This journal provides immediate access to some articles. Volume 14(6); June 1928 Anthropology Family Traits as Determined by Heredity and Environment PMCID: PMC1085566 Astronomy On the Absolute Magnitudes of the Class M Stars PMCID: PMC1085564 On the Constancy of the Light of Red Stars, with Forty New Variables of This Class PMCID: PMC1085565 Chemistry The Adsorption Kinetics for Molecules Attached at More than One Point PMCID: PMC1085559 Characteristic of Homogeneous, Exothermic Gas Reactions PMCID: PMC1085560 Genetics On the Mechanism of Chromosome Behavior in Male and Female Drosophila PMCID: PMC1085561 Mathematics Radiation and Relativity: I PMCID: PMC1085563 Physics The Photo-Electric and Thermionic Properties of Iron PMCID: PMC1085553 Evidence for the Continuous Creation of the Common Elements Out of Positive and Negative Electrons PMCID: PMC1085554 The General X-Radiation from Mercury Vapor PMCID: PMC1085555 On the Quantity of Electricity Discharged in a Lightning Stroke PMCID: PMC1085556 Secondary Electrons from Cobalt PMCID: PMC1085557 Sparks of the Induction Coil between Mucronate Electrodes PMCID: PMC1085558 Physiology Normal and “Rodless” Retinæ of the House Mouse with Respect to the Electromotive Force Generated through Stimulation by Light PMCID: PMC1085562 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||