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Volume 10(4);  April 1924
The cover of the journal
Genetics
Inheritance in Nicotiana Tabacum: V. The Occurrence of Haploid Plants in Interspecific Progenies
Roy E. Clausen and Margaret C. Mann
Proc Natl Acad Sci U S A. 1924 April; 10(4): 121–124.
PMCID: PMC1085570
Mathematics
Electrodynamics in the General Relativity Theory
G. Y. Rainich
Proc Natl Acad Sci U S A. 1924 April; 10(4): 124–127.
PMCID: PMC1085571
Principal Directions in an Affine-Connected Manifold of Two Dimensions
J. L. Synge
Proc Natl Acad Sci U S A. 1924 April; 10(4): 127–129.
PMCID: PMC1085572
Physics
The Quantum Theory of the Fraunhofer Diffraction
P. S. Epstein and P. Ehrenfest
Proc Natl Acad Sci U S A. 1924 April; 10(4): 133–139.
PMCID: PMC1085574
Effective Radii of Gas Molecules
L. L. Nettleton
Proc Natl Acad Sci U S A. 1924 April; 10(4): 140–145.
PMCID: PMC1085575
Note on Absorption Measurements of the X-Rays Reflected from a Calcite Crystal
Y. H. Woo
Proc Natl Acad Sci U S A. 1924 April; 10(4): 145–148.
PMCID: PMC1085576
The Secondary and Tertiary Rays from Chemical Elements of Small Atomic Number Due to Primary X-Rays from a Molybdenum Target
George L. Clark, Wm. Duane, and W. W. Stifler
Proc Natl Acad Sci U S A. 1924 April; 10(4): 148–152.
PMCID: PMC1085577
Density and Diffusion of Gases Measured by Displacement Interferometry
Carl Barus
Proc Natl Acad Sci U S A. 1924 April; 10(4): 153–155.
PMCID: PMC1085578
The Behavior of Low Velocity Electrons in Methane Gas
George Glockler
Proc Natl Acad Sci U S A. 1924 April; 10(4): 155–160.
PMCID: PMC1085579
Statistics
A Statistical Discussion of Sets of Precise Astronomical Measurements: Parallaxes
Edwin B. Wilson and Willem J. Luyten
Proc Natl Acad Sci U S A. 1924 April; 10(4): 129–132.
PMCID: PMC1085573
Journal Matter
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