NEW BOOKS

(Continuted from page 1632)

Stokinger, Edward C. J. Urban, HowardS. Van Ordstrand, Arthur J. Vorwald,and John F. Zielinski.

Catecholamines. Richard J. Wurtman.Little, Brown, Boston, 1966. 123 pp. Illus.$6.75. New England Journal of MedicineMedical Progress Series.The Cell: Chemistry and Function.

Roger H. Trumbore. Mosby, St. Louis,1966. 430 pp. Illus. $12.

Cell Synchrony: Studies in BiosyntheticRegulation. Ivan L. Cameron and GeorgeM. Padilla, Eds. Academic Press, NewYork, 1966. 408 pp. Illus. $15. Eighteenpapers.

Chemistry and Therapy of Peptic Ulcer.David C. H. Sun. Thomas, Springfield,1ll., 1966. 254 pp. Illus. $8.50.The Chemistry of the Antibiotics Used

in Medicine. R. M. Evans. Pergamon,New York, 1966. 236 pp. Illus. Paper,$6.50. The Commonwealth and Interna-tional Library.The Chlorophylls: Physical, Chemical,

and Biological Properties. Leo P. Vernonand Gilbert R. Seely, Eds. AcademicPress, New York, 1966. 695 pp. Illus.200s. Nineteen papers contributed by M.B. Allen, S. Aronoff, N. K. Boardman,Lawrence Bogorad, L. J. Boucher, War-ren L. Butler, Roderick K. Clayton, G.Cohen-Bazire, R. C. Dougherty, J. C.Goedheer, A. S. Holt, J. J. Katz, BaconKe, Walter Lwowski, John M. Olson,Roderic B. Park, G. R. Seely, W. R. Sis-trom, Elizabeth K. Stanton, Harold H.Strain, Walter A. Svec, and Leo P. Ver-non.The Corticovisceral Theory of the

Pathogenesis of Peptic Ulcer. K. M.Bykov and I. T. Kurtsin. Translated fromthe second Russian edition. Samuel A.Corson, Translation Ed. Pergamon, NewYork, 1966. 351 pp. Illus. $11. Interna-tional Series of Monographs on Cerebro-visceral and Behavioural Physiology andConditioned Reflexes, vol. 2.

Current Topics in Plant Nutrition.Arthur Wallace and others. The Author,Univ. of California, Los Angeles, 1966.232 pp. Illus.Drug Identification. A scheme for the

identification of organic chemicals usedin medicine and pharmacy. C. A. John-son and A. D. Thornton-Jones, Eds. Phar-maceutical Press, London, 1966. 143 pp.

35s.Enzyme Kinetics: Open and Closed

Systems. Charles Walter. Ronald, NewYork, 1966. 108 pp. Illus. $7.Enzymes in Food Processing. Gerald

Reed. Academic Press, New York, 1966.495 pp. Illus. $18.50. Food Science andTechnology Series.

Fortschritte der Zoologie. vol. 18. Ger-hard Czihak, Ed. Fischer, Stuttgart, Ger-many, 1966 (order from IntercontinentalMedical Book Corp., New York). 206pp. Illus. Paper, $12. Two papers: "Tier-geographie (Bericht iuber die Jahre 1957-1964)" by Gunther Niethammer and Hel-mut Kramer, and "Geschlechtsbestim-mung" by Lutz Wiese.Gas Chromatography in the Analysis of

Steroid Hormones. Herbert H. Wotiz and

30 SEPTEMBER 1966

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Stanley J. Clark. Plenum Press, NewYork, 1966. 304 pp. Illus. $12.50.

General Parasitology. V. A. Dogiel. Re-vised and enlarged by Yu. I. Polyanskiand E. M. Kheisin. Translated from thethird Russian edition (Leningrad, 1962)by Z. Kabata. Academic Press, NewYork, 1966. 526 pp. Illus. $16.50.

Histogenese der Pteridophyten. Her-mann von Guttenberg. Borntraeger, Ber-lin, 1966. 320 pp. Illus.Human Brain and Psychological Pro-

cesses. A. R. Luria. Translated from theRussian edition (1963) by Basil Haigh.Harper and Row. New York, 1966. 607pp. Illus. $14.50.

Index Bergeyana. An annotated alpha-betic listing of names of the taxa ofthe bacteria. Robert E. Buchanan, JohnG. Holt, and Erwin F. Lessel, Jr., Eds.Williams and Wilkins, Baltimore, 1966.1486 pp. $25. A companion volume toBergey's Mainal of Deterininiativ e Bac-teriology.

