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Volume 20(12);  December 1934
The cover of the journal
Astronomy
The Accuracy of Least Squares Solutions: Part II: The Standard Deviation of the Errors of Linear Equations of Condition
T. E. Sterne
Proc Natl Acad Sci U S A. 1934 December; 20(12): 601–603.
PMCID: PMC1076495
Botany
CHROMOSOME NUMBERS IN CERTAIN RICCIACEAE
Margaret B. Siler
Proc Natl Acad Sci U S A. 1934 December; 20(12): 603–607.
PMCID: PMC1076496
Chemistry
Reversible Coagulation in Living Tissue: XIII
Henry E. Merriam and John E. Rutzler, Jr.
Proc Natl Acad Sci U S A. 1934 December; 20(12): 608–612.
PMCID: PMC1076497
Genetics
Genetics of Hermaphroditism in Drosophila virilis
G. A. Lebedeff
Proc Natl Acad Sci U S A. 1934 December; 20(12): 613–616.
PMCID: PMC1076498
Internal Organization of Salivary Gland Chromosomes of Sciara in Relation to Genes
C. W. Metz and E. H. Gay
Proc Natl Acad Sci U S A. 1934 December; 20(12): 617–621.
PMCID: PMC1076499
Body Size of Reciprocal Hybrids in Rabbit Crosses
W. E. Castle
Proc Natl Acad Sci U S A. 1934 December; 20(12): 621–625.
PMCID: PMC1076500
Geology and Paleontology
A Hypertragulid from the Sespe Uppermost Eocene, California
Chester Stock
Proc Natl Acad Sci U S A. 1934 December; 20(12): 625–629.
PMCID: PMC1076501
Mathematics
The Dissection of Closed Surfaces and the Phragmen-Brouwer-Alexandroff Theorem
B. Kaufmann and H. D. Ursell
Proc Natl Acad Sci U S A. 1934 December; 20(12): 662–666.
PMCID: PMC1076508
The Intersection of Arbitrary Chains and Its Boundary
William W. Flexner and Madeline Levin
Proc Natl Acad Sci U S A. 1934 December; 20(12): 666–668.
PMCID: PMC1076509
The General Case of Linear Integro-Differential Equations
W. J. Trjitzinsky
Proc Natl Acad Sci U S A. 1934 December; 20(12): 668–671.
PMCID: PMC1076510
Conformal Tensor Invariants
John L. Vanderslice
Proc Natl Acad Sci U S A. 1934 December; 20(12): 672–676.
PMCID: PMC1076511
Involutorial Simple Algebras and Real Riemann Matrices
A. Adrian Albert
Proc Natl Acad Sci U S A. 1934 December; 20(12): 676–681.
PMCID: PMC1076512
Physics
Ultra-Violet Transmission Changes in Glass as a Function of the Wave-Length of the Radiation Stimulus
W. W. Coblentz and R. Stair
Proc Natl Acad Sci U S A. 1934 December; 20(12): 630–635.
PMCID: PMC1076502
On the Expansion or Contraction of a Symmetrical Cloud under the Influence of Gravity
J. L. Synge
Proc Natl Acad Sci U S A. 1934 December; 20(12): 635–640.
PMCID: PMC1076503
Physiology and Biochemistry
To What Extent Is Developmental Block Dependent upon the Metabolic Activity of the Embryonic Cell?
Joseph Hall Bodine
Proc Natl Acad Sci U S A. 1934 December; 20(12): 640–644.
PMCID: PMC1076504
A Theoretical Basis for Intensity Discrimination in Vision
Selig Hecht
Proc Natl Acad Sci U S A. 1934 December; 20(12): 644–655.
PMCID: PMC1076505
Zoölogy and Anatomy
The Development of Rat Embryos in Tissue Culture
J. S. Nicholas and Dorothea Rudnick
Proc Natl Acad Sci U S A. 1934 December; 20(12): 656–658.
PMCID: PMC1076506
Eye-Stalk Hormone and the Movement of Distal Retinal Pigment in Palaemonetes
L. H. Kleinholz
Proc Natl Acad Sci U S A. 1934 December; 20(12): 659–661.
PMCID: PMC1076507
Correction
Acetyl Choline and Chromatophores
Proc Natl Acad Sci U S A. 1934 December; 20(12): 681.
PMCID: PMC1076513
Corrects: G. H. Parker. Acetyl Choline and Chromatophores. Proc Natl Acad Sci U S A. 1934 November; 20(11): 596–599.
Journal Matter
Administrative content — journal masthead, notices, indexes, etc.
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