This journal provides immediate access to some articles. Volume 2(1); January 1916 Anthropology Brief Notes on Recent Anthropological Explorations Under the Auspices of the Smithsonian Institution and the U. S. National Museum PMCID: PMC1090932 Zuñi Culture Sequences PMCID: PMC1090934 Astronomy A Possible Origin for Some Spiral Nebulae PMCID: PMC1090924 Studies of Magnitudes in Star Clusters: I. On the Absorption of Light in Space PMCID: PMC1090926 Studies of Magnitudes in Star Clusters: II. On the Sequence of Spectral Types in Stellar Evolution PMCID: PMC1090927 Botany The Archegonium and Sporophyte of Treubia Insignis Goebel PMCID: PMC1090931 Genetics The Numerical Results of Diverse Systems of Breeding PMCID: PMC1090935 A Preliminary Report on Further Experiments in Inheritance and Determination of Sex PMCID: PMC1090937 On the Degree of Inbreeding which Exists in American Jersey Cattle PMCID: PMC1090938 Geology Sub-Marine Solution of Limestone in Relation to the Murray-Agassiz Theory of Coral Atolls PMCID: PMC1090930 The Extension of the Montana Phosphate Deposits Northward into Canada PMCID: PMC1090940 Geophysics Concomitant Changes in Terrestrial Magnetism and Solar Radiation PMCID: PMC1090929 Mathematics Upper Limit of the Degree of Transitivity of a Substitution Group PMCID: PMC1090939 Physics Experimental Evidence for the Essential Identity of the Selective and Normal Photo-Electric Effects PMCID: PMC1090928 Physiology A Theory of Nerve-Conduction PMCID: PMC1090933 Soil Chemistry A Peculiar Clay from near the City of Mexico PMCID: PMC1090925 Zoology On the Effects of Feeding Pituitary Body (Anterior Lobe) Substance, and Corpus Luteum Substance to Growing Chicks PMCID: PMC1090936 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||