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Volume 12(9);  September 1926
The cover of the journal
Mathematics
Postulates in the History of Scienec
G. A. Miller
Proc Natl Acad Sci U S A. 1926 September; 12(9): 537–540.
PMCID: PMC1084680
On the Zeros of Functions Associated with a Linear System of the Second Order
H. J. Ettlinger
Proc Natl Acad Sci U S A. 1926 September; 12(9): 540–544.
PMCID: PMC1084681
Concerning Irreducibly Connected Sets and Irreducible Continua
Harry Merrill Gehman
Proc Natl Acad Sci U S A. 1926 September; 12(9): 544–547.
PMCID: PMC1084682
Physics
Interpretation of Deviations from Ohm's Law
Karl T. Compton
Proc Natl Acad Sci U S A. 1926 September; 12(9): 548–551.
PMCID: PMC1084683
Rubidium and Caesium-Like Doublets of Stripped Atoms
R. C. Gibbs and H. E. White
Proc Natl Acad Sci U S A. 1926 September; 12(9): 551–555.
PMCID: PMC1084684
The Fine Structure of Certain Lines and Energy Levels of Cadmium
Walter A. MacNair
Proc Natl Acad Sci U S A. 1926 September; 12(9): 555–556.
PMCID: PMC1084685
On the Spectrum of Argon
F. A. Saunders
Proc Natl Acad Sci U S A. 1926 September; 12(9): 556–560.
PMCID: PMC1084686
Ionization in Reacting Gases
A. Keith Brewer
Proc Natl Acad Sci U S A. 1926 September; 12(9): 560–564.
PMCID: PMC1084687
Zoölogy
Localization of Formative Agencies in Hydra
H. W. Rand, J. F. Bovard, and D. E. Minnich
Proc Natl Acad Sci U S A. 1926 September; 12(9): 565–570.
PMCID: PMC1084688
Inhibition of Regeneration in Two-Headed or Two-Tailed Planarians
Herbert W. Rand and Mildred Ellis
Proc Natl Acad Sci U S A. 1926 September; 12(9): 570–574.
PMCID: PMC1084689
Inhibition of Regeneration in Planarians by Grafting: Technique of Grafting
Herbert W. Rand and Amy Browne
Proc Natl Acad Sci U S A. 1926 September; 12(9): 575–581.
PMCID: PMC1084690
Journal Matter
Original table of contents page
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