110~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

will direct the expedition, which willstudy the nesting practices, habitat,and migration of the scarlet ibis andother bird life of the area. Dr. Zahlhopes to locate colonies of the scarletibis in rookeries deep in the floodedllanos of Venezuela 's State of Apure,which can be reached only by smallboat or horseback. The birds are

reported to have sought refuge withherons, otker ibis varieties, and pos-

sibly spoonbills.Dr. Zahl will make his headquar-

ters in San Fernando, where he willbe joined by native helpers. Thegovernment of Venezuela will co-

operate with him to further the workof the project. The expedition willbe assisted by William Phelps, resi-dent associate in Caracas of theAmerican Museum of Natural His-tory.

The new system of electricalmeasurement using absolute units,adopted by the International Con-ference of Weights and Measuresand officially instituted January 1,1948, is described in a new booklet,Circular C475, Establishment and

Maintenance of the Electrical Units,published by the National Bureauof Standards and available at 25cents a copy from the U. S. Govern-ment Printing Office, Washington 25,D. C. The booklet gives an account

of the working, history, and mainte-nance of the international system ofelectrical units. Also described are

the methods used in the measure-

ments that now form the basis forthe absolute units, in which all cer-

tifications for standards and instru-ments are given by the NationalBureau of Standards.

The Registry of Rare Chemi-cals, 35 West 33rd Street, Chicago16, Illinois, lists the followingwanted chemicals: 1,4-dihydropyra-zine-2,3-dione, 1,2-dihydropyridazine-3,4-dione, 1,2-dihydropyridazine-3,6-dione, l-mannose, 1-galactose, narin-genin, 2-methyl-3-hydroxy-y-pyrone,phosphorylthiocholine, phosphoryl-choline, coniferyl aldehyde, impera-torin, 6-ketoprogesterone, 2-methyl-5-hydroxypropiophenone, 2-methyl-3-nitropropiophenone, 2-methyl-5-ami-nopropiophenone, sulfanylthiourea,phloretin, cyclobutane, cyanogen, and2-thio-4-aminopyrimidine.

Make Plans for-American Society of Photogram-

metry, regional meeting, October 3-4, Denver, Colorado.

American Dietetic Association,32nd annual meeting, October 11-14,Denver, Colorado.

American Association of Petro-leum Geologists, October 12-15,Biloxi, Mississippi.

American Dental Association,October 17-21, San Francisco.

Symposium on small angle X-ray scattering, October 21-22, Uni-versity of Missouri, Columbia.

National Academy of Sciences,autumn meeting, October 24-26, Uni-versity of Rochester, New York.

Optical Society of Aunerica, 34thannual meeting, October 27-29, HotelStatler, Buffalo, New York.

Recently Received-Journal of the Council for Scientificand Industrial Research, Common-wealth of Australia. (Quarterlypublication.) Direct inquiries toJ. J. Gourley, Govt. Printer, Mel-bourne, Australia.

Study of the Interrelationships ofPsychological and PhysiologicalMeasures on Submarine EnlistedCandidates by Ellsworth B. Cookand Robert J. Wherry. Issued byMedical Research Laboratory,U. S. Naval Submarine Base, NewLondon, Conn.

Cochise and Mogollon Sites, PineLawn Valley, Western New Mex-ico, by Paul S. Martin, John B.Rinaldo, and Ernst Antevs.(Fieldiana: Anthropology, Vol.38, No. 1.) Issued by ChicagoNatural History Museum, Chicago,Ill. $3.50.

Table of Sines and Cosines to FifteenDecimal Places at Hundredths ofa Degree. (National Bureau ofStandards, Applied MathematicsSeries No. 5, 1949.) Availablefrom Supt. of Documents, U. S.Govt. Prntng. Office, Washington25, D. C. at 40 cents.

El Aliso (series of papers on thenative plants of California), Vol.

2, #1, including "A Long TermTest of Seed Longevity." RanchoSanta Ana Botanic Garden, Route3, Anaheim, Calif. $5.00 per

volume.List of Scientific Papers Published

in the Middle-East, May 1949 is-sue. Unesco, Science CooperationOffice-Middle-East, Cairo, Egypt.

