BOOKS RECEIVED

(Continued from page 406)

ard M. Pearl. Maxwell, Colorado Springs,Colo., ed. 2, 1971. 80 pp. Paper, $2.75.Development of Mathematical Logic. R.

L. Goodstein. Springer-Verlag, New York,1971. viii, 150 pp. $10.

Dictionary of Biology. Edwin B. Steen.Barnes and Noble, New York, 1971. viii,630 pp. Paper, $3.95. Everyday Handbooks.

Early Mammals. A symposium, London,June 1970. D. M. Kermack and K. A.Kermack, Eds. Published for the LinneanSociety of London by Academic Press,New York, 1971. xiv, 204 pp. + plates.$15.50. Supplement 1 to the ZoologicalJournal of the Linnean Society, vol. 50.

Ecology of Soil Animals. John A. Wall-work. McGraw-Hill, New York, 1970. xiv,284 pp., illus. $10.50. European AnimalBiology Series.Economics and Education. Principles

and Applications. Daniel C. Rogers andHirsch S. Ruchlin. Free Press, New York,1971. xxviii, 404 pp., illus. $8.95.

Elasticity, Plasticity and Structure ofMatter. R. Houwink and H. K. de Decker,Eds. Cambridge University Press, NewYork, ed. 3, 1971. xvi, 470 pp. + plates.$23.50.

Electronic Measurements and Instru-mentation. Bernard M. Oliver and John M.Cage, Eds. McGraw-Hill, New York, 1971.xx, 730 pp., illus. $29.50. Inter-UniversityElectronics Series, vol. 12.

Encountering the Environment. Articlesfrom Natural History, the Journal of TheAmerican Museum of Natural History.Alfred Meyer, Ed. Van Nostrand Rein-hold, New York, 1971. x, 212 pp., illus.Paper, $3.50.

Endocrines and Osmoregulation. A Com-parative Account of the Regulation ofWater and Salt in Vertebrates. P. J. Bent-ley. Springer-Verlag, New York, 1971. xvi,300 pp., illus. $16.80. Zoophysiology andEcology, vol. 1.

Physics of Hot Plasmas. Scottish Uni-versities' Summer School, Newbattle Ab-bey, 1968. B. J. Rye and J. C. Taylor,Eds. Oliver and Boyd, Edinburgh, andPlenum, New York, 1971. xvi, 456 pp. +plates.

Polarization Interferometers. Applica-tions in Microscopy and Macroscopy. M.Fran;on and S. Mallick. Wiley-Intersci-ence, New York, 1971. xii, 160 pp. +plates. $12.50. Wiley Series in Pure andApplied Optics.

Polysaccharides in Lower Vertebrates.M. Gabe. Fischer, Stuttgart, 1971. x, 544pp., illus. DM 224. Handbuch der Histo-chemie, Band 2, Teil 3.

Population versus Liberty. Jack Parsons.Pemberton, London, 1971. xxx, 418 pp.,illus. £3.25.

Principles of Biogeography. DavidWatts. McGraw-Hill, New York, 1971. xvi,402 pp., illus. $8.95. McGraw-Hill Seriesin Geography.

Principles of Health Planning in theUSSR. G. A. Popov. World Health Or-ganization, Geneva, 1971 (U.S. distributor,American Public Health Association,Washington, D.C.). 172 pp., illus. Paper,$3. Public Health Papers, 43.

Proceedings of the First InternationalSymposium on Biologial Control of

Circle No. 62 on Readers' Service Card

Weeds. March 1969. F. J. Simmonds, Ed.Commonwealth Agricultural Bureaux,Slough, England, 1970. viii, 110 pp.Paper, £2. Commonwealth Institute ofBiological Control Miscellaneous Publica-tion No. 1.Proceedings, SOS/70. Third International

Congress. Food Science and Technology.Washington, D.C., Aug. 1970. Institute ofFood Technologists, Chicago, 1971. xiv,952 pp., illus. $15.

