This journal provides immediate access to some articles. Volume 27(2); February 15, 1941 Astronomy Notes on Binary Stars: I. On the Surface Gravity of a Rotationally and Tidally Distorted Star PMCID: PMC1078281 Notes on Binary Stars: II. On the Light of Eclipsing Binaries Out of Eclipse PMCID: PMC1078282 Notes on Binary Stars: III. The Ellipticity Effect in Eccentric Eclipsing Binaries PMCID: PMC1078283 Chemistry Serological Reactions with Simple Substances Containing Two or More Haptenic Groups PMCID: PMC1078287 Genetics Bivalent Structure in the Fly, Melophagus Ovinus L. (Pupipara, Hippoboscidae) PMCID: PMC1078284 Some Effects of the Gene Wv(Dominant Spotting) in Mice PMCID: PMC1078285 Mathematics On Dirichlet's Divisor Plan PMCID: PMC1078289 Uniqueness Theorems for Conformal Mapping of Multiply Connected Domains PMCID: PMC1078290 Pathology and Bacteriology Progressive Immunization PMCID: PMC1078288 Physics Optically Reciprocal Gratings and Their Application to Synthesis of Fourier Series PMCID: PMC1078286 | ||