The Terena and the Caduveo ofSouthern Mato Grosso, Brazil byKalervo Oberg. (Smithsonian In-stitution, Institute of Social An-thropology, Publ. No. 9, 1949.)Order from Supt. of Documents,U. S. Govt. Prntng. Office, Wash-ington 25, D. C. Price 60 cents.

Guide to the Collection of Rocks inthe British Museum. (2nd ed.)Order from British Museum (Nat-ural History), London, S. W. 7.One shilling.

Third Annual Report of the SouthAfrican Council for Scientific andIndustrial Research. Printed byCape Times, Ltd., Cape Town,South Africa.

The deadline for the receiptof nominations by fellows ofthe AAAS for the TheobaldSmith Award in Medical Sci-ences, established in 1936 byEli Lilly and Company, hasbeen extended to October 30.For the conditions of this an-nual award, which consists of$1,000, a bronze medal, andtravel expenses up to $150, seeScience, July 15, p. 80. Nomi-nations should be sent to Dr.Gordon K. Moe, secretary ofSection N, Medical School, Uni-versity of Michigan, duringSeptember, and to Dr. MalcolmH. Soule, chairman of theAward Committee, same ad-dress, during October.

Entries in the Annual Inter-national Photography-in-Sci-ence Salon, sponsored jointlyby The Scientific Monthly andthe Smithsonian Institution, willbe accepted by the Editor, TheScientific Monthly, 1515 Massa-chusetts Aye, N.W., Washing-ton 5, D. C., up to the date ofjudging, September 24, 1949.

September 16, 1949, Vol. 1 10SCIENCE290

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September 16, 1949, Vol. 11013

PRINCIPLES and PRACTICE in ORGANIC CHEMISTRYBy Howard J. Lucas and David Pressman. Accuracy, timeliness, and thoroughness characterizethis laboratory manual in organic chemistry. Another feature is its wealth of experiments. Withits detailed notes, precautions, discussion of methods, and application of principles, the manual em-phasizes the physico-chemical approach to laboratory practice. Reference purposes are served bythe many tables of important data and thorough discussion of such topics as methods of purifica-tion and methods of preparing organic compounds.September 1949 557 pages Illus. $6.00

ELECTRONIC INTERPRETATIONS of ORGANIC CHEMISTRYSecond Edition. By A. Edward Remick. This new edition serves as a review of the field andgives the reader a working knowledge of the subject so that he will know how to proceed in usingthe electron theory as an aid in solving his laboratory problems either in pure or applied chemistry.All reasonably well substantiated theories are explained and critically analyzed. English electronictheory of organic chemistry is combined with the American counterpart.2nd Ed. June 1949 600 pages Illus. $6.00

DIFFERENTIAL EQUATIONSSecond Edition. By Harry W. Reddick. This new edition deals with methods of solving ordin-ary differential equations and problems in applied mathematics involving ordinary differential equa-tions. New in the second edition is a chapter on the linear equation of second order; additional ma-terial on hyperbolic functions, systems of curves, and vibratory motion; amplification of the treat-ment of the motion of a weight attached to a spring; and certain problems and figures.2nd Ed. June 1949 288 pages Illus. $3.00

LANDSCAPE-As Developed by the Processes of Normal ErosionSecond Edition. By C. A. Cotton. A- geomorphological study of landforms in moist climates,this new book covers all landforms for which "normal" erosion is responsible. Abundant illustra-tions accompany every phase of the discussion. Among the subjects covered are rain and rivers; thecycle of erosion; romoclinal features and structural benches; lateral corrosion and meanderingrivers; peneplains; effects of uplift and warping; and positive and negative movements of base-level.and Ed. June 1949 509 pages Illus. $3.75

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16 SINESpebr1,14,Vl 1

REGISTER* NOWfor the New York Meeting of the AAAS

AVOID CONGESTION AND DELAYGET YOUR GENERAL PROGRAM

EARLY IN DECEMBERRegistration in advance of arrival at the 116th Annual Meeting of the

AAAS in the Pennsylvania Zone hotels of New York City, December 26-31,1949, has so many advantages that we wonder why almost everyone doesn'ttake this simple step. For instance:l You avoid congestion and delay at the Registration Desks in the hotel

foyers. All indications point to a record-breaking attendance since allof the Association's seventeen sections and subsections, and more thanfifty societies, will have sessions; also this is the first meeting in NewYork City since 1928.