International Review of Research inMental Retardation. vol. 1. Norman R.Ellis, Ed. Academic Press, New York,1966. 320 pp. Illus. $10.50. Eight papers:"A functional analysis of retarded develop-ment" by Sidney W. Bijou; "Classicalconditioning and discrimination learningresearch with the mentally retarded" byLeonard E. Ross; "The structure of intel-lect in the mental retardate" by HarveyF. Dingman and C. Edward Meyers;"Research on personality structure in theretardate" by Edward Zigler; "Experienceand the development of adaptive behav-ior" by H. Carl Haywood and Jack T.Tapp; "A research program on the psy-chological effects of brain lesions in hu-man beings" by Ralph M. Reitan; "Long-term memory in mental retardation" byJohn M. Belmont; and "The behavior ofmoderately and severely retarded per-sons" by Joseph E. Spradlin and Fred-eric L. Girardeau.

Introduction to Environmental Physiol-ogy: Environmental Extremes and Mam-malian Survival. G. Edgar Folk, Jr. Leaand Febiger, Philadelphia, 1966. 308 pp.Illus. $12.An Introduction to General and Com-

parative Animal Physiology. Ernst Florey.Saunders. Philadelphia, 1966. 725 pp.Illus. $10.

Introduction to Genetics: Science ofHeredity. A. J. S. McMillan. Pergamon,New York, 1966. 221 pp. Illus. Paper,$4.95. The Commonwealth and Interna-tional Library.The Investigation of Psychotherapy:

Commentaries and Readings. Arnold P.Goldstein and Sanford J. Dean. Wiley,New York, 1966. 457 pp. Illus. $9.95.Sixty-three papers on the following topics:Research Philosophies (6 papers); Ethi-cal Issues (4 papers); Experimental De-sign (5 papers); Measurement (5 papers);Criterion Problems (6 papers); Spontane-ous Remission (6 papers); Time Dimen-sions (4 papers); Therapist Variables (6papers); Patient Variables (6 papers); Re-lationship Variables (5 papers); InterviewModels (5 papers); and Verbal Condi-tioninig Models (5 papers).

Laboratory Instructions in Biochemis-try. Israel S. Kleiner, Louis B. Dotti,and Isaac Neuwirth. Mosby, St. Louis,

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Limnologie: L'etude des eaux continen-tales. Bernard Dussart. Gatuthier-Villars,Paris, 1966. 700 pp. IlILIS.

Lucrarile Institutului de Cercetari Vet-erinare si Biopreparate "Pasteur". vol. 2,Nos. I and 2. Redactia Revistelor Agri-cole, BuLcuresti, Roumanie, 1965. No. 1,347 pp.; No. 2, 431 pp. Illus.Meat Science. R. A. Lawrie. Pergamon,

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and edited by the Association of Vita-min Chemists. Myer Freed, chairman.Methods Committee. Interscience (Wiley).New York, ed. 3, 1966. 442 pp. IlLs.Modes of Reproduction in Fishes.

Charles M. Breder, Jr.. and Donn EricRosen. Published for the American MuLse-um of Natural History. Natural HistoryPress, Garden City, N.Y., 1966. 957 pp.Illus. $17.50.

Molecules and Evolution. Thomas H.Jukes. Columbia Univ. Press, New York.1966. 295 pp. Illus. $8.50.Natural Nidality of Transmissible Dis-

eases: With Special Reference to the Land-scape Epidemiology of Zooanthroponoses.Evgeny N. Pavlovsky. Translated fromthe Russian edition (Moscow, 1964) byFrederick K. Plous, Jr. Norman D. Le-vine, Translation Ed. Univ. of IllinoisPress, Urbana, 1966. 275 pp. Illus. $8.

Neurosecretion. M. Gabe. Translaitedfrom the French by R. Crawford. Perga-mon. New York, 1966. 886 pp. Illus.$30. International Series of Monographsin Pure and Applied Biology.