Progress in Parasitology. University ofLondon He-ath Clark Lectures, 1968. P. C.C. Garnham. Athlone Press, University ofLondon, 1971. xii, 244 pp. + plates.$9.75.

Progress in Total Synthesis. Vol. 1.Sarah Etheredge Danishefsky and Sam-uel Danishefsky. Appleton-Century-Crofts,New York, 1971. xiv, 266 pp., illus. $12.

Reactions of Molecules at Electrodes.N. S. Hush, Ed. Wiley-Interscience, NewYork, 1971. xiv, 498 pp., illus. $24.50.

Recursive Function Theory and Logic.Ann Yasuhara. Academic Press, NewYork, 1971. xviii, 338 pp., illus. $16.50.Computer Science and Applied Mathemat-ics.The Relevance of Education. Jerome S.

Bruner. Anita Gil, Ed. Norton, New York,1971. xvi, 176 pp. $5.95.Return from Enlightenment. Forest K.

Davis. Adamant Press, Adamant, Vt.,1971. xiv, 160 pp. Cloth, $6.95; paper,$4.95.

Rorschach Handbook of Clinical andResearch Applications. Marvin R. Gold-fried, George Stricker, and Irving B.Weiner. Prentice-Hall, Englewood Cliffs,N.J., 1971. xii, 436 pp., illus. $14.95.Prentice-Hall Series in Personality, Clinicaland Social Psychology.Samson Wright's Applied Physiology.

Revised by Cyril A. Keele and Eric Neil.Oxford University Press, New York, ed.12, 1971. vi, 576 pp., illus. Cloth, $21;paper, $14.50. Oxford Medical Publica-tions.The Science of Matter. A Historical

Survey. Selected Readings. M. P. Crosland,Ed. Penguin, Baltimore, 1971. 446 pp.,illus. Paper, $4.95. History of ScienceReadings.

Scientific Knowledge and its Social Prob-lems. Jerome R. Ravetz. Oxford UniversityPress, New York, 1971. xii, 450 pp. $16.Selected Writings of Hermann von Helm-

holtz. Russell Kahl, Ed. Wesleyan Uni-versity Press, Middletown, Conn., 1971.xlvi, 542 pp., illus. $25.

Selecting a Computer System for theClinical Laboratory. Marion J. Ball.Thomas, Springfield, Ill., 1971. xiv, 116pp., illus. $14.75.

Smoking. A Behavioral Analysis. Ber-nard Mausner and Ellen S. Platt with theassistance of Judith S. Mausner. Pergamon,New York, 1971. xvi, 238 pp., illus. $14.Pergamon General Psychology Series.

Soils and Tropical Weathering. A sym-posium, Bandung, Indonesia, Nov. 1969.UNESCO, Paris, 1971 (U.S. distributor,UNESCO Publications Center, New York).150 pp., illus. Paper, $7.50. Natural Re-sources Research, 11.

Strategy Statement on Action to Avertthe Protein Crisis in the DevelopingCountries. United Nations, New York,1971. viii, 28 pp. Paper, $1.

SCIENCE, VOL. 175

PROCEEDINGS OF THESECOND INTERNATIONALCLEAN AIR CONGRESSedited by H. M. ENGLIJND and W. T. BERRY,both at Air Pollution Control Assoc., Pittsburgh.Here is a massive compendium of vital new informa-tion from 33 countries on the scientific, technological,and administrative aspects of air pollution control.It presents the papers given at the Second Interna-tional Clean Air Congress of the International Un-ion of Air Pollution Prevention Associations, heldin Washington, D.C., December 6-11, 1970. Thebulk of the volume consists of six basic sections-an introductory survey section, followed by sectionson administration, engineering, meteorology, chem-istry and physics, and medicine and biology. Aseventh section presents status reports from themember associations of the International Union, aswell as activity reports from various internationalorganizations.1971, 1380 pp., $85.00