2. You receive the General Program early in December in ample time un-hurriedly to decide among the events and the sessions of the societiesthat you wish to attend.

3. Your name and hotel address will be in the Visible Directory the firsthour of the first day of the meetings, since it will be posted in Washing-ton as soon as processed.

4. Advance Registrants will have the same privileges of receiving a mapand directory of points of interest of New York City, literature, radiobroadcast tickets, etc. At the convenience of Advance Registrants, thesewill be distributed from the Main Registration on the Penn Top of theHotel Statler, the location of the Annual Science Exposition, the VisibleDirectory, and the Science Theatre. Admission to the excellent seriesof latest scientific films will be free to all Registrants.

This year, as a result of the vote of the biological societies, includingthe American Society of Naturalists, the sponsors, the Biologists'Smoker will be open only to regular registrants or those who pay aregistration fee at the time.

-THIS IS YOUR ADVANCE REGISTRATION COUPON-1. Registration Fee enclosed: (cheek one)

[] $2.00 A.A.A.S. Member a $2.00 College Studentn $2.00 Wife (or Husband) of Registrant U $3.00 Non-member of A.A.A.S

2. F U L L N A ME (Miss,Mrs. Dr., etc.) .........................................................................................................................................................

(Please print or typewrite) (Last) (First) (Initial)3. ACADEMIC, PROFESSIONAL OR

BUSINESSCONNECTION ........... ............................

4. O F F IC E O R H O M E A D DRESS ..................................................................................................................................................................................(For receipt of Program and Badge)

5. Y O U R F IE L D O F IN T EREST .................................................................................................................................................................................

...............................(If not known now may be added later)

7. DATE OF ARRIVAL ........ ............ DATE OF DEPARTURE.Please mail this Coupon and your check or money order for the fee, $2.00 or $3.00,

to THE AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE,1515 Massachusetts Avenue, N.W., Washington 5, D. C.

16 SCIENCE September 16, 1949, Vol. 1 10

September 16, 1949, Vol. 110 SCIENCE 17

/949

A4.AS-?eorie We3Uinyou be

SCIENCE WRITI NG AWARDS

Bringing with it profound mysteries, as well as nearmiracles, the atomic age has made a knowledge of sci-entific progress as essential to world understanding asa comprehension of politics or economics. Believingthat special recognition and encouragement should begiven to those writers who have the grave responsi-bility of making science something near and real tothe common man, the Westinghouse EducationalFoundation and the American Association for theAdvancement of Science have jointly sponsored theScience Writing Awards since 1946 for newspapers,and since 1947 for magazines. The task of makingour citizens acquainted not only with the triumphsof science, but also with the orderly paths by whichthey are attained, makes the Awards of more thancasual interest.

NewspapersPrize Award $1,000Newspaper writers should submit 3 (andonly 3) separate published articles writtenduring the contest year, August 1, 1948,through September 30, 1949. Each writermust designate one article as the entryupon which he wishes to be judged. Threecopies of each entry (with entry blank)must be mailed in the form of tear sheets,photostats, clippings, reprints, or syndi-cate copy, showing name and date of thepublication, to the Chairman of theManaging Committee before midnight,October 8, 1949.

MagazinesPrize Award $7,000

Magazine writers will be required to sub-mit one published article written duringthe contest year, August 1948 throughSeptember 1949, but may submit up tothree. These must be in the form of tearsheets, clippings, or reprints, showingname and date of the publication, with anentry blank for each exhibit. Entriesmust be mailed to the Chairman of theManaging Committee before midnight,October 8, 1949.

