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$H:Po LIQUI10 TSINTLATIN SPVT OMETE - · PDF fileBell and J. K. Grant, ... Electromagnet Kit * 4" x4" poles variable 0-14 cm. gap * field exceeds 1 weber at 0.5 cm. ... 1963 KITS Catalog

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THIS rsoW) THLt[A$H:Po 41 d i, UA 4

LIQUI10 TSINTLATIN SPVT OMETE SHere-in two entirely new series of instruments-are the mostadvanced liquid scintillation counting systems ever made.Series 3000 and 4000 TRI-CARB Spectrometers incorporategreatly improved optical, electronic, and mechanical com-ponents to provide research workers counting alpha, beta,and gama-emitting isotopes with the ultimate in quality,reliability, and user convenience.

Significant improvements in both series include: a new con-cept in detector and shielding design; matched 13-stagephotomultiplier tubes; built-in automatic background sub-traction; completely new, high speed solid-state circuitrydesigned for maximum linearity and stability; fast, serial entryprintout compatible with modern data processing systems.

SPECIFIC FEATURES OF EACH SERIES:3000 SERIES Manual, semi-automatic, or automatic(200 sample capacity) operation; 1, 2, or 3 channels; mobileroom temperature or temperature controlled console; op-tional data printer or printing calculator.,4000 S ERIES Completely automatic; 2 or 3 channels;revolutionary sample changer handles complete trays ofsamples instead of individual vials. As many as 15 trays, eachholding 24 samples can be loaded into changer for automaticcounting. Program may be interrupted at any time for specialtray counts. Optional data printer or printing calculator.for complete details, call your Packard Sales Engineer, or write for Bulletins.

Pc3cIikard I PACKARD INSTRUMENT COMPANY, INC._nY ADA!R * A (ODAir- 11 I lftilC * A.EA orrC- f34teA.An=

book, however, in this one some of therigor seems to have disappeared withthe verbosity. As in many other text-books, a new concept is sometimes in-troduced by analogy with a more fa-miliar one. This correlation does no

harm and may increase the student'sunderstanding, but in several cases

Wehr and Richards have provided very

little definition of terms beyond thecomparison. In general, they havemade the material quite easy to read,and their next edition could be an

example of lucid writing for others toemulate.My principal concern is for the role

of a course in a physics curriculum atthe college level, for which this textwould be suitable. By actual page count,a minimum of 142 pages of text andsolved problems duplicates the materialin an introductory text that is widelyused in liberal arts courses. In this case

duplication means that no additionalfacts, no additional reasons justifyinga physical model, or no additional limi-tations inherent in a physical modelare presented.The new material presented in the

remaining 214 pages (of which many

pages are problems that illustrate thetext material) seems too little to justifythe use of this book as the text for an

additional semester or quarter of workbeyond the introductory general phys-ics course, even though the advertisingcover suggests this possible use for thebook. The book does fulfill another pur-

pose stated on its cover-that of pro-

viding suitable supplementary readingfor an introductory general physicscourse.

It is to be hoped that the increase inthe amount of mathematics taught inhigh schools will remove the need forcollege physics textbooks that avoidmathematical description of phenom-ena. No one has much insight into thescientist's description of the universeunless he understands a little of thealgebraic language in which that de-

scription is stated.R. N. LITTLE

Department of Physics,University of Texas

New Books

Biological and Medical Sciences

Advances in Carbohydrate Chemistry.vol. 17. Melville L. Wolfrom and R.Stuart Tipson, Eds. Academic Press, NewYork, 1962. 516 pp. Illus. $16.

Advances in Fluorine Chemistry. vol. 3.M. Stacey, J. C. Tatlow, and A. G.

24 MAY 1963

Sharpe, Eds. Butterworth, Washington,D.C., 1963. 287 pp. Illus. $9.95.

Advances in Protein Chemistry. vol. 17.C. B. Anfinsen, Jr., Kenneth Bailey, M.L. Anson, and John T. Edsall, Eds. Aca-demic Press, New York, 1962. 428 pp.Illus. $14.American Drug Index, 1963. Charles 0.