CLINICAL IMMUNOLOGYAND IMMUNOPATHOLOGYAn International Journalco-editors: H. HUGH FUDENBERG, Univ. ofCalifornia Medical Center, San Francisco, Calif.,and ROBERT T. McCLUSKEY, Harvard MedicalSchool Children's Hospital Medical Center, Boston.Advisory Board: FRANK J. DIXON, ROBERT A. GOOD,GEORGE KLEIN, HENRY G. KUNKELThis new journal will provide an internationalmedium for the publication of original investiga-tions of both normal and abnormal aspects ofclinical immunology and immunopathology. Thescope of the journal will encompass the followingbroad areas: Immunodeficiency diseases-Lym-phoplasmacytic dyscrasias-Phagocytic functionsand defects therein-Immunogenetics-Cancer im-munology-Immunohematology-Immunoparasitol-ogy-Autoimmune Diseases-Complement kinases(and other mediators)-Transplantation immunol-ogy-Immunoeuropathology-Lmmunopharmacol-ogy-Allergy-Immunocyte function, normal andpathologic-Immune complex diseases and otherimmunologically induced diseases-Animal modelsof human diseases. The journal will also review,periodically, areas in basic immunology.Volume 1, 1972, $35.00*. Please add $2.50 for postageoutside the U. S. and Canada.*This journal is also available at a privileged personal sub-scription rate. Please write the publisher for details.

BIOMEDICAL ENGINEERINGJOURNALJournal of the Biomedical Engineering SocietyManaging Editors: JOHN LYMAN, Univ. of Calif.,at Los Angeles, and F. EUGENE YATES, Univ.of So. Calif., Culver City.The Biomedical Engineering Journal is the officialscientific publication of the Biomedical EngineeringSociety. It publishes original research in such fieldsas physiological, behavioral, biological or biochemi-cal systems; biomaterials; design of prosthetic ororthotic devices or artificial organs. It also acceptspapers pertinent to health care delivery, predictivemedicine, modeling of biological systems; legal,ethical and social factors in biomedical engineer-ing and related subjects.Volume 1, 1972(Please write the publisher for further details.)

ACADEMIC PRESSNEW YORK AND LONDON

111 FIFTH AVENUE, NEW YORK, N. Y. 10003

Circle No. 51 on Readers' Service Card

28 JANUARY 1972

J

fyiThelyequippedbenohpp

.- ~i

ofle wosseL.e

Just edd medium, inooulm ond eIeBorioiyThe BioFlo is a 350 ml chemostat, fully equipped for ex-panding the study of microbial physiology in growingcell populations. Priced at only $990, the BioFlo has afull range of sophisticated instrumentation for controlof agitation, aeration, temperature and substrate addi-tion. You can even add pH and dissolved oxygen con-trol. This bench-top chemostat makes it possible tostudy under steady-state or transient conditions, thecomposition and physiology of the cell, as a functionof growth rate, temperature, pH and growth-limitingnutrients. Every essential component is supplied forsimple, aseptic operation-from the feed, harvest andculture vessels to the tubing, clamps and filters. It evenhas its own air pump, a slide-out autoclave rack and 13liter reservoirs which allow the process to be sustainedfor long periods of time without replenishing the medium.

Send for 8 Page Booklet #C30S/172

NEW BRUNSWICK SCIENFIC CO., INC.1130 SOMERSET ST., NEW BRUNSWICK, N. J. 08903 201.846-4600

With NBS, Advanced Technology is a Way of Life.Circle No. 50 on Readers' Service Card

I

for Simultaneous Concentration or Evaporationof Ten Samples in 10 to 20 Minutes

ROTARYEVAPO-MIX {PharmacologyReproductiveFor the evaporation of multiple r Biol y

samples of solutions, the Buchler Ortho Pharmaceutical has excellentsamplesI; .XXopportunity for a scientist interested

Rotary Evapo-Mix is indispensable. It _il--- in carrying out collaborative researchP . 1 ~~A.in two areas of reproduction.

