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Table of Contents

May 01, 1939; vol. 25 no. 5

Genetics

  • You have access
    The Time Factor in X-Ray Production of Chromosome Aberrations
    Karl Sax
    PNAS May 1, 1939 25 (5) 225-233; https://doi.org/10.1073/pnas.25.5.225
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    Induction of Triploidy and Haploidy in the Newt, Triturus Viridescens, by Cold Treatment of Unsegmented Eggs
    Gerhard Fankhauser and Raymond B. Griffiths
    PNAS May 1, 1939 25 (5) 233-238; https://doi.org/10.1073/pnas.25.5.233
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    The Rôle of Developmental Rates in the Production of Notched Wing Characters in Drosophila Melanogaster
    Werner Braun
    PNAS May 1, 1939 25 (5) 238-242; https://doi.org/10.1073/pnas.25.5.238

Astronomy

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    Influences of Limiting Magnitude upon Meteor Frequency
    Fletcher Watson
    PNAS May 1, 1939 25 (5) 243-245; https://doi.org/10.1073/pnas.25.5.243

Physiology and Biochemistry

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    Is Auxin Produced in Roots?
    J. van Overbeek
    PNAS May 1, 1939 25 (5) 245-248; https://doi.org/10.1073/pnas.25.5.245

Botany

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    Cell Polarity and the Differentiation of Root Hairs
    Edmund W. Sinnott and Robert Bloch
    PNAS May 1, 1939 25 (5) 248-252; https://doi.org/10.1073/pnas.25.5.248

Mathematics

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    On Modular and p-Adic Representations of Algebras
    Richard Brauer
    PNAS May 1, 1939 25 (5) 252-258; https://doi.org/10.1073/pnas.25.5.252
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    Number of the Subgroups of Any Abelian Group
    G. A. Miller
    PNAS May 1, 1939 25 (5) 258-262; https://doi.org/10.1073/pnas.25.5.258
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    The Transformation of a Lagrangian Series into a Newtonian Series
    H. Bateman
    PNAS May 1, 1939 25 (5) 262-265; https://doi.org/10.1073/pnas.25.5.262
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