JijasSackusettsInstitute

Of echnology

OPERATIONS EVALUATION GROUP

Jenturing Beyondthe Confinesof Your DisciplineThe ultimate argument of the diplomat isstill the threat of force, the conduct of waris still the business of the soldier and sailor.But in this era of sensitive political situa-tions and nuclear peril, the immense com-

-plexities of armed combat have placed afew scientists in positions of uncommonresponsibility.

Imaginative scientists and mathemati-cians with advanced degrees are invited toshare in this uncommon responsibility withthe staff of the Operations EvaluationGroup of the Massachusetts Institute ofTechnology. Specifically you will providethe Chief of Naval Operations and Fleetcommanders with an analytical basis fordecision making on matters of tactics,strategy, composition of forces, employ-ment of weapons and equipment, andresearch and development needs.The appointments are permanent and

well remunerated, and the peripheral bene-fits are indeed worth exploring.Direct your inquiry to: Dr. J. H. Engel

MoLoloOPERATIONS EVALUATION GROUPMassachusetts Institute of TechnologyWashington 25, D. C.

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31 MARCH 1961 971

___ It's What's Inside That Counts!

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counting methods for suchmaterials as proteins, lipids,amino acids, tissue, body fluids,aqueous solutions, tritiatedwater, and carbon dioxide.

"IL _ ''''"'"In the first six months after thetransistorized Tri-Carb replacedits vacuum-tube predecessor, morethan a hundred installations weremade in 15 countries on fourIcontinents. More samples of tritium,carbon-14, and other alpha- andbeta-emitters are now beingcounted in the Packard Tri-Carb Spectrometerthan in any other instrument.

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978 SCIENCE, VOL. 133

man of the AEC's General AdvisoryCommittee, a post he had held for 4years. Johnson also served as chairmanof the commission's Board of SeniorReviewers from 1949 to 1956. He isbeing honored for meritorious servicein advancing the atomic energy pro-grams of the commission and of theUnited States.

Johnson is the second recipient ofthe AEC Citation, which was estab-lished in 1960 to honor persons not inthe employ of the commission. The ci-tation, accompanied by a symbolic me-dallion, will be presented in a cere-mony in Washington, D.C., late inApril.

Nine U.S. scientists who received1960 Borden Awards of a gold medaland $1000 for outstanding researchachievements are listed in an annualdirectory just released by the BordenCompany Foundation, Inc. A total of179 awards has been made by thefoundation since the program began in1937. The awards are administered byprofessional and scientific associations.The administering groups and the 1960award winners, with summaries of theirprincipal contributions, follow.

American Chemical Society. EugeneL. Jack, professor of dairy industry,University of California, for his studieson the composition, structure, physicalproperties, and nutritional values ofmilk fat.

American Dairy Science Association.Norman L. Jacobson, professor of dairyhusbandry, Iowa State University, forhis research contributions to dairy an-imal nutrition, including work on utili-zation of carbohydrates by dairy an-imals and the effects on dairy cattle offeed treated with antibiotics.

American Dairy Science Association.Mark Keeney, professor of dairy man-ufacturing, University of Maryland, fora number of significant research contri-butions on the chemistry of butterfat.

American Home Economics Associa-tion. Marian E. Swendseid, associateprofessor of nutrition and physiologicalchemistry, University of California, forher research in vitamin and proteinnutrition.

Association of American MedicalColleges. Robert F. Pitts, professor andchairman of the department of physiol-ogy, Cornell University Medical Col-lege, for his fundamental contributionsto an understanding of renal tubularfunctions.American Institute of Nutrition. R.

Gaurth Hansen, professor and head of

1006

the department of agricultural chemis-try, Michigan State University, for aseries of studies, in the general fieldsof biochemistry and nutrition, that havecontributed to a clearer understandingof the nutritional role of milk sugar.American Academy of Pediatrics.

Harold E. Harrison, pediatrician-in-chief, Baltimore City Hospital, andassociate professor, Johns Hopkins Uni-versity School of Medicine, for his fun-damental research on vitamin D and itsrole in the regulation of the transportof calcium and phosphorus.

Poultry Science Association. Freder-ick W. Lorenz, professor of poultryhusbandry and poultry physiologist inthe Experiment Station, University ofCalifornia at Davis, for research con-tributions that are basic to the use ofestrogens in poultry production and toartificial insemination in turkeys.American Veterinary Medical Asso-

ciation. Henry H. Dukes, professoremeritus of veterinary physiology, Cor-nell University, for his studies in thegeneral area of animal physiology,which have served as a starting pointfor many investigations into the meta-bolic diseases of cattle. He was alsocited for his long and productive careeras a -teacher and trainer of researchworkers.