evaporates directly from test tubes Theideal c i shodu haven 5 oor centrifuge tubes and is suitable for m- more years of either industrial or aca-

evaporationof/X + or-demic research experience, passed thedoctorate, in a field closely related toevaporation of acids, bases and or- male or female fertility. Experience

ganic solvents. The Rotary Evapo-Mix with drug evaluation & demonstratedpublishing and/or patent record would

is equipped with a temperature-con- -w be helpful.trolled water bath; it may be operated _4 Ortho has an excellent benefit pro-trolled water bath;itmaybe operated ~~~~~gram, modern research facilities, andwith an efficient water aspirator or is located in a pleasant central New

Jersey suburban area.mechanical pump. ~~~~~~~~~~~~~~~~~~~~~~Ifyou meet the above qualifi-

:Another outstanding feature of the si0 catiYons,epeleatshe sbendresqumeiiAnother outstanding feature_of thew ithsalaryrequirements to Mr.

Rotary Evapo-Mix is the swirling ac- Charlment Supervisor. EmPlYtion in the test tubes which increases m SuerI \the surface exposed to vacuum thus - ORTHOincreasing the speed of evaporation. PHARMACEUTICAL

BUCHLER INSTRUMENTS DIVISION ORARPOANNEWJERSEYA08869BUCHL NUCLEAR-CHICAGO CORP. (A Company)INSTRUMEI S A SUBSIDIARY OF G. 0. I SEARLE & co.

1327 SIXTEENTH STREET, FORT LEE, NEW JERSEY, 07024 an equal opportunity employer

Circle No. 64 on Reoders' Service Card

' Sub-ArcticBiological K| I(lett SummersonFREEZERSI L Photoelectric Coloritneter

-73, -80, -87, -90, -101, -112, -131, -151 °C* Sizes: 7.4, 12 and 15 cubic foot.* All stainless steel interiors standard. W

* Maximum cooling output, excellent control,gradient and reliability.

* Fully hermetic refrigeration systems, lX Ithousands in use.

Write or Call for Details

|1~ rite or C | | t g > No. 800-3

b7y jj~~ Test Tube\ f ~~~~~~~~~NGINEERING, INC.v

1090 Springfield Road, Union, N.J. 07083 * 201-686-7870 ModelWestern Division: 15721 Texaco St., Paramount, Calif. 90723

Oldest and largest manufacturer of environmental equipment

KLETT COLONY MARKER and TALLY

3t ------..........

Circle No. 70 on Readers' Service Card460

L

This instrument takesthe drudgery and er- I' aror out of the count- -in(, of bacterial colo-nies.

A §/ettM6/NIANUFACTURING CO., INC.,179 East 87th Street. New York. 28, N.Y.

Circle No. 71 on Readers' Service Card

||||||||||||j|||||||| POSITIONSWANTED IDI|I|IIIIIIIIIIIIIIIIDIIIIBiochemist, Ph.D. Experienced in nutrition re-search and teaching, food chemistry. Desiresposition in health or environment related areas.Box 53, SCIENCE. 2/11

Biology Administration, Ph.D., broad interest,publications. Experience in teaching, research,grant administration, curriculum and facilityplanning. Box 39, SCIENCE. 1/28

Biologist/Chemist, Ph.D., university teaching ex-perience, 14 years of research experience elec-trophoresis, protein, nucleic acid fractionation,tissue culture. Industry university, governmentposition. Interests: deveiopment, hormones, vita-mins, cell biology, aging, enzymes. Box 9SCIENCE. 1/2d

Developmental Biologist, Ph.D., seeks teaching orteaching/research position. Six years of universityexperience. Strong interest in teaching: generalbiology, developmental biology, others. Box 26,SCIENCE. X

Developmental Geneticist (Ph.D., 2 years post-doctoral, 1 year of teaching experience, publi-cations) and Experimental Pathologist (M.D. 5

years postdoctoral; 6 years medical and unaer-graduate liberal arts teaching, publications). Bothpursue active research programs. Flexible aboutteaching in liberal arts or medical school. WriteBox 47, SCIENCE. X

