Recent AAAS Symposium Volumes#69. Biophysics of PhysiQlogical and Pharmacological #64. Calcification in Biological Systems.

Actions. 1960. 526 pages. 283 illustrations.1961. 612 pages. 212 illustrations. Edited by: R. F. Sognnaes.Edited by: Abraham M. Shanes. "Those interested in current concepts of min-A bird's-eye view of a number of principles eralization of calcified tissues will find in thisnow considered important. Useful for teaching, text the sources of current knowledge on theas well as for research purposes. subject."-American Journal of Orthodontics,

Retail Price: $13.50. AAAS Member's Cash May 1961Price: 11.75. Retail Price: $9.75. AAAS Member's Cash Price:

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#68. Sciences in Communist China. #63. Congenital Heart Disease.1961. 884 pages. 23 illustrations. 1960. 372 pages. 147 illustrations.Edited by: Sidney H. Gould. Edited by: Allan D. Bass and Gordon K. Moe.". . . strongly recommended to all who are "Should serve as a valuable and concise sum-in search of facts and source material on the mation of the more important aspects of con-sciences in China."-Science, 22 September genital heart disease."-American Journal of1961 Cardiology, August 1961

Retail Price: $14.00. AAAS Member's Cash Price: Retail Price: $7:50. AAAS Member's Cash Price:$12.00. $6.50.

#67. Oceanography.#62. Water and Agriculture.

1960. 206 pages. 21 illustrations.1961. 665 pages. 146 illustrations. Edited by: Roy D. Hockensmith.Edited by: Mary Sears. "Contains vital ideas that clarify the functions"I know of no other volume that so well de- of forests and their similarities and differencesfines oceanography, its purpose, opportunities with other types of land."-Journal of For-and requirements."-Science, 9 June 1961 estry, June 1961

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#61. Biological and Chemical Control of Plant and#66. Germ Plasm Resources. Animal Pests.

1961. 394 pages. 59 illustrations. 1960. 286 pages. tl illustrations.Edited by: Ralph E. Hodgson. Edited by: L. P. Reitz."This book will be of interest to nonplant and "The editor and individual authors should beanimal breeders, for the rather general treat- commended on the preparation of this book."ment of various topics . . . allows for rapid -Journal of Economic Entomology, De-perusal."-Bulletin of the Entomological So- cember 1960ciety of America, September 1961 Retail Price: $5.75. AAAS Member's Cash Price:

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#55. Photoperiodism and Related Phenomena in Plantsand Animals.

#65. Aging ... Some Social and Biological Aspects. 1959, 2nd printing 1961. 922 pages. 256 illus-1960. 436 pages. 65 illustrations. trations.Edited by: Nathan W. Shock. Edited by: Robert B. Withrow."The 26 contributors include many of the most ". . . contains very many excellent papers.respected names in American gerontology, and There are few biologists who will not perusethe chapters cover a wealth of material." it with pleasure and profit."-Science Progress,Jouirnal of Gerontology July 1960

Retail Price: $8.50. AAAS Member's Cash Price: Retail Price: $14.75. AAAS Member's Cash$7.50. Price: $12.50.

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1082 SCIENCE, VOL. 136

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SCIENCE, VOL. 1361086

,IC, I

dex and a collection of problems, butonly Alexander and Freund includeanswers (and then for the odd-num-bered problems only). Wilks' book isthe only one that does not containsome of the more common statisticaltables. Alexander has an appendix onmatrices, Freund has an appendix onsums and products, and Birnbaum hastwo appendices-one on some elemen-tary concepts of the theory of sets andone on the inequalities of Schwarz andCauchy. Alexander has a bibliographyof 15 items, and comments thereon, andWilks gives 19 pages of references andauthor index. Each of these books,commensurate with its general level ofpresentation, introduces probability interms of set and measure theory. Alex-ander and Freund do not discuss partialor multiple correlation. I do not pro-pose to undertake a detailed reviewof the contents of these books, but itis my opinion that each of the authorshas reasonably well accomplished hisindicated objectives and that the booksmay well serve as suitable texts foruse at the three levels I have indicated(junior, senior, and graduate), althougha prior introduction to probability andmathematical statistics would also beuseful to the reader of Wilks' book.Freund is a good and experienced text-book writer.

