This journal provides immediate access to some articles. Volume 14(11); November 1928 Astronomy Studies of the Galactic Center: I. The Program for Milky Way Variable Stars PMCID: PMC1085759 Studies of the Galactic Center: II. Preliminary Indication of a Massive Galactic Nucleus PMCID: PMC1085760 The Determination of Absolute-Magnitude Dispersion with Application to Giant M Stars PMCID: PMC1085761 Chemistry New Studies in Polymerization: I. Polymerization of Styrene PMCID: PMC1085763 The Quenching of Cadmium Resonance Radiation PMCID: PMC1085764 The Influence of Food upon Longevity PMCID: PMC1085765 Engineering Gudermannian Complex Angles PMCID: PMC1085762 Mathematics On the Energy of Deformation of an Elastic Solid PMCID: PMC1085776 Physics The Interferometer U-Gauge with Closed Auxiliary Reservoirs PMCID: PMC1085766 Characteristic Differentiation in the Spectra of Saturated Hydrocarbons PMCID: PMC1085767 Are Characteristic X-Rays Polarized? PMCID: PMC1085768 The Origin of the Continuous Spectrum of the Hydrogen Molecule PMCID: PMC1085769 The Critical Potentials of Molecular Hydrogen PMCID: PMC1085770 The Structure of the Compton Shifted Line PMCID: PMC1085771 Some Multiplets of Doubly Ionized Lead PMCID: PMC1085772 Spectral Intensities of Radiation from Non-Harmonic and Aperiodic Systems PMCID: PMC1085773 The Aurora Red Line PMCID: PMC1085774 A Visual Method of Observing the Influence of Atmospheric Conditions on Radio Reception PMCID: PMC1085775 Psychology The Survival of Intelligence PMCID: PMC1085777 Correction A Case of Streaming in a Valve PMCID: PMC1085778 Corrects: A Case of Streaming in a Valve. Proc Natl Acad Sci U S A. 1928 April; 14(4): 301–308. Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||