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Volume 7(8);  August 1921
The cover of the journal
Chemistry
An Apparatus for Determination of the Gases in Blood and Other Solutions
Donald D. Van Slyke
Proc Natl Acad Sci U S A. 1921 August; 7(8): 229–231.
PMCID: PMC1084857
Genetics
Non-Disjunction and the Chromosome Relationships of Drosophila willistoni
Rebecca C. Lancefield and Charles W. Metz
Proc Natl Acad Sci U S A. 1921 August; 7(8): 225–229.
PMCID: PMC1084856
A Case of Rearrangement of Genes in Drosophila
A. H. Sturtevant
Proc Natl Acad Sci U S A. 1921 August; 7(8): 235–237.
PMCID: PMC1084859
Mathematics
Geometric Aspects of the Abelian Modular Functions of Genus Four (I)
Arthur B. Coble
Proc Natl Acad Sci U S A. 1921 August; 7(8): 245–249.
PMCID: PMC1084862
Mineralogy
Melanovanadite, A New Mineral from Mina Ragra, Pasco, Peru
Waldemar Lindgren
Proc Natl Acad Sci U S A. 1921 August; 7(8): 249–251.
PMCID: PMC1084863
Paleontology
Adaptive Radiation and Classification of the Proboscidea
Henry Fairfield Osborn
Proc Natl Acad Sci U S A. 1921 August; 7(8): 231–234.
PMCID: PMC1084858
Physics
A Remeasurement of the Radiation Constant, h, by Means of X-Rays
William Duane, H. H. Palmer, and Chi-Sun Yeh
Proc Natl Acad Sci U S A. 1921 August; 7(8): 237–242.
PMCID: PMC1084860
The U-Tube Absolute Electrometer
Carl Barus
Proc Natl Acad Sci U S A. 1921 August; 7(8): 242–244.
PMCID: PMC1084861
Physiology
Some Physical Characteristics of the Ear
John P. Minton
Proc Natl Acad Sci U S A. 1921 August; 7(8): 221–225.
PMCID: PMC1084855
Journal Matter
Original table of contents page
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Administrative content — journal masthead, notices, indexes, etc.
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