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Volume 4(9);  September 1918
The cover of the journal
Anatomy
A Comparison of Growth Changes in the Nervous System of the Rat with Corresponding Changes in the Nervous System of Man
Henry H. Donaldson
Proc Natl Acad Sci U S A. 1918 September; 4(9): 280–283.
PMCID: PMC1091467
Geology
Metaliferous Laterite in New Caledonia
W. M. Davis
Proc Natl Acad Sci U S A. 1918 September; 4(9): 275–280.
PMCID: PMC1091466
The Importance of Nivation as an Erosive Factor, and of Soil Flow as a Transporting Agency, in Northern Greenland
W. Elmer Ekblaw
Proc Natl Acad Sci U S A. 1918 September; 4(9): 288–293.
PMCID: PMC1091469
Mathematics
On the α-Holomorphisms of a Group
G. A. Miller
Proc Natl Acad Sci U S A. 1918 September; 4(9): 293–294.
PMCID: PMC1091470
Zoölogy
Variation and Heredity During the Vegetative Reproduction of Arcella dentata
R. W. Hegner
Proc Natl Acad Sci U S A. 1918 September; 4(9): 283–288.
PMCID: PMC1091468
Journal Matter
Original table of contents page
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