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Volume 15(12);  December 15, 1929
Biology
NEW RESULTS FROM THE STUDY OF COELENTERATE NEMATOCYSTS: (Preliminary Note)
Robert F. Weill
Proc Natl Acad Sci U S A. 1929 December 15; 15(12): 887–892.
PMCID: PMC522582
Botany
A PROPOSED PHYLOGENY OF THE ONAGRACEAE BASED PRIMARILY ON NUMBER OF CHROMOSOMES
Donald A. Johansen
Proc Natl Acad Sci U S A. 1929 December 15; 15(12): 882–885.
PMCID: PMC522580
THE CHROMOSOMES OF BUGINVILLAEA
Delmer C. Cooper
Proc Natl Acad Sci U S A. 1929 December 15; 15(12): 885–887.
PMCID: PMC522581
Genetics
UNISEXUAL PROGENIES AND THE SEX CHROMOSOME MECHANISM IN SCIARA
Chas. W. Metz and M. Louise Schmuck
Proc Natl Acad Sci U S A. 1929 December 15; 15(12): 863–866.
PMCID: PMC522576
FURTHER STUDIES ON THE CHROMOSOME MECHANISM RESPONSIBLE FOR UNISEXUAL PROGENIES IN SCIARA. TESTS OF EXCEPTIONAL MALES
Chas. W. Metz and M. Louise Schmuck
Proc Natl Acad Sci U S A. 1929 December 15; 15(12): 867–870.
PMCID: PMC522577
CHANGES IN THE RATE OF MUTABILITY OF THE MUTABLE MINIATURE GENE OF DROSOPHILA VIRILIS
M. Demerec
Proc Natl Acad Sci U S A. 1929 December 15; 15(12): 870–876.
PMCID: PMC522578
CHROMOSOME NUMBER AND THE MUTATION RATE IN AVENA AND TRITICUM
L. J. Stadler
Proc Natl Acad Sci U S A. 1929 December 15; 15(12): 876–881.
PMCID: PMC522579
Mathematics
ON GROUPS DEFINED BY Aq = 1, B-1 AB = Ax, BQ = Ae
Marie J. Weiss
Proc Natl Acad Sci U S A. 1929 December 15; 15(12): 903–905.
PMCID: PMC522585
ON THE EXISTENCE OF INTEGRALS OF EINSTEIN'S GRAVITATIONAL EQUATIONS FOR FREE SPACE AND THEIR EXTENSION TO n VARIABLES
Tracy Yerkes Thomas
Proc Natl Acad Sci U S A. 1929 December 15; 15(12): 906–913.
PMCID: PMC522586
Physics
AN INTERFEROMETER METHOD OF OBSERVING THE VIBRATIONS OF AN OSCILLATING QUARTZ PLATE
Harold Osterberg
Proc Natl Acad Sci U S A. 1929 December 15; 15(12): 892–896.
PMCID: PMC522583
PERTURBATIONS IN BAND SPECTRA. II
Jenny E. Rosenthal and F. A. Jenkins
Proc Natl Acad Sci U S A. 1929 December 15; 15(12): 896–902.
PMCID: PMC522584
Journal Matter
Administrative content — journal masthead, notices, indexes, etc.
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