Nutrition: A Comprehensive Treatise.vol. 3, Nitrtitionial Statlus: Assessm7enit anidApplicadtion. George H. Beaton and EarleWillard McHenry, Ed. Academic Press,New York, 1966. 367 pp. Illus. $15.Seven papers: "The nutrition and feedingof infants" by J. H. Ebbs; "The nutri-tion of children and adolescents" by Eliza-beth Chant Robertson; "Nutrition in preg-nancy and lactation'" by A. M. Thomsonand F. E. Hytten; "Nutrition and aging"by Donald M. Watkin: "Principles oftherapeutic diets" by W. T. W. Clarke;"Assessment of nutritional statuLs: Foodintake studies" by Arnold E. Schaefer:and "Assessment of nutritional statuS:Biochemical methods" by W. N. Pearson.The Organization of the Cochlear Re-

ceptor. H. Spoendlin. Karger, Basel,Switzerland, 1966 (available from Phiebig.White Plains, N.Y.). 231 pp. Illus. $14.80.Advances in Oto-Rhino-Laryngology, vol.13.The Psychology of Set. Dmitrii Niko-

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QUICKQUIZ

FORSAPIENT SCIENTISTS

Which of the- following statements is derived fromBradford's Law of Scattering?

a. Particles scatter at a faster rate in a vacuum than underpressure.

b. A small number of journals accounts for a major percent-age of the articles published in a specific field of science.,

c. 10% of the world's scientists write 50% of the paperspublished.

d. The circulation of a journal devoted to a particular disci-pline varies inversely with an ascendant curve of expiringsubscriptions.

An "impact factor" for a specific journal may be esti-mated by:

a. Dividing the number of times it is cited by the numberof articles published in that journal.

b. Counting the footnotes and references in that journal.c. Dividing the references it cites by the number of items

published in that journal.d. Multiplying the total number of pages by 8% of the totalnumber of authors published by that journal in a givenyear.

ISi Quiz Number Three'

3 50% of the 300,000 currentitems published in the 1,500 journalsindexed annually by the SCIENCECITATION INDEX are contained in:

a. 50 journalsb. 200 journalsc. 450 journalsd. 900 journals;

ANSWERS: 1-b, 2-a, 3-b.

Supporting data available upon request.Write Department 29-14.

This quiz is sponsored by ISI, creators andproducers of modern scientific information ser-vices used by thousands of scientists throughoutthe world.

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I Personnel IPlacementI

IIIIIIIiIIDIIII POSITIONS WANTEDBiochemist, age 40, 14 years experience in re-search, teaching and administration, professorand head of department of former British Colony,holder of U.S. and foreign grants. Seeks positionin university or research institute. Box 193,SCIENCE. X

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30 SEPTEMBER 1966

Botany PhD. 29, postdoctoral training in tissueculture, morphology, expermental embryology. Tenpapers. Seeks suitable position postdoctoral re-search. Box 198, SCIENCE. X

Clinical Chemist, Ph.D., 1959, postdoctoral re-search, clinical chemistry general hospital, 5years. Desires position as clinical chemist inuniversity-affiliated hospital with research opportunity. Box 200, SCIENCE. X

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SCIENCE EDITORTo edit, help revise, and occasionally rewritejournal article manuscripts, monographs, etc., andto help publish a Technical Notes series. Thisposition may also involve some semi-popular sci-ence writing. We will consider both trainees andseasoned editors, but applicants must have somebackground in physical science, plus highly devel-oped English language skills. We are a non-profitbasic research organization, supported by the Na-tional Science Foundation, devoted to advance-ment of some of the most challenging areas inthe atmospheric sciences. Write Personnel De-partment, National Center for Atmospheric Re-search, Boulder, Colorado 80302. An EqualOpportunity Employer.

POSITIONS WANTED lIKENiiinl POSITIONS OPEN OPosition Open:Manufacturer's representativewanted to handle dealer sales forfinest line of disposable PetriDishes.

Box 204, SCIENCECLASSIFIED: Positions Wanted. 25¢ perword, minimum charge $4. Use of BoxNumber counts as 10 additional words.Payment in advance is required. Sendcopy for position wanted ads to:

SCIENCE1515 Massachusetts Ave., NWWashington, D.C. 20005

COPY for ads must reach SCIENCE 2 weeksbefore issue date (Friday of every week).

DISPLAY: Positions Open. Rates listed be-low-no charge for Box Number. Ratesnet. No agency commission allowed forads under 4 inches. No cash discount.Minimum ad: 1 inch. Ads over 1 inchwill be billed to the nearest quarterinch. Frequency rate will apply only torepeat of same ad. No copy changes.Payment in advance is required exceptwhere satisfactory credit has been es-tablished. Send copy for display adver-tising to:

SCIENCERoom 1740

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Single insertion $75.00 per inch4 times in 1 year 70.00 per inch

For PROOFS on display ads, copy mustreach SCIENCE 4 weeks before date ofissue (Friday of every week).

