This journal provides immediate access to some articles. Volume 29(1); January 1943 Genetics Chromosome Ends in Datura Pruinosa PMCID: PMC1078544 A Complex Induced Rearrangement of Drosophila Chromosomes and Its Bearing on the Problem of Chromosome Recombination PMCID: PMC1078545 Mechanism of Induction of Gross Chromosomal Rearrangements in Drosophila Sperms PMCID: PMC1078546 The Effect of Centrifuging Upon the Production of X-Ray Induced Chromosomal Aberrations PMCID: PMC1078547 Increase in Mammary Carcinoma Incidence Following Inoculations of Whole Blood PMCID: PMC1078548 Mathematics Determination of the Subgroups of Small Index PMCID: PMC1078549 Existence of Periodic Solutions for Certain Differential Equations PMCID: PMC1078550 On the Euclidean Connections in a Finsler Space PMCID: PMC1078551 A Generalization of the Projective Geometry of Linear Spaces PMCID: PMC1078552 Pathology The Epidemic Curve: II PMCID: PMC1078553 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||