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Table of Contents

April 15, 1929; vol. 15 no. 4

Physics

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    ON THE POSSIBLE LINE ELEMENTS FOR THE UNIVERSE
    Richard C. Tolman
    PNAS April 15, 1929 15 (4) 297-304; https://doi.org/10.1073/pnas.15.4.297
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    THE EXISTENCE OF RADIOACTIVE RECOIL IONS OF HIGH MOBILITY
    Lora Lane Loeb and Leonard B. Loeb
    PNAS April 15, 1929 15 (4) 305-310; https://doi.org/10.1073/pnas.15.4.305
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    AN INTENSITY GAUGE FOR “SUPERSONIC” RADIATION IN LIQUIDS
    William T. Richards
    PNAS April 15, 1929 15 (4) 310-314; https://doi.org/10.1073/pnas.15.4.310
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    HYDROGEN-ION WAVE FUNCTION
    V. Guillemin Jr. and C. Zener
    PNAS April 15, 1929 15 (4) 314-318; https://doi.org/10.1073/pnas.15.4.314
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    LATENT CARRIERS OF ELECTRICITY IN THE GASEOUS DISCHARGE
    S. A. Ratner
    PNAS April 15, 1929 15 (4) 318-323; https://doi.org/10.1073/pnas.15.4.318
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    GRAVITATION AND THE ELECTRON
    Hermann Weyl
    PNAS April 15, 1929 15 (4) 323-334; https://doi.org/10.1073/pnas.15.4.323

Chemistry

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    RAMAN SPECTRA OF SOLUTIONS OF SOME IONIZED SUBSTANCES
    Roscoe G. Dickinson and Robert T. Dillon
    PNAS April 15, 1929 15 (4) 334-337; https://doi.org/10.1073/pnas.15.4.334
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    THE CRYSTAL STRUCTURE OF STRONTIUM
    A. J. King
    PNAS April 15, 1929 15 (4) 337-338; https://doi.org/10.1073/pnas.15.4.337

Genetics

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    SELECTIVE SEGREGATION OF CHROMOSOMES IN MALES OF A THIRD SPECIES OF SCIARA
    Chas. W. Metz
    PNAS April 15, 1929 15 (4) 339-343; https://doi.org/10.1073/pnas.15.4.339
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    THE OCCURRENCE OF CHROMOSOME VARIANTS IN NICOTIANA ALATA LK. ET OTTO
    Thomas Harper Goodspeed and Priscilla Avery
    PNAS April 15, 1929 15 (4) 343-345; https://doi.org/10.1073/pnas.15.4.343

Geology and Paleontology

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    AN EOGENE TROPICAL FOREST IN THE PERUVIAN DESERT
    Edward W. Berry
    PNAS April 15, 1929 15 (4) 345-346; https://doi.org/10.1073/pnas.15.4.345

Astronomy

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    ON THE STABILITY OF GASEOUS STELLAR STRUCTURES
    B. P. Gerasimovič
    PNAS April 15, 1929 15 (4) 347-353; https://doi.org/10.1073/pnas.15.4.347

Mathematics

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    ON THE SPHERICALLY SYMMETRICAL STATICAL FIELD IN EINSTEIN'S UNIFIED THEORY OF ELECTRICITY AND GRAVITATIONS
    N. Wiener and M. S. Vallarta
    PNAS April 15, 1929 15 (4) 353-356; https://doi.org/10.1073/pnas.15.4.353
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    UNIMOLECULAR REACTIONS
    D. G. Bourgin
    PNAS April 15, 1929 15 (4) 357-362; https://doi.org/10.1073/pnas.15.4.357
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    A GENERALIZATION OF ROLLE'S THEOREM WITH APPLICATION TO ENTIRE FUNCTIONS
    J. Dieudonné
    PNAS April 15, 1929 15 (4) 362-367; https://doi.org/10.1073/pnas.15.4.362
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    DUALITY RELATIONS IN TOPOLOGY
    S. Lefschetz
    PNAS April 15, 1929 15 (4) 367-369; https://doi.org/10.1073/pnas.15.4.367
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    GROUPS WHICH ADMIT THREE-FOURTHS AUTOMORPHISMS
    G. A. Miller
    PNAS April 15, 1929 15 (4) 369-372; https://doi.org/10.1073/pnas.15.4.369
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    THE RANK FUNCTION OF ANY SIMPLE ALGEBRA
    A. Adrian Albert
    PNAS April 15, 1929 15 (4) 372-376; https://doi.org/10.1073/pnas.15.4.372
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    CONFORMAL GEOMETRY OF GENERALIZED METRIC SPACES
    M. S. Knebelman
    PNAS April 15, 1929 15 (4) 376-379; https://doi.org/10.1073/pnas.15.4.376
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