big performance-sma-llscience.sciencemag.org/content/sci/136/3518/local/front-matter.pdf · since...

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BIG PERFORMANCE-SMA-LL SIZE I Varian's new series V-3400 Magnet Systems outperform magnets three times their physical size. Compare these high performance features: FIELD INTENSITY: Fields up to 40 kg with a Y4" air gap, using the solid state, continuously adjustable 7 Kw power supply. FIELD UNIFORMITY: Varian specialists with unmatched know-how will tailor air gap geometry to maximize uniformity for your specific application. FIELD STABILITY: Fully interlocked, water-cooled power supply regulates current within 10 ppm for a 10% line-voltage change. FIELD ACCESSABILITY: The wide choice of stands, bases, and yoke orientations provides unsurpassed flexibility of air gap location. In addition to big performance, Varian's 9" Magnet System is attractively priced. Fully interchangeable components and accessories allow you to select the exact magnet system to meet your special needs. Interested? A descriptive technical bulletin is available. Write the INSTRUMENT DIVISION, Magnet Product Group or call collect DAvenport 6-4000, Ext. 2736. VARIAN assooiates PALO ALTO 18, CALIFORNIA

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Page 1: BIG PERFORMANCE-SMA-LLscience.sciencemag.org/content/sci/136/3518/local/front-matter.pdf · Since such procedures only become available as sciences develop, the text deals with progress

BIG PERFORMANCE-SMA-LL SIZE I

Varian's new series V-3400 Magnet Systems outperform magnets three times their physical size. Comparethese high performance features:FIELD INTENSITY: Fields up to 40 kg with a Y4" air gap, using the solid state, continuously adjustable 7 Kwpower supply. FIELD UNIFORMITY: Varian specialists with unmatched know-how will tailor air gap geometryto maximize uniformity for your specific application. FIELD STABILITY: Fully interlocked, water-cooled powersupply regulates current within 10 ppm for a 10% line-voltage change. FIELD ACCESSABILITY: The wide choiceof stands, bases, and yoke orientations provides unsurpassed flexibility of air gap location.In addition to big performance, Varian's 9" Magnet System is attractively priced. Fully interchangeablecomponents and accessories allow you to select the exact magnet system to meet your special needs.Interested? A descriptive technical bulletin is available. Write the INSTRUMENT DIVISION, Magnet ProductGroup or call collect DAvenport 6-4000, Ext. 2736.

VARIAN assooiatesPALO ALTO 18, CALIFORNIA

Page 2: BIG PERFORMANCE-SMA-LLscience.sciencemag.org/content/sci/136/3518/local/front-matter.pdf · Since such procedures only become available as sciences develop, the text deals with progress

256 channels* 400 channels * 4096 channels

pulse analyzers from TMCWhatever the pulse analyzer requirement - versatility,compactness, economy, large capacity- there is now a

TMC analyzer to meet that requirement.VERSATILE 256-channel CN-110 with choice of seven

interchangeable logic plug-ins, transistorized circuits.

COMPACT 400-channel,36-pound 400 series pulse heightanalyzers.LARGE CAPACITY 4096-channel CN-440 time-of-flightanalyzer.Details of each analyzer series are listed below.

The 400-channel "400 Series" Pulse HeightAnalyzers occupy little over a cubic foot ofspace and weigh just 36 lbs. All circuits are

board-mounted and easily accessible from thesides. The Mlodel 404 is a four-input unit;Model 401 is an economical single input version.Both have low level linear amplifiers . . . mem-

ory grouping of 4 groups (100 channels each) 2groups (200 each) and 1 group ... automatic ormanual data transfer from half to half and evenquarter to quarter within one half. 400 seriesanalyzers can also be used in multiscaler oper-ation. Specifications such as average dead timeof 60 psec, and Y channel per day stabilityare typical.

