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Volume 1(2);  February 1915
The cover of the journal
Botany
A Phylogenetic Study of Cycads
Charles J. Chamberlain
Proc Natl Acad Sci U S A. 1915 February; 1(2): 86–90.
PMCID: PMC1090742
Chemistry
Potassium Ammono Argenate, Barate, Calciate, and Sodate
Edward C. Franklin
Proc Natl Acad Sci U S A. 1915 February; 1(2): 65–67.
PMCID: PMC1090736
Metallic Salts of Ammono Acids
Edward C. Franklin
Proc Natl Acad Sci U S A. 1915 February; 1(2): 68–70.
PMCID: PMC1090737
Ammonobasic Iodides of Aluminium
Edward C. Franklin
Proc Natl Acad Sci U S A. 1915 February; 1(2): 70.
PMCID: PMC1090738
A Revision of the Atomic Weight of Lead: The Analysis of Lead Bromide and Chloride
Gregory Paul Baxter, Fred Leslie Grover, and Thorbergur Thorvaldson
Proc Natl Acad Sci U S A. 1915 February; 1(2): 71–77.
PMCID: PMC1090739
A Revision of the Atomic Weight of Praseodymium
Gregory Paul Baxter and Olus Jesse Stewart
Proc Natl Acad Sci U S A. 1915 February; 1(2): 77–80.
PMCID: PMC1090740
Genetics
An Interpretation of Self-Sterility
E. M. East
Proc Natl Acad Sci U S A. 1915 February; 1(2): 95–100.
PMCID: PMC1090744
The Feebly Inhibited: II. Nomadism or the Wandering Impulse with Special Reference to Heredity
C. B. Davenport
Proc Natl Acad Sci U S A. 1915 February; 1(2): 120–122.
PMCID: PMC1090752
Geophysics
On the Earth Considered as a Heat Engine
George F. Becker
Proc Natl Acad Sci U S A. 1915 February; 1(2): 81–86.
PMCID: PMC1090741
Mathematics
Conjugate Systems of Space Curves with Equal Laplace-Darboux Invariants
E. J. Wilczynski
Proc Natl Acad Sci U S A. 1915 February; 1(2): 59–61.
PMCID: PMC1090734
Transformation of Surfaces
L. P. Eisenhart
Proc Natl Acad Sci U S A. 1915 February; 1(2): 62–65.
PMCID: PMC1090735
Physiology
The Basal Caloric Output of Vegetarians as Compared with that of Non-Vegetarians of Like Weight and Height
Francis G. Benedict and Paul Roth
Proc Natl Acad Sci U S A. 1915 February; 1(2): 100–101.
PMCID: PMC1090745
The Influence of Athletic Training Upon Basal Metabolism
Francis G. Benedict and H. Monmouth Smith
Proc Natl Acad Sci U S A. 1915 February; 1(2): 102–103.
PMCID: PMC1090746
A Comparison of the Basal Metabolism of Normal Men and Women
Francis G. Benedict and L. E. Emmes
Proc Natl Acad Sci U S A. 1915 February; 1(2): 104–105.
PMCID: PMC1090747
The Factors Affecting Normal Basal Metabolism
Francis G. Benedict
Proc Natl Acad Sci U S A. 1915 February; 1(2): 105–109.
PMCID: PMC1090748
On the Nature of the Nerve Impulse
Shiro Tashiro
Proc Natl Acad Sci U S A. 1915 February; 1(2): 110–114.
PMCID: PMC1090749
Psychology
A Point Scale for Measuring Mental Ability
Robert M. Yerkes
Proc Natl Acad Sci U S A. 1915 February; 1(2): 114–117.
PMCID: PMC1090750
Color Vision in the Ring-Dove (Tutur risorius)
Robert M. Yerkes
Proc Natl Acad Sci U S A. 1915 February; 1(2): 117–119.
PMCID: PMC1090751
Zoology
Dimorphism in Size of Spermatozoa and its Relation to the Chromosomes
Charles Zeleny and E. C. Faust
Proc Natl Acad Sci U S A. 1915 February; 1(2): 91–94.
PMCID: PMC1090743
Journal Matter
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