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Volume 28(2);  February 1942
The cover of the journal
Botany
Comparative Rates of Division in Large and Small Cells of Developing Fruits
Edmund W. Sinnott
Proc Natl Acad Sci U S A. 1942 February; 28(2): 36–38.
PMCID: PMC1078403
Genetics
Chromosome Degeneration in Relation to Growth and Hybrid Vigor
D. F. Jones
Proc Natl Acad Sci U S A. 1942 February; 28(2): 38–44.
PMCID: PMC1078404
Temperature and “Sex-Ratio” in Drosophila Pseudoöbscura
C. D. Darlington and Th. Dobzhansky
Proc Natl Acad Sci U S A. 1942 February; 28(2): 45–48.
PMCID: PMC1078405
Mathematics
A General Theorem on the Initial Curvature of Dynamical Trajectories
Edward Kasner and Don Mittleman
Proc Natl Acad Sci U S A. 1942 February; 28(2): 48–52.
PMCID: PMC1078406
Generalized Transformation Theory of Isothermal and Dual Families
Edward Kasner and John De Cicco
Proc Natl Acad Sci U S A. 1942 February; 28(2): 52–55.
PMCID: PMC1078407
Concerning Separability
R. L. Moore
Proc Natl Acad Sci U S A. 1942 February; 28(2): 56–58.
PMCID: PMC1078408
The Coefficients of Stirling's Series for Log Γ(x)
Horace S. Uhler
Proc Natl Acad Sci U S A. 1942 February; 28(2): 59–62.
PMCID: PMC1078409
Oscillations of the Derivatives of a Function
A. C. Schaeffer
Proc Natl Acad Sci U S A. 1942 February; 28(2): 62–64.
PMCID: PMC1078410
Zoölogy
Relative Effects of X-Rays and Neutrons on Chromosomes in Different Parts of the “Resting Stage”
Alfred Marshak
Proc Natl Acad Sci U S A. 1942 February; 28(2): 29–35.
PMCID: PMC1078402
Journal Matter
Original table of contents page
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Administrative content — journal masthead, notices, indexes, etc.
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