This journal provides immediate access to some articles. Volume 27(12); December 15, 1941 Anthropology and Psychology Patterns of Growth in Human Intelligence PMCID: PMC1078380 Botany The Concept of Ecospecies in Tertiary Paleobotany PMCID: PMC1078379 Chemistry Radioactive Carbon as an Indicator of Carbon Dioxide Utilization: VII. The Assimilation of Carbon Dioxide by Molds PMCID: PMC1078389 Genetics Intersexes in Drosophila Pseudoöbscura PMCID: PMC1078381 The Origin of Jerker, a New Gene Mutation of the House Mouse, and Linkage Studies Made with It PMCID: PMC1078382 Genic Effects on Serum Proteins PMCID: PMC1078383 Mathematics Concerning the Differential Equations of Some Boundary Layer Problems PMCID: PMC1078386 The Generation of Inseparable Fields PMCID: PMC1078387 Maximal Invariant Proper Subgroups of a Finite Group PMCID: PMC1078388 Physics On the Motion of Vortices in Two Dimensions: I. Existence of the Kirchhoff-Routh Function PMCID: PMC1078384 On the Motion of Vortices in Two Dimensions: II. Some Further Investigations on the Kirchhoff-Routh Function PMCID: PMC1078385 Journal Matter Administrative content — journal masthead, notices, indexes, etc. | ||