Entries are limited to those published in the continental United States

For posters, entry blanks, and complete information about the competitions, address

ChairmanManaging Committee

?4JJS-~eorgje We.tin ouwe Science Writinj ..Awarcl3

September 16, 1949, Vol. 110 17SCIENCE

1515 Massachusetts Aye., N.W. Washin ton 5, D. C. 'I,

September 16, 1949, Vol.110

Personnel PlacementCHARGES and REQUIREMENTS

for "PERSONNEL PLACEMENT" Ads1. Rate: 150 per word, minimum charge $3.00 for eachinsertion. If desired, a "Box Number" will be supplied,so that replies can be directed to SCIENCE for immediateforwarding. Such service counts as 8 words (e.g., a 25-word ad, plus a "Box Number", equals 33 words). Allads will be set in regular, uniform style, without display;the first word, only, in bold face type.For displap ads, using type larger or of a diffierent

style than the uniform settings, enclosed with separateborder rules, the rate is $15.00 per inch; no extra chargefor "Box Numbers".2. Advance Payment: All Personnel Placement ads. classi-fled or display, must be accompanied by correct remittance,made payable to SCIENCE. Insertion can not be madeuntil payment is received.3. Closing Date: Advertisements must be received bySCIENCE, 1515 Mass. Ave., N.W., Washington 5, D. C.,together with advance remittance, positively not later than14 days preceding date of publication (Friday of every week).

POSITIONS WANTED

Mathematician: M.A.; Completing Doctoral dissertation, de-sires teaching or research position. Box 290, SCIENCE. 9/16

Organic-Biochemist: Ph.D., January 1950, large Eastern univer-sity. Research experience in fat chemistry, mold metabolism, isola-tion of enzymes and identification of natural products. Publica-tions. Age 28. Veteran. Desires commensurate position. Box331, SCIENCE. 9/23

Ph.D. in Biological Chemistry: (minors; physical chemistry andgenetics); several years' teaching and research experience; investi-gation concerned application of radio-activity techniques in vitrostudies of protein synthesis in connection with genetic studies ofgrowth; prefers straight research or teaching and research; forfurther information, please write Burneice Larson, MedicalBureau, Palmolive Building, Chicago. X

Physiologist, Pharmacologist: Ph.D. Broad research, teachingand administrative experience in medical and general physiologyand pharmacology. Active research program now operating. WVillconsider appointment only in institution devoted to good teachingand research and not to petty politics. Box 330, SCIENCE. X

POSITIONS OPEN

Bacteriologist or Biochemist: (Ph.D. degree) Bacteriologist withexperience in biochemistry or biochemist with thorough knowledgeof bacteriology. Industrial experience desirable. The position en-tails research and development of industrial microbial processes;location Metropolitan New York area. State age, education, ex-perience, and salary level. Box 325, SCIENCE. 9/16

Chemist wanted by manufacturing concern in N. Y. Metropolitanarea, for research and development of products for textile processingand finishing. Work is mainly in laboratory with some fieldservice. Thorough knowledge of textile processes required. Stateage, education and qualification. Box 326, SCIENCE. 9/16

Positions Open:(a) Immunochemist or biochemist trained in immunology; dutiesconsist of supervising preparation of allergy extracts; considerableresearch; teaching hospital; $5200-$6200; East. (b) Bacteri-ologist: duties consist-of.s.upervising staff of six technicians; pro-cedures include medical'tacteriology, parasitology, serology; teach-ing responsibilities; East. (c) Biometrician: duties largely researchand consultation with other research workers, and, also, teaching ofone or two courses; East. (d) Pharmaceutical Chemist experiencedin compounding new dosage forms of drugs and, also, two chemistsexperienced in synthetic organic chemistry particularly in synthesisof drugs; research department, large company; Middle West. (e)Physiologist: state university; duties consist of teaching physiol-ogy to medical, dental and graduate students; excellent researchfacilities. (f) Director, clinical investigation; pharmaceutical in-dustry; preferably physician with graduate training in one of thespecialties; staff outstanding researchers. S9-3 Burneice Larson,Medical Bureau, Palmolive Building, Chicago. X

Pharmaceutical Chemistry: Professor for graduate courses anddirecting M.S. and Ph.D. research. New space and equipment.Adequate support. Teaching and industrial experience preferred.Excellent salary for demonstrated ability. Attractive climate andsmall city. Appointment anytime before September 1950. Dean,College of Pharmacy, University of Florida, Gainesville, Florida.