I found misprints, errors, and ques-tionable exposition in each of the fourbooks, but not to such an extent as todegrade their utility and I do not pro-pose to pick at these in detail. I do won-der why Alexander and Birnbaumomitted consideration of factorial mo-ments and their generating function,which are especially convenient in thestudy of discrete distributions, and Iam disappointed by the minimal treat-ment accorded by these authors to theanalysis of categorical data in the formof three-way, or higher order, con-tingency tables.

Wilks' book is certainly one that willbe a must for the personal library ofevery serious statistician. It is a thor-oughly up-to-date book that can wellserve as the textbook for a two-yearcomprehensive course in advancedmathematical statistics. Particularlygood is the breakdown between para-metric and nonparametric estimationand between tests of parametric andnonparametric statistical hypotheses. Itis my opinion, based on classroom ex-perience, that Wilks' exposition wouldhave been improved had he usedmatrix notation more widely through-29 JUNE 1962

out his book, where applicable. Inview of the numerous abbreviations andnotational symbolism introduced in themore than 600 pages of his book, anindex or summary of abbreviations andnotations would be very helpful to thereader. I hope that Wilks will considerthese last items for the next edition ofhis book.

S. KULLBACKDepartment of Statistics,George Washington University,Washington, D.C.

New Books

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After a Hundred Years. The yearbookof agriculture, 1962. U.S. Department ofAgriculture, Washington, D.C., 1962 (or-der from Superintendent of Documents,GPO, Washington, D.C.). 703 pp. Illus.$3.

Careers in Astronautics and Rocketry.Training and opportunities in the spaceand missile fields. Carsbie C. Adams andWernher von Braun. McGraw-Hill, NewYork, 1962. 267 pp. Plates. $6.95.

Il Chimico Scettico. Robert Boyle.Boringhieri, Torino, Italy, 1962. 319 pp.Paper.La Cosmologie de Giordano Bruno.

Paul-Henri Michel. Hermann, Paris, 1962.348 pp. Paper, NF. 15.The Department of Scientific and In-

dustrial Research. vol. 9, New WhitehallSeries. Sir Harry Melville. Oxford Univ.Press, New York, 1962. 200 pp. $4.The Joyous Cosmology. Adventures in

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Miracle Drugs and the New Age ofMedicine. Fred Reinfeld. Sterling, NewYork, ed. 2, 1962. 126 pp. Illus. Plates.$3.95.Power Relations within the Chinese

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Scientific Method. Optimizing appliedresearch decisions. Russell L. Ackoff.Wiley, New York, 1962. 476 pp. Illus.$10.25.

Socialized Medicine in England andWales. The National Health Service, 1948-1961. Almont Lindsey. Univ. of NorthCarolina Press, Chapel Hill, 1962. 574pp. $8.50.

Stars, Men, and Atoms. Heinz Haber.Golden Press, New York, 1962. 189 pp.Illus. $3.99.A Treasury of World Science. Dagobert

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Undergraduate Education in ForeignAffairs. Percy W. Bidwell. Columbia Univ.Press, New York, 1962. 223 pp. Paper,$5.

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Advances in Astronomy and Astro-physics. vol. 1. Zdenek Kopal, Ed. Aca-demic Press, New York, 1962. 376 pp.Illus. $10.

Analytic Geometry. A vector approach.Charles Wexler. Addison-Wesley, Reading,Mass., 1962. 301 pp. Illus. $6.

Asphalts and Allied Substances. Theiroccurrence, modes of production, uses inthe arts, and methods of testing. vol. 3,Manufactured Products. Herbert Abraham.Van Nostrand, Princeton, N.J., ed. 6,1962. 980 pp. Illus. $25.

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Communications Satellites. Proceedingsof a symposium held in London, May1961, organized by the British Inter-planetary Society. L. J. Carter, Ed. Aca-demic Press, New York, 1962. 211 pp.Illus. Plates. $7.Computer Basics. vol. 6, Solid State

Computer Circuits. Sams, Indianapolis,Ind., 1962. 223 pp. Illus. Paper, $4.95.

Elements of Physics. D. Lee Baker,Raymond B. Brownlee, and Robert W.Fuller. Revised by Paul J. Boylan. Allynand Bacon, Boston, 1962. 691 pp. Illus.Fundamental Problems in Statistical

Mechanics. Proceedings of the Internation-al Summer Course in Science, arranged bythe Netherlands Universities Foundationfor International Co-operation, August1961. Compiled by E. G. D. Cohen.North-Holland, Amsterdam; Interscience,New York, 1962. 261 pp. Illus. $7.50.

