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Table of Contents

December 15, 1929; vol. 15 no. 12

Genetics

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    UNISEXUAL PROGENIES AND THE SEX CHROMOSOME MECHANISM IN SCIARA
    Chas. W. Metz and M. Louise Schmuck
    PNAS December 15, 1929 15 (12) 863-866; https://doi.org/10.1073/pnas.15.12.863
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    FURTHER STUDIES ON THE CHROMOSOME MECHANISM RESPONSIBLE FOR UNISEXUAL PROGENIES IN SCIARA. TESTS OF EXCEPTIONAL MALES
    Chas. W. Metz and M. Louise Schmuck
    PNAS December 15, 1929 15 (12) 867-870; https://doi.org/10.1073/pnas.15.12.867
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    CHANGES IN THE RATE OF MUTABILITY OF THE MUTABLE MINIATURE GENE OF DROSOPHILA VIRILIS
    M. Demerec
    PNAS December 15, 1929 15 (12) 870-876; https://doi.org/10.1073/pnas.15.12.870
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    CHROMOSOME NUMBER AND THE MUTATION RATE IN AVENA AND TRITICUM
    L. J. Stadler
    PNAS December 15, 1929 15 (12) 876-881; https://doi.org/10.1073/pnas.15.12.876

Botany

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    A PROPOSED PHYLOGENY OF THE ONAGRACEAE BASED PRIMARILY ON NUMBER OF CHROMOSOMES
    Donald A. Johansen
    PNAS December 15, 1929 15 (12) 882-885; https://doi.org/10.1073/pnas.15.12.882
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    THE CHROMOSOMES OF BUGINVILLAEA
    Delmer C. Cooper
    PNAS December 15, 1929 15 (12) 885-887; https://doi.org/10.1073/pnas.15.12.885

Biology

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    NEW RESULTS FROM THE STUDY OF COELENTERATE NEMATOCYSTS
    Robert F. Weill
    PNAS December 15, 1929 15 (12) 887-892; https://doi.org/10.1073/pnas.15.12.887

Physics

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    AN INTERFEROMETER METHOD OF OBSERVING THE VIBRATIONS OF AN OSCILLATING QUARTZ PLATE
    Harold Osterberg
    PNAS December 15, 1929 15 (12) 892-896; https://doi.org/10.1073/pnas.15.12.892
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    PERTURBATIONS IN BAND SPECTRA. II
    Jenny E. Rosenthal and F. A. Jenkins
    PNAS December 15, 1929 15 (12) 896-902; https://doi.org/10.1073/pnas.15.12.896

Mathematics

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    ON GROUPS DEFINED BY Aq = 1, B-1 AB = Ax, BQ = Ae
    Marie J. Weiss
    PNAS December 15, 1929 15 (12) 903-905; https://doi.org/10.1073/pnas.15.12.903
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    ON THE EXISTENCE OF INTEGRALS OF EINSTEIN'S GRAVITATIONAL EQUATIONS FOR FREE SPACE AND THEIR EXTENSION TO n VARIABLES
    Tracy Yerkes Thomas
    PNAS December 15, 1929 15 (12) 906-913; https://doi.org/10.1073/pnas.15.12.906
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