Environmental Scientist, Editor, Administrator(M.S.); publications; editor of ten monographs(15,00 pages); computerized science informationstorage and retrieval; seeks science editing,writing, and/or administrative position. Box 48,SCIENCE. X

Geneticist, Ph.D. 1969. Postdoctoral experienceand publications. Diverse background. Researchinterest and experience in molecular and develop-mental genetics of vertebrates and Drosophila.Seeks teaching or research position. AvailableAugust 1972. Box 49, SCIENCE. X

Human Population Geneticist for senior position.Able and willing to teach biometry, genetics, andso forth, to undergraduates, but requires goodcomputer facilities. Write for summary. Box 45,SCIENCE. 1/28

Japanese into English. Medicine, biochemistry,pharmacology. Prompt, accurate, $25 per 1000English words. American. Tokyo InternationalP.O. Box 5328, Tokyo, Japan. 2/11

Ubrary Research-Reviews. Ph.D., 46, residentD.C. area. Broad knowledge biophysical sciences.Many publications, experienced writer. Preferpermanent status in 2 to 6 months for 20 to 30

we . Saalr L6O0 per month up de-nouSi Urt r, expected.Consider smaller, or single assignniOnt. Box 50,SCIENCE.

28 JANUARY 1972

New 2

...O0g9 ccuray,fast,rugged-New Torbal PL-12 top loader (2000g capac- mechanism; no knife edges to dull or chip.ity, tare to capacity plus 325g, 0.1g accu- Fast weighing-with no friction to over-racy) provides.optical projection readout... come or to build up over the life of the bal-fast, easy-to-read, foolproof weighing. ance, dash pot can be adjusted to attain restEasy reading of optical projection with point immediately without undue oscillation.

high-quality optics, coated first-surface mir- As is typical m Torbal oprtical balances,rors, high illumination. minor changes in level do not change the

Easy-to-operate internal weight handling zero point. Long-lasting accuracy of theto achieve weighing by substitution with 100 Torsion construction has been proved by

gram increments to 1 kilogram. continuous weighings (over 1,750,000 oper-Long-lasting accuracy-rugged, thanks to ations) 24 hours a day for 6 months. Also

superior friction-free torsion-band weighing available in an explosion proof model.

THE TORSION BALANCE COMPANY Clifton, New Jersey. Sales offices inChicago, Ill.; San Mateo, Cal.; Pittsburgh, Pa.; Montreal, Quebec; and Windsor, England.Balances manufactured in Waterford, Ireland and Clifton, New Jersey. v

Circle No. 63 on Readers' Service Card

A new low-cost systemfor analyzing

experimental data on-lineUntil now, a life scientist could turnonly to very costly and complex signalaveragers or computers to obtain time-and amplitude-probability plots on line.Latency curves, dwell-time and inter-spike-interval distributions, analyses ofEEG, EKG, EMG, and respiration pat-terns-these functions could be had,but the cost was just too high.Now comes the new, modular

Ortec histogram analyzer. Consist-ing of a 128-address, 255-data-point memory module plus sep-arate mod.ules for time-or amplitude-probabil-ity input, the Ortec an-

alyzer does the jobs ofsystems costing threeto ten times its mod-est $2,300 price.*

Our Data Shee.+4620/21 contairs more t.-information.

See It working at FASEB,Circle No. 61 on

Write for a copy, or call us to discussyour application.

Ortec Incorporated, 110 MidlandRoad, Oak Ridge,.Tenn. 37830; phone(615) 482-4411. In Europe: Ortec Ltd.,Dallow Road, Luton, Bedfordshire,England; or Ortec GmbH, 8 Munchen13, Frankfurter Ring 81, W. Germany.

*U.S. and Canadian price, f.o.b.Oak Ridge; includes memory,

time-histogram input, bin andpower supply.

Booth P-115/116/117, West Hall 5257

Readers' Service Card

461

Perso-nn-el IPlacement

POSITION WANTED: 40¢ per word, mini-mum charge $10. Use of Box NumberCounts as 10 additional words. Paymentin advance is required. These rates applyto individuals only. Personnel agencies andcompanies take display rate for all adver-tising.

