9 December 1966Vol. 154, No. 3754

LETTERS Lake Tahoe and Soil Pollution: D. E. Elrick; Clearer Views for Astronomy:Another View: J. B. Irwin; Why not a Draft for Applied Research?N. S. Radin ........... ... ............. 1275

EDITORIAL Choosing Graduate Fellows 1279

ARTICLES Quasi-Stellar Objects: Possible Local Origin: J. Terrell .. ... ..............

Circular Dichroism of Biological Macromolecules: S. Beychok ..................

National Document-Handling Systems in Science and Technology: L. F. Carter ....

NEWS AND COMMENT

BOOK REVIEWS

Berkeley-Another Round of Crisis; Hornig Commi,ttee Closing theTechnical Gap; Educational T.V. NSF and Arts Foundation Speak Out ....

Schools and the Disadvantaged: R. C. Nichols ......... ................

Quantum Organic Chemistry, reviewed by P. Gaspar; other reviews byM. J. Klein, J. W. Hedgpeth, A. S. Ketcham, R. H. Wampler, J. A. Kohn,F. L. Haas, D. D. Van Tassel, C. S. French; New Books ..................

REPORTS Stimulated Brillouin and Raman Scattering in Quartz at 2.10 to 2930 Kelvin:P. E. Tannenwold and J. B. Thaxter ....................................

Possibility of Maser Action in Cosmic Radio Sources: R. McCray.Kodiak Seamount Not Flat-Topped: E. L. Hamilton and R. E. von Huene ........Air-Sea Waves from the Explosion of Krakatoa: F. Press and D. Harkrider ......Reversible Inactivation of Aged Solutions of Indolyl-3-Acetic Acid:

A. A. Bitancourt ........ .. ..... .................

Surface Recrystallization of Polyethylene Extended-Chain Crystals:B. Wunderlich and L. Melillo ..........................................

Thiamine Pyrophosphate Hydrochloride: Stereochemical Aspects from an X-RayDiffraction Study: J. Pletcher and M. Sax ..................

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Early Eocene Bat from Wyoming: G. L. Jepsen ................... 1333

Terpenoid Precursors of Hydrocarbons from the Gasoline Range of Petroleum:B. J. Mair et al. ............. ....................................... 1339

Cystinuria: Genetic Heterogeneity and Allelism: L. E. Rosenberg . . 1341

Anaphase Delay after Inhibition of Protein Synthesis between Late Prophaseand Prometaphase: J. E. Cuitnmins, J. C. Blomquist, H. P. Rusch .. 1343

Synthesis of Amino Acid Residues with Reactive Side Chains under SimpleConditions: G. Steinman .............................................. 1344

Activity Rhythms and Adiurnal Light-Dark Control: M. L. R. Goffand F. W. Finger ..................................................

.1346

Adrenalectomy and Coat Color in Deer Mice: F. H. Bronson and S. H. Clarke ... 1349

Cell-Free Protein Synthesis: Effects of Age and State of Ribosomal Aggregation:L. D. Moore, F. J. Kocun, W. W. Umbreit .. .. 1350

Newberyite in Ancient and Modern Urinary Calculi: Identification and Space Group:K. Lonsdale and D. J. Sutor ........................................... 1353

Cytokinin Activity: Localization in Transfer RNA Preparations: F. Skoog et al. .... 1354

Protoperithecia in Neurospora crassa: Technique for Studying Their Developm.ent:H. Rothschild and S. R. Suskind ........................................ 1356

Feedback Inhibition of Key Glycolytic Enzymes in Liver: Action of FreeFatty. Acids: G. Weber et al. . 1357

Photoperiodism in Lemna: Reversal of Night-Interruption Depends on Color of theMain Photoperiod: W. S. Hillman ...................................... 1360

Technical Commnents: Thalidomide Solutions: H. Schumacher, D. Blake, J. Gillette;H. M. Wuest and R. R. Fox . . .1362

ASSOCIATION AFFAIRS Holography: A. DiPentina ..... .. 1363

MEETINGS Pacific Science Congress: R. S. Dietz; GAstrointestinal Circulation:E. D. Jacobson; Forthcoming Events .. 1365

~~~~ .A~~~~~~~~~~~~~~...........O E

/ )~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~..........,STAW ~, $PIHAUS JHN A. )~ Tr~iirtrCOVER

rfH, aM-Iff"nbsd".fobt Skeleton of oldest known fossilbtOiv~~~~~~~~~~~~ ~~Icaronycyeris index,wihsaoy

.......M.........SCE-$()DNITR hoeia etoration of the wingsrn ~Oan ete n they might have

INFOftMATION AND MMUNK~ATR~t$ (T) STATI~TI~ ~ been when the animal was flying in~~,i~~~ari~~ii~~~sWilflam 0. C~~~~~~~chr~~~~~i Early Eocene tim.e 50 millionyears~~~. $teer~~~~~~~~~~ ~ago in Wyoming. Photograph of skele-

........... ton is not retouched, but picture ofoil-shale matrix is extended by corn-~~,, ..~~.. .~. ~~.< ~ posite repetition of photos. Dorsalsi-de, natural size. See pa-ge 1333.

~~~~ ~~~[Princeton University Museum of~~~~~ .. . ~~~ Natural History]

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(3754), 1275-1370.154Science 

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