This journal provides immediate access to some articles. Volume 3(3); March 1917 Anthropology Archaeology of Mammoth Cave and Vicinity: A Preliminary Report PMCID: PMC1091207 Astronomy The Ninth Satellite of Jupiter PMCID: PMC1091197 Photographic Magnitudes of Stars in the Selected Areas of Kapteyn PMCID: PMC1091206 Preliminary Note on the Distribution of Stars With Respect to the Galactic Plane PMCID: PMC1091215 Botany Studies of the Genus Phytophthora PMCID: PMC1091200 Genetics The Use of Vasectomized Male Mice as Indicators PMCID: PMC1091205 Geology The Gravimetric Survey of the United States PMCID: PMC1091202 Petrified Coals and Their Bearing on the Problem of the Origin of Coals PMCID: PMC1091213 Mathematics The Complete Enumeration of Triad Systems in 15 Elements PMCID: PMC1091209 National Research Council Research Committees in Educational Institutions PMCID: PMC1091217 Central Committee on Research PMCID: PMC1091218 Reports of Meetings of the Executive Committee PMCID: PMC1091219 Pathology The Production in Dogs of a Pathological Condition Which Closely Resembles Human Pellagra PMCID: PMC1091208 Physics The Condensation and Evaporation of Gas Molecules PMCID: PMC1091196 A Possible Function of the Ions in the Electric Conductivity of Metals PMCID: PMC1091201 The Magnetization of Iron, Nickel, and Cobalt by Rotation and the Nature of the Magnetic Molecule PMCID: PMC1091203 The Intensities of X-Rays of the L Series PMCID: PMC1091204 New Data on the Phosphorescence of Certain Sulphides: (Discussing Measurements by Drs. H. E. Howe, H. L. Howes and Percy Hodge) PMCID: PMC1091210 Zoology Aortic Cell Clusters in Vertebrate Embryos PMCID: PMC1091198 Rheotropism of Epinephelus Striatus Bloch PMCID: PMC1091199 The Reactions of the Melanophores of the Horned Toad PMCID: PMC1091211 The Coördination of the Melanophore Reactions of the Horned Toad PMCID: PMC1091212 The Effect of Degree of Injury, Level of Cut and Time Within the Regenerative Cycle Upon the Rate of Regeneration PMCID: PMC1091214 Correction Inferences Concerning Auroras PMCID: PMC1091216 Corrects: Inferences Concerning Auroras. Proc Natl Acad Sci U S A. 1917 January; 3(1): 1–7. Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||