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Volume 14(5);  May 1928
The cover of the journal
Astronomy
On the Contours of Stellar Absorption Lines, and the Composition of Stellar Atmospheres
Cecilia H. Payne
Proc Natl Acad Sci U S A. 1928 May; 14(5): 399–406.
PMCID: PMC1085529
Genetics
Is Pituitary Secretion Concerned in the Inheritance of Body-Size?
R. Cumming Robb
Proc Natl Acad Sci U S A. 1928 May; 14(5): 394–399.
PMCID: PMC1085528
Geology
Regional Isostatic Reduction of Gravity Determinations
George R. Putnam
Proc Natl Acad Sci U S A. 1928 May; 14(5): 407–418.
PMCID: PMC1085530
Proof of Isostasy by a Simple Gravity Reduction Method
George R. Putnam
Proc Natl Acad Sci U S A. 1928 May; 14(5): 418–427.
PMCID: PMC1085531
Mathematics
Singular Points of Vector Fields under General Boundary Conditions
Marston Morse
Proc Natl Acad Sci U S A. 1928 May; 14(5): 428–430.
PMCID: PMC1085532
Remark on the Number of Classes of Binary Quadratic Forms of a Given Negative Determinant
E. T. Bell
Proc Natl Acad Sci U S A. 1928 May; 14(5): 430–431.
PMCID: PMC1085533
Concerning Certain Types of Non-Cut Points, with an Application to Continuous Curves
Harry Merrill Gehman
Proc Natl Acad Sci U S A. 1928 May; 14(5): 431–433.
PMCID: PMC1085534
Concerning Irreducible Continua
Harry Merrill Gehman
Proc Natl Acad Sci U S A. 1928 May; 14(5): 433–435.
PMCID: PMC1085535
Criteria for the Simplification of Algebraic Plane Curves
Julian Coolidge
Proc Natl Acad Sci U S A. 1928 May; 14(5): 435–438.
PMCID: PMC1085536
Physics
On the Quantum Theory of the Autoelectric Field Currents
J. R. Oppenheimer
Proc Natl Acad Sci U S A. 1928 May; 14(5): 363–365.
PMCID: PMC1085522
The Fermi Statistical Postulate; Examination of the Evidence in Its Favor
Edwin H. Hall
Proc Natl Acad Sci U S A. 1928 May; 14(5): 366–370.
PMCID: PMC1085523
Sommerfeld's Electron-Theory of Metals
Edwin H. Hall
Proc Natl Acad Sci U S A. 1928 May; 14(5): 370–377.
PMCID: PMC1085524
Electron “Free Path” and Supra-Conductivity in Metals
Edwin H. Hall
Proc Natl Acad Sci U S A. 1928 May; 14(5): 377–380.
PMCID: PMC1085525
Dispersion of Long Wave-Length X-Rays in Platinum and Calcite
Elmer Dershem
Proc Natl Acad Sci U S A. 1928 May; 14(5): 380–384.
PMCID: PMC1085526
Mobilities of Gaseous Ions in SO2 and SO2-H2 Mixtures
L. DuSault and Leonard B. Loeb
Proc Natl Acad Sci U S A. 1928 May; 14(5): 384–393.
PMCID: PMC1085527
Journal Matter
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