Model 510 Typewriter Drive Unit ACCESSORIES:

Model 500 Paper Tape Printer; Model 510Typewriter Drive Unit. Model 530 IBM

Computer Typewriter; Model 550 Paper

Tape Reader plus various readout control

units. Also, auxiliary equipment such asthe Model 561 Visual Readout Indicator;

Model 500 Model 566 5' Oscilloscope Display Unit;Paper Tape Printer X-Y plotters, null detectors, and char-

acter printers are all available as 400series accessories.

Model 530 Computer Typewriter Model 561 Visual Readout Indicator

_~m The CN-440 4096-channel_00- _ _ m _ _ r nII _ l_ I- A ____Time-of-flight Analyzer. Chan-

nels can be arranged in 16 groupsof 256, each group with its ownamplifier and integral discrimi-nator. Memory cycle time fixedat 16 ,sec... readout is by CRTdisplay and punched tape builtinto the system as well as byauxiliary card punch, typewriter,printer and magnetic tape units.

The CN-110 - a 256-channel, all - transistor,digital computer with CRT display and switch-selected binary, decimal and analog readout.Simply change one logic unit for another of theseven interchangeable plug-ins and you changethe system - in seconds. Types of logicavailable:

PULSE HEIGHT ANALYZER (Q210) - built-in linear ampli-fier ... coincidence gating ... 5 x 104 cps ... 42 Asec. ave.dead time.

TIME-OF-FLIGHT ANALYZER (#211) 9 channel widths-

i i0.25to 64 ,usec.... dead time 16 jsec ... 4 switch-selected

f types of delay.

PULSE HEIGHT ANALYZER (#213) 4 inputs ... coinc./anti- tcoinc. gating . . . 42,usec. ave. dead time.

COINCIDENCE PAIR SPECTROMETER (#216) - 2 dimen-

sional (16 x 16) analyses ... dead time fixed, 100 usec.

PULSED NEUTRON; MASS SPECTROMETER and MULTI-

SCALER units are also available.

Model 220 Data Output Unit

,0.f.f:fffff, ff-0S : .00 fS7 7.7. j.

ACCESSORI ES:The Model 200 Data Output Unit han-dles digital output, serves as a live timer,true timer and analysis cycle counter.Model 221 Magnetic Tape Buffer StorageUnit provides high-speed storage ofdataforlaterplayback. Model8276 BinaryInformation Indicator for visual indicationof address and arithmetic information.Compatible Hewlett-Packard printer,Monroe Data-Log paper taper printersand tape printer and punch combinationsare also available.

Model 221 Magnetic Tape Buffer Storage Unit

7,jj:@ For complete system data, write for technical bulletins.

TECHNICAL MEASUREMENT CORPORATION441 WASHINGTON AVENUE, NORTH HAVEN, CONNECTICUT

Field Offices: Boston, Dallas, Denver, Los Angeles, San Francisco.

SCIENCE, VOL. 136

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loss, because the corrections have notbeen subjected to experimental valida-tion.

If there is any criticism to be madeof this book it is that, in many places,the reading is heavy. For this reason,the book may not be suitable for a first-year graduate course unless the studentshave had extensive preliminary studyof thermodynamics and statisticalmechanics.

GEORGE WEISSUniversity of Maryland

Practical Science

A Short History of Clinical Pathology.W. D. Foster. Livingstone, London;Williams and Wilkins, Baltimore,Md., 1961. xii + 154 pp. Plates.$6.50.

Clinical pathology is the applicationof certain basic techniques of medicalscience to the diagnosis and treatmentof disease. Since such procedures onlybecome available as sciences develop,the text deals with progress in the re-

lated sciences; this attractively-bound,well-illustrated book is, therefore, an

account of scientific advances in micro-scopic anatomy, physiology, pathology,microbiology, serology, and chemistry-the disciplines upon which clinicalpathology rests and also the ones whichhave made possible its development.From crude visual inspection of a urinespecimen to modern urinalysis is a

great step forward, one that contributesimmensely to medical diagnosis andtreatment. Clinicians once resisted theintroduction of laboratories into prac-

tice. That laboratories are now a mustin practice and in hospital care is a

measure of our progress. The clinicalpathologist is, if medically qualified, a

full member of the clinical team.The book is unique in that it deals

with the development of a sciencewhich is itself half a dozen sciences.Because its author is British, the bookis slanted to British history and prob-lems, but it deals fairly with advancesmade elsewhere. It is well written andthrows light on our basic medical sci-ences from a point of view rarely ex-

ploited, making it valuable reading forscientists who are not practicing clini-cal pathologists as well as for thosewho are.

