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Volume 37(7);  July 1951
The cover of the journal
Astronomy
On the Evolution of the Protoplanets
Gerard P. Kuiper
Proc Natl Acad Sci U S A. 1951 July; 37(7): 383–393.
PMCID: PMC1063382
Biochemistry
The Chloride Transport System of the Gastric Mucosa
C. Adrian M. Hogben
Proc Natl Acad Sci U S A. 1951 July; 37(7): 393–395.
PMCID: PMC1063383
A New Ribose Nucleoside from Neurospora: “Orotidine”
A. Michael Michelson, William Drell, and Herschel K. Mitchell
Proc Natl Acad Sci U S A. 1951 July; 37(7): 396–399.
PMCID: PMC1063384
Botany
The Isolation and Culture of Gymnosporangium Juniperi-Virgininae Schw. Upon Artificial Media
Hugh H. Hotson and Victor M. Cutter, Jr.
Proc Natl Acad Sci U S A. 1951 July; 37(7): 400–403.
PMCID: PMC1063385
Genetics
The Seration of Fourth Chromosome Loci in Drosophila Melanogaster
Sui Tong Fung and Curt Stern
Proc Natl Acad Sci U S A. 1951 July; 37(7): 403–404.
PMCID: PMC1063386
A Map of the Fourth Chromosome of Drosophila Melanogaster, Based on Crossing Over in Triploid Females
A. H. Sturtevant
Proc Natl Acad Sci U S A. 1951 July; 37(7): 405–407.
PMCID: PMC1063387
The Cytoplasmic Separation of Species
Donald F. Jones
Proc Natl Acad Sci U S A. 1951 July; 37(7): 408–410.
PMCID: PMC1063388
Mathematics
Effective Conformal Transformation of Smooth, Simply Connected Domains
G. Birkhoff, D. M. Young, and E. H. Zarantonello
Proc Natl Acad Sci U S A. 1951 July; 37(7): 411–414.
PMCID: PMC1063389
Partial Sums of Fourier Series
R. P. Boas, Jr.
Proc Natl Acad Sci U S A. 1951 July; 37(7): 414–417.
PMCID: PMC1063390
The Mathematics of Second Quantization
J. M. Cook
Proc Natl Acad Sci U S A. 1951 July; 37(7): 417–420.
PMCID: PMC1063391
On a Conjecture of Murray and von Neumann
Bent Fuglede and Richard V. Kadison
Proc Natl Acad Sci U S A. 1951 July; 37(7): 420–425.
PMCID: PMC1063392
On Determinants and a Property of the Trace in Finite Factors
Bent Fuglede and Richard V. Kadison
Proc Natl Acad Sci U S A. 1951 July; 37(7): 425–431.
PMCID: PMC1063393
A Generalization of the Frobenius Reciprocity Theorem
F. I. Mautner
Proc Natl Acad Sci U S A. 1951 July; 37(7): 431–435.
PMCID: PMC1063394
Heat Conduction on Riemannian Manifolds: II: Heat Distribution on Complexes and Approximation Theory
A. N. Milgram and P. C. Rosenbloom
Proc Natl Acad Sci U S A. 1951 July; 37(7): 435–438.
PMCID: PMC1063395
A Generalization of Hermite's Law of Reciprocity
Francis D. Murnaghan
Proc Natl Acad Sci U S A. 1951 July; 37(7): 439–441.
PMCID: PMC1063396
The Dimensions of the Irreducible Representations of a Finite Group
Francis D. Murnaghan
Proc Natl Acad Sci U S A. 1951 July; 37(7): 441–442.
PMCID: PMC1063397
Approximations Exceeding 1300 Decimals for √3, 1/√3, Sin (π/3) and Distribution of Digits in Them
Horace S. Uhler
Proc Natl Acad Sci U S A. 1951 July; 37(7): 443–447.
PMCID: PMC1063398
Pathology
The Relation of Adrenal Hormones to the Pathogenesis of Experimental Nephritis
Richard W. Lippman and Helen U. Marti
Proc Natl Acad Sci U S A. 1951 July; 37(7): 447–451.
PMCID: PMC1063399
Physics
On the Green's Functions of Quantized Fields: I
Julian Schwinger
Proc Natl Acad Sci U S A. 1951 July; 37(7): 452–455.
PMCID: PMC1063400
On the Green's Functions of Quantized Fields: II
Julian Schwinger
Proc Natl Acad Sci U S A. 1951 July; 37(7): 455–459.
PMCID: PMC1063401
Zoology
Distribution of Mass in Salivary Gland Chromosomes
A. Engström and F. Ruch
Proc Natl Acad Sci U S A. 1951 July; 37(7): 459–461.
PMCID: PMC1063402
Correction
The Jacobson Radical of a Semiring
Proc Natl Acad Sci U S A. 1951 July; 37(7): 462.
PMCID: PMC1063403
Corrects: Samuel Bourne. The Jacobson Radical of a Semiring. Proc Natl Acad Sci U S A. 1951 March; 37(3): 163–170.
Journal Matter
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