a review of recent animal e Ccare developments from I19191, J

General purpose fiberglasscage #12 with Lid 12B is11 x 8i2ux 6" deep

Mouse cage #22 with Lid 22A,of fiberglass, has four lidstyles, is 11-" x 7E2-' x 5"

Holding and breeding cage #32,of fiberglass, is shown with Lid32B. Cage is 19" x 10'2 " x 58 "

Restraining cage #90, for immobil-izing and holding rats up to 300grams, has many applications

Newly developed all metal lidswith single piece deep drawnfeeders come in several sizes

Polypropylene cage #25 and clearcage #23, bothI 1yZ2" x 712" x 5", arenew additions to the Econo-Cage line

Lightweight Econo-Cages are made with corners and edgesrounded and seamless for easy cleaning. They are resistant toacids and staining. The low thermal conductivity of these unitsreduces animal and weight loss from chilling and upper respira-tory diseases. Fiberglass Econo-Cages can be autoclaved repeat-edly. You can select from a variety of lid styles and componentsto suit your exact needs.

For the most up-to-date animal care product developments keepin touch with ...

Econo-Cage Division, Box #4 e c o n oMARYLAND PLASTICS, INC. -Ic aige

Federalsburg, Maryland i I

1 328

Nev ProdutctsThle informiation reported here is oitiiiiie(d from

mnilf(acturers (11(1 from ot7lier souilrcev cot iideredhto lie hlialh e. .N (1ithr Scietice tior thle writer a.s-

| imes re.pon',v i ilit fotf(le uiccuracY of the ini-foi,1ii,,tioii. All iiquiiric'i (coi(crnlili itemii lited/ihou/l b e adIlrei'sed to the maillufiicturer. 11-

(lud( (tIh depatirnmieit miomiier 0111 iiquirYi

* PROXIMITY TRANSDUCER meaISu-ressmall mechanical displacements at fre-quencies from 0 to 20,000 cy/sec. Cali-bration can he performled undler dx -

namic conditions, a minicromiieter headon the transdiucer is calibralted directlyin 0.0001-in. units. OuLtput is designedlfor cathode-ray-tUbe display. (PhotoconReseairch ProdLucts, Dept. Sci480, 421N. Altadena Dr., Plasadena, Calif.)

* AUDIOMETER provides signals at fre-quencies 500, 1000( 2000. and 400(0cx 'sec at three intensity levels. 15. 30.and 40 db. Frequency aIccuracy is saidIto be - 10 percent land amiplitudle .ac-curacv 2' db. Selection ot each signalis provided by 2 push buttons. Facili-ties for as many as si\ telephones or adloLuble headphone wxith chan-coverswx itch and bone condLction can beproxidel. (Technisch Handelsbure.Dept. Sci482, c, o Netherlands TradeComimlission. 55 Fifth Ave., Ne\,York 17, N.Y.)

* COOIRDINATE INSPECTION N/I\A HINIpermlits inspectioni otf machined w orkto an accuracv of )0.001 in. withtravel 24 by 15 in. Vertical travel of0 in. is not usedl for measurement.

NMotion in the x and y directioins ismeaesLired photoelectrically by the Moirefringe pattern generated by crossedgrattings. Measuremiient informiiation is

displayed continuously by two 5-digitcouLnters. (Ferranti Electric Inc., Dept.Sci492, 95 Madison Ave., Hempstead.N.Y.)

* [)ATAS PRINTER iS a m1iniUturized dc-vice w eighing a feCNx ounIces. As manyas 9f) dioits are printed simIltaneousivon electrosensitive paper when appro-prialte elemients of an array of stainless-steel printing segments are energized.Operating powter is said to bee loxenouLgh to eliminate the need for isola-tion and driver stages to couiple thedata-prodLcing device to the printer.(New York University, Dept. Sci493.University Heights Center, New York53. N.Y.)

