AT COLGATE-PALMOLIVE RESEARCH CENTER...

"Our Mettler top-loaders let us test our ideas on the spot""We usually make formulations of our prototype

materials right on our Mettler P-1200 top-loadingbalance," says Dr. Richard Turse, Senior ResearchChemist at the Colgate-Palmolive Research Center.

"The speed and convenience of the Mettler is im-portant to us. By cutting down on the mechanics ofputting a test material together, we have more timefor theoretical work. With quick, convenient andaccurate formulation, we can try out our ideas righton the spot."

Dr. Turse's laboratory at Colgate-Palmolive workswith proprietary pharmaceutical products-coughsyrups, aerosols, effervescent preparations.

"Because much of our work calls for making upexperimental formulations, the Mettler top-loader is

5 NOVEMBER 1965

in almost continuous use. We tare the beaker weight,add successive components, and fill to target weight...usually 100 or 200 grams. The P-1200 also hasplenty of capacity when we make up kilogramquantities."

The New Brunswick, New Jersey facility is theprimary research arm of the Colgate-Palmolive Com-pany, the world's largest manufacturer of toilet ar-ticles and one of the largest producers of soaps anddetergents. It uses more than 40 Mettler balances inanalytical research and product preparation.

Find out how the new Mettler top-loaders com-bine the precision of analytical balances with top-loading convenience. Let us lend you a balance to tryin your own laboratory. Write Mettler InstrumentCorporation, 20 Nassau Street, Princeton, New Jersey.

655

96

Newly developedfluorescence system forNikon

microscopes offers unusualflexibility in antibody

investigationThe new Nikon Fluorescence Attachment consists of a high-emission UV source and a compactstand on which the microscope is mounted and secured. The two become a single,integrated unit.The attachment enables any Nikon series S microscope to be used for dark-field and phase-con-trast fluorescence, indepenidently or in combination. The changeover is simple and fast, and offersconsiderable convenience. in dealing with fluorescing and non-fluorescing structures.High fluorescence bright- ness is achieved through combined use of a 200-watt, high pres-sure, mercury-vapor lamp, and a large-aperture collector lens of special high UV transmissionglass. The system includes a turret condenser of high aperture with interchangeable insertsfor dark-field or for combined phase fluorescence at all magnifications.The Nikon Fluorescence System is applicable to all fluorescence techniques: antigen-anti-body, acridine-orange, auramine- staining, etc. Filters are turret-mounted, and are selectedby simply rotating the turret. At no time can the eye be exposed to raw UV.For details, write: Nikon Inc., Instrument Division, Garden City, New York 11533.Subsidiary of Ehrenreich Photo-Optical Industries, Inc. In Canada: Anglophoto, Ltd.,Instrument Div., Rexdale,Ontario

Y~

f;qQ SCIENCE, VOL. 150(- )

Which

There are nineteen membersin the family of BeckmanReference Electrodes-just so youcan select the one best relatedto your requirements. There arefour different types of referencejunctions to pick from-asbestosfibre, palladium wire, groundglass sleeve, and porous frit. Eachcan be properly matched toyour specific application for highlyreliable determinations.In all, there are 121 Beckmanelectrodes immediately available.Call your local BeckmanSales Engineer or write for theElectrode Catalog.

INSTRUMENTS, INC.

SCIENTIFIC AND PROCESSINSTRUMENTS DIVISIONFULLERTON, CALIFORNIA * 92634

INTERNATIONAL SUBSIDIARIES: GENEVA, SWITZERLAND;MUNICH, GERMANY; GLENROTHES, SCOTLAND; PARIS,FRANCE; TOKYO, JAPAN; CAPETOWN, SOUTH AFRICA

686

may be in short supply during the day-time, the accelerator may have to beoperated at night only. (If so, touristscould visit the accelerator during theday, and the entrance fees chargedmight pay a significant fraction of theoperating cost.)When repair work must be per-

formed in the circular tunnel, whichwould soon become highly radioactive,accelerator engineers would fill the en-tire tunnel with sea water. Mechanicsemploying aqualungs or diving suitscould then work in complete safety.A separately constructed central

area of the assembly would containmachine shops, special power supplies,a large control room, administrativeheadquarters, and also a kind of motel(with parking for helicopters ratherthan cars) for the crew of approxi-mately 1000 engineers and technicians.Recreation facilities would include amovie theater, squash courts, swim-ming pools, and a specially stockedfishing pool.The plan circumvents rivalry from

groups in different parts of the coun-try. (The possibility of building thequadrants in snialler units that couldpass through the St. Lawrence Sea-way and be assembled in Lake Erieor Lake Michigan has not been ruledout.) Also, four different parts of thecountry could be given contracts forbuilding the four arc-shaped platforms.(Already, a bid has been receivedfrom a Japanese shipbuilding firni ex-perienced in building supertankers.)Since these four quadrants-and thelinac structure and the experimentalhall structures-could be built siniul-taneously in different shipyards, asmuch as 2 years could be saved rela-tive to the time needed to constructa fixed synchrotron.