LELAND W. PARRDepartment of Microbiology,George Washington University

772

New Books

Biological and Medical SciencesAdvances in Pharmacology. vol. 1. Silvio

Garattini and Parkhurst A. Shore, Eds.,Academic Press, New York, 1962. 485pp. $13.

Advances in Small Animal Practice. vol.3. Proceedings of the British Small Ani-mal Veterinary Association, 1961. BruceV. Jones, Ed. Pergamon, New York, 1962.208 pp. Plates. $10.Animal Agents and Vectors of Human

Disease. Ernest Carroll Faust, Paul ChesterBeaver, Rodney Clifton Jung. Lea andFebiger, Philadelphia, ed. 2, 1962. 485 pp.Illus. $9.50.

Animal Tissue Techniques. Gretchen L.Humason. Freeman, San Francisco, Calif.,1962. 473 pp. Illus. $8.Annual Review of Pharmacology. vol.

2. Windsor C. Cutting, Ed. Annual Re-views, Palo Alto, Calif., 1962. 484 pp.Illus. $7.

Anxiety. A condition of modern man.Heiri Steiner and Jean Gebser. Dell, NewYork, 1962. 120 pp. Illus. Paper, $0.95.

Atoll Environment and Ecology. HeroldJ. Wiens. Yale Univ. Press, New Haven,Conn., 1962. 554 pp. Illus. Plates. $15.

Basic Facts of Medical Microbiology.Stewart M. Brooks. Saunders, Philadel-phia, ed. 2, 1962. 335 pp. Illus. $5.

Biochemical Applications of GasChromatography. H. P. Burchfield andEleanor E. Storrs. Academic Press, NewYork, 1962. 698 pp. Illus. $22.The Biochemistry of Intracellular Par-

asitism. James W. Moulder. Univ. ofChicago Press, Chicago, Ill., 1962. 187pp. $6.

Biophysical Science. Eugene Ackerman.Prentice-Hall, Englewood Cliffs, N.J.,1962. 640 pp. Illus. Trade ed., $13.35;text ed., $10.

Calciphylaxis. Hans Selye. Univ. ofChicago Press, Chicago, Ill., 1962. 573pp. Illus. $25.

Carbohydrates of Living Tissues. M.Stacey and S. A. Barker. Van Nostrand,Princeton, N.J., 1962. 232 pp. Illus. $7.50.

Cellular Physiology and Biochemistry.William D. McElroy. Prentice-Hall, Engle-wood Cliffs, N.J., 1961. 127 pp. Illus.

Cilia, Ciliated Epithelium and CiliaryActivity. vol. 15, International Series ofMonographs on Pure and Applied Biology:Modern Trends in Physiological Sciences.Jose A. Rivera. Pergamon, New York,1962. 178 pp. Illus. Plates. $9.50.Crop Adaptation and Distribution. Car-

roll P. Wilsie. Freeman, San Francisco,Calif., 1962. 456 pp. Illus. $9.

Czechoslovakian Medical Literature,1959. Compiled by the National MedicalLibrary, Prague. State Health PublishingHouse, Prague, Czechoslovakia, 1961. 284pp. Paper.

Dictionary of Ecology. Herbert C. Han-son. Philosophical Library, New York,1962. 382 pp. $10.Elements of Biophysics. James E. Ran-

dall. Year Book Medical Publishers, Chi-cago, Ill., ed. 2, 1962. 339 pp. Illus. $8.75.