* CON[)UCTIVITY METER is a portablebattery-oper.ated meter dlesigned to readparts per maillion of solite in saline orother solutions. Meter ranges are froml0 to 1 00,000 parts per mlillion with in-cremilents down to 0.5. A temperatLirecompensation adjustment is provided.Weight is 1.5 lb. (Carmia Mfg. Co..Dept. SciS05, 1879 Mullin Ave., Tor-rance, Calif.)

SCIENCE. VOL. 131

on April 1, 2020

http://science.sciencem

ag.org/D

ownloaded from

* SIGNAL GENrt%t .iAR furnishes crystal-controlled calibration frequencies at in-tervals of 100 kcy/sec from 300 to 1000Mcy/sec. Intermediate frequencies arecontinuously tunable with error of+ 300 cy/sec. Auxiliary equipmentpermits the crystal-synchronization in-terval to be reduced to 100 cy/ sec andthe continuous tuning error to 0.1cy/sec. (Electronics Applications, Inc.,Dept. Sci497, 174 Richmond Hill Ave.,Stamford, Conn.)

* ELECTROMETER features miniaturizeddesign that permits two electrometersto be mounted in 31/2 in. of a standardrelay rack. Highest sensitivity range isI -12 amp, full scale. Specifications in-CILIde: accuracy, - 2 percent of fullscale from 10` to 15` and ± 3 percentin other ranges; drift, less than 2 per-cent per week, and noise, less than 2percent except on the most sensitiverange: input drop, less than 6 mv; full-scale output for recorder, 10 mv. (GyraElectronics Corp., Dept. Sci495, P.O.Box 184, LaGrange, Ill.)

* INTERFERENCE FILTER iS said to re-move ultraviolet radiation completelyand reflect infrared radiation. The filtertransmits about 90 percent in the visiblefrom 425 mn11 to 700 mn.e and has asharp cutoff beginning at 700 mjt. Thehalf-transnmission points are at 412 mnton the short side and 725 mnu on thelong side. (Fish-Schurman Corp., Dept.Sci504, 70 Portman Rd, New Rochelle,N.Y.)

* PRESSURE GAGE is designed for usewhere smnall differential pressures atrelatively high line pressures are to bemzeasured. Sensitivity is 0.1 percent andaccuracy is + 0.5 percent of full-scalerange. Two models available have full-scale ranges, respectively, of 2 lb/in.2differential at line pressure up to 50lb/in.2, and 5, 10, or 20 lb/in.2 differ-ential at line pressures up to 300 lb/in.2Dials can be supplied calibrated in anydesired units. (Wallace and Tiernan,Inc., Dept. Sci509, 25 Main St., Belle-ville, N.J.)

* TIME ANALYZER analyzes the distri-bution of nuclear events with respectto time. Information is stored digitallyin 32 consecutive gated channels ofvariable width from 1 1msec to 0.08 sec.Channel scalers have a double-pulseresolution of 1 ,usec and count up to2500/pulses per second. Each channelhas two electronic counting units anda 4-digit mechanical register to provide10' number storage. The total numberof pulses entering the analyzer is alsoindicated. (Eldorado Electronics, Dept.SciSOO, 2821 Tenth St., Berkeley, Calif.)

JOSHUA STERNNational Bureau of Standards,Washington, D.C.29 APRIL 1960

r-PERSONNEL PLACEMENTCLASSIFIED: Positions Wanted, 25¢ per

word, minimum charge S4. Use of BoxNumber counts as 10 additional words.Payment in advance is required. Posi-tions Open, $40 per inch or fractionthereof. No charge for box number.

COPY for classified ads must reachSCIENCE 2 weeks before dote of issue(Friday of every week).

DISPLAY: Rates listed below-no chargefor Box Number. Monthly invoices willbe sent on a charge account basis-provided that satisfactory credit is estab-lished.