Only in the last few weeks has thelast and thorniest problem been solved:the problem of radiation beamed to-ward a particular part of the cityadjacent to the harbor in question. Ifan emergent beam were aimed towarda certain portion of the city, personsliving there would receive, during atypical month, five or ten times thepermissible dose (from muons, whichare fundamentally aquatic and cantravel freely in water). The solution isto mount a 5-hp outboard motor tan-gentially at the outer edge of the plat-form and keep the motor runningcontinuously, so as to rotate the en-tire accelerator at the rate of onerevolution per week and thus distrib-ute the radiation uniformly along the

entire harbor-front. The direction ofrotation will be the same as that ofthe protons in the accelerator, so asto add to their speed; even a slightincrease is significant if the particlesare already traveling at a speed al-most equal to that of light.

WILLIAM A. SHURCLIFFUnderwater Consultant, CECU,42 Oxford Street,Camnbridge, Massachusetts

Metric System: Easy Conversions

Anyone who did not read ManuelMateos' letter (24 Sept., p. 1450)missed an important proposal. Mateossuggests a "metricized British system"whereby our quart and pound wouldbe nmade slightly larger, thus makingthe new "metric quart" equal to 1liter and the "metric pound" to 1/2kilogram; the inch would becomea bit shorte,r so that 1 "metric inch"would equal 25 millimeters and 40"metric inches"-1 "metric yard"-would be 1 meter.

This would be an easy way to makethe metric system niore acceptable tothe general public. More important,however, for those of us who are notinterested in the precise conversionwhen reading (or writing) articles us-

ing metric units, it is an ideal methodof beginning to think in these equiva-lent units without constantly referringto conversion factors.

R. G. PETERSENU.S. Geological Survey, WaterResources Division, 211 CongressStreet, Boston, Massachusetts 02110

Psychologists' Title

In the recent exchange of lettersabout degrees and titles, Wiesinger(10 Sept., p. 1174) writes that "it isnot good form in English for a Ph.D....to refer to himself as Dr.It should be noted that the clinicalpsychologist, who is a Ph.D., cannotfunction professionally without refer-ring to himself as "Dr." If he callshimself "Mr." he is respected byneither his physician colleagues nor hispatients. This poses a special problemfor psychologists who work simultane-ously in clinical and academic settings.

JOHN G. WATKINSDepartment of Psychology,,University of Montana, Missoula

SCIENCE, VOL. 15011 - --'- I.

pulse height analysis...TMC style

The fast, flexible 1001 has more built-in featuresthan any other 1024-channel analyzer ever made

PULSE HEIGHT ANALYZER -104 CHANNELS -MODEL 1001

LIVE TIME

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TECIINIB." ziRsmatCMIT cORPORATIOIVIRIII MAIfA.CtAORTIRt, U.SA.

The TMC 1001 has a 12.5 megacycle ADC, faster memory cycletime, and operates at higher counting rates than any previous1024-channel ainalyzer. For flexibility, it has built-in, switch-selectable modes for simultaneous single and multi-channelpulse height analysis, multiscaling and analog sampling. Its pro-gramming can be automatic, semi-auLtomatic, manual or ex-ternally controlled. Set the 1001's conversion gain switch in its2x position and you've got resolution in a selected area equiv-alent to that of a 2048-channel analyzer. It's TMC stylestraight through.You'd expect the 1001 to have a variable-width, single-channel

window . . . and it does. Superimposed over the multi-channel

display, it gives you a direct, visual reference for energy calibra-tion pturposes. The 1001 also has display overlap for separatequarters or halves of the memory, in both linear and log modes.Individual centering controls simplify comparison- in eithermode. And as for compatibility, the 1001 is directly compatiblewith every standard type of analog or digital readout device.We know that you can't find a 1024-channel analyzer any-

where that will match the flexibility, reliability and speed ofthe 1001. TMC likes being first. If you're inclined the same way,you'll want all the facts on the 1001. To get them, write: NuclearDivisioni, Technical Measurement Corporation, 441 WashingtonAvenue, North Haven, Connecticut 06473.

T E C H N I C A LMEASUREMENTCORPORATION

SCIENCE, VOL. 150694

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