Etude des Antigenes de Transplantation.Presents dans les Cellules Spleniques etThymiques. Andre Castermans. Arscia,Brusselles, Belgium; Maloine, Paris, 1962.275 pp. Illus.

Experimental Embryology. Techniquesand procedures. Roberts Rugh. Burgess,Minneapolis, Minn., ed. 3, 1962. 510 pp.Illus. $9.25.

Field and Laboratory Guide for Ecol-ogy. Paul C. Lemon. Burgess, Minneapolis,Minn., 1962. 186 pp. Illus. $5.

Genetics. Robert C. King. Oxford Univ.Press, New York, 1962. 363 pp. Illus.$7.50.The Ideas of Biology. John Tyler Bon-

ner. Harper, New York, 1962. 191 pp.Illus. $4.95.

Information and Communication in Bi-ological Science. Lowell H. Hattery (Pre-pared for the Biological Sciences Com-munication Project, American Institute ofBiological Sciences). Center for Tech-nology and Administration, AmericanUniversity, Washington, D.C., 1961. 99pp. Paper $0.25.

Integrated Basic Science. Stewart M.Brooks. Mosby, St. Louis, Mo., 1962. 507pp. Illus. $7.85.

International Review of Cytology. vol.12. G. H. Bourne and J. F. Danielli, Eds.Academic Press, New York, 1961. 433pp. Illus. $15.

Laboratory Instructions in Biochemistry.Israel S. Kleiner and Louis B. Dotti.Mosby, St. Louis, Mo., ed. 6, 1962. 202pp. Illus. Paper, $3.95.

Laboratory Outline for General Zool-ogy. George Edwin Potter, Mosby, St.Louis, Mo., ed. 5, 1962. 356 pp. Illus.Paper, $4.

Microbial Classification. 12th symposiumof the Society for General Microbiology,Royal Institution, London, 1962. G. C.Ainsworth and P. H. A. Sneath, Eds. Cam-bridge Univ. Press, New York, 1962. 492pp. Illus. $9.50.

The Nature of Parasitism. The relation-ship of some Metazoan parasites to theirhosts. W. P. Rogers. Academic Press, NewYork, 1962. 296 pp. Illus. $7.50.

The Photosynthesis of Carbon Com-pounds. Melvin Calvin and J. A. Bassham.Benjamin, New York, 1962. 139 pp. Illus.$5.50.

Plants. A photographic study. AddisonE. Lee and Charles Heimsch. Holt, Rine-hart, and Winston, New York, 1962. 68pp. Illus. Paper, $1.50.

Progress in Hematology. vol. 3. LeandroM. Tocantins, Ed. Grune and Stratton,New York, 1962. 383 pp. Illus. $16.50.

Regional Silviculture of the UnitedStates. John W. Barrett, Ed. Ronald, NewYork, 1962. 617 pp. Illus. $12.

Response of the Nervous System toIonizing Radiation. Proceedings of an in-ternational symposium held at North-western University Medical School, Chi-cago, Ill., September 1960. Thomas J.Haley and Ray S. Snider, Eds. AcademicPress, New York, 1962. 800 pp. Illus.$18.

Selected Experiments in Medical Micro-biology. Stewart M. Brooks. Saunders,Philadelphia, ed. 2, 1962. 103 pp. Illus.Paper, $2. Laboratory Manual for BasicFacts of Medical Microbiology.

Tissue Transplantation. Proceedings ofan international syposium held at Santiago,Vina del Mar, and Valparaiso, Chile,1961. Alberto P. Cristoffanini and GustavoHoecker, Eds. Univ. of Chile, Santiago,Chile, 1962. 269 pp. Illus. Plates.

SCIENCE, VOL. 136

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MeetingsForthcoming Events

June

25-30. Electromagnetic Theory and An-tennas, symp., Copenhagen, Denmark.(Symp. Secretary, 0ster Voldgade lOG,Copenhagen K.)

