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About the Cover

February 01, 1930; vol. 16 no. 2

Physics

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    On the Diamagnetism of Electrons in Metals
    Francis Bitter
    PNAS February 1, 1930 16 (2) 95-98; https://doi.org/10.1073/pnas.16.2.95
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    On the Experimental Evidence of the Mosaic Structure of Bi-Single Crystals
    Alexander Goetz
    PNAS February 1, 1930 16 (2) 99-105; https://doi.org/10.1073/pnas.16.2.99

Genetics

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    The First Two Cases of Crossing-Over between Old-Gold and Bullata Factors in the Third Linkage Group of Oenothera
    George H. Shull
    PNAS February 1, 1930 16 (2) 106-109; https://doi.org/10.1073/pnas.16.2.106

ZoÖlogy

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    Somatic Segregation Produced by X-Rays in Drosophila Melanogaster
    J. T. Patterson
    PNAS February 1, 1930 16 (2) 109-111; https://doi.org/10.1073/pnas.16.2.109

Astronomy

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    The Radial Velocities of Globular Clusters
    P. ten Bruggencate
    PNAS February 1, 1930 16 (2) 111-118; https://doi.org/10.1073/pnas.16.2.111

Chemistry

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    Solid Protein Hydrochlorides
    Wilder D. Bancroft and C. E. Barnett
    PNAS February 1, 1930 16 (2) 118-123; https://doi.org/10.1073/pnas.16.2.118
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    The Structure of the Micas and Related Minerals
    Linus Pauling
    PNAS February 1, 1930 16 (2) 123-129; https://doi.org/10.1073/pnas.16.2.123
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    The Decomposition of Nitrogen Pentoxide at Low Pressures
    Hans-Joachim Schumacher and Gerhard Sprenger
    PNAS February 1, 1930 16 (2) 129-135; https://doi.org/10.1073/pnas.16.2.129
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    Adsorption of Ammonia by Proteins
    Wilder D. Bancroft and C. E. Barnett
    PNAS February 1, 1930 16 (2) 135-139; https://doi.org/10.1073/pnas.16.2.135

Mathematics

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    Determination of Some Properly Irregular Cyclotomic Fields
    Elizabeth T. Stafford and H. S. Vandiver
    PNAS February 1, 1930 16 (2) 139-150; https://doi.org/10.1073/pnas.16.2.139
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    On an Extension of the Fourier Theorem Giving Rapid Methods for Calculating the Constant Part and the Coefficient of Any Periodic Term in the Disturbing Function
    Ernest W. Brown
    PNAS February 1, 1930 16 (2) 150-156; https://doi.org/10.1073/pnas.16.2.150
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    Content-Preserving Transformations
    M. S. Knebelman
    PNAS February 1, 1930 16 (2) 156-159; https://doi.org/10.1073/pnas.16.2.156
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    Simplicity with Respect to Certain Quadratic Forms
    E. T. Bell
    PNAS February 1, 1930 16 (2) 160-162; https://doi.org/10.1073/pnas.16.2.160
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    The Differential Geometry of a Continuous Infinitude of Contravariant functional Vectors
    Aristotle D. Michal
    PNAS February 1, 1930 16 (2) 162-164; https://doi.org/10.1073/pnas.16.2.162
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    Projective Functional Tensors and Other Allied Functionals
    Aristotle D. Michal
    PNAS February 1, 1930 16 (2) 165-168; https://doi.org/10.1073/pnas.16.2.165
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    Non-Abelian Groups Admitting More Than Half Inverse Correspondencies
    G. A. Miller
    PNAS February 1, 1930 16 (2) 168-172; https://doi.org/10.1073/pnas.16.2.168
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    Linear Transformations in Hilbert Space
    M. H. Stone
    PNAS February 1, 1930 16 (2) 172-175; https://doi.org/10.1073/pnas.16.2.172
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