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Volume 34(12);  December 1948
The cover of the journal
Astronomy
On the Relationships Between the Frequency Functions of Stellar Velocities
Joost H. Kiewiet de Jonge
Proc Natl Acad Sci U S A. 1948 December; 34(12): 553–561.
PMCID: PMC1079168
Biochemistry
Amino Acid Constituents of Tissues and Isolated Chromasomes of Drosophila
Johanna Blumel and Helen Kirby
Proc Natl Acad Sci U S A. 1948 December; 34(12): 561–566.
PMCID: PMC1079169
Studies on the Biochemistry of Tetrahymena: XIV. The Activity of Natural Purines and Pyrimidines
G. W. Kidder and Virginia C. Dewey
Proc Natl Acad Sci U S A. 1948 December; 34(12): 566–574.
PMCID: PMC1079170
Botany
On Leaf Arrangement in Metasequoia Glyptostroboides
Thomas Morley
Proc Natl Acad Sci U S A. 1948 December; 34(12): 574–578.
PMCID: PMC1079171
An Ascent of Koroyanitu
A. C. Smith
Proc Natl Acad Sci U S A. 1948 December; 34(12): 579–585.
PMCID: PMC1079172
Chemistry
Nutritional Life History as Influenced by Dietary Enrichments: III. Full-Life Data of 1946-1948 Experiments
Henry C. Sherman and Constance S. Pearson
Proc Natl Acad Sci U S A. 1948 December; 34(12): 585–587.
PMCID: PMC1079173
Genetics
On the Proteins of a+a+ and aa Ephestia
Ernst Caspari and Josephine Richards
Proc Natl Acad Sci U S A. 1948 December; 34(12): 587–594.
PMCID: PMC1079174
Mathematics
The Rayleigh-Ritz and the Weinstein Methods for Approximation of Eigenvalues: II. Differential Operators
N. Aronszajn
Proc Natl Acad Sci U S A. 1948 December; 34(12): 594–601.
PMCID: PMC1079175
On the Theory of Age-Dependent Stochastic Branching Processes
Richard Bellman and Theodore E. Harris
Proc Natl Acad Sci U S A. 1948 December; 34(12): 601–604.
PMCID: PMC1079176
Conformal Mapping and Convergence of a Power Series
Arne Broman
Proc Natl Acad Sci U S A. 1948 December; 34(12): 605–610.
PMCID: PMC1079177
Essential Multiplicity and Lebesgue Area
Herbert Federer
Proc Natl Acad Sci U S A. 1948 December; 34(12): 611–616.
PMCID: PMC1079178
Some New Results on Partitions
Nathan J. Fine
Proc Natl Acad Sci U S A. 1948 December; 34(12): 616–618.
PMCID: PMC1079179
Journal Matter
Original table of contents page
Administrative content — journal masthead, notices, indexes, etc.
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