Donn Rosen has been appointed as-sistant curator in the department ofichthyology at the -American Museumof Natural History, New York. Forthe past year he has been with theUniversity of Florida at Gainsville,where he held the posts of assistantprofessor of biology and assistant cura-tor of biological sciences at the uni-versity's Florida State Museum.

Werner K. Weihe, chief of the FarInfrared Branch at the U.S. Army En-gineer Research and Development Lab-oratories, Fort Belvoir, Va., has beennamed executive editor for the UnitedStates for Infrared Physics, an interna-tional research journal to be publishedby Pergamon Press, Ltd., England.Other editors of the new journal in-clude M. Migeotte of Belgium, T. S.Moss of England, Sidney Passman ofthe United States, and an internationaleditorial board. A regional editor forthe U.S.S.R is to be appointed.

Margaret H. Sloan, National BloodProgram executive and staff director ofa recent medical research study for theSenate Appropriations Committee, hasbeen appointed special assistant to the

director of the National Cancer Insti-tute. She will be active in program de-velopment, particularly in the interna-tional field. Dr. Sloan has earned in-ternational recognition for her serviceas assistant director and later directorof advisory services to the NationalBlood Program of the National Acad-emy of Sciences-National ResearchCouncil, which she joined in 1950.

Recent Deaths

M. Hiflel Feldman, New York,N.Y.; 72; dentist who was a pioneer inoral surgery; in 1917 organized thedental department at Lincoln Hospital,where for many years he trained in-terns in oral surgery; wrote the text-book Exodontia; 1 Mar.

James 0. Foley, Birmingham, Ala.;64; since 1947 professor of anatomyat the University of Alabama MedicalCenter; a former department chair-man, he was associate dean of theMedical College from 1951 to 1956;28 Feb.

Irving Hyman, Buffalo, N.Y.; 52;chief of neurology at Buffalo GeneralHospital and chairman of the neu-rology department at the University ofBuffala Medical School; 7 Mar.Asa S. Kinney, South Hadley, Mass.;

87; associate professor emeritus ofbotany at Mount Holyoke College; 2Mar.

Philip Schwed, Baltimore, Md.; 38;research physicist at the ResearchInstitute for Advanced Studies (1956-1961); principal scientist in the insti-tute's cosmic radiation program; con-ducted theoretical studies in particleand solid-state physics; formerly withLewis Laboratory; 2 Feb.

Joseph C. Turner, New York, N.Y.;51; professor of medicine at the Col-lege of Physicians and Surgeons ofColumbia University; director of theClinical Pathology Laboratories andhead of the hematology clinic atColumbia-Presbyterian Medical Center;author of a textbook on clinical path-ology; 2 Mar.

Carl J. Warden, De Land, Fla.; 70;former professor of psychology atColumbia University; headed the ani-mal psychology laboratory at Columbiafor some years, later had charge ofthe Laboratory of Comparative Psy-chology and dealt largely with humanpsychology; wrote The Emergency ofHuman Culture and served as associateeditor of the Journal of G-iirtic Psy-chology; 28 Feb.

SCIENCE, VOL. 133

student in our colleges and universities.Then perhaps interest in beetles wouldbecome commensurate with the num-bers of species. I think this manualcould arouse such interest. It would getthe student over the first discouragingstumbling blocks: numbers of species,complexity of terms, and the great va-riation of form. Perhaps it is the wealthof illustrations that makes the volumea fine manual. And you can bet that alot of experienced coleopterists will beflipping those 85 plates when trying toidentify specimens in groups outsidetheir specialty. Caveant Coleoptera!

T. J. SPILMANU.S. Department of Agriculture,Washington, D.C.

Holzanatomie der Europaischen Laub-holzer und Straucher. Pal Gregus.Akademiai Kiado, Budapest, Hun-gary, 1959. 330 pp. + plates. Illus.

