This journal provides immediate access to some articles. Volume 29(5); May 1943 Bacteriology Bio-Assay on a General Curve PMCID: PMC1078571 Botany Mastophora and the Mastophoreae: Genus and Subfamily of Corallinaceae PMCID: PMC1078567 Genetics High Mutation Frequency in Drosophila Pseudoöbscura, Race B PMCID: PMC1078569 On the Physical Basis for Genetic Resistance to Mouse Typhoid, Salmonella Typhimurium PMCID: PMC1078570 Mathematics Relations between Homology and Homotopy Groups PMCID: PMC1078572 A Stress Function for the Membrane Theory of Shells of Revolution PMCID: PMC1078573 Zoölogy The Pedigreed Culture of Paramecium Aurelia at Yale University PMCID: PMC1078568 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||