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Dodson - Textbook of EvolutionWritten in a clear and interesting style, this long-neededtextbook is sound and up-to-date in content and strictlyscientific in approach. It presents, on the undergraduatelevel, today's understanding of organic evolution basedon studies of both paleontology and genetics.In general, the author has woven into a solid framework(1) a summary of the traditional viewpoints on evolutionwith (2) a synthesis of the newer viewpoints, principallyfrom the field of genetics.You'll find the answers to such vital questions as: how doesbiogeography support evolution; what are the two mainproblems of evolution; how might living systems havefirst arisen; how did sex originate; can natural selectionbe demonstrated experimentally; what are the maintheories of distribution of organisms.By EDWARD 0. DODSON, Associate Professor of Zoology, University of NotreDame. 419 pages, 6" x 9", with 101 illustrations. $5.00.

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,SCIE:NCE, VOL. 114()

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Here'swhat

the book covers:Part OneThe Fiber We SeeFiber MeasurementThe Effects of Time,

Temperature andMoisture

Physical StructureChemical StnrcturePart TwoTexture and HandFit, Shape Retention

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Woolas an Apparel Fiber

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Mr. Hopkins gives you in non-technical lan-guage-illustrated with numerous line drawingsa practical, complete and objective presenta-

tion of wool as we see it, handle it, fabricate it,and use it.

About the author ... GILES E. HOPKINS is inter-nationally known as the pioneer of functionalized re-search and development in textile mills. He has beentechnical director of The Wool Bureau, Inc. since its

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SCIENCE, VOIj. 120

FOR

RESEARCH

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What General Electric People Are Saying...

F. K. McCUNEMr. McCune is General Manager, Atomic ProductsDivision''. . . We at General Electric believe that elec-tric companies will be owning and operating anumber of atomic power plants within the nextten years.

Second, we believe some of these will befull-scale and, what is most important, theywill generate electricity at competitive costs,possibly within five, certainly within ten, years.

Third, we believe that this will be accom-plished without Government subsidy for pro-uction plant construction or operation, and

that Government-supplied fuel will be pricedat cost-of-production evels.

BOILING WATER REACTOR, of type developedby the Atomic Energy Commission's ArgonneNational Laboratory.

Fourth, we believe that two nuclear reactorsbest suited for earliest and most effective com-petition with conventional fuel plants in thiscountry are (a) the light water-moderated andcooled boiling reactor, and (b) the graphite-moderated water-cooled reactor. These wethink hold greatest promise in the years justahead.

In saying these production plants will operatewithout Government subsidy, I do not wishto detract from the immeasurable significance ofknowledge developed through A.E.C. con-tracts. Of course, the Government's large ex-penditures for research and development ofplutonium production reactors, mob.le powerreactors, and other power reactors form thebase from which private industry can proceed.

But, the important thing here is that we believeproduction size atomic power plants can be madeeconomic. They will stand on their own feet.They may sell products to the Government.They will certainly buy nuclear fuel from theGovernment. But, trading with the Govern-ment need not be-a subsidy."

Atomic Industrial Forum PanetWashington, D. Cs

K. R. GEISERMr. Geiser is Supervisor of Engineering-ComputerUnit, General Engiieering Laboratory.''. . . There are three broad areas of manufac-turing-manual, mechanization, and automa-tion. In the manual area, physical effort is usedto perform an op.eration by the use of handsor hand tools. In the mechanization area,manually operated power-driven machines, withvarying degrees of controls, are used to performone or more opevations. Progressing into theautomation area, we find automatic machineswhich are integrated with transfer devices toperform a series of continuous automatic opera-tions. Here you see how industry can continuallyupgrade the manutal operation into the mechani-zation area by replacing the hand tool with themachine; and then by adding transfer equipmentwe progress to the automation area. Pleasenote that manpower will always be required.However, there will undoubtedly be fewer menas operations are automated and the emphasiswill shift from tlte manual skills to the mentalskills for both tl4e productive and the mainte-nance worker.Man has always devoted much of his effort

to finding ways and means to accomplish orcircumvent the arduous and laborious tasks,especially those not requiring his full abilityas a human being.As surely as men lives and thinks and strives

for a better way of life, these things will be re-placed.