Wilson and Tony Everett Jones. Lippin-cott, Philadelphia, 1963. 829 pp. $6.75.

Analytical Microbiology. FrederickKavanagh, Ed. Academic Press, New

York, 1963. 723 pp. Illus. $22.Animal Species and Evolution. Ernst

Mayr. Harvard Univ. Press, Cambridge,Mass., 1963. 813 pp. Illus. $11.95.Approaches to the Study of Aphasia. A

report of an interdisciplinary conferenceon aphasia. Charles E. Osgood and Mur-ray S. Miron, Eds. Univ. of Illinois Press,Urbana, 1963. 222 pp. Illus. $5.An Atlas of Ultrastructure. Johannes

A. G. Rhodin. Saunders, Philadelphia,1963. 236 pp. Illus. $10.The Bacteria. A treatise on structure

and function. vol. 4, The Physiology ofGrowth. I. C. Gunsalus and Roger Y.Stanier, Eds. Academic Press, New York,1962. 473 pp. Illus. $16.

Biophysics of the Striated Muscle. E.Ernst. Akademiai Kiado, Budapest (Ger-man edition, 1958), 1963. 398 pp. Illus.

Birth Defects. Morris Fishbein, Ed. Lip-pincott, Philadelphia, 1963. 351 pp. Illus.$5.

Catalogue of the Type Specimens ofMicrolepidoptera in the British Museum,Described by Edward Meyrick. vol. 4,Phaloniidae, Carposinidae, Chlidanotidae,Oecophoridae, Blastobasidae, Momphidae,Epermeniidae, Strepsimanidae, Physoptili-dae. J. F. Gates Clarke. British Museum(Natural History), London, 1963. 525 pp.Illus. £12 10s.

Changing Perspectives on the GeneticEffects of Radiation. James V. Neel.Thomas, Springfield, Ill., 1963. 105 pp.Illus. $5.

Comprehensive Biochemistry. vol. 5,Carbohydrates. Marcel Florkin.and ElmerH. Stotz, Eds. Elsevier, New York, 1963.344 pp. Illus. $14.50.

Control Mechanisms in Respiration andFermentation. A symposium (WoodsHole, Mass.), September 1961. BarbaraWright, Ed. Ronald, New York, 1963.363 pp. Illus. $10.

Disorders of Carbohydrate Metabolism.Proceedings of a conference (London),March 1962. D. A. Pyke, Ed. Lippincott,Philadelphia, 1962. 256 pp. Illus. Paper.

Drawings of British Plants. Being illus-trations of the species of flowering plantsgrowing naturally in the British Isles. Pt.18, Compositae. Stella Ross-Craig. Bell,London, 1963. Unpaged. Plates. Paper,lOs. 6d.Experimental Chemotherapy. vol. 1. R.

J. Schnitzer and Frank Hawking, Eds.Academic Press, New York, 1963. 1024pp. Illus. Until 31 May, $32, $38.

Experiments in Microbial Physiologyand Biochemistry. Gerald R. Seaman.Burgess, Minneapolis, 1963. 106 pp. Illus.$5.

Forest Mensuration and Statistics. Ber-tram Husch. Ronald, New York, 1963.482 pp. Illus. $10.

General Biology. A unified text manual.William W. Bloom and Carl H. Krekeler.

Van Nostrand, Princeton, N.J. (© 1955),1963. 501 pp. Illus. Paper, $7.50.

Genetics and Dental Health. Proceed-ings of an international symposium (Be-thesda, Md.), April 1961. Carl J. Witkop,Jr., Ed. McGraw-Hill, New York, 1962.310 pp. Illus. $8.50.The Harvey Lectures, 1961-62. Jacques

Monod et al. Academic Press, New York,1962. 220 pp. Illus. $9.50.

History of the Primates. An introduc-tion to the study of fossil man. WilfridLeGros Clark. British Museum (NaturalHistory), London, ed. 8, 1962. 125 pp.Illus. Paper, 5s.

Index Nominum Lichenum. Inter an-nos 1932 et 1960 divulgatorum. I. Mac-Kenzie Lamb. Ronald, New York, 1963.823 pp. $16.Mast Cells and Basophils. Annals of

the New York Academy of Sciences, vol.103, art. 1. Harold E. Whipple, Ed. T-heAcademy, New York, 1963. 492 pp. Illus.

