This journal provides immediate access to some articles. Volume 37(4); April 1951 Astronomy Galactic and Extragalactic Studies: XXI. Distribution of 95,000 Galaxies in the North Galactic Cap PMCID: PMC1063334 Curve of Growth Polarization PMCID: PMC1063335 Biochemistry Hormonal Influence on Nuclear Synthesis: I. Estrogen and Uterine Gland Nuclei PMCID: PMC1063336 Chemistry The Structure of Proteins: Two Hydrogen-Bonded Helical Configurations of the Polypeptide Chain PMCID: PMC1063337 Mathematics Concerning Non-Continuable, Transcendentally Transcendental Power Series PMCID: PMC1063338 Simple Waves in the Complete General Problem of Plasticity Theory PMCID: PMC1063339 Continuous Games PMCID: PMC1063340 Theory of Turns and Slides Upon a Surface PMCID: PMC1063341 Probabilistic Geometry PMCID: PMC1063342 Physics Numerical Results for Pressure-Velocity Correlations in Homogeneous Isotropic Turbulence PMCID: PMC1063343 Correction On the Origin of the Solar System PMCID: PMC1063344 Corrects: On the Origin of the Solar System. Proc Natl Acad Sci U S A. 1951 January; 37(1): 1–14. Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||