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Volume 9(5);  May 1923
The cover of the journal
Genetics
Crossing-Over and the Theory That the Genes Are Arranged in the Chromosomes in Serial Order
H. S. Jennings
Proc Natl Acad Sci U S A. 1923 May; 9(5): 141–147.
PMCID: PMC1085310
Some Consequences of Different Extents of Interference, in the Crossing-Over of the Genes
H. S. Jennings
Proc Natl Acad Sci U S A. 1923 May; 9(5): 147–149.
PMCID: PMC1085311
Genetic Variation in Linkage Values
J. A. Detlefsen and L. S. Clemente
Proc Natl Acad Sci U S A. 1923 May; 9(5): 149–156.
PMCID: PMC1085312
Mathematics
On Riemann Spaces Conformal to Einstein Spaces
H. W. Brinkmann
Proc Natl Acad Sci U S A. 1923 May; 9(5): 172–174.
PMCID: PMC1085318
Physics
The Displacements of the Capillary Electrometer, for Progressive Dilutions of the Electrolyte
Carl Barus
Proc Natl Acad Sci U S A. 1923 May; 9(5): 156–158.
PMCID: PMC1085313
The Transfer in Quanta of Radiation Momentum to Matter
William Duane
Proc Natl Acad Sci U S A. 1923 May; 9(5): 158–164.
PMCID: PMC1085314
Mutual Electromagnetic Momentum and Energy of a System of Moving Charges
Irwin Roman
Proc Natl Acad Sci U S A. 1923 May; 9(5): 165–166.
PMCID: PMC1085315
Further Experiments on the Mass of the Electric Carrier in Metals
Richard C. Tolman, Sebastian Karrer, and Ernest W. Guernsey
Proc Natl Acad Sci U S A. 1923 May; 9(5): 166–169.
PMCID: PMC1085316
Zoölogy
Removal of the Block to Self-Fertilization in the Ascidian Ciona
T. H. Morgan
Proc Natl Acad Sci U S A. 1923 May; 9(5): 170–171.
PMCID: PMC1085317
Journal Matter
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