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Volume 5(7);  July 1919
The cover of the journal
Astronomy
Evidence of Stream Motion Afforded by the Faint Stars Near the Orion Nebula
Adriaan van Maanen
Proc Natl Acad Sci U S A. 1919 July; 5(7): 225–228.
PMCID: PMC1091579
On the Use of the Spectroscopic Method for Determining the Parallaxes of the Brighter Stars
W. S. Adams and G. Strömberg
Proc Natl Acad Sci U S A. 1919 July; 5(7): 228–232.
PMCID: PMC1091580
Relation of Color to Intrinsic Luminosity in Stars of the Same Spectral Type
Frederick H. Seares
Proc Natl Acad Sci U S A. 1919 July; 5(7): 232–238.
PMCID: PMC1091581
The Motions in Space of Some Stars of High Radial Velocity
W. S. Adams and A. H. Joy
Proc Natl Acad Sci U S A. 1919 July; 5(7): 239–241.
PMCID: PMC1091582
Deviations of the Sun's General Magnetic Field from That of a Uniformly Magnetized Sphere
F. H. Seares, A. van Maanen, and F. Ellerman
Proc Natl Acad Sci U S A. 1919 July; 5(7): 242–246.
PMCID: PMC1091583
Botany
Phenomena of Cell Division in the Cambium of Arborescent Gymnosperms and Their Cytological Significance
Irving W. Bailey
Proc Natl Acad Sci U S A. 1919 July; 5(7): 283–285.
PMCID: PMC1091594
Chemistry
The Structure of Atoms and the Octet Theory of Valence
Irving Langmuir
Proc Natl Acad Sci U S A. 1919 July; 5(7): 252–259.
PMCID: PMC1091587
Mathematics
On the Twist in Conformed Mapping
T. H. Gronwall
Proc Natl Acad Sci U S A. 1919 July; 5(7): 248–250.
PMCID: PMC1091585
Groups Involving Only Two Operators Which are Squares
A. G. Miller
Proc Natl Acad Sci U S A. 1919 July; 5(7): 272–274.
PMCID: PMC1091592
Real Hypersurfaces Contained in Abelian Varieties
S. Lefschetz
Proc Natl Acad Sci U S A. 1919 July; 5(7): 296–298.
PMCID: PMC1091598
National Research Council
Extracts from the Minutes of the Meeting of the Executive Board
Paul Brockett
Proc Natl Acad Sci U S A. 1919 July; 5(7): 299–320.
PMCID: PMC1091599
Paleontology
Seventeen Skeletons of Moropus; Probable Habits of this Animal
Henry Fairfield Osborn
Proc Natl Acad Sci U S A. 1919 July; 5(7): 250–252.
PMCID: PMC1091586
Palæomastodon, The Ancestors of the Long-Jawed Mastodons Only
Henry Fairfield Osborn
Proc Natl Acad Sci U S A. 1919 July; 5(7): 265–266.
PMCID: PMC1091590
Physics
A New Instrument for Measuring Pressures in a Gun
A. G. Webster and L. T. E. Thompson
Proc Natl Acad Sci U S A. 1919 July; 5(7): 259–263.
PMCID: PMC1091588
On the Angle of Repose of Wet Sand
A. G. Webster
Proc Natl Acad Sci U S A. 1919 July; 5(7): 263–265.
PMCID: PMC1091589
The Elongation Due to Magnetization
C. Barus
Proc Natl Acad Sci U S A. 1919 July; 5(7): 267–272.
PMCID: PMC1091591
Acoustical Impedance and the Theory of Horns and of the Phonograph
Arthur Gordon Webster
Proc Natl Acad Sci U S A. 1919 July; 5(7): 275–282.
PMCID: PMC1091593
On the Possible Form of the Equation of State of Powder Gases
A. G. Webster
Proc Natl Acad Sci U S A. 1919 July; 5(7): 286–288.
PMCID: PMC1091595
The Relative Adsorption of Mixtures of Oxygen and Nitrogen in Cocoanut Shell Charcoal
Harvey B. Lemon and Kathryn Blodgett
Proc Natl Acad Sci U S A. 1919 July; 5(7): 289–291.
PMCID: PMC1091596
Variations, Due to Heat Treatment, in the Rate of Adsorption of Air by Cocoanut Shell Charcoal
Harvey B. Lemon
Proc Natl Acad Sci U S A. 1919 July; 5(7): 291–295.
PMCID: PMC1091597
Physiology
On the Problem of the Production of Fat from Protein in the Dog
H. V. Atkinson and Graham Lusk
Proc Natl Acad Sci U S A. 1919 July; 5(7): 246–248.
PMCID: PMC1091584
Journal Matter
Original table of contents page
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