25-20 July. National Science Founda-tion, Summer Conf. for College Teachersof the History of Mathematics, AnnArbor, Mich. (P. S. Jones, Dept. of Mathe-matics, Univ. of Michigan, Ann Arbor)

26-28. American Assoc. of PhysicsTeachers, Northfield, Minn. (R. P. Winch,Dept. of Physics, Williams College, Wil-liamstown, Mass.)

26-28. American Meteorological Soc.,general meeting, Fairbanks, Alaska. (J. E.Miller, Dept. of Meteorology and Ocean-ography, New York Univ., UniversityHeights, New York 53)

26-29. American Home Economics As-soc., Miami Beach, Fla. (D. S. Miller,3705 Van Buren Ave., Corvallis, Ore.)

26-29. Poultry Science Assoc., Urbana,Ill. (C. B. Ryan, Texas A & M College,College Station)

26-30. Rarefied Gas Dynamics, intern.symp., Paris, France. (L. Talbot, Dept. ofAeronautical Sciences, Univ. of California,Berkeley)

26-4. German Chemical Engineering

Congr. and Exposition, Frankfurt amMain. (J. J. Doheny, American ChemicalSoc., 86 E. Randolph St., Chicago 1, Ill.)

27-28. Computers and Data Processing,symp. annual, Estes Park, Colo. (W. H.Eichelberger, Denver Research Inst., Univ.of Denver, Denver 10, Colo.)

27-30. Society of Nuclear Medicine,annual, Dallas, Tex. (S. N. Turiel, SNM,430 N. Michigan Ave., Chicago 11, Ill.)

28-29. Radio Frequency Interference,natl. symp., San Francisco, Calif. (R. G.Davis, Dept. 58-25, Lockheed Missile &Space Co., P.O. Box 504, Sunnyvale,Calif.)

28-30. Joint Automatic Control Conf.,annual, New York, N.Y. (A. S. Robinson,Kollsman Instrument Corp., 80-08 45thAve., Elmhurst 73, N.Y.)

28-30. Secondary Fungus Infections,intern. conf., Durham, N.C. (E. W. Chick,Veterans Administration Hospital, Dur-ham)

30-7. International Conf. on Healthand Health Education, Philadelphia, Pa.(Conf. Secretariat, ICHHE, 800 SecondAve., New York 17)

July

1-4. European Chest Surgery Congr.,annual, Stockholm, Sweden. (C. Crafoord,Karolinska Institutet, Stockholm 60)

1-4. European Soc. of CardiovascularSurgery, Stockholm, Sweden. (G. Arnuff,1, pl. Gailleton, Lyons, France)

1-4. Oral Surgery, intern. conf., Lon-

microscopic slide labeling!

* No licking Eliminate such* Accepts any marking.Accptsny makingas HEPATITIS. Keep your hands* Meets all legal requirements asaTII.Keyourm hads

* Prevents loss and confusion fo*oPreasyto alyssandconfusion self-sticking TIME Scope labels.

* Dependoble adherence Available in standard "Tis-

ajedbe for detied sue-high" thickness. 1,000Write for deta;led labels per carton.

PROFESSIONAL TAPE CO., INC.365R Burlington Ave. Riverside, Ill.

784

don, England. (D. C. Trexler, AmericanSoc. of Oral Surgeons, 840 N. Lake ShoreDr., Chicago 11, Ill.)

