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Volume 3(2);  February 1917
The cover of the journal
Astronomy
Axes of Symmetry in Globular Clusters
Francis G. Pease and Harlow Shapley
Proc Natl Acad Sci U S A. 1917 February; 3(2): 96–101.
PMCID: PMC1091184
The Parallax of the Planetary Nebulae N. G. C. 7662
Adriaan van Maanen
Proc Natl Acad Sci U S A. 1917 February; 3(2): 133–136.
PMCID: PMC1091191
Biology
Temperature Optima for Human Energy
Ellsworth Huntington
Proc Natl Acad Sci U S A. 1917 February; 3(2): 127–133.
PMCID: PMC1091190
Geology
Atlantis and the Permanency of the North Atlantic Ocean Bottom
Charles Schuchert
Proc Natl Acad Sci U S A. 1917 February; 3(2): 65–72.
PMCID: PMC1091177
Mathematics
Natural and Isogonal Families of Curves on a Surface
Joseph Lipka
Proc Natl Acad Sci U S A. 1917 February; 3(2): 78–83.
PMCID: PMC1091180
Some Problems of Diophantine Approximation: The Series Σ e (λn) and the Distribution of the Points (λn α)
G. H. Hardy and J. E. Littlewood
Proc Natl Acad Sci U S A. 1917 February; 3(2): 84–88.
PMCID: PMC1091181
A Note on the Fitting of Parabolas
John Rice Miner
Proc Natl Acad Sci U S A. 1917 February; 3(2): 91–95.
PMCID: PMC1091183
Petrology
A Contribution to the Petrography of the Island of Bawéan, Netherlands Indies
J. P. Iddings and E. W. Morley
Proc Natl Acad Sci U S A. 1917 February; 3(2): 105–109.
PMCID: PMC1091186
Physics
On Moseley's Law for X-Ray Spectra
Horace Scudder Uhler
Proc Natl Acad Sci U S A. 1917 February; 3(2): 88–90.
PMCID: PMC1091182
Refractivity Determined Irrespective of Form, by Displacement Interferometry
Carl Barus
Proc Natl Acad Sci U S A. 1917 February; 3(2): 117–122.
PMCID: PMC1091188
Zoology
The Responses of Hydroids to Gravity
G. H. Parker
Proc Natl Acad Sci U S A. 1917 February; 3(2): 72–73.
PMCID: PMC1091178
The Lips and the Nasal Apertures in the Gnathostome Fishes, and Their Homologues in the Higher Vertebrates
Edward Phelps Allis, Jr.
Proc Natl Acad Sci U S A. 1917 February; 3(2): 73–78.
PMCID: PMC1091179
The Share of Egg and Sperm in Heredity
Edwin G. Conklin
Proc Natl Acad Sci U S A. 1917 February; 3(2): 101–105.
PMCID: PMC1091185
The Phylogenetic Development of Subapterous and Apterous Castes in the Formicidae
William Morton Wheeler
Proc Natl Acad Sci U S A. 1917 February; 3(2): 109–117.
PMCID: PMC1091187
The Food of Drosophila Melanogaster Meigen
J. P. Baumberger
Proc Natl Acad Sci U S A. 1917 February; 3(2): 122–126.
PMCID: PMC1091189
Adult Hymenopterous Parasites Attached to the Body of Their Host
T. Brues
Proc Natl Acad Sci U S A. 1917 February; 3(2): 136–140.
PMCID: PMC1091192
Journal Matter
Original table of contents page
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