Hydroboration. Herbert C. Brown. Ben-jamin, New York, 1962. 303 pp. Illus.$10.

Introduction to Molecular Spectroscopy.Gordon M. Barrow. McGraw-Hill, NewYork, 1962. 331 pp. Illus. $10.75.An Introduction to the Theory of

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REHABILITATION OF THE MENTALLY ILLSocial and- Economic Aspects

A symposium of the A me)rican Psychiatric A sso-ciation, cosponsored by the AAAS Section onSocial and Economic Sciences and the AmericanSociological Society.

Edited by Milton Greenblatt and Benjamin SimonThis volume presents an up-to-date picture ofrehabilitation in its broadest sense. The contri-butions are from outstanding researchers andpractitioners in the field. The process of rehabili-tation is examined from the standpoint of (a')hospital, (b) transitional aspects, and (c) com-munity. The rehabilitation of the individual inthe total sense is seen as a continuum startingfrom the moment of admission to his final re-settlement in the community and manv tech-niques and recommendations for improved patientcare and treatment are contained in the book.

Decenmber 1959. 260 pp., $5.00AAAS Memibers' Cash Orders $4.50

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MeetingsForthcoming Events

August

2-7. Long-Range Goals for Ethical Hu-manism, intern. congr. Blindern, Norway.(Secretariat, Intern. Humanist and EthicalUnion, 152 Oudegracht, Utrecht, Nether-lands)

S-8. Heat Transfer, conf. & exhibit,Houston, Tex. (A. B. Conlin, Jr., Amer.Soc. of Mechanical Engineers, 29 W. 39St., New York 18)

5-11. Industrial Research, annual conf.,New York, N.Y. (M. F. Garvey, 301 ASeelev W. MuLdd Bldg., Columbia Univ..New York 27)

5-11. Radiation Research, intern. congr..Yorkshire, England. (A. Howard, MountVermon Hosp., Northwood, Middlesex,England)

6-10. Society for Clinical and Experi-mental Hypnosis, natl. convention-Inter-national Soc. for Clinical and Experi-mental Hypnosis, intern. congr., Portland,Ore. (J. G. Watkins. Clinical PsychologyDept.. V.A. Hospital. Portland 7)

6 10. World Federation for MentalHealth, annual, Lima, Peru. (SecretaryGeneral, 19 Manchester St., London, W.I.England)

6-17. International Commission for Pre-vention of Alcoholism, annuial, Seattle.Wash. (ICPA, 6830 LauLrel St., NW, Wash-ington 12, D.C.)

7. World Medical Esperanto Assoc., an-

ntial, Copenhagen. Denmark. (M. Jarnosz-kiewicz, Majowieska 69. Krakow, Poland)

7-8. Forest Prodtucts Utilization. anntualconf., Blacksbtirg, Va. (C. J. Holcomb,Virginia Polytechnic Inst.. BlacksbuLrg)

7-9. Low-Level Wind Conf.. El Pa.soand Dallas, Tex. (American Meteorolog-ical Soc., 45 Beacon St., Boston 8, Mass.)

8-10. Standards Laboratories, natl.conf.. Boulder, Colo. (A. E. Hess. CircuiitStandiards Div., Natl. Bureau of Standards.Boulder)

8-10. X-ray Analysis Applications, an-

nual conf.. Denver. Colo. (W. M. Mueller,Metallurgy Div., Denver Research Inst.,Univ. of Denver, Denver 10)

8-14. Trace Gases and Natural and Ar-tificial Radioactivity in the Atmosphere.symp., Utrecht, Netherlands. (E. C. Junge,Intern. Assoc. of Meteorology and Atmos-pheric Physics, 26 Blueberry Lane, Lex-ington. Mass.)

8-15. Fertility and Sterility, intern.congr., Rio de Janeiro, Brazil. (J. A. Ca-bello, Parque Meliton Porras 161, Mira-fores, l ima, Peru)

10-11. Man-Machine Competition, mtg.,Seattle, Wash. (Inst. of the Aerospace Sci-ences, 2 E. 64 St., New York 21, N.Y.)

