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Volume 10(9);  September 1924
The cover of the journal
Astronomy
Note on the Pressure and Currents in the Sun's Atmosphere
Charles E. St. John and Harold D. Babcock
Proc Natl Acad Sci U S A. 1924 September; 10(9): 389–391.
PMCID: PMC1085730
Convection Currents in Stellar Atmospheres
Charles E. St. John and Walter S. Adams
Proc Natl Acad Sci U S A. 1924 September; 10(9): 392–394.
PMCID: PMC1085731
Chemistry
The Ionization Potentials of Hydrogen as Interpreted by Positive Ray Analysis
T. R. Hogness and E. G. Lunn
Proc Natl Acad Sci U S A. 1924 September; 10(9): 398–405.
PMCID: PMC1085733
The Combination of Hydrogen and Oxygen in the Presence of Activated Mercury
Roscoe G. Dickinson
Proc Natl Acad Sci U S A. 1924 September; 10(9): 409–410.
PMCID: PMC1085735
Physics
The Derivation of Electromagnetic Fields from a Basic Wave-Function
H. Bateman and P. Ehrenfest
Proc Natl Acad Sci U S A. 1924 September; 10(9): 369–374.
PMCID: PMC1085725
The Influence on Secondary X-Ray Spectra of Placing the Tube and Radiator in a Box
Alice H. Armstrong, William Duane, and W. W. Stifler
Proc Natl Acad Sci U S A. 1924 September; 10(9): 374–379.
PMCID: PMC1085726
The Influence on Secondary X-Ray Spectra of Placing the Tube and Radiator in a Box
Samuel K. Allison, George L. Clark, and William Duane
Proc Natl Acad Sci U S A. 1924 September; 10(9): 379–384.
PMCID: PMC1085727
Further Experiments on the Refraction of X-Rays in Pyrites
Bergen Davis and Robert von Nardroff
Proc Natl Acad Sci U S A. 1924 September; 10(9): 384–386.
PMCID: PMC1085728
An Improved Method of Measuring the Specific Heats of Metals at High Temperatures
K. K. Smith and L. I. Bockstahler
Proc Natl Acad Sci U S A. 1924 September; 10(9): 386–388.
PMCID: PMC1085729
The Polarization Angle X-Rays Scattered by Paraffin
G. E. M. Jauncey and H. E. Stauss
Proc Natl Acad Sci U S A. 1924 September; 10(9): 405–408.
PMCID: PMC1085734
Statistics
A Statistical Discussion of Sets of Precise Astronomical Measurements: III; Masses of the Stars
Edwin B. Wilson and Willem J. Luyten
Proc Natl Acad Sci U S A. 1924 September; 10(9): 394–398.
PMCID: PMC1085732
Journal Matter
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