This journal provides immediate access to some articles. Volume 22(7); July 1936 Astronomy On the Periodic Analytic Continuations of the Circular Orbits in the Restricted Problem of Three Bodies PMCID: PMC1076801 Chemistry On the Structure of Native, Denatured, and Coagulated Proteins PMCID: PMC1076802 Genetics Inversions in the Third Chromosome of Wild Races of Drosophila Pseudoobscura, and Their Use in the Study of the History of the Species PMCID: PMC1076803 The Effect of Temperature on the Frequency of Somatic Crossing-Over in Drosophila Melanogaster PMCID: PMC1076804 Physics and Engineering An Expansion-Luminosity Relation for Novae PMCID: PMC1076806 Zoölogy and Anatomy Studies in Reptilian Color Change: I. A Preliminary Report PMCID: PMC1076805 Journal Matter Administrative content — journal masthead, notices, indexes, etc. | ||