Medical Genetics. Widukind Lenz.Translated from the German (Medizin-ische Genetik: Eine Einfiuhrung in ihreGrundlagen und Probleme, 1961) byElisabeth F. Lanzl. Univ. of ChicagoPress, Chicago, 1963. 232 pp. Illus.$6.50.Methods in Carbohydrate Chemistry.

vol. 3, Cellulose. Roy L. Whistler, Ed.Academic Press, New York, 1963. 423pp. Illus. $15.50.Methods of Separation of Subcellular

Structural Components. Biochemical So-ciety symposium (University of Lou-vain), May 1962. J. K. Grant, Ed. Cam-bridge Univ. Press, New York, 1963. 162pp. Illus. $6.50.The Mountain Gorilla. Ecology and

behavior. George B. Schaller. Univ. ofChicago Press, Chicago, 1963. 449 pp.Illus. $ 10.Mucous Secretions. Annals of the New

York Academy of Sciences, vol. 106, art.2. Harold E. Whipple, Ed. The Academy,New Yorlk 1963. 653 pp. Illus.

Nerve Cells and Insect Behavior. Ken-neth D. Roeder. Harvard Univ. Press,Cambridge, Mass., 1963. 200 pp. Illus.$4.75.

Outlines of Biochemistry. Eric, E.Conn and P. K. Stumpf. Wiley, NewYork, 1963. 399 pp. Illus. $8.75.

Procedures fop Routine LaboratoryDiagnosis of Virus and Rickettsial Dis-eases. S. S. Kalter. Burgess, Minneapolis,1963. 108 pp. Illus. $5.An Rh-Hr Syllabus. The types and their

applications. Alexander S. Wiener andIrving B. Wexler. Grune and Stratton,New York, ed. 2, 1963. 124 pp. Illus.$4.50.The Science of Biology. Paul B. Weisz.

McGraw-Hill, New York, 1963. 798 pp.Illus. $8.50.The Structure and Function of the

Membranes and Surfaces of Cells. Bio-chemical Society symposium (London),March 1962. D. J. Bell and J. K. Grant,Eds. Cambridge Univ. Press, New York,1963. 178 pp. Illus. $6.50.Viewpoints in Biology. vol. 1. J. D.

Carthy and C. L. Duddington, Eds. But-terworth, Washington, D.C., 1962. 300pp. Illus. $14.95.The Waking Brain. H. W. Magoun.

Thomas, Springfield, Ill., ed. 2, 1963. 196pp. Illus. $7.75.

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can Anthropological Association andthe American Dietetic Association isconsidering a joint program on "Cul-tural Influence on the Diet" of interestto anthropologists and psychologists,probably the morning of 28 Decem-ber.

Psychology (I)

The primary program of Section I(Frank W. Finger, University of Vir-ginia) will consist of four symposiaand the vice-presidential address. Led-yard R. Tucker (University of Illinois)has arranged a symposium for 29 De-cember on "Investigation of Experi-mental Psychological Problems byMultivariate Techniques." Participantswill include R. Darrell Bock (Univer-sity of North Carolina), "Behavioralapplications of multivariate analysis ofvariance"; Maurice Lev (NorthwesternUniversity and University of Chicago)and H. J. A. Rimoldi (Loyola Univer-sity, Chicago), "Application of multi-variate analysis to the study of path-ology of the heart"; J. E. Keith Smith(Massachusetts Institute of Technology),"Multidimensional analysis of similar-ity."On the same day will be held a

session on "Learning Research Relatedto Educational Improvement," arrangedby Lee J. Cronbach (University of Illi-nois); the vice-presidential addressby Lloyd Humphreys (University ofIllinois) which is entitled "Problemsposed to experimental psychology bythe evidence for trait instability."

Topics for the symposia on 30 De-cember are "The Development of VisualPerception in Children" arranged byHerschel Leibowitz (Pennsylvania StateUniversity) and "Engineering Psychol-ogy: Contributions of an Infant Sci-enco" arranged by Lowell Schipper(Pennsylvania State University).

