This journal provides immediate access to some articles. Volume 30(7); July 15, 1944 Genetics X-Ray Sensitivity Changes in Meiotic Chromosomes PMCID: PMC1078687 Mathematics Scale Curves in Conformal Maps PMCID: PMC1078689 The Span of the Translations of a Function in a Lebesgue Space PMCID: PMC1078690 On the Solution of a General Transform PMCID: PMC1078691 Physics The Spore Discharge Mechanism of Common Ferns PMCID: PMC1078688 | ||