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Volume 8(12);  December 1922
The cover of the journal
Mathematics
Projective and Affine Geometry of Paths
O. Veblen
Proc Natl Acad Sci U S A. 1922 December; 8(12): 347–350.
PMCID: PMC1085184
Physics
Characteristics of a Short Wave Oscillator at Very Low Pressures
L. L. Nettleton
Proc Natl Acad Sci U S A. 1922 December; 8(12): 353–357.
PMCID: PMC1085186
The Refraction of X-Rays in Calcite
Bergen Davis and H. M. Terrill
Proc Natl Acad Sci U S A. 1922 December; 8(12): 357–361.
PMCID: PMC1085187
The Compressibility of Metals at High Pressures
P. W. Bridgman
Proc Natl Acad Sci U S A. 1922 December; 8(12): 361–365.
PMCID: PMC1085188
Physiology
A Direct Method of Testing Color Vision in Lower Animals
W. F. Hamilton
Proc Natl Acad Sci U S A. 1922 December; 8(12): 350–353.
PMCID: PMC1085185
Statistics
A Further Note on the Mathematical Theory of Population Growth
Raymond Pearl and Lowell J. Reed
Proc Natl Acad Sci U S A. 1922 December; 8(12): 365–368.
PMCID: PMC1085189
Journal Matter
Original table of contents page
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