POSITIONS OPEN: $110 per inch. No chargefor Box Number. Rates not. No agencycommission allowed for ads under 4 inches.No cash discount. Ads over 1 inch will bebilled to the nearest half inch. Payment inadvance is required except where satis-factory credit has been established.

COPY for ads must reach SCIENCE 4 weeksbefore issue date (Friday of overy week).Send copy for Personnel Placement adver-tising to:

SCIENCE, Room 2111515 Massachusetts Ave., NW

Washington, D.C. 20005Replies to blind ads should be addressedas follows:

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

,11rdn POSITIONS WANTED I1j r POSITIONS OPEN POSITIONS OPENI I"nMammalian Physiologist. Ph.D. Teaching ex-perience in physiology, histology, and embryol-ogy. Research in cellular metabolism and re-newal systems in gastrointestinal system. Seeksteaching/research position in undergraduate/graduate department. Available September 1972.Dominic Castrignano, 1309 Orlowitz Building,1000 Walnut Street, Philadelphia, Pa. 19107. X

Molecular Biologist. Ph.D. (biophysics, 1968).Postdoctoral fellow (Yale). Genetics, biochemis-try, human biology, philosophy. Redirection ofself from research to teaching and writing. Box51, SCIENCE. 2/4

SpecaHlist in Scientific Instrumentation seeks re-search position; many papers on chemical, elec-tromedical, thermometric and electronic instru-ments; presently visiting associate professor.Box 33, SCIENCE. 1/28

PO ITIONS OPEN 11 III1Laguardia Community Colege, a new, innova-

tive branch of the City University of New York,is seeking to fill a number of positions inMATHEMATICS and the SCIENCES for Sep-tember 1972. Candidates will be expected to helpdevelop new programs. Applications are en-couraged from women and members of minoritygroups.

Interested, qualified individuals should send aresume together with the names of three refer-ences to:

Professor Michael HobanDivision of Natural EnvironmentLaguardia Community College31-10 Thomson AvenueLong Island City, New Vork 11101

BACTERIOLOGISTOpportunity for person to head bacterial vaccineresearch group for animal vaccine. Industrialvaccine development experience desired. Excellentlaboratory and equipment. Send resume to:J. J. Kuhn, Jr., Pitman-Moore, Inc., P.O. Box344, Washington Crossing, N.J. 08560.

An equal opportunity employer.

CARCINOGENSIS-VIROLOGY-IMMUNOLOGY

Meloy Laboratories, Inc., a research and de-velopment company in the fields of Life Sciences(etiology of cancer, molecular biology, biochem-istry) and Environmental Sciences, is expandingits research capability and has vacancies for pro-fessional and technical personnel in the followingdisciplines: Virology, Immunology, Cell Biology,and In Vitro Chemical Carcinogenesis.

Interested individuals should submit a curricu-lum vitae and salary requirement to:

Director of PersonnelMeloy Laboratories, Inc.6631 Iron PlaceSpringfield, Virginia 22151

M.D. OR Ph.D. CANCER BIOLOGIST withknowldge of latest cell kinetic techniques neededto join cancer immunological research group. Sal-ary negotiable depending upon qualifications.Reply with curriculum vitae to: S. Lesher, Ph.D.,Allegheny General Hospital, 320 East NorthAvenue, Pittsburgh, Pa. 15212.

AAAS AUDIOTAPES-ECOLOGYThe following tapes are available as 5-inch open reels (playing at 3¾/ inches

per second on any standard playback machine) or as cassettes. Single-sessionsymposium, $15 per session; multi-session, $15 for the first session, $12 foreach additional session of the same symposium.