Single insertion $40.00 per inch4 times in 1 year 38.00 per inch7 times in 1 year 36.00 per inch13 times in 1 year 34.00 per inch26 times in 1 year 34.00 per inch52 times in 1 year 32.00 per inch

For PROOFS on display ads, copy mustreach SCIENCE 4 weeks before date ofissue (Friday of every week).

Replies to blind ads should be addressedas follows:

Box (give number)Science1515 Massachusetts Ave., NWWashington 5, D.C.

|||||||||||||POSITIONS WANTED ||||||||||||

Geneticist-Cytologist-Electron Nlicroscopist. Ph.D.Specialized research, teaching experience. Micro-biology, botany background. Publications. Box83, SCIENCE. 4 22, 29

Immunopharmacologist, Ph.D., desires to conductresearch on purification and therapetLitic uses ofantibodies and enzynes. P.O. 333, Davis, Cali-forriia. 4/15, 22, 29

(a) Pharmacology/Physiology Ph.D.; facilty ofleading medical schools; extelosive ptiblicationsoni CNS, cardiovalscatt.r, respiration, shock, ten-sion research; availa:ble for acaidemic or researchappointment. (b) Zoology Ph.D., human anatomyminor; 10 years of anatomy teaching at medicalschool, neuroanatonoy research experience; pre-fers academic teacloiiog and research opportunity.Medical Btireau. hllc.. Scietice Division, BuLrneiceI arson, President, 900 North Michigan Avenue.Chicago. X

Physiology-Endocrinology, Ph.D. Background-train-ing in endocrine, cellilar, mammalian, zoologicalphysiology; biochenoistry. Academic or research.Box 98, SCIENCE. X

||||||||||||||||||| POSITIONSOPEN

||||||||||||||||POSITIONS OPEN |||||||||||||Faculty of Agriculture. The University of Albertainvites applications for a position in the De-partment of Animal Science as Assistant Pro-fessor, starting salary $6000-$7000 depending onexperience and qualifications, excellent prospectsfor advancement. Candidates should have aPh.D. or equivalent in animal physiology with aminor in biochemistry and be quLalified to con-duct research involving the clse of isotopes.Duties, to commence 1 September 1960, includefundamental and applied research with farm andlaboratory animals, teaching and limited exten-sion work.

Applications, accompanied by a recent photo-graph, and giving age, nationality, and otherpersonial information, transci-ipts of academicrecord, list of publications aind experience, andnames and addresses of three referenices, shotLildbe addressed to the Head, Department of AnimalScience, University of Alberta, Edmontoni, Al-berta. Closii:g date: 30 June 1960. 5/6

Botanist. Experienced in microtechniquLe andgeneral botanical preparation. For work withwell-known biological supply house. Preparationof slides and other demonstrations for botaniyand general biology. Male or fem,ile, preferPh.D.; M.S. and experience acceptable. Goodsalary, benefits, paid vacation, and sick leave.Opporttinity for advancement. Reply to Box 95,SCIENCE. 5/6

(a) Microbiologist; Ph.D. or equivalenit trainingto serve ats head, cell production facility. con-duct cell culture research: mutst be familiarsingle, suLspended. mnonolaver cell cciltLire te-cl-niqcLes. related prcocedLtres; midst esternt officepromlnetot pharmi cetLtical compatny. (b) Pharma-cologist; Ph.D. to estiblish evaltLiationi progrimassociated toxicitv stcidies in new druLg screeninig;report to director. phairmacologic reseairch; to$8500; miiidwsestern scUbsidiars. prominenit com-pany; Chiciago suLbuLrb. (c) Biochemist; Ph.D. totraini in-plant visitors in cotllgL.ationi. relatedproblems; keep .abreast of competitive produLcts.developmcnts; give seminars in coagtltation, re-lkited areas abotLit $10tt.titi(l; East (d) Bacteriol-ogist; B.S.. AM.S.. fos constilting tirm doitng drLigevalulatio:is, v itarin:, hormionen. toxicoloigical is-satys; sciperior f.acilities: to $60)()0; Midwsest. (e)Biochemist; M.S., Ph.D., to head department.30)0-bed Chicago hospital; minimuLm $8X()()).(Please write for aI .inalysis form. OLir 64thyear: Fotci:ders of the counsellins service to themedical profession. Serving medicine with dis-tinction over half a centurv. Science Division.Woodward Medical Bt:reau, Ann Woodw;vrd, Di-rector, 185 North Wabash, Chicago. X