1-5. Operational Research, intern. conf.,Oslo, Norway. (Sir A. Goodeve, Inter-national Federation of Operational Re-search Societies, 11 Park Lane, London.W. I, England}

1-7. Rehabilitation, European natl.conf. and course, Cambridge, England.(I. R. Henderson, British Council forRehabilitation, Tavistock House, Tavi-stock Sq., London, W.C.1)

1-7. Science in General Education.conf., Basutoland, S. Africa. (Institute ofEducation, Univ. College of Pius XII,Basutoland)

2-4. High-Resolution Nuclear MagneticResonance Spectroscopy, symp., Boulder.Colo. (M. T. Rogers, Dept. of Chemistry,Michigan State Univ., East Lansing)

2-4. Structure of Solid Metallic Solu-tions, intern. colloquium, Orsay, France.(Prof. Guinier, National Scientific Re-search Center, 16 rue Pierre Curie, Paris5", France)

2-5. International Federation of So-cieties of Cosmetic Chemists, London.England. (A. Herzka, Pressurized Pack-aging Consultants, Ltd., AshbourneHouse, Alberon Gdns., London, N.W. 11)

2-6. Biological Effects of IonizingRadiation at the Molecular Level, symp..Brno, Czechoslovakia. (InternationalAtomic Energy Agency, 11 Kaerntnerring,Vienna 1, Austria)

2-6. Ionosphere, conf., London, Eng-land. (Administrative Assistant, Instituteof Physics and Physical Soc., 47 BelgraveSq., London, S.W.1)

2-6. Northern Forest Congr., Oslo,Norway. (T. Austin, Nordiske Skogkon-gress, Akersgaten 42, Oslo)

2-7. Magnetic and Electric Resonanceand Relaxation, intern. conf., Eindhoven,Netherlands. (D. J. Kroon, Philips Re-search Laboratories, Eindhoven)

2-7. National Education Assoc. of theUnited States, Denver, Colo. (W. G. Carr.1201 Sixteenth St., NW, Washington 6,D.C.)

2-11. South African Chemical Institute,Johannesburg, S. Africa. (Secretary, SACI.P.O. Box 3361, Johannesburg)

2-14. Biology of Tuna and RelatedSpecies, intern. mtg., U.N. Food andAgriculture Organization, La Jolla, Calif.(J. L. McHugh, Bureau of CommercialFisheries, Washington 25, D.C.)

3-7. Acta Endocrinologica Congr., Ge-neva, Switzerland. (R. Borth, Laboratoirede la Materinite, Hopital de Geneve, Ge-neva)

3-13. Malariology, inter-African conf.,Yaounde, Cameroun, Africa. (WorldHealth Organization, Palais des Nations,Geneva, Switzerland)

4-11. High-Energy Physics, intern.conf., Geneva, Switzerland. (E. W. D.Steel, CERN, Geneva 23, Switzerland)

5-12. Health and Nutrition Education,inter-African semin., Point Noire, CongoRepublic. (Commission for Technical Co-operation in Africa South of the Sahara,Pvt. Mail Bag 2359, Lagos, Nigeria)

7-14. International Dental Congr.,Cologne, Germany. (R. Braun, Universi-tiitsstr. 73, K6ln-Lindenthal, Germany)

8-12. Pan American TuberculosisCongr., Guatemala City, Guatemala. (Ho-

SCIENCE, VOL. 136

I

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GLASS ABSORPTION

CE LLS made

SCIENTIFIC APPARATUSKlett-Summerson Photoelectric Colorimeters-Colorimeters -Nephelometers -Fluorimeters-Bio-Colorimeters -Comparators - Glass Stand-ards-Klett Reagents.

Klett Manufacturing Co.179 East 87 Street, New York, New York

1 JUNE 1962

Heavy-duty * Large-capacity?6'em TRIPLE-BEAM BALANCENS~~~~~~~~~~~~~~~~~~~~ s......-..:etsi

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NO. 4032

This larger-size balance is recommended for genleral weighing in botlichemistry and physics laboratories. It is especially useful for grossweighings of chemicals. It is 15 x 1312 inches high and all exposedmetal parts are of corrosion-resistant stainless steel.