10-18. Poultry, intern. congr., Sydney.AuLstralia. (World's Potultry Science Assoc.,674 W. Lane Ave., Columbus 10, Ohio)

11-13. International Mathematical Un-ion, genl. congr., Saltsjdbaden, Sweden.(R. Thorn, Intern. Congr. of Mathema-ticians, c/o Kungl. Jirnviigsstyrelsen.Stockholm C, Sweden)

12-16. American Veterinary MedicalAssoc., Miami Beach, Fla. (H. E. King-man. Jr., AVMA, 600 S. Michigan Ave.,Chicago. Ill.)

13-16. Biological Problems in WaterPollution, seminar-Effects of Radioac-tivity on Aquatic Environment, Concen-tration of Radioactive Materials and Sug-gested Safe Limits. symp., Cincinnati,Ohio. (C. M. Tarzwell. Taft Sanitary En-gineering Center, 4676 Columbia Pkwy.,Cincinnati 26)

13-16. Pacific Energy Conversion Conf.,San Francisco, Calif. (R. S. Gardner,Amer. Inst. of Electrical Engineers, 33 W.39 St.. New York 18, N.Y.)

13-16. Science Writers, intern. seminar,Seattle, Wash. (E. H. Kone, American Inst.of Physics, 335 E. 45 St., New York 17)

13- 17. Antarctic Logistics, symp..Boulder, Colo. (invitation only). (Nat].Acad. of Sciences, 2101 ConstituLtion Ave.,NW, Washington 25. D.C.)

13-17. Clay Minerals, annual conf.,Ottawa. Ont.. Canada. (D. HuLnka, Natl.Research CouLncil. Ottawa)

13-17. Lunar Exploration, intern. conf.,Blacksbturg, Va. (J. B. Eades. Jr.. Dept. ofAerospace Engineering, Virginia Polytech-nic Inst., Blacksburg)

14-16. Cryogenic Engineering, annualconf., Los Angeles, Calif. (K. D. Timmer-haus, Chemical Engineering Dept., Univ.of Colorado, Boulder)

14-16. Precision Electromagnetic Meas-uiremiients, intern. conf.. Bouilder, Colo.(J. F. Brockman, Nat]. Bureau of Stand,ards. Boulder)

15-17. Electronic Packaging, annualsymp.. Boulkder, Colo. (A. Brown, 3552Chemistry Bldg., Univ. of Colorado,Botulder)

15-22. Mtathematics. intern. congr..Stockholm. Sweden. (B. Ecknian, Intern.Mathematical Union, d/o Ecole Polytech-niqule Fed6rale, Zurich. Switzerland)

16-18. Communications Technology.seminar. San Diego, Calif. (R. C. Cannon.California Western Univ., 3902 LomalandDr.. San Diego 6)

16-18. Food Microbiology, intern.symp., Montreal, Canada (by invitation).(D. A. A. Mossel, d/o Central Inst. forNtutrition Research. Catharijnesingel 61,Utrecht, Netherlands)

17-24. Internationail Soc. for Humanand Animal Mycology, congr.. Montreal.Canada. (R. Vanbretuseghem, Institut deM6decine Tropicale, 155 rtue Nationale.Antwerp, Belgitum)

19-22. American Soc. of Animal Sci-ence. Corvallis. Ore. (C. E. Terrill. AnimalHUsbandry Research Div., AgriculturalResearch Center, Beltsville, Md.)

19-23. Conservation Education Assoc..anntual, Stevens Point. Wis. (O. C. Sand.17715 Westview Dr., New Berlin, Wis.)

19-23. Health, anntual conf. and exhibit.University Park, Pa. (M. Cashman, Penn-sylvania Dept. of Health, P.O. Box 90.Harrisburg)

19-25. Microbiology, intern. congr..Mlontreal, Canada. (N. E. Gibbons, Nat].Research Couincil, Ottawa 2, Ont., Canada)

19-26. Image Formation and Vision.intern. conf., MuLnich, Germany. (H.Schober, Intern. Commission for Optics.Miinchen 19, Arnulfstr. 205, AEC-Hats.Germany)

19-31. International Union of Geodesyand Geophysics, general assembly, Berke-ley, Calif. (American Geophysical Union,1515 MassachuLsetts Ave., NW, Washing-ton 5, D.C.)

SCIENCE, VOL. 136

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For the first time... International authorities integrate existingknowledge on man's tolerance to environmental changesThe most comprehensive review of environmentalphysiology published in recent years

MAN'S DEPENDENCE ON THE EARTHLY ATMOSPHEREEdited by Karl E. Schaefer, M.D., Head of PhysiologyBranch, U. S. Naval Medical Research Laboratory atNew London, Conn.