Social and Economic Sciences (K)

Section K (Ithiel de Sola Pool,Massachusetts Institute of Technology)has the responsibility this year ofarranging the interdisciplinary sympo-sium, "Biological and Sociological Re-search on the Effects of Human Repro-duction Control," for the morning of28 December. The vice-presidential ad-dress of Kingsley Davis (University ofCalifornia, Berkeley) is expected to beone of the papers of this program. The

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SCIENCE, VOL. 140914

section may also arrange one or twospecialized sessions.The American Economic Association

(Bert F. Hoselitz, University of Chi-cago) will have a program of invitedpapers, cosponsored by Section K, on"The Economics of Medicine." Thisis scheduled early in the meeting (26Dec.) so that AEA members may at-tend both the AAAS meeting and theirown national meeting, to be held inBoston, Mass., from 27 to 29 December.The American Political Science As-

sociation (Evron M. Kirkpatrick,APSA), it is anticipated, will have itscustomary special program (27 Dec.)cosponsored by Section K.The national meeting of the Ameri-

can Society of Criminology (Donal E.J. MacNamara, New York Institute ofCriminology), which has as its generaltheme "Quo Vadis in Criminology?",will open on 29 December with a ses-sion on "Experimental programs incrime control and crime prevention"and one on "Analysis and evaluation ofdelinquency prediction devices." Othersessions (30 Dec.) will be on "Improv-ing the administration of criminaljustice" and a "Seminar: universitycurricula in criminology and correc-tions." The annual awards and memo-rial session of the Society will be heldon the evening of 29 December; thepresentation will be preceded by theannual business meeting.The American Sociological Associa-

tion (Janice H. Hopper, AmericanSociological Association, New York)will have two symposia (29 Dec.), co-sponsored by Section K.

Details of the programs of the MetricAssociation (Robert P. Fischelis, Wash-ington, D.C.) are not yet available.

History and Philosophy of Science (L)

Details of the program of Section L(Norwood Russell Hanson, IndianaUniversity; Adolf Griinbaum, Univer-sity of Pittsburgh) are incomplete, butthere will be five or six sessions in thetwo areas of interest of its members. Inaddition to "Philosophical Aspects ofPresent-day Cosmogony and Cosmol-ogy," discussed under General Sessions,there will be symposia and papers asfollows: "The Relation of Physics tothe New Biology"; W. M. Elsasser(Princeton University), "The naturalphilosophy of automation," "TheAnalytic-Synthetic Distinction in itsBearing on the Philosophy of Mathe-

24 MAY 1963

WHEN GREATER INTENSITY IS NEEDED..The new Biosonik Probe with these attachments isyour best buy. It's the apparatus you need forspecial applications where localized cavitation isrequired for cell disruption of microorganisms;emulsification and preparation of solutions ofdifficult-to-dissolve substances. Power output:120 watt to 240 watt peak capacity. Price: $798.CONTINUOUS FLOW/HIGH INTENSITYCHAMBERThis multi-purpose attachment permits evengreater use of the new Biosonik Probe, in appli-cations where intense, localized ultrasonic vibra-tions are required in batch or continuous flow ofproduct. 2 ml microchamber disrupts yeast.* Jacketed for cooling-Coolant flows contin.

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The AAAS PresentsThree New Symposium Volumes . . .

SCIENCES in Communist ChinaEditor: Sidney H. Gould. 884 pages. 23 illustrations.Author, subject and geographical index. Cloth.June, 1961.

Price: $14.00*$12.00 prepaid, for AAAS members.

OCEANOGRAPHYEditor: Mary Sears. 665 pages. May, 1961.146 illustrations. Index. Cloth.

Price: $14.75*$12.50 prepaid, for AAAS members.

* If you are not a member of the AAAS,you may join now, and order any ofthese volumes at the special member price.Enclose $8.50 dues for your first year ofmembership, along with payment for thevolumes you want.

BERM PLASM RESOURCESEditor: Ralph E. Hodgson. 394 pages. 59illustrations. Index. Cloth. April, 1961.

