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Volume 27(8);  August 15, 1941
Astronomy
The Form of Gaseous Configurations Rotating with Non-Uniform Angular Velocity
Zdeněk Kopal
Proc Natl Acad Sci U S A. 1941 August 15; 27(8): 359–365.
PMCID: PMC1078340
Remarks on the Pegasus Cluster of Nebulae
J. B. Edson and F. Zwicky
Proc Natl Acad Sci U S A. 1941 August 15; 27(8): 366–369.
PMCID: PMC1078341
Botany
Binghamia, The Alga, versus Binghamia, the Cactus
William Albert Setchell and Elmer Yale Dawson
Proc Natl Acad Sci U S A. 1941 August 15; 27(8): 376–381.
PMCID: PMC1078343
Growth Regulators of Plants and Formative Effects Induced with β-Naphthoxy Compounds
P. W. Zimmerman
Proc Natl Acad Sci U S A. 1941 August 15; 27(8): 381–388.
PMCID: PMC1078344
The Effects of Wounding and Wound Hormones on Root Formation
Carl D. LaRue
Proc Natl Acad Sci U S A. 1941 August 15; 27(8): 388–392.
PMCID: PMC1078345
Genetics
Sterility in Crosses of Geographical Races of Drosophila Micromelanica
A. H. Sturtevant and E. Novitski
Proc Natl Acad Sci U S A. 1941 August 15; 27(8): 392–394.
PMCID: PMC1078346
Linkage Studies of the Rat (Rattus Norvegicus): V
W. E. Castle and Hélen Dean King
Proc Natl Acad Sci U S A. 1941 August 15; 27(8): 394–398.
PMCID: PMC1078347
Mathematics
Maximal Subgroups Whose Orders Are Divisible by Two or Three
G. A. Miller
Proc Natl Acad Sci U S A. 1941 August 15; 27(8): 399–402.
PMCID: PMC1078348
Metric Foundations of Geometry
Garrett Birkhoff
Proc Natl Acad Sci U S A. 1941 August 15; 27(8): 402–406.
PMCID: PMC1078349
Lineal Element Transformations Which Preserve the Isothermal Character
Edward Kasner
Proc Natl Acad Sci U S A. 1941 August 15; 27(8): 406–409.
PMCID: PMC1078350
Lineal Element Transformations Which Preserve the Dual-Isothermal Character
John De Cicco
Proc Natl Acad Sci U S A. 1941 August 15; 27(8): 409–412.
PMCID: PMC1078351
Physics
The Inactivation of Bacteriophages by X-Rays—Influence of the Medium
S. E. Luria and Frank M. Exner
Proc Natl Acad Sci U S A. 1941 August 15; 27(8): 370–375.
PMCID: PMC1078342
Non-Linear Equations of the Electromagnetic Field
Robert E. Street
Proc Natl Acad Sci U S A. 1941 August 15; 27(8): 413–417.
PMCID: PMC1078352
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