NTo 4032. Each, $47.25

No. 4032C. Plastic Cover for No. 4032 Balance, Each, $1.70

THE WELCH SCIENTIFIC COMPANYESTABLISHED 1880

1515 Sedgwick Street, Dept. E Chicago 10, Illinois, U.S.A.

McIonufocturers of Scienitific In strumlents aond Laboratory A pporatus

785

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-Si'S 5 .3 U

I Please rush to me, UNITRON's Microscope Catalog 4C-I NameI Company o

strnt II City State I- - - - - - - - m E

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racio Estrada G., Asociaci6n Guatemal-teca de Tisiologia, 1Oa av. 14-65, Guate-mala City 1)

8-12. Psychosomatic Medicine andChildbirth, 1st intern. congr., Paris,France. (L. Chertok, Societ6 Francaise deM6decine Psychosomatique, 54, av. de laR6publique, Villejuif [Seine], France)

8-15. International Assoc. of DentalStudents, congr., Dusseldorf, Germany.(D. H. Clark, Royal Dental Hospital,Leicester Sq., London, W.C.2, England)

8-I5. International Council of ScientificUnions, Abstracting Board, Moscow, Rus-sia. (G. A. Boutry, 292 rue Saint-Martin,Paris 3', France)

9-10. Sonar Systems, symp., Birming-ham, England. (British Institution ofRadio Engineers, 9 Bedford Square, Lon-don, W.C. l)

9-11. Astrophysics, intern. symp.,Liege, Belgium. (P. Swings, Institute ofAstrophysics, Cointe-Sclessin, Belgium)

9-11. NATO Advisory Group for Aero-nautical Research and Development,Paris, France. (NATO, 64 rue de Va-renne. Paris 17')

9-13. European Forestry Commission,session on torrent control, avalanche pro-tection. and watershed management, Italy.(International Agency Liaison Branch,Office of Director General, Food andAgricuLlture Organization, Viale delleTerme di Caracalla. Rome, Italy)

9-13. International Academy of Pathol-ogy, congr., Zurich, Switzerland. (F. K.Mostofi. Armed Forces InstituLte of Pa-thology, Washington 25, D.C.)

9-13. Reticulo-Endothelial System andImmunity. intern. colloqUium, Gif-stur-Yvette, France. (Prof. Halpern, NationalScientific Research Center, 1 6 ruLe PierreCurie, Paris 5", Fr.)

9-14. Glass, intern. congr., Washington,D.C. (C. H. Hahner, Glass Section, Na-tional BuLreaul of Standards, Washington25)

9-15. Clinical Aviation and AerospaceMledicine, mtg., NATO Advisory Groupfor AeronauLtical Research and Develop-ment. Paris. France. (NATO, 64 ruLe deVarenne. Paris 17 )

9-27. Commission for AgricultUralMeteorology. World Meteorological Or-ganization, Toronto, Canada. (WMO. Ge-neva, Switzerland)

11-12. Bird Control, natl. seminar,Bowling Green. Ohio. (W. B. Jackson,Dept. of Biology. Bowling Green StateUniv., Bowling Green)

11-21. South Pacific Conf., Utulei.American Samoa. (Secretary General,South Pacific Commission. P.O. Box 9.Noum6a, New Caledonia)

12-15. French Congr. of Anesthesiol-ogy, Montpellier, France. (J. du Cailar.CliniquLe Saint-Elio. Centre HospitalierUniversitaire. Montpellier)

15. International Soc. of Psychophathol-ogy of Expression, congr., Antwerp, Bel-gium. (ISPE. Cept. d'Art Psychopatholo-gique, Centre Psychiatrique Sainte-Anne,I rue Cabanis, Paris 14'. France)

15. Psychosomatic Aspects of Odonto-stomatology, intern, symp., Milan, Italy.(B. Acht, Piazzetta Umberto Giordano 2,Milan)

16-18. Instrumentation, intern. conf.,Hamburg, Germany. (Conference Secre-tariat, CERN, Geneva 23, Switzerland)

16-18. Instrumentation for High-Energy Physics, intern. conf., Geneva,Switzerland. (E. W. D. Steel, CERN,Geneva 23)