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matics"; 1. G. Kemeny (DartmouthCollege), "Philosophy and ScientificRevolutions"; P. K. Feyerabend (Uni-versity of California, Berkeley), "Aphilosophy of revolutionary scientificdevelopment," "The Logic of StatisticalExplanation"; Wesley C. Salmon (In-diana University), "The status of priorprobabilities in statistical explanation,""Philosophical Issues in Economics";F. Machlup (Princeton University), titleto be announced, and G. Tintner (Uni-versity of Pittsburgh), "Methodologicalquestions of econometrics." The sec-tional vice-presidential address will begiven by Adolf Griinbaum.

The ninth annual meeting of theSociety for General Systems Research(Milton D. Rubin, Mitre Corporation)will have a session for contributedpapers and a session for invited paperson "General Systems and the Two Cul-tures." (27 Dec.).The plans of the Philosophy of Sci-

ence Association (Lewis K. Zerby,Michigan State University) are not yetavailable.

Engineering (M)

The program of Section M (L. K.Wheelock, Engineers Joint Council) isstill in a planning stage.

Medical Sciences (N)

The annual program of Alpha Ep-silon Delta (Maurice L. Moore, na-tional secretary) on career opportunitiesin medicine and dentistry will consistof a luncheon and address and a tourof local medical facilities.As in previous years, Section N will

have a four-session symposium (29-30Dec.) with participants from all partsof the country. This year's subject ischemical suppression of cellular syn-thesis and mitosis and is being organ-ized by Francis D. Moore (HarvardUniversity) and Oscar Touster (Van-derbilt University). George Hitchings(Burroughs Wellcome Research Labora-tory, Tuckahoe, N.Y.), Arnold D.Welch (Yale University), and RupertE. Billingham (Wistar Institute of Anat-omy) are collaborating in the programplanning. The papers will deal with theregulation of DNA action, inhibition ofnucleic acid production, cancer chemo-therapy, and immuno-suppression in

transplantation. Francis D. Moore willgive the vice-presidential address. Sec-

SCIENCE, VOL. 140

tion N will also cosponsor the AAASinterdisciplinary symposium on devel-opmental aspects of immunity as wellas other appropriate programs.The A merican Physiological Society

and the Bioscience Programs of theOffice of Space Sciences of the NationalAeronautics and Space Administrationwill jointly sponsor a symposium onspace biology and medicine. Coordi-nators are Robert E. Smith (UCLAMedical Center), and Orr E. Reynolds(director of Bioscience Programs,NASA.

Details of the- annual symposium atthe AAAS meeting sponsored by theAmerican Psychiatric Association Coin-mittee on Research (Milton Green-blatt, Massachusetts Mental HealthCenter and Harvard Medical School)are not yet available.

Dentistry (Nd)

Section Nd (Seymour J. Kreshover,National Institute of Dental Research)will have a three-session symposium"Growth and Development of the Face,Teeth, and Jaws," arranged by StanleyM. Garn (Fels Research Institute), 26-27 December. The symposium will becosponsored by the AAAS section onAnthropology (H), the American DentalAssociation; the International Associa-tion for Dental Research, North Amer-ican Division; and the American Col-lege of Dentists.

The program will cover the deter-minants of dental and facial growth,including the genetic determinants, en-docrine determinants, nutrition deter-minants, and abnormal determinants ofgrowth and size. An attempt will bemade, then, to consider normal varia-tion in the development of the teethand the supporting structures and theface as a whole. The speakers willrepresent a broad range of backgroundsbeing drawn from experimental pathol-ogy, radiology, genetics, enzymology,nutrition, and primate research, andin this way it is expected that thegrowth of the teeth and jaws will beput in broad perspective. Speakers andtheir papers are: Opening remarks andwelcome by Paul E. Boyle (WesternReserve University; vice president ofSection Nd) with B. Holly Broadbent(Western Reserve University) presiding;Introduction to the symposium, Stan-ley M. Garn (Fels Research Institute);"Evolutionary background of dental andfacial growth," Albert A. Dahlberg(Zoller Memorial Dental Clinic, Uni-24 MAY 1963