This large and thorough volume con-stitutes a major contribution to theliterature on the identification of woodand woody species on the basis ofxylotomy. It is a presentation of photo-micrographs, diagnostic pen and inksketches, detailed xylotomical descrip-tions, summary tables of characteristics,and keys to the identification ofEuropean deciduous trees and shrubsbased on the structure of their wood.As such, it is a revised and enlargededition of the author's successful Bes-timmung der mitteleuropaischen Laub-holzer und Strducher auf xylotomischerGrundlage which is now out of print.The book is divided into a general

section which treats the preparation ofmaterial and the fundamentals of thexylotomical determination of woodyspecies, and a detailed section whichtreats 154 genera of 61 families of theMonochlamydeae, Dialipetalae, andSympetalae. The detailed section isdivided into an expanded key to speciesand a thorough description of theanatomical features of the wood ofeach species treated. It is followed by307 plates (9 by 13 inches) of photo-micrographs and drawings of- the 303species treated. Six summary (Merk-maliibersicht) tables are included in-side the back cover of the volume.The diagnostic key is presented in

both German and English and uses bothqualitative and quantitative character-istics. It is elaborated to include minorvariations within species and specimens;I found it to be quite workable.31 MARCH 1961

The descriptions of the xylotomicalfeatures of the wood of each speciesare presented in German, but they canbe readily translated by anyone whohas a command of the basic Germanvocabulary of wood anatomy. Thefeatures of cross, radial, and tangentialsections are presented in great detail.The plates are large and exception-

ally well done. Each plate shows fourphotomicrographs (2 by 3 inches) anda series of pen and ink sketches of diag-nostic features. The photomicrographsinclude a cross section (x 30), a crossand a tangential section (X 100), anda radial section (X 200). Whereapplicable, pen and ink sketches aregiven of vessels, tracheid shaped vessels,tracheids, wood fibers, fiber tracheids,wood parenchyma cells, ray cells, sup-plementary fibers, and septate fibers.

This volume, along with its com-panion, the author's Identification ofLiving Gymnosperms on the Basis ofXylotomy, will provide data and fill aneed in the several areas of plant sci-ence concerned with wood and woodyplants. It provides a comprehensiveview of the structure of woody plants,for general botanical purposes. It servesas an exhaustive source of data foradvanced study of wood anatomy andits relationship to phylogeny. Finally,it provides a comprehensive referencemanual for workers in the fields ofplant anatomy, wood technology, for-estry, paleobotany, and related areas.

ELWOOD B. EHRLEDepartment of Science,State University College of Education,Geneseo, New York

Staining Methods. Histologic and histo-chemical. J. F. A. McManus andRobert W. Mowry. Harper (Hoeber),New York, 1960. viii + 423 pp.Illus. $10.

At a time when the value of the in-formation that can be derived fromstudying cells and tissues has been gen-erally recognized by many disciplines,a book "integrating the newer methodsof tissue and cell examination intohistologic techniques" is highly wel-come. The authors present here aselection of the methods they considerto be most valuable for the proper stain-ing of histologic preparations. The se-lection, based on the authors' personalexperience with the different techniques,includes well-established earlier pro-cedures as well as newer methods-for

instance, staining techniques used inelectron microscopic studies -whichhave recently been improved by Strug-ger, who applied additional "staining"with uranium salts for the detection ofmicrostructures in cell constituents.A discussion of the different methods

of preparing the tissue for stainingprecedes the chapters on specific meth-ods for study of the constituents of cellsand tissues and for the study of specialcells, tissues, and organs. Two ap-pendixes-one giving an outline ofbasic techniques and another giving dilu-tion and solubility tables, molar values,and buffers-increase the monograph'svalue for routine work and research.The book continues the tradition of

the famous standard works by Mallory,Bertrand, Lillie, and Glick, to mentionjust a few of the earlier and the morerecent authors, and it will definitelyfill the need of a modern tissue labora-tory.

A. T. KREBSDepartment of Biology,University of Louisville

Miscellaneous Publications(Inquiries concerning these publications shouldbe addressed, not to Science, but to the pub-lisher or agency sponsoring the publication.)

Large-Scale Ground-Water Develop-ment. Water Resources Development Cen-tre. United Nations, New York, 1960. 84pp. Paper, $1.25. The first of a series ofstudies to be undertaken by various UNorganizations. Contents cover basic con-siderations relating to use, stages of de-velopment, economic and financial as-pects, the role of governments, and rightsand other legislative matters.Research in Wisconsin. A technical di-

gest of research results in fish manage-ment, forestry, and game management,1959. Ruth L. Hine, Ed. Wisconsin Con-servation Dept., Madison 1, 1960. 104 pp.

Scientific and Technical Personnel inAmerican Industry. Report on a 1959survey. Prepared by the U.S. Departmentof Labor. National Science Foundation,Washington, D.C., 1960 (order from theSupt. of Documents, GPO, Washington25). 66 pp. $0.45. American industry em-ployed approximately 800,000 scientistsand engineers in January 1959. Engineerswere found to number 615,000 (80 per-cent of the survey); the 149,000 scientistsincluded 72,000 chemists, 18,000 life sci-entists, 15,000 physicists, 15,000 earthscientists, and a smaller number in otheroccupational groups.