16-19. Novae, Novoids, and Super-novae, intern. colloquium, Lyons, France.(J. Dufay, Faculte des Sciences, Univer-sit6 de Lyons, 30 rue de Cavenne, Lyons)

16-20. Carbohydrate Chemistry, intern.symp., Birmingham, England. (GeneralSecretary, Chemical Soc., BurlingtonHouse, London W.l)

16-20. Paramagnetic Resonance, 1st.intern. conf., Jerusalem, Israel. (W. Low,Hebrew Univ. of Jerusalem)

16-20. Physics of Semiconductors, in-tern. conf., Exeter, England. (Adminis-trative Assistant, Institute of Physics andPhysical Soc., 47 Belgrave Sq., London,S.W.1)

16-25 Aug. Theoretical Physics, semin.,Trieste, Italy. (International AtomicEnergy Agency, 11 Kaerntnerring, Vien-na 1, Austria)

17-18. Data Acquisition and Processingin Medicine and Biology, conf., Roch-ester, N.Y. (K. Enslein, Brooks Research,Inc.. P.O. Box 271, E. Rochester)

17-19. Lunar Missions, mtg.. Ameri-can Rocket Soc., Cleveland, Ohio. (J. J.Harford, ARS, 500 Fifth Ave., New York36, N.Y.)

17-20. FLlorine Chemistry. intern.symp., Estes Park, Colo. (D. N. Gray,Denver Resear-ch InstituLte, Denver 10,Colo.)

17-21. American Ntuclear Soc., natl.mtg., Boston, Mass. (0. J. Du Temple,ANS, 86 E. Randolph St., Chicago 1,Ill.)

18-10. Water and Soil Utilization. in-tern. semin., Brookirigs, S.D. (I. B. John-son. Dept. of Animal Husbandry, SotuthDakota State College. Brookings)

21-28. Instittute on Religion in an Ageof Science, annual stummer conf., StarIsland, N.H. (IRAS. 280 Newton St.,Brookline 46. Mass.)

22-26. AAAS Alaska Division, JuneauL,Alaska. (A. Sosnkowski, Alaska State Mu-seum. Box 2051, Jtuneatu)

22-28. Cancer, intern. congr., Moscow,U.S.S.R. (L. Shabad, Academy of Medi-cal Sciences of the U.S.S.R.. 14 Solyanka,Moscow)

22-28. Latin American Congr. ofGynecology and Obstetrics, Bogota, Co-lombia. (R. Camero, Apartado No. 2463,Bogotult)

27-31. Psychoanalysis, intern. forum,Amsterdam, Netherlands. (L. Salzman.1610 New Hampshire Ave., Washington9, D.C.)

27-31. Recent Advances in Experi-mental and Theoretical Methods of Crys-tal Structure Research, symp.. Munich,Germany. (F. Bopp. Institut fur Theo-retische Physik. Universitat Mwnchen,Schellingstrasse 4-8, Munich)

28-4. International Geographical As-sociation (Esperantist), Odense, Denmark.(P. Thorsen, Dyblandsvangen 7, Copen-hagen, Denmark)

30-10. Recent Advances in Clay Min-eralogy, semin.. University Park. Pa.(College of Mineral Industries and Con-tinuing Education. Pennsylvania StateUniv., University Park)

(See 18 MaY isse for comiprehenssive list)

SCIENCE, VOL. 136

GERM PLASMRESOURCESAAAS SymposiumVolume No. 66

Edited by Ralph E. Hodgson

394 pages, 59 illustrationsIndex, Cloth, April 1961.

PRICE: $9.75. For AAAS members,Only $8.50, prepaid.

Origin of Germ Plasm 4 chaptersNeed For and Utilization ofAdditional Sources of Germ Plasm

-5 chapters

Developmental Programs in Cropsand Livestock -5 chapters

New Approaches in the Use ofPlant and Animal Germ Plasm

-6 chaptersPerpetuation and Protection ofBreeding Stocks 5 chapters

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