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versity of Chicago); "Normal varia-tions in dental facial growth," CoenraadF. A. Moorrees (Forsyth Dental Infirm-ary for Children, Boston, Mass.);"Genetic parameters of dental facialgrowth," Richard Osborne (Sloan-Ket-tering Institute for Cancer Research).Carl J. Witkop (National Institute ofDental Research) will preside at thesecond session scheduled for the after-nioon of 26 December. Speakers andtheir papers are: "Prenatal factors andtheir evaluation," Uwe Stave (Fels Re-search Institute); "Dental and facialgrowth in chromosomal abnormalities,"M. Michael Cohen (School of DentalMedicine, Tufts University); "Growthof the face in developmental defects,"Frederic N. Silverman (Children's Hos-pital Research Foundation, Cincinnati);'Genetics of tooth formation," Stan-ley M. Garn and Arthur Lewis (FelsResearch Institute). A third sessionwith Seymour J. Kreshover presiding isscheduled for the morning of 27 De-cember. Speakers and papers are: "En-docrine factors in tooth formation,"Stanley M. Garn, and Arthur Lewis(Fels Research Institute) and RobertBlizzard (School of Medicine, JohnsHopkins University); "Nutritional mod-ification of dental development," Lawr-ence R. Fess (School of Public Health,Tulane University); "Genetic carrierof dento-facial disease," Robert J. Gor-lin (School of Dentistry, University ofMinnesota); "Primate odontogenesis,"Daris R. Schwindler (Medical Collegeof South Carolina); Summary and con-cluding remarks, Stanley M. Garn. Afourth session on another general edu-cational subject will complete the Sec-tion's program.

Pharmaceutical Sciences (Np)

The prograni of Section Np (JosephP. Buckley, University of Pittsburgh)is expected to include sessions for con-tributed papers in hospital pharmacy,other sessions for contributed papcrs,and a symposium. There will be a sec-tion luncheon with the vice-presidentialaddress by Don E. Francke (AmericanSociety of Hospital Pharmacists) and adinner.

Section Np's entire program will becosponsored by the Amnerican Associa-tion of Colleges of Phiarmiiacy, the Amer-ican College of A pothecaries, the Amer-ican Society of Hospital Pharmacists,the A mzerican Pharmaceutical Associa-tion, Scientific Section, and the NationalAssociation of Boards of Plharmaicicy.

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SCIENCE, VOL. 140

Agriculture (0)

Section 0 (A. H. Moseman, Rocke-feller Foundation) will have a four-session symposium on "AgriculturalSciences for Newly Developing Na-tions." The sequence of topics is: (i)Characteristics of agricultural systemsin emerging nations; (ii) Research todevise and adapt innovations; (iii) Edu-cation and development of human re-

sources; and (iv) Establishing indigenousinstitutions to serve advancing agricul-ture. It is hoped that the review ofagricultural science in advancing nationswill be of broad interest to scientistsand educators at the universities, gov-

ernment agencies, and private organiza-tions that have participated in such pro-

grams during the past decade or more.

Industrial Science (P)

Section P (Allen T. Bonnell, DrexelInstitute) will have its annual sympo-

sium of particular interest to executivesin industry. Past vice president HenryF. Dever (Minneapolis-Honeywell Regu-lator Company) will give the vice-presidential address at the annual lunch-eon. The Section will also confer the1963 Industrial Award and cosponsor

appropriate programs. The program ofThe Institute of Management Sciences(Burton V. Dean, Case Institute ofTechnology) is yet to be arranged.

Education (Q)

The program of Section Q (HerbertA. Smith, Pennsylvania State Univer-sity) includes two joint sessions with theCouncil for Exceptional Children (26-27 Dec.); two joint sessions with theAmerican Educational Research Asso-ciation (30 Dec.); three or more ses-

sions for contributed papers (29-30Dec.); a business meeting (28 Dec.);and the vice-presidential address ofHarold E. Wise (University of Ne-braska) (29 Dec.).The four science teaching societies-