Soviet Education Programs. Founda-tions, curriculums, and teacher prepara-tion. Bulletin 1960, No. 17. William K.Medlin, Clarence B. Lindquist, and Mar-shall L. Schmitt. U.S. Office of Education,Washington, D.C., 1960 (order from Supt.of Documents, GPO, Washington 25).299 pp. $1.25.

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31 MARCH 1961 1023

1: :: .:

MeetingsEntomology and Human Welfare

Frank S. Arant, head of the depart-ment of zoology and entomology, Ala-bama Polytechnic Institute, has beenchosen by the governing board of theEntomological Society of America as

the society's president for 1961.- Ac-ceptance of a foreign assignment byH. M. Harris, of Iowa, president-electin 1960, led to his resignation and theselection of a president by board actionrather than by ballot of the member-ship. Robert Glen, director, General

Here is your opportunity to extendthe benefits of AAAS membership. . . including a subscription toSCIENCE . . . to relatives, friendsor associates.The AAAS is the largest federationof scientific organizations . . . It was

established 113 years ago and now

Research Branch, Canada Departmentof Agriculture, Ottawa, is president-elect for 1961.The 1960 Atlantic City meeting of

the Society, held 28 November through1 December, drew a larger attendance(859) than any previous meeting of thesociety other than joint meetings withCanadian societies. The theme of themeeting was, "Entomological Con-tributions to Human Welfare."M. P. Jones, entomologist with the

extension service of the U.S. Depart-ment of Agriculture, the society's presi-dent for 1960, delivered the presidentialaddress, "Selling insect control informa-tion." The John Henry Comstock

has over 60,000 individual members.JUST FILL IN AND MAIL THEFORM BELOW. (Whether youare a member or not, you may ordera gift membership for someone else.Or you may use this same form to

apply for a personal membership in

your own name.)

DR. RAYMOND L. TAYLOR, Associate Administrative SecretaryAmerican Association for the Advancement of Science1515 Massachusetts Avenue, NW, Washington 5, D.C.

Please extend AAAS membership to: (please print or typewrite)

Full name ..........................................................

Address ............................................................

Professional or research specialty ..............................'

Title.

Institutional or company affiliation ......................................

Highest degree (year and institution) .............................. .

Check one:

( ) Check or money order enclosed for $8.50 annual membership dues.( ) Please bill me at address shown below.( ) Please bill company at address shown below.

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Your signature.Date ...........

1024

memorial lecture, "The challenge ofinsecticide resistance," was delivered byA. W. A. Brown of the University ofWestern Ontario. J. George Harrar, vicepresident of the Rockefeller Founda-tion, addressed a plenary session onfood additives and public health.

Dionyz Blaskovic, director of the In-stitute of Virology, Blatislava, Czecho-slovakia, and K. C. Willett, director ofthe West African Institute for Trypan-osomiasis Research, Kaduna, NorthernNigeria, were participants in a sym-posium on biological transmission ofdisease agents. The Rockefeller Founda-tion made possible the attendance ofthese two speakers.

Lester G. MacNamara, chief of theNew Jersey Bureau of Wildlife Manage-ment, also addressed an evening plenarysession, on the role of chemicals inwildlife conservation.

There were 186 submitted papers, 14symposia and panel discussions, and 19invited speakers; the program was ar-ranged by Ralph W. Sherman, U.S. De-partment of Agriculture, programchairman. L. G. Merrill, Jr., of RutgersUniversity, was chairman of the localarrangements committee.

RALPH W. SHERMANU.S. Department of Agriculture,Washington, D.C.

Forthcoming Events

April23-27. Society of American Bacteriolo-

gists, Chicago, Ill. (E. M. Foster, 311Bacteriology, Univ. of Wisconsin, Madi-son)

23-28. American Soc. of Hospital Phar-macists, Chicago, Ill. (J. A. Oddis, 2215Constitution Ave., NW, Washington 7,D.C.)

24-26. Aerospace Medical Assoc., 32ndannual, Chicago, Ill. (W. J. Kennard,Secretary-Treasurer, c/o Washington Na-tional Airport, Washington, D.C.)

24-26. American Psychoanalytic Assoc.,annual, Philadelphia, Pa. (J. N. McVeigh,36 W. 44 St., New York 36)

24-26. International Acad. of Patholo-gy, 50th annual, Chicago, Ill. (Miss M.Davis, Intersociety Committee on Pathol-ogy Information, 1785 Massachusetts Ave.,NW, Washington 6, D.C.)