G.E. Engineering Specialist

pmrS" Is Our Mos /mporA*nm Ptvdt

GENERAt ( ELECTRIC

SCIENCE is published weekly by the AAAS, 1515 Massachusetts Ave., NW, Washington 5, D. C. Entered at the Lancaster, Pa., Post Office as seeondclass matter under the act of March 3, 1879. Annual subscriptions: $7.50; foreign postage, outside the Pan-American Union, $1; Canadian postage, 50#.

3 SEPTEMBER 1954 5A

* Methioninol, dl* Methoxinine, dl* 9-Methylanthracene* Methyl Arachidonate* 5-Methylbenzotriazole* a-Methylcellobioside* ,-Methylcellobioside* 5-Methylcytosine* 5-Methylfurfural* Methyl Glucuronide* a-Methylgluta-ric Acid* 3-Methylglutaric Acid* Methylheptenone* 4-Methylimidazole* 7-Methylindole* Methyl IsocyanateMethyl Isothiocyanate

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SCIENCE, VOL. 120

GARCEAU ELECTROENCEPHALOGRAPHSA.C. Operated No Batteries

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THE JUNIOR GARCEAUELECTROENCEPHALOGRAPH

A simplified inexpensive instrument for recording electricalpotentials of the brain. Built-in interference eliminators per-mit use anywhere. Inkless records-no photography or film-development required. Instantaneous localization with any2 of the 10 leads. Price $575.00 complete.All Garceau Electroencephalographs operate en-tirely from the 115 volts 50 or 60 cycle power lines.

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12 Miscellaneous CompoundsWrite for complete list

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Scanning radiochromatogramswith Nuclear-Chicago's new"Actigraph" saves valuabletechnician time - completelyeliminates strip dissection ortedious manual assay proced-ures. Separated componentsare accurately located, and therecorder chart provides a per-manent parallel record of theradioactivity measured alongthe strip.

The system consists of an auto-matic strip feeder, a lead shieldcontaining a thin mica end win-dow counter and collimating slit,an analytical count-rate meter,and a recorder. The strip feederis driven by a flexible cable from

the recorder at the exact speedof the recorder chart, thusassuring precise correlation be-tween the graph and the radio-labeled spots on the chromat-ogram. Change gears permitcounting at various speeds.Standard accessories includetables for sample pans or ab-sorbers.

Nuclear-Chicago offers a fullline of products from carbon-14labeled compounds and filmbadges to a completely equip-ped radioisotope laboratory.Write for specifications on the"Actigraph" or for our assist-ance on any radioisotope prob-lem you may have.

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Off the press . . .Annual Review

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"These volumes . . . not only provide an excel-lent basis for a reference section in one's ownlibrary, but also provide . . . a personal assess-nment of modern trends in research by recognizedauthorities." Transactions of the Faraday So-ciety, March, 1954

Contents: Thernochemistry and the Thermodynamic Properties of Substances, L. E. Steiner; Heterogeneous Equilibriaand Phase Diagrams, W. A. Gale; Solutions of Electrolytes, H. S. Frank and M.-S. Tsao; Solutions of Nonelectrolytes,J. C. Morrow and 0. K. Rice; Isotopes, W. M. Jones; Radioactivity and Nuclear Structure, I. Perlman and J. M. Hollan-der; Radiation Chemistry, E. J. Hart; Theory of Molecular Structure and Spectra, A. D. Walsh; Spectroscopy, A. B.F. Duncan; The Solid State, R. H. Bube, F. Herman, and H. W. Leverenz; Kinetics of Reactions in Solution, F. A. Long;Kinetics of Reactions in Gases, J. C. Robb; Properties of Macromolecules in Solution, F. T. Wall and L. A. Hiller, Jr.;Colloid Chemistry, S. A. Troelstra; Cryogenics, E. A. Long and L. Meyer; Nuclear Magnetic Resonance, H. S. Gutowsky;Crystallography, E. G. Cox; Surface Chemistry and Catalysis, G. Jura; The Microwave Spectra of Gases, R. J. Myersand W. D. Gwinn; Experimental Molecular Structure, R. L. Livingston; Ion Exchange, J. Schubert; Statistical Mechanicsof Transport and Nonequilibrium Processes, E. W. Montroll and MI. S. Green; Modern Aspects of Electrode Kinetics, J.O'M. Bockris.

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STEREOMICROSCOPESI.I

SCIENCE, VOL. 120

I