Replies to blind ads should be addressedas follows:

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

SCIENTISTSPhysicists, mathematicians, chemists, re-search engineers, statisticians, operations re-search analysts, systems analysts-above all,researchers who can apply the scientificmethod in new contexts, no matter whattheir discipline-will find rewarding work atthe Center for Naval Analyses of TheFranklin Institute.CNA engages- in operations research andsystems analysis for the U.S. Navy andMarine Corps. Good salary, fringe benefits,stimulating environment, research opportuni-ties. See the results of your work in ac-tion . . . establish yourself in a permanentcareer . . . perform a vital defense function.For an interview, send letter with resume to:James S. HibargerCENTER FOR NAVAL ANALYSES1401 Wilson Blvd., Arlington, Va. 22209

An equal opportunity employer

NEUROPHYSIOLOGST /NEUROPHARMACOLOGISTA challenging research opportunity for a PhD(or equivalent) with appropriate training and ex-perience to supervise studies on the electrophysi.ologleal processes underlying the actions of drugson the CNS. Specialized training In computertechniques is desirable but not essential.

BIOCHEMISTSeeking a PhD with 5 to 10 years laboratory ex-perience In Biochemistry and a desire to partici.pate in planning and supervising research In.vestigatlons. Duties will involve eondueting andevaluating a basic and applied program involvingbiochemical approaches to the Inflammatory proc-ess. Salary commensurate with experience.

ENDOCRINOLOGISTPosition requires a PhD with formal training InEndocrine Physiology and Interest In the blo-chemistry of endocrine functions. Duties will In.volve supervisino a group of 2 to 3 junior sc.ientists in desioning, direeting and evaluating afundamental research effort In several aspects efthe endocrine system and engaging In some prod.uet development.Eaeh of the above positions earries a liberal Sal-ary and benefit program. Please send resume to:

CYRUS M. GREENBERG, PhDDirector of Scientific Employment.Smith Kline & French. Labs

1514 Spring Garden StreetPhiladelphia, Pa., 19101

An Equal Opportunity Employer

RESEARCHVIROLOGIST

Ph.D. Recent graduate or with ex-

perience. Background and interestsin viral diseases. Medical Micro-biologist can qualify. Biochemicalbackground desirable. Graduatestudents expecting degrees in nearfuture will be considered. Inter-ested persons write to:

MR. GORDON L. GERHARD,Supervisor,Professional Employment

Merck Sharp & Dohme013 Research Laboratories

West Point, Pa.

An Equal Opportunity Employer

1687

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I

THE WORLD HEALTH ORGANIZATIONinvites applications for a post of

SCIENTISTin the Cardiovascular Disease Unit,Headquarters, Geneva.

Applicants must be qualified in science,physiology, biology or biochemistryand should have personal experience inresearch work, in the administrationof research and the critical appraisal ofscientific information.

Person required with excellentknowledge of English; knowledge ofFrench in addition desirable.

Conditions: Initial two-year contractwith one year probationary period;starting salary equivalent of US $7,287rising by annual increments to US$9,505. Cost of living adjustment, de-pendents' allowance and children's edu-cation grant, health scheme, pensionfund, paid home leave every two years.

Detailed curriculum vitae should besent to Chief, Personnel, WHO, Ge-neva, before 15 September 1966. Ap-plicants who do not hear from WHOshould assume that they have not beenshort listed for the post.

EII|IIIIIIIHBIIIBBIII|||||POSITIONS OPEN iIIIHIIHBHIHBHBH| | ||||||||||||||||| POSITIONS OPEN IIHIHH|

ICHTHYOLOGIST or FISHERIES BIOLOGIST

Ph.D. to teach graduate courses in ichthyologyand fisheries biology. Excellent location forresearch. Write: Chairman, Graduate Depart-ment of Marine Science, Long Island University,C. W. Post Campus, Greenvale, New York,11548.

POSITION AVAILABLEUniversity of Toronto, Department of Botany.Experimental Ecologist or Limnologist. Salaryand rank commensurate with experience andreputation. Please apply to Professor N. P.Badenhuizen, Department of Botany, Uni-versity of Toronto, Toronto 5, Ontario, Can-ada.