24-27. American Assoc. of PetroleumGeologists, Denver, Colo. (G. V. Cohee,U.S. Geological Survey, Washington 25,D.C.)

24-27. American Physical Soc., Wash-ington, D.C. (K. K. Darrow, 538 W. 120St., New York 27)

25-28. Society of Economic Paleontolo-gists and Mineralogists, Denver, Colo.(J. Imbrie, Dept. of Geology, ColumbiaUniv., New York, N.Y.)

26-28. American Assoc. of Pathologistsand Bacteriologists, 58th annual, Chicago,Ill. (Miss M. Davis, Intersociety Commit-tee on Pathology Information, 1785Massachusetts Ave., NW, Washington 6,D.C.)

27-28. Diseases in Nature TransmissibleSCIENCE, VOL. 133

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31 MARCH 1961

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Colorimetric Determination--OF PHOSPHOHEXOSE

ISOMERASE@ 490 my

(Per Bodansky)'Serum Phosphohexose Isomerase has been reported tobe occasionally elevated in all types of cancer and particu.larly in cancer of the breast and prostate with metastases.2More consistent elevations were observed in viral hepatitiswhile substantially normal values were observed in othertypes of liver disease.' However, diagnostic significance hasnot yet been established.

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Serum Isocitric Dehydrogenase has been reported to beof considerable significance in viral hepatitis and otherconditions involvina thek livar snacific.liv ICDu e rnnrtil§.,*..vw-..yt -owv live¢ zpLiyi;uiiy. i%v is reporreato remain normal in Myocardial Infarction and malig-nancies not involving the liver." The determination ofIsocitric Dehydrogenase at 340 m,u has already becomeroutine in many laboratories using Sigma Kit. No. 150.This new Colorimetric Procedure No. 175 now promisesto make the procedure considerably more widespread.

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RE FE R E NC ES:1. 0. Bodansky, Cancer, 7, 1191, (1954).2. 0. Bodansky, Cancer, 8, 1087, (1955).3. Bruns & H:nsberg, Biochiim, Ztschr., 325, 532, (1954).4. Taylor & Friedman, Clin. Chem., 6, 208, (196e).5. Sterkel, etal., J. Lab. & Clin. Med., 52, 176, (1958).

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DATA SERIES Evaluating Spectrophotometer Performance

WAVELENGTH accuracy and reproducibility:The precision with which the indicated wavelength corresponds to the true wavelength ofdispersed radiation (accuracy) and repeats this indication (reproducibility).

Cary Model 14records spectra

0

accurate to 4A,

reproducible0

to O.5A over its 28,000 A range

High wavelength accuracy assures recording of absorption peaks at theirtrue wavelength. This is essential for differentiation of similar samplesor identification of unknowns. It is equally important for quantitativemeasurements on mixtures where overlapping bands may distort bandcontours. The high wavelength accuracy of the Cary Model 14 is shownin the spectrum of mercury emission lines which appear at 3906.4, 4046.6,and 4077.8 angstroms. As shown in Figure 1, these are recorded to within2A absolute or better.

Since sample absorbance is a function of wavelength, high wvavelengthreproducibility is essential to insure reliable quantitative results. Theexcellent reproducibility of the Cary Model 14 is illustrated in both Figures1 and 2 which show three superimposed records (with the baselinesarbitrarily shifted after each record). The two peaks (5790.7 A and5769.6A) shown in Figure 2 were recorded on a greatly expanded wave-length scale in order to observe any small error. (It is interesting tonote that the scale expansion used would require a chart over 300 feetlong to record the entire wavelength range of the Model 14). The maximumdeviation between the three records is only about 0.35A.

Wavelength accuracy and reproducibility are just two of several impor-tant criteria on which spectrophotometer performance should be based.Others include: Resolution; photometric accuracy and reproducibility;stray light. Because the Cary Model 14 excels in each of these performancecriteria, it is regarded as the finest instrument of its kind. A descriptivebrochure is yours for the asking. Write for data file E22-31

APPLIED PHYSICSCORPORATION2724 South Peck RoadMonrovia, California

to Man, 11th annual southwestern conf.,College Station, Tex. (F. P. Jaggi, Jr.,Agricultural and Mechanical College ofTexas, College Station)

27-28. Health Education Conf., NewYork Acad. of Medicine, New York.N.Y. (I. Goldston, 2 E. 103 St., NewYork 29)

27-29. American Acad. of Neurology(members and guests), Detroit, Mich.(Mrs. J. C. McKinley, 4307 E. 50 St.,Minneapolis 17, Minn.)