ANSS, NABT, NARST, and NSTA-that regularly meet with the AAAS may

be joined by a fifth, the Central Asso-ciation of Science and MathematicsTeachers (CASMT). (The coordinatoris Paul Loos, Bedford, Ohio.) Therewill be a joint session arranged by TedAndrews (State Teachers College, Em-poria, Kansas) (27 Dec.), three jointfilm sessions (27-29 Dec.) and a seriesof concurrent sessions similar to the24 MAY 1963

Study the Internal Structure of Solidswith the

Nametre Model IV Acoustic SpectrometerPATENT APPLIED FOR

With this new instrument the absorption ofacoustic energy in solid materials as a function of

frequency and temperature can be measured auto-matically. Small, 5-cm. long specimens of metal,mineral, ceramic, concrete, plastic, bone, or woodare suitable for measurement. However other sizesand various shapes may also be measured as easily.In addition the acoustic absorptions of plastic coat-

ings, paints and films are readily determined. Obvi-ous applications include the life sciences as wellas the physical.

For a quarter of a century scientists have beencarefully identifying acoustic absorption spectra ofmany different solids in terms of micro and atomicstructural changes. Much of this work has beenpublished. Consequently a rich literature is avail-able for reference when one plans to investigatenew materials or to control the properties of old materials.

Practically all of these valuable data were laboriously recorded point by point. Now,fortunately, similar investigations can be carried out more efficiently and expeditiously bymerely inserting the sample specimen into the Nametre Acoustic Spectrometer, which willthen, unattended, automatically record on a chart the absorption of vibrational energy asa function of frequency and temperature.

POSSIBLE APPLICATIONS OF THE ACOUSTIC SPECTROMETER are based on publi-cations, and include (a) research to develop new solid materials, (b) improvement and under-standing of old materials, (c) quality control.

1. COMPOSITION-The composition of many solids has been correlated with the acousticabsorption spectrum (or internal friction). Some examples are the concentration of metalsin alloys, gases in metals, oxides in glasses, polymers in plastics, and moisture in hardenedportland cement paste.

2. REACTION RATES-Solid-state reactions invariably cause a characteristic absorption.From measurements at two or more frequencies, the heats of reaction can be determined.Typical reactions which have been studied by this technique include solids with gases, phasechanges, recrystallization, and order-disorder transformations. The technique is especiallyvaluable in following nucleation and precipitation phenomena in solids. In glasses, crystal-lites can be detected and measured quantitatively long before other methods becomeresponsive.

3. DIFFUSION-The rates of diffusion of carbon, oxygen, and nitrogen atoms in iron,tantalum, and other metals can be measured quantitatively in terms of internalfriction over extensive temperature ranges. Activation energies can be determined. Thediffusion of alkali ions in glasses likewise can be determined.

4. GRAIN SIZES-Grain sizes, degree of polycrystallinity, and intercrystalline viscous effectscan be investigated for a number of solids.

5. THERMAL HISTORY-When the state of a solid is best described as a "frozen-in" highertemperature state, the acoustic absorption is characteristically increased. For example, inthe case of glasses the degree of annealing can be precisely determined.

6. ELASTIC MODULI-For specimens in transverse vibration, Young's Modulus as a functionof temperature can be precisely determined. Shear and bulk modull also can be determined.

7. VISCOUS FLOW-Extremely high viscosities, at temperatures well below the melting andsoftening points, are easily measured.

8. ENGINEERING PROPERTIES-Resonance amplification as a function of temperaturethroughout the ranges of interest in building technology, -in aircraft, and in missile struc-tures can be recorded directly by the Acoustic Spectrometer. High internal acoustic absorp-tion is necessary to prevent damage to structures by "sympathetic vibrations." Other engi-neering applications require that solid materials have minimal internal friction-a condi-tion easily ascertained by the measurement of samples in the Acoustic Spectrometer.

9. OTHER-Many other solid-state phenomena can be investigated with this new instrument.Some examples are fatigue, cold work (dislocations), and ferromagnetic effects. The rever-sible effects of moisture on hardened portland cement paste can be separated from the non-reversible effects. The influence of moisture on the elastic properties of wood and ceramicscan be measured. Atmospheric corrosion may be followed. Rate of hardening, effectof radiation and gases on coatings and plastics can be automatically recorded.

