Life Sciences of the National

Academy of Sciences-National Research Council isseeking a staff director for the staff of its Committee onProsthetics Research and Development.

Candidates should be professionals from the fields ofmedicine and/or engineering, preferably having exten-sive experience in the rehabilitation of disabled per-sons. Substantial management and leadership experi-ence in academic, government, health care, or indus-trial organizations is required. Experience with labora-tory and clinical evaluations, negotiations withgovernment agencies, and familiarity with grant pro-posal review processes is desirable.

Inquiries should be addressed to Dr. Artemis P. Sim-opoulos, Executive Secretary, Division gf Medical Sci-ences, Assembly of Life Sciences, National Academy ofSciences, 2101 Constitution Avenue, NW, Washington,D.C. 20418.

An Equal Opportunity Employer

THEORETICAL ECOLOGIST, I-year appointmentat the assistant professor or lecturer level beginningSeptember 1975. Responsibilities will include theteaching of a graduate-level biometry course in the falland participation in a mathematical ecology course inthe spring. Send resume and three letters of recommen-dation to: Dr. F. James Rohif, Acting Chairman, De-partment of Ecology and Evolution, State University ofNew York at Stony Brook, Stony Brook, New York11794.An Equal Opportunity/Affirmative Action Employer

TUMOR BIOLOGISTApplications are invited from interested persons for

a faculty position available on or about January 1976in the Joint Center for Radiation Therapy, Departmentof Radiation Therapy, Harvard Medical School.

Applicants should be conversant with the biology oltransplantable animal tumors, cell kinetics, cell and tis-sue radiation biology, and assay methods for measur-ing the effects of radiation and/or chemotherapeuticagents on tumor responses. There is ample opportunit)for close collaboration and interaction with active research groups in bone marrow stem cell kinetics an(cell radiation biology.

Teaching responsibilities include medical studentsresidents in radiation therapy, hospital house staff, antdirection of the research of graduate students and postdoctoral fellows. Ample research facilities, includinlanimal quarters, are available. Faculty appointmenand salary will be commensurate with qualificationand experience. A Ph.D. or M.D. degree is required.Send curriculum vitae and names of three reference

to:James A. Belli, M.D.

Joint Center for Radiation TherapyDepartment of Radiation Therapy

Harvard Medical School50 Binney Street

Boston, Mass. 02115Harvard University is an Equal Opportunity and A

firmative Action Employer.

ZOOLOGIST/ECOLOGISTTemporary position for academic year 1975-76, assisiant professor rank, for Ph.D. with preferred speciaization in systems or population ecology, to begin 2August 1975. Expected to teach courses in vertebralnatural history, omithology, and animal behavior anto participate in general biology. To be considered, alplications must be submitted by 10 July 1975. Previon

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I

No other research quality laboratorymicroscope gives you so much forso little. You see better, you seemore because of Balpian'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- iLpended inner arm insures VAvibration-free images withpositive stability. There isnever anyim0age drift

N4'

Write to Bausch & Lomb, Scientific Optical Products Division, 20718 Bausch Street, Rochester, N.Y. 14602.Circle No. 358 on Readers' Service Card

AL-AMW.

a

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Full Spectral Kinetics in

With the TEKTRONIX 7J20-RSS, it is now possible to recordthe entire absorption spectra of stopped-flow experiments inreal time from 250 nm or less in the UV region to 1100 nm inthe near IR. This allows you to observe the kinetic spectra ofenzyme reactions, including intermediates and spectralchanges; test quantitative data to fit kinetic 4qitl M Iianalyze standard reactions for perturbations; a perfmmany other procedures that require informatio f t Uvisible, and near IR regions.

The 7J20-RSS has two gratings. One gives youa 400-nm spectral window with 4-nm resolution.

The other, blazed especially for the ultraviolet region, givesyou a 200-nm window with a resolution of 2 nm. This grating, in

combination with the proper light sources, enhances the perform-ance of the instrument in the ultraviolet. The 7J20-RSS measures

absorption spectra from 250 nm to 1100 nm in units of absorbance ortransmittance, and displays the spectra as rapidly as it scans them (400 nm

as fast as 4 ms).For complex analyses of spectral data, the 7J20-RSS can be used with a Digital

Processing Oscilloscope, which provides software-controlled data acquisition, proces-sing, and analysis. The processor acquires the information, and the controller stores it,

as rapidly as the spectra are scanned. The controller calculates the absorption spectra and further analyzes thekinetic data. The results may then be displayed on the crt or a graphic terminal, or recorded as hard copy.The 7J20-RSS will easily interface with commercial or custom-made stopped-flow kinetics instruments. Butchemical kinetics is only one of its possible uses in the chemist's lab. The 7J20-RSS can also help you performabsorption or luminescence spectroscopy or measure the spectral characteristics of virtually any light source inyour laboratory.For a demonstration or application assistance,contact your nearest Tektronix Field Office or Analytical InstrumentsMarketing, (503) 644-0161, ext. 7505. For completeinformation, write Tektronix, Inc., P.O. Box 500, Beaverton,Oregon 97077.

TEKTRONIX®committed to

technical excellence

For Demonstration Circle Readers' Service No. 488For Information Circle Readers' Service No. 489