Microbiology Graduate Assistantships toss ardmaster's degree; $18110, free tc:ition. Excellentficilities. Phone itnqtiiry collect. Orton Stark.Miami Unliversity, Oxford, Ohio. 4 22, 29

~~~~~~~~~~~~~~....

INTERNATIONAL SEARCHHOpportunities for Physicists- Physical Chemists- Fiber Scientists

FIBER CHARACTERIZATION RESEARCHThe planined extpansion of the progs atns and staff of the Che:::strand Researc: Ce:iter. ltlc. iltvo:otestablisl:nient of a Fiber CIharacterization Section to

* Characterize experimental fiber forming materials, relating their properties back to theirmolecular structure and forward to end product performance

* Develop fiber evaluation techniques and instruments* Perform physical analysis associated with fiber, yarn and end product evaluation.

Challentgin:g a signnienttts are avsailatole at seteral let els of res :on:sithility intcluodin:g directi:::L of tileecSect ifn' act:i viiti eS. A:alednfic trait:ilng in 'hysics Physic l or Polsyoer Che:::istry (r ibtr

Alethanies antdl ton:side:rahtle experience it: thie alovso areas of thef textile fiter ant3 relat,: fiells a:reptereqltisite for ttie inrthivid1ual selectc d1 to head this progran:. Dtem:ionstratedi ahility toc orgai:ize anda(l:i:iinister hioad(l thecoretitalt anti applitei researchi studies also reqttiredt Siti:ilar trai:lit:g aind inttrestshut less extperiei tee needed for :titer interesting opporttunities in: this gr: cup Tuie i::ipoi tatiec arid coniplexity of this fttitnlaitetnttlt insestigationtal sork will be recognized it: cotmmtttensurate salaries anlprofessioina:l climtate.

The l het:nstrait( lReseart C:(eniter, Inc-a ssliolly owned suobsidtiary of the young a::d vigorous00 Chemttstrandt Corporitioni still retlo:ate in late 1t960 froirn its presettt lDecatur. Alabamisa site to riess lai:orar-tories it: the lRecreal: Ti i;an:gle area of Norti (Carolina.

Fturcloeal: inter: iews csa:n hte arr angedt for applicants *lto are noncitizens of the United States a::dhai:e deci(le:d to in:migra:te to this cotitItry.

If you are interested in associati::g wsiti these new progranis of an expanding research organizatio::,contact or sen(i rescLII:e of atcaclemnic backgroua:d anrd exlpericnce in strictest cottlidence to:

MANAGER, TECHNICAL BOX R15D

EMPLOYMENT AND THE CHEMSTRAND CORPORATIONRECRUITMENT DECATUR, ALABAMA

1329

on April 1, 2020

http://science.sciencem

ag.org/D

ownloaded from

New ProductsJoshua Stern

DOI: 10.1126/science.131.3409.1328 (3409), 1328-1329.131Science 

ARTICLE TOOLS http://science.sciencemag.org/content/131/3409/1328.citation

PERMISSIONS http://www.sciencemag.org/help/reprints-and-permissions

Terms of ServiceUse of this article is subject to the

trademark of AAAS. is a registeredScienceAdvancement of Science, 1200 New York Avenue NW, Washington, DC 20005. The title

(print ISSN 0036-8075; online ISSN 1095-9203) is published by the American Association for theScience

of Science. No claim to original U.S. Government Works.Copyright © 1960 The Authors, some rights reserved; exclusive licensee American Association for the Advancement

on April 1, 2020

http://science.sciencem

ag.org/D

ownloaded from