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Table of Contents

January 01, 1928; vol. 14 no. 1

Biology

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    The Growth of Seedlings of the Canteloup, Cucumis Melo, in the Absence of Exogenous Food and Light
    Raymond Pearl, Agnes Allen Winsor, and John Rice Miner
    PNAS January 1, 1928 14 (1) 1-4; https://doi.org/10.1073/pnas.14.1.1

Geology

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    Some Factors in Rock Metamorphism
    David White
    PNAS January 1, 1928 14 (1) 5-7; https://doi.org/10.1073/pnas.14.1.5
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    Late Tertiary Thrust Faults in the Mojave Desert, California
    D. F. Hewett
    PNAS January 1, 1928 14 (1) 7-12; https://doi.org/10.1073/pnas.14.1.7

Physics

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    The Quantum Levels and Resulting Constants of the Hydrogen Molecule
    Raymond T. Birge
    PNAS January 1, 1928 14 (1) 12-19; https://doi.org/10.1073/pnas.14.1.12
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    The Scattering of X-Rays from Gases
    Charles S. Barrett
    PNAS January 1, 1928 14 (1) 20-23; https://doi.org/10.1073/pnas.14.1.20
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    The Distribution of Energy in Molecules
    Louis S. Kassel
    PNAS January 1, 1928 14 (1) 23-30; https://doi.org/10.1073/pnas.14.1.23
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    The Life of Atomic States and the Intensity of Spectral Lines
    I. S. Bowen
    PNAS January 1, 1928 14 (1) 30-32; https://doi.org/10.1073/pnas.14.1.30
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    THE SPECTRA OF SINGLY AND DOUBLY IONIZED GERMANIUM (GE II AND III)
    R. J. Lang
    PNAS January 1, 1928 14 (1) 32-36; https://doi.org/10.1073/pnas.14.1.32
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    The Structure and Dimensions of the Ethane Molecule
    Jared Kirtland Morse
    PNAS January 1, 1928 14 (1) 37-40; https://doi.org/10.1073/pnas.14.1.37
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    The Lattice Structure of Ethane
    Jared Kirtland Morse
    PNAS January 1, 1928 14 (1) 40-45; https://doi.org/10.1073/pnas.14.1.40
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    Relations of Field-Currents to Thermionic-Currents
    R. A. Millikan and C. C. Lauritsen
    PNAS January 1, 1928 14 (1) 45-49; https://doi.org/10.1073/pnas.14.1.45
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    The Photochemical Union of Hydrogen and Chlorine
    Louis Harris
    PNAS January 1, 1928 14 (1) 110-112; https://doi.org/10.1073/pnas.14.1.110

Chemistry

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    The Density, Compressibility and Atomic Weight of Neon
    Gregory Paul Baxter and Howard Warner Starkweather
    PNAS January 1, 1928 14 (1) 50-57; https://doi.org/10.1073/pnas.14.1.50
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    The Density, Compressibility and Atomic Weight of Argon
    Gregory Paul Baxter and Howard Warner Starkweather
    PNAS January 1, 1928 14 (1) 57-63; https://doi.org/10.1073/pnas.14.1.57

Botany

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    The Chromosomes of Pellia Neesiana
    A. M. Showalter
    PNAS January 1, 1928 14 (1) 63-66; https://doi.org/10.1073/pnas.14.1.63

Genetics

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    The Production of Variation in Nicotiana Species by X-Ray Treatment of Sex Cells
    T. H. Goodspeed and A. R. Olson
    PNAS January 1, 1928 14 (1) 66-69; https://doi.org/10.1073/pnas.14.1.66
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    Genetic Effects of X-Rays in Maize
    L. J. Stadler
    PNAS January 1, 1928 14 (1) 69-75; https://doi.org/10.1073/pnas.14.1.69
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    General Theory of Polygenic or Non-Monogenic Functions
    Edward Kasner
    PNAS January 1, 1928 14 (1) 75-82; https://doi.org/10.1073/pnas.14.1.75

Mathematics

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    Number of Systems of Imprimitivity of Transitive Substitution Groups
    G. A. Miller
    PNAS January 1, 1928 14 (1) 82-84; https://doi.org/10.1073/pnas.14.1.82
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    Concerning Triods in the Plane and the Junction Points of Plane Continua
    R. L. Moore
    PNAS January 1, 1928 14 (1) 85-88; https://doi.org/10.1073/pnas.14.1.85

Astronomy

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    On Methods and Applications in Spectrophotometry
    Cecilia H. Payne and Frank S. Hogg
    PNAS January 1, 1928 14 (1) 88-93; https://doi.org/10.1073/pnas.14.1.88

Physiology

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    The Effect of Posture upon the Composition and Volume of the Blood in Man
    Willard Owen Thompson, Pehbe K. Thompson, and Mary Elizabeth Dailey
    PNAS January 1, 1928 14 (1) 94-98; https://doi.org/10.1073/pnas.14.1.94

Statistics

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    Sterility in American Marriages
    Alfred J. Lotka
    PNAS January 1, 1928 14 (1) 99-109; https://doi.org/10.1073/pnas.14.1.99
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