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Volume 20(1);  January 1934
The cover of the journal
Astronomy
Evolution of the Expanding Universe
G. Lemaitre
Proc Natl Acad Sci U S A. 1934 January; 20(1): 12–17.
PMCID: PMC1076329
Engineering
An Investigation of the Stresses in Longitudinal Welds
William Hovgaard
Proc Natl Acad Sci U S A. 1934 January; 20(1): 17–23.
PMCID: PMC1076330
On the Dynamical Theory of Electrical Commutator Machines
W. H. Ingram
Proc Natl Acad Sci U S A. 1934 January; 20(1): 23–24.
PMCID: PMC1076331
Genetics
Effect of X-Rays on the Rate of Change in the Unstable Miniature-3 Gene of the Drosophila virilis
M. Demerec
Proc Natl Acad Sci U S A. 1934 January; 20(1): 28–31.
PMCID: PMC1076333
Evidence Indicating that in Sciara the Sperm Regularly Transmits Two Sister Sex Chromosomes
C. W. Metz
Proc Natl Acad Sci U S A. 1934 January; 20(1): 31–36.
PMCID: PMC1076334
On the Occurrence of Translocations and Autosomal Non-Disjunction in Drosophila melanogaster
Curt Stern
Proc Natl Acad Sci U S A. 1934 January; 20(1): 36–39.
PMCID: PMC1076335
Unisexual Maize Plants and Their Relation to Dioecism in Other Organisms
Donald F. Jones
Proc Natl Acad Sci U S A. 1934 January; 20(1): 39–41.
PMCID: PMC1076336
Mathematics
Concerning Compact Continua Which Contain No Continuum That Separates the Plane
R. L. Moore
Proc Natl Acad Sci U S A. 1934 January; 20(1): 41–45.
PMCID: PMC1076337
Does Instability Imply Transitivity?
Marston Morse
Proc Natl Acad Sci U S A. 1934 January; 20(1): 46–50.
PMCID: PMC1076338
On Distribution Functions and Their Laplace-Fourier Transforms
E. K. Haviland
Proc Natl Acad Sci U S A. 1934 January; 20(1): 50–57.
PMCID: PMC1076339
On the Asymptotic Formulae of Riemann and of Laplace
Aurel Wintner
Proc Natl Acad Sci U S A. 1934 January; 20(1): 57–62.
PMCID: PMC1076340
Functions Orthogonal in the Hermitian Sense. A New Application of Basic Numbers
H. Bateman
Proc Natl Acad Sci U S A. 1934 January; 20(1): 63–66.
PMCID: PMC1076341
Pathology and Bacteriology
Active and Passive Immunization in Typhus Fever
Hans Zinsser and M. Ruiz Castaneda
Proc Natl Acad Sci U S A. 1934 January; 20(1): 9–11.
PMCID: PMC1076328
Physics
The Expansion of the Universe and the Intensity of Cosmic Rays
Paul S. Epstein
Proc Natl Acad Sci U S A. 1934 January; 20(1): 67–78.
PMCID: PMC1076342
Scientific Work in the “Century of Progress” Stratosphere Balloon
Arthur H. Compton
Proc Natl Acad Sci U S A. 1934 January; 20(1): 79–81.
PMCID: PMC1076343
Analysis of Non-Commuting Vectors with Application to Quantum Mechanics and Vector Calculus
G. H. Shortley and G. E. Kimball
Proc Natl Acad Sci U S A. 1934 January; 20(1): 82–84.
PMCID: PMC1076344
Projective Differentiation in Spinors
Oswald Veblen and A. H. Taub
Proc Natl Acad Sci U S A. 1934 January; 20(1): 85–92.
PMCID: PMC1076345
Physiology and Biochemistry
The Nature of the Depressor Substance of the Blood
Cyrus H. Fiske
Proc Natl Acad Sci U S A. 1934 January; 20(1): 25–27.
PMCID: PMC1076332
Zoölogy and Anatomy
Polyisomerism and Anisomerism in Cranial and Dental Evolution among Vertebrates
William K. Gregory
Proc Natl Acad Sci U S A. 1934 January; 20(1): 1–9.
PMCID: PMC1076327
Journal Matter
Original table of contents page
Administrative content — journal masthead, notices, indexes, etc.
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