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20 DEEMBE 196 159

P P L OPleuropneumonia-like Organisms

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1 59520 DECEMBER 1963

studies; it is these velocities that are themost important in surface-wave studies.

Uffen (Canada) proposed a qualita-tative hypothesis relating the« radiation-shielding effect provided by the earth'smagnetic field to certain features of lifeon earth. As a result of the thermalhistory of the earth, the field did notexist in the earlier stages, nor did life.Later, near times of field reversal, in-tense radiation would have strongly in-creased the rate of mutation in livingorganisms.

Stichov (U.S.S.R.) demonstrated theexistence of a high-density form ofsilica, thus providing a possible explana-tion for the high densities observed inthe lower mantle.Some confirmation of the resonance

effect between earth tides and- the di-urnal nutation of the earth was pre-sented by Pariisky (U.S.S.R.). His re-sults are based on the analysis of twolong series of tidal-gravity observationsat Tashkent (64-month analysis) andFrunze (39-month analysis).Vinogradov (U.S.S.R.) claims that

stony meteorite matter at atmosphericpressure under repeated heating at atemperature of 1500°C actually sepa-rates into basaltic and dunite matter.Further experimental verification, es-pecially at high pressure and tempera-ture, accompanied by careful petro-graphic analysis may lead to the solu-tion of some fundamental problemsconcerning the origin and formation ofthe earth.Some papers were given on the deep-

drilling programs in the United Statesand the U.S.S.R. The order of priorityin the Soviet program is as follows:(i) deep depressions of platform andgeosynclinal areas (the North-Caspiandepression, or oil- and gas-bearing areasof Azerbaidzhan); (ii) 'Paleozoic geo-synclines (the Urals, or Central Kazach-stan); (iii) ancient shields (Karolia orthe Ukraine); (iv) crustal regions ofthe transitional type (Transcaucasus orBlack Sea); (v) regions of the islandareas and of the crust close" to theoceanic type (southern Kurile Islandsor Southern Sakalin). This order ofpriority is very different from that ofthe United States, where all effort isbeing focused on an attempt to drill tothe Mohorovicic discontinuity, beneaththe ocean.

About 2000 scientists from 60 coun-tries attended the assembly.

JACK OLIVEPRLamont Geological Observatory ofColumbia- University,Palisades, New York

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20 DECEMBER 1963

Forthcoming Events

December

26-28. National Council of Teachers ofMathematics, San Angelo, Tex. (H. T.Karnes, Dept. of Mathematics, LouisianaState Univ., Baton Rouge 3)

26-30. American Assoc. for the Ad-vancement of Science, Cleveland, Ohio.(R. L. Taylor, AAAS, 1515 Massachu-setts Ave., NW, Washington, D.C. 20005)

28-29. Linguistic Soc. of America, Chi-cago, Ill. (H. L. Smith, Jr.. Dept. of Lin-guistics, Univ. of New York at Buffalo,N.Y.)

January

1-4. Solid State Physics Conf. Bristol,England. (L. Lawrence, Inst. of Physicsand the Physical Soc., 47 Belgrave Sq.,London, S.W.1)

7-9. Reliability and Quality Control,natl. symp., Washington, D.C. (AmericanSoc. for Quality Control, 161 W. Wiscon-sin Ave., Milwaukee, Wis. 53203)

8-11. Radioactive Isotopes in ClinicalMedicine and Research, 6th intern. symp.,Bad Gastein, Austria. (R. Hofer, SecondMedical University Clinic, Garnisongasse13, Vienna 9. Austria)

8-11. National Soc. of ProfessionalEngineers, winter meeting. Phoenix. Ariz.

BIOCHEMISTRY MICROBIOLOGY

VIROLOGY PHARMACOLOGY

PATHOLOGY HEMOTOLOGY

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(P. H. Robbins, 2029 K St., NW, Wash-ington, D.C.)

16-18. Royal College of Physicians andSurgeons of Canada, Quebec. (The Col-lege, 74 Stanley Ave., Ottawa 2, Ont.)

16-23. Nucleic Acids, symp., Hydera-bad, India. (P. M. Bhargava, Regional Re-search Laboratory, Hyderabad 9)

19-24. American Chemical Soc., 146thnatl. meeting, Denver, Colo. (ACS, 115516th St. NW, Washington, D.C.)

20-15. Commission for AeronauticalMeteorology, World Meteorological Or-ganization, 3rd, Paris, France. (WMO, 41Ave. Giuseppe-Motta, Geneva, Switzerland)

20-22. American Inst. of Aeronauticsand Astronautics, aerospace sciences mtg.,New York, N.Y. (R. R. Dexter, AIAA, 2E. 64 St., New York 21)

20-23. Cardiovascular Drug Therapy,symp., Philadelphia, Pa. (S. Rosen, Dept.of Medicine, Hahnemann Medical Collegeand Hospital, 230 N. Broad St., Philadel-phia 2)

20-24. American Mathematical Soc.,Miami, Fla. (AMS, 190 Hope St., Prov-idence 6, R.I.)

20-24. Australian and New ZealandAssoc. for the Advancement of Science,Canberra (J. R. A. MacMillan, Facultyof Agriculture, Univ. of Sydney, N.S.W.,Australia)

20-27. Agricultural Film Competition,3rd intern., Berlin, Germany. (CongressHall, John Foster Dulles Allee, BerlinN.W. 21)

22-25. American Physical Soc., NewYork, N.Y. (APS, Columbia Univ,, NewYork, N.Y.)

22-25. American Assoc. of PhysicsTeachers, New York, N.Y. (E. U. Condon,Oberlin College, Oberlin, Ohio)

23. Central Council for Health Educa-tion, annual conf., London, England. (Di-rector, CCHE, Tavistock House, TavistockSq., London, W.C.1)

23-24. Industrial Water and WasteConf., Austin, Tex. (J. B. Maline, Jr., 305Engineering Laboratories Bldg., Univ. ofTexas, Austin 12)

25. Industrial Hygiene and Air Pollu-tion, 8th conf., Austin, Tex. (J. 0. Led-better, 305 Engineering LaboratoriesBldg., Univ. of Texas, Austin 12)

27-30. Society of Plastics Engineers,20th annual technical conf., Atlantic City,N.J. (J. J. McGraw, Natl. VulcanizedFibre Co., Philadelphia, Pa.)

27-31. UNESCO, working party on sci-entific translation and terminology, Rome,Italy, (UNESCO, Place de Fontenoy, Paris7)

29-31. American Meteorological Soc.,44th annual, Los Angeles, Calif. (A.Court, 17168 Septo St., Northridge, Calif.)

29-1. Southwestern Federation of Ge-ological Societies, 6th annual, Midland,Tex. (W. E. Wadsworth, AAPG, 1444 S.Boulder, P.O. Box 979, Tulsa 1, Okla.)

29-l. Western Soc. for Clinical Re-search, 17th annual, Carmel-by-the-Sea,Calif. (H. R. Warner, Latter-Day SaintsHospital, 325 Eighth Ave., Salt Lake City,Utah)

30-31. Spontaneous and Experimental

I

Comparative Atherosclerosis, conf., Bev-erly Hills, Calif. (E. McCandless, LosAngeles County Heart Assoc., Los An-geles 57, Calif.)

SCIENCE, VOL. 142

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