The Proceedings of the First Interna-tional Symposium on Submarine andSpace Medicine, held in New London,Conn. in September, 1958, are now avail-able in book form. Contents include:Effects of acute and chronic environ-mental stress conditions on endocrineand metabolic functions, on circulation,on respiratory mechanisms, on respira-tory functions; toxicological problems inconfined spaces; Human ecology in con-fined spaces. 416 pages $14.50

The Macmillan Company, 60 Fifth Ave., New York 11, N. Y. S-1Please send copy(ies) of:

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A survey of the effects of atmospheric changes oncentral nervous system functions and consciousness

ENVIRONMENTAL EFFECTS ON CONSCIOUSNESSEdited by Karl E. Schaefer, M.D.

Also a result of the same symposium,this volume includes among its con-tributors, scientists who were membersof the bathyscaph crew who descendedto depths greater than 10,000 feet, bal-loonists who ascended above 100,000feet, and members of the Nautilus crewwho crossed the North Pole under ice.

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1128

20-22. Progress in Nuclear Science andEngineering EduLcation, conf., GatlinbuLrg,Tenn. (University Relations Div., Oak-Ridge Inst. of Nuclear Studies, P.O. Box117, Oak Ridge, Tenn.)

20-23. American Soc. of Agonomy,annual, Ithaca, N.Y. (ASA, 2702 MonroeSt., Madison 5, Wis.)

20-23. Problems of Gyroscopy, symp.,Celerina, Upper Engadine, Switzerland.(H Ziegler, Comit6 Scientifique, UITAM,Ecole Polytechnique Fed6rale, Zurich,Switzerland)

20-24. Chemistry Congr., Abo, Finland.(E Wainninen, Turun Yliopiston KemianLaitos Vattenborgsviigen 5, Abo 2)

20-24. Scientific Committee on Antarc-tic Research, mtg., Boulder, Colo. (by in-vitation). (Natl. Acad. of Sciences-Nat].Research Council, 2101 Constitution Ave.,NW, Washington 25, D.C.)

20-24. Soil Science Soc. of America.annuLal, Ithaca, N.Y. (M. Stelly, AmericanSoc. of Agronomy, 2702 Monroe St., Mad-ison 5, Wis.)

202-4. Structural Design of AsphaltPavements, intern. conf., Ann Arbor,M\ich. (W. K. Parr, Box 619, Univ. ofMichigan, Ann Arbor)

20-25. American Soc. of l1imnology andOceanography, Madison, Wis. (G. H.Lauaff Dept. of Zoology, Univ. of Mich-igan, Ann Arbor)

20-25. Limnology, intern. congr., Madi-son, Wis. (J. C. Wright. Birge Hall, Univ.of Wisconsin. Madison 6)

21-24. Electronics. exhibit and conven-tion, Los Angeles. Calif. (Technical Pro-gram Chairman, WESCON Business Of-fice, 1435 S. La Cienega Blvd., Los An-geles 35)

21-24. Far Infrared Spectroscopy, in-tern. symp., Cincinnati, Ohio. (Office ofInformation, Wright Air DevelopmentDiv., Wright-Patterson Air Force BaLse,Ohio)

21 -24. Fracture in Crystalline Solids,intern. conf., Maple Valley. Wash. (Amer.Inst. of Mining, Metallurgical anid Petro-leuLm Engineers, 345 E. 47 St., New York1 7, N.Y.)21-25. International Inst. of Refrigera-

tion, commissions mtg., Washington, D.C.(W. Pentzer, National Research Council,2101 ConstituLtion Ave., Washington 25)

21-25. International Scientific Commit-tee for Trypanosomiasis Research, mtg.,Dalaba. Guinea, Africa. (Commission forTechnical Cooperation in Africa South ofthe Sahara, Private Mail Bag 2359, Lagos,Nigeria, Africa)

21 28. Acoustics, intern. congr., Copen-hagen. Denmark. (F. H. B. Interslav,Tekniske Hojskole, 0stervoldgade 10,Copenhagen)

21 -6. Pan American Sanitary Conf.,Minneapolis, Minn. (Pan American Sani-tairy Bureau, 1501 New Hampshire Ave.,NW, Washington 6, D.C.)