RESEARCH ASSISTANTActive Neurosurgical Laboratory in Philadel-phia, Pennsylvania, needs ambitious youngman or woman capable of independent re-search to carry on projects in IntracranialDynamics, Cerebrovascular Physiology, andNeurophysiology. Exact salary and positiondependent on ambition and diligency. Sendresume to Box 206, SCIENCE.

Technical Service

RepresentativeFood Technologist PhD

A challenging career opportunity exists for an experiencedPhD in Food Technology, with a background in either humannutrition, biochemistry, or pharmacology. Will be responsiblefor technical service problems relating to the use and appli-cation of company products in the beverage, meat, margarinecereal and baking Industries.

The ideal candidate should have a strong background in thebiological sciences and experience in commercial environmentsolving problems, relating to production and development ofcustomer products. Prior research experience is necessaryalthough this is not a research position. Some product develop-ment experience would be helpful. Approximately 30% travelis required.

Roche is a leader in the drug and chemical industry. We areconveniently located in suburban North Jersey and have acomprehensive benefits program. Salary and growth potentialare excellent.

Please submit resume to:MR. R. M. CALLAN, EMPLOYMENT MANAGER

d:HJ HOFFMANN-LAROCHE INC.

g MNutley, New Jersey 07110An Equal Opportunity Employer

YALE-COLUMBIA SOUTHERN OBSERVATOFnear San Juan, Argentina, has a vacancy for a

RESIDENT DIRECTORstarting stimmer of 1967. Duties consist of supedaily affairs of the Observatory and observing wit20-inch astrograph. Further astrophysical instrare being planned. Experience in astronomical photoessential. Ph.D. preferred but not essential. Initipointnsent for two years. Residence provided free.to six nsonths paid leave after two years. For applior infornsation write Prof. L. Woltjer, Chairmampartment of Astronomy, Columbia University, NewN.Y. 10027.

WANTED: CLINICAL CHEMISTCHEMICAL MICROBIOLOGIST (BINATION WITH AT LEAST ANfor large reference clinical laboratoSouthwest. Top salary, profit sharingpital and life insurance. Send resume.

Box 207, SCIENCE

WANTED:Duboscq Colorimeter made by E.Inc. 1915-1925. State particulars.

Write: Centennial Centre of Sciand Technology, 8 Prince AntPlace, Don Mills, Ontario, Canaq

I

The Market PlaBOOKS * SERVICES * SUPPLIES * EQUII

j11j11j11 SUPPLIES AND EQUIPMEN'

SPRAGUE-DAWLEY, INC.Pioneers in the development of the

STANDARD LABORATORY RAT.

P.O. Box 4220Madison, Wisconsin

CE 3-5318

BEAGLESFrom 6 Weeks to 6 Monti

Relatively Uniform 14 Inch St!WHITNEY LABORATORY

Oakwood Road, Orange, Conn. 064;

EIIIIIHIHIII PROFESSIONAL SERVICES

HISTOLOGY SERVICIRAPID SERVICE Large Orders Quicklyessed! Quickly Shipped! Professional ssion of every order. Free estimates on

problems. Distant points serviced swiftl)cial stains and techniques available. Fultected shipments. HISTOLOGY SERVICE4801 N. Broad St., Philadelphia, Pa. Z

19141, (215) DAvenport 4-5800

1688

Assistant Professor of Ceramic Science-Ph.D. or equivalent with background inphysics, eng. phys., eng. science, eng.mechs. or metallurgy to teach and do re-search in "physical ceramics," particularlymech. prop. of non-metallics. Excellentopportunity at Pa. State Univ. Write F. A.Hummel, Mineral Industries Bldg., Uni-versity Park, Pa. i

SCIENCE, V(

Recent AAAS Symposium Volumes# 82. Civil Defense

1966. 154 pages, paper. Editor: Henry Eyring. Scientistsreport their findings on problems related to modernwarfare and passive civil defense systems.

Price: $4.00. AAAS Member's Cashi Price: $3.50.

#81. Environmental Variables in Oral Disease1966. 328 pages. Editors: S. J. Kreshover, F. J. Mc-Clure. Contents: Geographical and clinical considera-tions; the oral environment-nutrition and dental caries;experimental considerations in oral soft lesions; pre-natally occurring influences.

Price: $8.75. AAAS Memiiber's Caslh Price: $7.75.