27-29. Wildflower Pilgrimage, 11th an-nual, Great Smoky Mountains Natl. Park,Tenn. (A. J. Sharp, Dept. of Botany, Univ.of Tennessee, Knoxville)

27-30. Congress of Laboratory Medi-cine, Berlin. (W. Massmann, Rubensstr.125, Berlin-Friedenau, Germany)

27-5. American Psychiatric Assoc., an-nual, Philadelphia, Pa. (D. Blain, 170018 St., NW, Washington 6)

28-30. American Psychosomatic Soc.,18th annual, Atlantic City, N.J. (M. F.Reiser, 265 Nassau Road, Roosevelt,N.Y.)

30-4. Aero/Space InstrumentationSymp., 7th annual, Dallas, Tex. (W. J.Gabriel, Route 3, Box 36, Fort Worth,Tex.)

30-4. Electrochemical Soc., Indian-apolis, Ind. (R. K. Shannon, 1860 Broad-way, New York 23)

30-6. Conference on Internal Medicine,Nassau, Bahamas. (Bahamas Conferences,P.O. Box 1454, Nassau)

May

1-3. American Oil Chemists' Soc., St.Louis, Mo. (K. F. Mattil, Swift and Co.,U.S. Yards, Chicago 9, Ill.)

2-3. American Pediatric Soc., AtlanticCity, N.J. (C. M. Riley, Denver GeneralHospital, Denver 4, Colo.)

2-3. Association of American Physi-cians, Atlantic City, N.J. (P. B. Beeson,Yale Univ. School of Medicine, NewHaven 11, Conn.)

2-5. Criticality Control in Chemicaland Metallurgical Plant, intern. symp..OEEC, Karlsruhe, Germany. (EuropeanNuclear Energy Agency, 38, BoulevardSuchet, Paris 16, France)

2-6. American Assoc. on Mental De-ficiency, Cincinnati, Ohio. (N. A. Dayton,Mansfield Training School, Mansfield De-pot, Conn.)

3-5. Nuclear Applications in SpaceConf., Gatlinburg, Tenn. (J. J. Harford,American Rocket Soc., 500 Fifth Ave..New York, N.Y.)

3-6. American Goiter Assoc., Philadel-phia, Pa. (J. C. McClintock, 702 MadisonAve., Albany 8, N.Y.)

3-6. Midwestern Psychological Assoc.,Chicago, Ill. (I. E. Farber, Dept. of Psy-chology, State Univ. of Iowa, Iowa City)

3-7. Student American Medical Assoc..Chicago, Ill. (R. F. Staudacher, 430 N.Michigan Ave., Chicago 11)

4-5. Human Factors in Electronics, 2ndnatl. symp., Arlington, Va. (H. P. Bir-mingham, Human Engineering Develop-ment Section, U.S. Naval Research Lab-oratory, Washington 25)

4-5. Society for Pediatric Research, At-lantic City, N.J. (C. D. West, Children'sHospital, Cincinnati 29, Ohio)

4-6. American Ethnological Soc., Co-

lumbus, Ohio. (Miss N. F. S. Woodbury,Arizona State Museum, Univ. of Arizona,'rucson)

4-6. American Philosophical Assoc.,western division, St. Louis, Mo. (L. E.Hahn, Washington Univ., St. Louis 30,Mo.)

4-6. American Soc. of Human Genet-ics, Atlantic City, N.J. (W. J. Schull, 1133E. Catherine St.. Ann Arbor. Mich.)

4-6. New York State PsychologicalAssoc., annual, Rochester. (H. P. Iker,Strong Memorial Hospital, Room R-201,260 Crittenden Blvd., Rochester 20)

4-6. Pediatric Sulrgery, symp., NewYork, N.Y. (Office of the Associate Dean,New York Univ. Post-Giraduate MedicalSchool, 550 First Ave., New York 16)

4-6. Society for American Archaeol-ogy, Columbus. Ohio. (J. B. Wheat, Univ.of Color-ado Museum, Boulder)

4-7. Hypertension Symp. (by Hahne-mann Medical College), Philadelphia, Pa.(Hahnemann Medical College and Hospi-tal, 235 N. 15 St., Philadelphia 2)

5-6. Population Assoc. of America,New Yor;k, N.Y. (K. B. Mayer, Dept. ofSociology and Anthropology, BrownUniv., Providence 12, R.I.)

5-7. American Soc. of Internal Medi-cine, Miami Beach. Fla. (G. T. Bates, 350Post St., San Francisco 8. Calif.)