10/14

Personnel PlacementPOSITIONS OPEN

Pharmaceutical Research Chemist: Good opportunity available fora nlan 30-40 who can demonstrate marked professional ability inthe development of new pharmaceutical products. Alen with ex-perience in the manufacture of tablets, ampuls, liquids, ointments,and related products will be given preference. Initial appraisal ofrespondent will be based on completeness and content of resume ofacademic training, scope of experience, and evidence of possessingqualities as a leader. Position has good future with large mid-western pharmaceutical firm. Box 322, SCIENCE. 9/23

Research assistant: Bacterial metabolism. Full time, $2600-3000.Quantitative chemistry essential. M.S. preferred. University,Northeast. Box 327, SCIENCE. 9/16

Scientific Literature Research: For established Philadelphia ethicalpharmaceutical firm. Training in biochemistry or physiology.Read scientific journals to obtain information pertinent to companyproducts and projects, and ideas for new projects. Write litera-ture reviews on assigned topics of interest to Research Division.Conduct special literature searches, answer technical questions, etc.Send complete personal, educational and experience data to Box329, SCIENCE. 9/30

Spectroscopist: Excellent opening for an experienced band spec-ti oscopist with good theoretical background to carry out directfundamental spectroscopic studies relating to combustion processes.Publications encouraged. Salary open. Write: Personnel Adminis-trator, Jet Propulsion Laboratory, California Institute of Tech-tiology, 4800 Oak Grove Drive, Pasadena, California, giving detailsof training, experience, publications, and professional references.

10/7

18 SCIENCE

Fouad I UniversityFaculty of Engineering

V A C A N C YApplicants are invited for the post of Professor of Aero-nautical Engineering at the Faculty of Engineering,Fouad I University, Giza, Egypt.The salary offered is L.E. 1500 inclusive a year.The appointment will be on contract for three years, re-newable, and is terminable on one month's notice beinggiven on either side. A transfer allowance of one month'ssalary will be paid to the appointed canddate if resident inEurope or the U.S.A.The professor appointed will be charged with:a) The establishment of a two-year course in Aeronautical

Engineeringb) The design of a suitable Aeronautical LaboratoryApplications in duplicate wit. full details of qualilications,publications, researches, and experience should be sent to:

The, Secretary GeneralFuuad I Univercity -

Giza, Egypt

Pouad I UniversityFaculty of ScienceVACANC I ES

Applications- are- inaited for the posts of:Professor of GeologyProfessor of Botany

The appointment will be on contract for an initial periodof two years. The basic salary is L.E. 1500 per annum.

Expatriation and high cost of living allowances amountingto L.E. 648 per annum will be added and a 6% taxdeducted.Travelling expenses to Cairo will be paid to the appointedcandidate.Applications should submit particulars of their qualificationsand experience in teaching and research to:

The DeanFaculty of ScieneeFouad I University

Abbassia, Cairo, EgyptThe closing date for receipt of applications is October15th, 1949.

11

11 J1

September 16, 1949, Vol. 110

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WANTED Back copies of SCIENCE ....The AAAS would like to obtain back copies of SCIENCE

' -January 7 thru February 18, 1949.Second class postage will be refunded.

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September 16, 1949, Vol. 110

SCIENCE SUBSCRIBERS-

B~~~~ S.75POSTPAID

Scattered References?THIS IS THE ANSWER

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DON MISS...The October 7thEQUIPMENT ISSUE

The October 7th issue of SCIENCE will feature anunusually interesting and comprehensive review of thelatest developments in scientific instruments andequipment.Both the editorial and advertising pages of this specialissue will be of direct interest to the more than 33,000readers of SCIENCE who are responsible for pur-chases of scientific equipment and supplies for thecountry's leading educational institutions, industriallaboratories and research foundations.Advertising copy must be sent immediately in order tomake this all-important issue. Regular advertising rateswill apply (see Charges and Requirements, page 19).DON'T DELAY-SEND YOUR AD COPY NOWI

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