8

n

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MEASUREMENTS CAN BE TAKEN

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on an XY recorder, with Y corresponding to reso-nance amplitude and X corresponding to temperatureand at appropriate intervals to frequency. Whentemperature is linearly programmed the data maybe recorded by a linear recorder.

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Statistics (U)

The program of Section U, HoraceW. Norton (University of Illinois),chairman, will again consist largelyof sessions prepared or cosponsoredwith other sections. The vice-presiden-tial address will be given by HaroldHotelling (University of North Caro-lina); the proposed title is "Light onstatistical teaching problems for recentmathematical research."

Sessions are being developed on sta-tistical problems in geology, stochasticmodels in biology, multivariate meth-ods in experimental psychology, and onproblems of search and retrieval sys-tems. Additional sessions are alsoplanned for the presentation of resultsof recent significant statistical surveys.One on "Health statistics" will drawheavily on the findings of the NationalHealth Survey. The other session willbe built around a current study on howgraduate students finance their educa-tion.

In addition, there will be a sessionfor teachers of statistics and anothersession on new developments in apply-ing statistics to novel domains of sci-ence. Morris B. Ullman, 7604 CayugaAvenue, Bethesda, Md., is secretary forSection U.The American Statistical Association

will have a number of sessions spon-sored jointly with Section U and per-haps others cosponsored by the Bio-metric Society and by Section K.The Biometric Society, Eastern North

American Region (T. A. Bancroft, IowaState University of Science and Tech-nology) is planning sessions but detailsare not yet available.

Science in General (X)

A number of organizations, too gen-eral in their interests to be placed inany sectional series or under anyspecific discipline, will constitute the"X" series in the printed General Pro-gram. In this preliminary synopsis, theprograms of one of these-the Acad-emy Conference-has already beenmentioned, under "Other GeneralEvents."The American Geophysical Union

(Waldo Smith, AGU, Washington, D.C.)will cosponsor appropriate sessions.The national convention of the Sci-

entific Research Society of America(Donald B. Prentice, Yale University)is scheduled for 30 December. The

922

award of the William Procter prizeand the annual RESA address will fol-low the luncheon, to be held jointlywith the Society of the Sigma Xi.The annual meeting of Sigma Delta

Epsilon, graduate women's scientific fra-ternity (Ernestine Thurman, NationalInstitutes of Health) will include aluncheon for all women in science withAgnes Hansen (University of Minne-sota) as speaker, and the grand chap-ter dinner and meeting. A headquartersroom will be maintained throughoutthe meeting period (26-29 Dec.).The 64th annual convention of the

Society of the Sigma Xi (Thomas T.Holme, Society of the Sigma Xi, NewHaven) will be held on 30 Decemberafter the joint luncheon with RESA.In the evening of 29 December, theSociety will join with the United Chap-ters of Phi Beta Kappa, (Carl Billman,Phi Beta Kappa, Washington, D.C.) insponsoring an address by Paul B. Sears(Yale University). Since the inaugura-tion of the series in 1922, these dis-tinguished lectures of interest to allparticipants have been a valued featureof the Association meeting.

Call for Papers by Sections

Five sections of the Association willarrange sessions for contributed papersat the Cleveland meeting. The secre-taries or program chairmen to whomtitles and abstracts of papers should besent, not later than 30 September, areas follows:E-GEOLOGY AND GEOGRAPHY. Richard

H. Mahard, Department of Geologyand Geography, Denison University,Granville, Ohio

G-BOTANICAL SCIENCES. Harriet B.Creighton, Department of Botanyand Bacteriology, Wellesley College,Wellesley 81, Mass.

H-ANTHROPOLOGY. Eleanor Leacock,Bank Street College of Education,69 Bank Street, New York 14, N.Y.

NP-PHARMACEUTICAL SCIENCES. JosephP. Buckley, School of Pharmacy,University of Pittsburgh, Pittsburgh,Pa.

Q-EDUCATION. Herbert A. Smith, Room168 Chambers Building, Pennsyl-vania State University, UniversityPark, Pa.Although the general deadline is 30

September, most sections, and subse-quently the AAAS office, would behappy to receive titles in advance ofthat date.

SCIENCE, VOL. 140