10-69-Is There an Optimum Level of Population? (Sessions I-IV). Factorsinvolved (food, environmental quality, health services) with a growing popula-tion. S. Fred Singer (University of Virginia), Roger Revelle (Harvard), andothers.41-69-Power Generation and Environmental Change: Reconciling Man's

Desire for Power with the Needs of His Environment. Environmental effects ofthree primary means of generating power-nuclear, hydroelectric, and fuelcombustion-and what can be done to suppress or control them. Arthur M.Squires (City College of the City University of New York), David Berkowitz(MITRE Corp.), and others.73-70-Is Population Growth Responsible for the Environmental Crisis in

the United States? (One Session). Varied views on the need to take immediatesteps to halt the growth of U.S. population. George Wald (Harvard), BarryCommoner (Washington University), and others.

91-71-Indicators of Environmental Quality (Sessions I-IV). Attempts andpossibilities of establishing objective assessment of shifts in environmentalquality through the use of biological indicator species as monitors thereof.William A. Thomas (Oak Ridge Natiotnal Laboratory), Gordon J. F. Mac-Donald, and others.Use form below to order reels or cassettes. Money order or check payable toAAAS. Allow 3 to 4 weeks for delivery.Send to: Audiotape Program, American Association for

the Advancement of Science1515 Massachusetts Avenue, NWWashington, D.C. 20005

Name

Street

City State Zip

Encircle upe yess Wish to order. Please cb. Ik: lR l ._. Ca tte

10-69 1 II III IV41-69IX ^

73-70 191-71 I I III IV

Other tape o ecolgy are also available. Plase write to above adbs formore information.

462 -

A BIOLOGIST with broad entomological train-ing is required for university teaching and re-search. An interest in field methods of studyingnatural control processes is essential. A freshapproach to biological control problems (via agenetic route, for example) would be preferableto the more usual, stereotyped approach. Teach-ing responsibilities will include an undergraduatecourse in economic entomology, primarily forstudents in agriculture, and a more advancedcourse, possible on various aspects of biologicalcontrol. The appointment will carry the rank ofAssistant Professor, salary range $9,000 to $12,000,and should commence I July 1972. An applica-tion, with curriculum vitae and three letters ofreference, should be sent to The Director, Insti-tute of Animal Resource Ecology, The Universityof British Columbia, Vancouver 8, B.C., before30 April 1972.

Applications are invited for two positions inBIOLOGY from candidates in any of the fol-lowing: ecology, animal physiology, animal de-velopment, and embryology. The appointments,effective 1 July 1972, will be within the Assistantand Associate Professor ranks. Applications, in-cluding complete curriculum vitae and names ofthree referees, should be directed to:

Chairman, Life SciencesScarborough CollegeUniversity of TorontoWest Hill, OntarioCanada

IMMUNOCHEMISTPh.D. or equivalent in Immunology or Biochem-istry, with in-depth training in the field of im-munochemistry. Three to five years required inareas of serum fractionation, methods of con-centration, and inethods of serum analyses in-cluding electrophoresis and immunoelectrophoresis.Industrial experience with serum products highlydesirable. Send curriculum vitae with full particu-lars, including salary requirements to: PersonnelDepartment, Diamond Laboratories, P.O. Box863, Des Moines, Iowa 50304.

LITERATURE SEARCHERS - LIBRARIANTo create and operate a library for a newlyorganized reseatch group. Respond to Dr. John L.Hlckson, Executive Director, Cigar ResearchCouncil, Inc., 16th Floor, 245 Park Avenue, NewYork, New York 10017.

PulmonaryPharmacologist

Our expanding research programs havecreated an opening in the Department ofPharmacology for a recent doctoral levelgraduate or someone with several years ofpostdoctoral research experience in pulmo-nary physiology or pharmacology. Appli-cants should have a familiarity with cur-

rent techniques and instrumentation toconduct experimental pulmonary functionstudies for use in drug research. Trainingin immunology or immunopharmacologywould be desirable.

Syntex is an international research pharma-ceutical company located on the San Fran-cisco Peninsula.

Please send your resume to Mr. Karl0. McCalla, Employment Manager,Syntex Research, 3401 Hiliview Ave-nue, Palo Alto, California 94304. Weean an equal ioportaoWty-0

SYNTEK .

,, +c

1 4. In

I