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Table of Contents

July 15, 1930; vol. 16 no. 7

Chemistry

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    THE STRUCTURE OF SOME SODIUM AND CALCIUM ALUMINOSILICATES
    Linus Pauling
    PNAS July 15, 1930 16 (7) 453-459; https://doi.org/10.1073/pnas.16.7.453

Physiology and Pathology

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    THE DEMONSTRATION THAT ALLERGIC INFLAMMATION IS NOT NECESSARY FOR THE OPERATION OF ACQUIRED IMMUNITY
    Arnold Rice Rich
    PNAS July 15, 1930 16 (7) 460-464; https://doi.org/10.1073/pnas.16.7.460

Astronomy

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    ON THE SYSTEMATIC AND ACCIDENTAL ERRORS OF MODERN TRIGONOMETRIC PARALLAXES
    Willem J. Luyten
    PNAS July 15, 1930 16 (7) 464-473; https://doi.org/10.1073/pnas.16.7.464
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    ON THE DISTANCES AND RADIAL VELOCITIES OF EXTRA-GALACTIC NEBULAE, AND THE EXPLANATION OF THE LATTER BY THE RELATIVITY THEORY OF INERTIA
    W. de Sitter
    PNAS July 15, 1930 16 (7) 474-488; https://doi.org/10.1073/pnas.16.7.474

Mathematics

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    THE CELLULAR DIVISION AND APPROXIMATION OF REGULAR SPREADS
    S. S. Cairns
    PNAS July 15, 1930 16 (7) 488-491; https://doi.org/10.1073/pnas.16.7.488
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    NORMAL COÖRDINATES IN THE GEOMETRY OF PATHS
    Harry Levy
    PNAS July 15, 1930 16 (7) 492-496; https://doi.org/10.1073/pnas.16.7.492

Physics

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    THE CRYSTAL CLOCK
    W. A. Marrison
    PNAS July 15, 1930 16 (7) 496-507; https://doi.org/10.1073/pnas.16.7.496
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    THE BAND SPECTRUM OF OZONE IN THE VISIBLE AND PHOTOGRAPHIC INFRA-RED
    Oliver R. Wulf
    PNAS July 15, 1930 16 (7) 507-511; https://doi.org/10.1073/pnas.16.7.507
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    ON THE ESTIMATION OF DISTANCES IN A CURVED UNIVERSE WITH A NON-STATIC LINE ELEMENT
    Richard C. Tolman
    PNAS July 15, 1930 16 (7) 511-520; https://doi.org/10.1073/pnas.16.7.511

ZoÖlogy

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    EXPERIMENTS IN BIRD MIGRATION. II. REVERSED MIGRATION
    William Rowan
    PNAS July 15, 1930 16 (7) 520-525; https://doi.org/10.1073/pnas.16.7.520
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