New Research In

Table of Contents

April 01, 1961; vol. 47 no. 4

Anthropology

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CHAIRMAN'S OPENING REMARKS
Carleton S. Coon

PNAS April 1, 1961 47 (4) 427; https://doi.org/10.1073/pnas.47.4.427
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PHENOMENA ASSOCIATED WITH POPULATION DENSITY
John J. Christian

PNAS April 1, 1961 47 (4) 428-449; https://doi.org/10.1073/pnas.47.4.428
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EVOLUTION AND INTEGRATION OF MECHANISMS THAT REGULATE POPULATION GROWTH
Robert L. Snyder

PNAS April 1, 1961 47 (4) 449-455; https://doi.org/10.1073/pnas.47.4.449
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DISCUSSION OF THE PAPERS BY CHRISTIAN AND SNYDER
Herbert L. Ratcliffe

PNAS April 1, 1961 47 (4) 455-458; https://doi.org/10.1073/pnas.47.4.455
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ON BEING JUST COMPLICATED ENOUGH
Anthony F. C. Wallace

PNAS April 1, 1961 47 (4) 458-464; https://doi.org/10.1073/pnas.47.4.458

Biochemistry

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INTERACTION OF SMALL IONS AND MOLECULES WITH RIBONUCLEIC ACID
Raymond A. Brown

PNAS April 1, 1961 47 (4) 465-469; https://doi.org/10.1073/pnas.47.4.465
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THE DE NOVO SYNTHESIS OF POLYSACCHARIDE BY PHOSPHORYLASE
Barbara Illingworth, David H. Brown, and Carl F. Cori

PNAS April 1, 1961 47 (4) 469-478; https://doi.org/10.1073/pnas.47.4.469
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THE MECHANISM OF THE DE NOVO SYNTHESIS OF POLYSACCHARIDE BY PHOSPHORYLASE
David H. Brown, Barbara Illingworth, and Carl F. Cori

PNAS April 1, 1961 47 (4) 479-485; https://doi.org/10.1073/pnas.47.4.479
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CRYSTALLINE LUCIFERIN FROM A LUMINESCENT FISH, PARAPRIACANTHUS BERYCIFORMES
F. H. Johnson, N. Sugiyama, O. Shimomura, Y. Saiga, and Y. Haneda

PNAS April 1, 1961 47 (4) 486-489; https://doi.org/10.1073/pnas.47.4.486
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THE IDENTIFICATION OF A RIBOSOMAL-BOUND β-GLUCOSIDASE
H. K. Kihara, A. S. L. Hu, and H. O. Halvorson

PNAS April 1, 1961 47 (4) 489-497; https://doi.org/10.1073/pnas.47.4.489
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AMINO ACID TRANSFER FROM AMINOACYL-RIBONUCLEIC ACIDS TO PROTEIN ON RIBOSOMES OF ESCHERICHIA COLI
Daniel Nathans and Fritz Lipmann

PNAS April 1, 1961 47 (4) 497-504; https://doi.org/10.1073/pnas.47.4.497
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RECOMBINATION DURING TRANSFORMATION IN HEMOPHILUS INFLUENZAE
Mary Jane Voll and Sol H. Goodgal

PNAS April 1, 1961 47 (4) 505-512; https://doi.org/10.1073/pnas.47.4.505
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PURIFICATION AND IMMUNOLOGICAL CHARACTERIZATION OF TYPES 4 AND 5 ADENOVIRUS-SOLUBLE ANTIGENS
Wesley C. Wilcox and Harold S. Ginsberg

PNAS April 1, 1961 47 (4) 512-526; https://doi.org/10.1073/pnas.47.4.512

Chemistry

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SIGNIFICANT LIQUID STRUCTURES, VI. THE VACANCY THEORY OF LIQUIDS
Henry Eyring and Taikyue Ree

PNAS April 1, 1961 47 (4) 526-537; https://doi.org/10.1073/pnas.47.4.526

Engineering

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A MATHEMATICAL AID IN OPTIMIZING ENGINEERING DESIGNS
Clarence Zener

PNAS April 1, 1961 47 (4) 537-539; https://doi.org/10.1073/pnas.47.4.537

Genetics

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TRANSITIONS AND TRANSVERSIONS INDUCED BY DEPURINATING AGENTS
Elisabeth Bautz Freese

PNAS April 1, 1961 47 (4) 540-545; https://doi.org/10.1073/pnas.47.4.540
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FORMATION OF DUPLICATION-DEFICIENCY PRODUCTS BY ASYMMETRICAL EXCHANGE WITHIN A COMPLEX LOCUS OF DROSOPHILA MELANOGASTER
B. H. Judd

PNAS April 1, 1961 47 (4) 545-550; https://doi.org/10.1073/pnas.47.4.545
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THE PROPERTIES OF ALTERED PROTEINS FROM MUTANTS BEARING ONE OR TWO LESIONS IN THE SAME GENE
Barbara D. Maling and Charles Yanofsky

PNAS April 1, 1961 47 (4) 551-566; https://doi.org/10.1073/pnas.47.4.551
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PROGRESSIVE CONVERSION OF R-LOCUS EXPRESSION IN MAIZE
Bernard C. Mikula

PNAS April 1, 1961 47 (4) 566-571; https://doi.org/10.1073/pnas.47.4.566
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AN XXY MALE IN THE MOUSE
Liane Brauch Russell and Ernest H. Y. Chu

PNAS April 1, 1961 47 (4) 571-575; https://doi.org/10.1073/pnas.47.4.571

Geophysics

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EXTRA-TERRESTRIAL LIFE
Philip H. Abelson

PNAS April 1, 1961 47 (4) 575-581; https://doi.org/10.1073/pnas.47.4.575

Mathematics

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UNIFORM CONVERGENCE OF MONOTONE SEQUENCES OF FUNCTIONS
S. Bochner

PNAS April 1, 1961 47 (4) 582-585; https://doi.org/10.1073/pnas.47.4.582
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SOME ASPECTS OF THE FERMAT PROBLEM (SECOND PAPER)
H. S. Vandiver

PNAS April 1, 1961 47 (4) 585-590; https://doi.org/10.1073/pnas.47.4.585

Physics

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GENERALIZED INVARIANT IMBEDDING RELATION
R. W. Preisendorfer

PNAS April 1, 1961 47 (4) 591-594; https://doi.org/10.1073/pnas.47.4.591

Physiology

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SPECIFIC HOMOGRAFT TOLERANCE IN LYMPHOID CELLS OF LONGLIVED RADIATION CHIMERAS
L. J. Cole and W. E. Davis Jr.

PNAS April 1, 1961 47 (4) 594-602; https://doi.org/10.1073/pnas.47.4.594

ZoÃ¶logy

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THE GEOMETRY OF COILING IN GASTROPODS
David M. Raup

PNAS April 1, 1961 47 (4) 602-609; https://doi.org/10.1073/pnas.47.4.602
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PROLONGATION OF THE LIFE SPAN OF KOKANEE SALMON (ONCORHYNCHUS NERKA KENNERLYI) BY CASTRATION BEFORE BEGINNING OF GONAD DEVELOPMENT
O. H. Robertson

PNAS April 1, 1961 47 (4) 609-621; https://doi.org/10.1073/pnas.47.4.609