5-8. American Psychoanalytic Assoc.,Chicago, Ill. (Mrs. H. Fischer, 1 E. 57 St.,New York 22)

6-7. Academy of Psychoanalysis, an-nlLual, Chicago, Ill. (J. H. Merin, 49 E. 78St., New York 21)

6-9. Circuit Theory, 5th midwesternsymp., Urbana, 111. (M. E. Van Valken-burg, Dept. of Electrical Engineering,Univ. of Illinois. Urbana)

7-10. American Inst. of Chemical En-gineer-s, Cleveland, Ohio. (J. F. Van Ant-werpen, ALChE, 25 W. 45 St., New York36)

7-1i. Institute of Food Technologists,New York, N.Y. (C. S. Lawrence, 176 W.Adams St., Chicago 3, 111.)

7-12. Medical Library Assoc., Inc.,Seattle, Wash. (Miss R. J. Mann, MayoClinic Library, Rochester. Minn.)

7-12. Society of American Bacteriol-ogists, 62nd annlual1, Kansas City, Mo.(E. M. Foster, 3 11 Bacteriology, Univ. ofWVisconsin. Madison 6)

7-12. Society of Motion Picture andTelevisionl Engineers. Toronto, Canada.(SMPTE, 55 W. 42 St.. New York 36)

8-9. Titrimetric Methods of Analysis,symp., Cornwall, Ontario, Canada. [J. R.McCal lIm, Courtauklds (Canada) Ltd..Cornwall]

8-10. Aerospace Electronics Conf.,13th annual natl., Dayton, Ohio. (R. G.Stimmel, Institute of Radio Engineers, 1 E.79 St., New York 21)

8-10. Instrument Soc. of America,Power Instrumentation Symp., 4th natl.,Chicago, Ill. (H. A. Van Wassen. Dui-quiesne L-ight Co., Pittsburgh 19, Pa.)

8-10. Mathematical Theories of Bio-logical Phenomena, symp., New York,N.Y. (N. Rashevsky, Committee onMathematical Biology, 5741 Drexel Ave.,Chicago 37, Ill.)

8-12. American College of Physicians,42nd annual, Miami Beach, Fla. (ACP,4200 Pine St., Philadelphia 4, Pa.)(See issue of 17 Februtary for comprehensive list)

NEWEST FISHER GLASSWARE WASHERREDUCES LAB "HOUSEKEEPING" TIME,COSTS. No reason for even the small lab to waste time doing"dishes" by hand, run risk of breakage. New, medium-capacityFisher Standard Washer gets average loads sparkling clean . . .

quickly, economically, safely. Easy to load; easy to operate-con-venient selector switch controls wash cycle. Saves detergent, too.

(Ideal supplement in large labs for the big-capacity Fisher Deluxe

Washer.) Both washers available from your nearest Fisher branch.Or for data-packed booklet, write Fisher Scientific Company, 139Fisher Building, Pittsburgh 19, Pa., for free Bulletin FS-215. J 161

F FISHER SCIENTIFICWorld's Largest Manufacturer-Distributor ofLaboratory Appliances & Reagent ChemicalsBoston * Chicago * Fort Worth * Houston * New York . Odessa, TexaSPhiladelphia * Pittsburgh * St. Louis i Washington . Montreal i Toronto

EWS: IABOUT

FLAME| PHOTOMETRY- PMQ II

The Zeiss PMQ 11 Spectrophotom-eter with flame accessories isparticularly useful for the rapidanalysis of weak concentrations.The exceptional spectral selec-tivity, high sensitivity and con-venient direct reading operationpermit many normally difficultdeterminations such as calcium.Sample requirements are nominal.

BRINKMANNI

New ProductsThe iniformation reported her-e is obtainied froon

mnanufocturers anid from othler sources conisideredto be reliable. Neithler Science nior thle writer as-sumies responsibility for the accuracy of t ie iii-forojationi. All iniquiries conzcerninig ite in listedshotuld be oddres.sed to thle mtlanuitfactutrer. In-

Icli(de the departmtienit nionber in your inquiry.

* RECORDING SPECTROPHOTOMETER iSdesigned for analysis of saniples at teni-peratures up to 1000°C and higher.Three of the compartment walls of thesaniple cell are water cooled; free spaceinside the conipartment is 1 6 in. alongthe optical path. The instrument utilizesreverse beam operation throughout itsrange. It is designed to eliminate nieas-urement errors resulting froni energyoriginating in the saniple which mightbe within the range of the detector.Range of the instrument is 1860 A to2.65 ,u. Resolution is 1.5 A over mostof the ultraviolet and the visible range,and 4 A in the near infrared. Straylight is said to be less than 0.001 per-cent over nmost of the range and 0. per-cent at the range limits. Photometricerror of absorption measurements due tothermal radiation from cells up to10000°C is less than 0.001 absolute.Teniperatures above 10000°C may beused at some sacrifice to instrumentnoise. (Applied Physics Corp.. Dept.Sci138. 2724 S. Peck Rd.. Monrovia.Calif.)