#80. Air Conservation1965. 348 pages. "The result of a 2-year study by theAAAS Air Conservation Commission, all aspects-socio-logical, technical, political and biological-of air pollu-tion are considered concisely." (Clhemical Processin,gfor Operatinig Mantagemenit, May 1966)

Price: $8.00. AAAS Member's Cash Price: $7.00.

#79. Science in Japan1965. 496 pages. Editor: Arthur H. Livermore. A broadand detailed review of recent scientific and technologicaldevelopments in Japan.

Price: $13.00. A,4AS Member's Casl Price: $11.00.

#78. Man, Culture, and Animals1965. 304 pages. Editors: Anthony Leeds and AndrewP. Vayda. "This volume contains articles pertaining tothe relationship between man and animals in differentparts of the world, covering the influence of domesti-cated and non-domesticated animals on a variety ofcultures." (Biological Abstralcts, 1 February 1966)

Price: $8.00. AAAS Memiber's CashI Pr-ice: $7.00.

#77. Food Quality1965. 30)6 pages. Editors: George W. Irving, Jr., andSam R. Hoover. "It is an excellent, well-edited reviewof the agronomical production and processing problemsof the basic commodities, fruits and vegetables, cereals,dairy products, poultry and eggs, and meat products."(Cereal Science TodaV, November 1965)

Price: $8.50. AAAS Memrber 's Cashi Price: $7.50.

#76. Agricultural Sciences for the Developing Nations1964. 230 pages. Editor: Albert H. Moseman. "Thebook . is especially useful because of the author'scombined experience with the situations and problemsof agricultLure in the less developed countries.... Thisbook will be a valuiable reference for many years."(BioScience, March 1966)

Price: $6.75. AAAS Memtiber's Cashi Price: $6.00.

#75. Mechanisins of Hard Tissue Destruction1963. 776 pages, 430 illustrations. Editor: R. F.Sognnaes. "Scientists in the fields of dentistry, medicine,and zoology presented a multidisciplinary symposiumin 1962, dealing with varied but cognate topics suchas coral reefs, dental caries, deer antlers, osteoclasticdiseases, bone metabolism, chelation. It is a refreshinglywell-planned, well-edited, and interesting symposium."(Journa(il of the Amiiericani Medical Associationi, July1964)

Price: $13.00. AAAS Memniber's Casli Price: $11.00.

#74. Aridity and Man1963; 2nd printing, 1965. 604 pages, 98 illustrations.Editors: Carle Hodge and Peter C. Duisberg. "Best col-lection of background material . . well balanced andhighly readable . . probably the broadest and mostnearly complete treatment of arid lands yet published."(Joiurnial of Forestry, May 1964)

Price: $12.00. AAAS Member's Caslh Price: $10.00.

# 72. Spermatozoan Motility1962. 322 pages, 113 illustrations. Editor: David W.Bishop. "This book is an excellent assemblage of recentfindings and reports of new data relative to the perplex-ing problem of sperm motility and includes the opinionsand ideas of cytologists, biophysicists, biochemists andphysiologists." (Journal of Animal Sciences, March 1963)

Pr-ice: $7.50. AAAS Member's Cashl Price: $6.50.

#71. Great Lakes Basin1962. 320 pages, 92 illustrations. Editor: Howard J.Pincus. "It is difficult to do justice to all the topicscovered in a book as rich as this one in content, inter-pretation, and discussion. . Highly recommended toscientist and layman alike." (Tranisactions, Amer. Geo-physical Union, December 1963)

Price: $7.50. AAAS Member's Caslh Price: $6.50.

#70. Fundamentals of Keratinization1962 202 pages, 136 illustrations. Editors: E. 0.BLitcher and R. F. Sognnaes. "This book . . makes fas-cinating reading for all clinicians and research workersinterested in keratinising tissues" (Britislh Denital Jouir-nal, 15 January 1963)

Price: $6.50. AAAS Memtiber's Casl Price: $5.75.

#67. Oceanography1961; 4th printing, 1966. 665 pages, 146 illustrations.Editor: Mary Sears. "Oceanographly is a milestone inoceanographic advance, a worthy publication to comeout of the first international congress of its kind."(Geographical Review, Vol. 52, No. 3)

Price: $14.75. AAAS Meomber's Caslh Price: $12.50.

British Ageuzs: Bailey Bros. & Swinfen, Ltd., Warner House 48 Upper Thames Street, London, E.C.4Clip out this Form. Fill in and Mail Today

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