22-23. International Commission onRadiological Units and Measurements.mtg., Montreal, Canada (members only).(H. 0. Wyckoff, X-ray Section, Nat]. Bu-reau of Stand'ards, Washington 25, D.C.)

22-24. Calorimetry. annual conf., Berke-ley, Calif. (J. A. Morrison, Div. of PLureChemistry, Natl. Research Council, Otta-wa, Ont., Canada)

22-24. X-ray Optics and Microanalysis,intern. conf., Stanford, Calif. (L. Zeitz,

Biophysics Laboratory, Stanford Univ.,Stanford)

22-25. Neurology Congr., Oslo. Nor-way. (S. Rufsum, Rikshospitalet, Oslo)

22-26. American Assoc. for the Ad-vancement of Science, Alaska Div., Ju-neau, Alaska. (A. Sosnkowski, AlaskaState Museum, Box 2051, Juneau)

23 -24. Thin Films Conf., Denver, Colo.(R. B. Feagin, Univ. of Denver ResearchInst., Denver 10)

23-25. Obstetrics and Gynecology,congr., Copenhagen, Denmark. (P. Lange,Eivindsvej 36 Chl., Copenhagen)

23-26. International Union of the His-tory and Philosophy of Science, Philos-ophy Div., genl. assembly, Helsinki, Fin-lanid. (R. Taton, 64 rue Gay-Lussac, Paris5", France)

24-25. Friends of the Pleistocene, RockyMouLntain section, annual field trip, TwinFalls, Idaho. (H. E. Malde, U.S. Geologi-cal Survey, Federal Center, Denver, Colo.)

24-31. Child Psychiatry, intern. congr.,Scheveningen, Netherlands. (Secretary, c/oHolland Organizing Center, Lange Voor-houLt 16, The HaguLe, Netherlands)

24-25. Plant Phenolics GroLup of NorthAmerica, annuial, Corvallis, Ore. (V. C.RUneckles, Imperial Tobacco Co. of Can-ada. P.O. Box 6500. Montreal, Quebec)24- 1. Sulrveying, intern. congr., Vienna,

AuLstria. (A. Barvir, Intern. Federation ofSurveyors, Krotenthallergasse 3, Vienna 8)

24-2. International Pharmaceutical Stu-dents' Federation, congr., Barcelona,Spain. (A. Damen, IPSF. Spaargarenstraat26, Oegstegeest-Leiden. Netherlands)

2 --26. International Chiropractors As-soc., annuLal, Davenport, Iowa. (G. R.Price, 741 Brady St., Davenport)

2 -31. Environmental Control of PlantGrowth, intern. symp., Canberra, AuLstra-lia. (L. T. Evans, C.S.I.R.O.. Div. of PlantIndustry, P.O. Box 109, Canberra City,A.C.T., Atustialia)

26. American Assoc. of Electromyog-raphy and Electrodiagnosis, annuial, NewYork. N.Y. (M. K. Newman, 16861 Wy-oming Ave., Detroit 21, Mich.)

26-29. American Inst. of Chemical En-gineers, natl. mtg., Denver, Colo. (F. H.Poettmann. Ohio Oil Co., P.O. Box 269,Littleton, Colo.)

26-29. Soil Conservation Soc. of Amer-ica. Washington, D.C. (H. W. Pritchard,838 Fifth Ave., Des Moines 14, Iowa)

26-31. American Inst. of BiologicalSciences-American Assoc. for the Ad-vancement of Science, Pacific Div., Cor-valllis, Ore. (AIBS, 2000 P St., NW, Wash-ington 6, D.C.)

26-31. International Commission forUniform Methods of Sugar Analysis, ses-sion. Berlin, Germany. (F. Schneider,Langer Kamp 5, Braunschweig, Germany)

26-1. International Federation of In-formation Processing Societies, annual,MuLnich. Germany. (I. L. Auerbach, Auer-bach Electronics Corp., 1634 Arch St.,Philadelphia 3, Pa.)

26-1. Radiology, intern. congr., Mont-real. Canada. (C. B. Peirce, Suite 204,1-555 Summerhill Ave., Montreal 25)

26-2. History of Science, intern. congr.,Ithaca, N.Y. (26-31 Aug.), and Philadel-phia, Pa. (31 Aug.-2 Sept.). (Secretary,Intern. Congr. of the History of Science,Cornell Univ., Ithaca)(See issue of 22 Junze fo, comp,rehetsive list)

SCIENCE, VOL. 136