* AUTOMATIC CELL COUNTER counts redor white blood cells and gives a directindication of the count on a panel meterin 25 sec. The instrument uses a highdilution ratio which permits individualcells to be sensed as they pass throughan inspection chamber. The panel meteris calibrated with two scales: one forred-cell counts from 0 to 7.4 X 10'per cubic millimeter; another for white-cell counts froni 0 to 25,000 per cubicniillinieter. The total number of cellssampled is approximately 50 tinmes thatof a manual count. Facilities are pro-vided for checking instrument calibra-tion. (Sanborn Co., Dept. Sci136, 174Wynian St., Waltham 54, Mass.)

* HARMONIC MOTION TEST TABI E SUP-ports an inertial load of 0.05 in. lb secand a static load of 10 lb while oscillat-ing at frequencies of 0 to 30 cy/sec andthrough aniplitudes of +6°. Amplitudeis mechanically variable by a lead screwwith sensitivity of 120° rotation for 0.

amplitude change; frequency is changedby a variable speed drive. Maximuniamplitude error is said to be +12 secof arc, maximwum frequency deviation±+1 percent, and maximum harnionicdistortion + percent. A fail-safe mech-anism cuts off power if an incorrectcombination of amplitude and fre-quency is set. (Power-Tronic Systenis,Inc., Dept. Sci142, Pine Court, NewRochelle, N.Y.)

1028

* SONAR SOUNDING SET indicates depthfrom 5 to 100 ft or 5 to 100 fathoms.Accuracy is said to be -+-3 percent offull scale on either range. An automaticlow-water alarm may be set to operatebetween 5 and 30 ft or 5 and 30 fath-oms. The equipment consists of a re-mote indicator and control box; a trans-mitter, receiver, and power supply box;and a through-the-hull transducer. Op-erating temperature range of the tran-sistorized unit is 0° to 50°C. (GeneralPrecision Inc., Dept. Sci l14, 1150McBride Ave., Little Falls, N.J.)

* CONTINUOUS-WRITING STREAK CAM-ERA produces an uninterrupted streakimage 50 in. long on 35-mm film. Writ-ing rate is 9 mnim/sec at a maximummirror speed of 2600 rev/sec; timeresolution is 5 X 10' sec or better;minimum total writing time is 145 ,usecThe beryllium rotating mirror is saidto be essentially distortion free atoperating speeds. The optical systempermnits operation in the ultravioletregion. (Beckmnan & Whitley. Inc., Dept.Sci129, San Carlos, Calif.)

* VACUUM-TUBE VOILTMETER for a-cmeasuLrenients is said to provide ac-curacy of -4 1 percent. The instrumenitconsists of a rectangular meter havinga 4.5-in. mirror-backed scale. Standardranges are available in single-scalesensitivities ranging from 10 mv to300 v. Input inipedance is 1 megohm;frequency range is 50 cy to 50 kcy/sec.Power requirenient is 6.3 volts at 0.5amp and 200 volts d-c. (Trio Labora-tories Inc.. Dept. Sci 109. Plainview,N.Y.)

* WIDE-SCREEN FILM VIEWER for 16-mm film features motorized film drive.remote operator control, and mnagnifica-tion of 20. The operator can locate dataof interest by using a push button totraverse the film in either direction at120 cm/sec. Data can be viewed in de-tail at speeds continuLously variable be-tween 0 and 1.3 cm/sec. A film area ol14.5 by 35 mm is projected; 50- to 200-ft reels are accommnodated. Distortion issaid to be not mlore than + 1 percent.(Geotechnical Corp., Dept. Sci 1 34.3401 Shiloh Rd., Garland. Tex.)

* MICROFOCUS X-RAY UNIT nmanufac-tured by Hilger and Watts can be sup-plied with a choice of tubes and gunsto provide a 40-/,. spot, a 1.4-mm by100-- line, or a 6-mm by 100-a line.with tube loading up to 50 kv, 10 ma.The generator can be Lised with themanufacturer's Y125 recording diffrac-tometer. (Engis Equipment Co., Dept.Sci 1 39, 43 1 S. Dearborn St., Chicago5, Ill.)

JOSHUA STERNNational Burealu of Standards,Was/tington, D.C.

SCIENCE, VOL. 133

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