This journal provides immediate access to some articles. Volume 19(2); February 1933 Astronomy The Newton-Denning Method for Computing Meteor Paths with a Celestial Globe PMCID: PMC1085933 A Study of Meteor Light Curves PMCID: PMC1085934 Absorption and Space Reddening in the Galaxy as Shown by the Colors of Globular Clusters PMCID: PMC1085935 Biology Available Food, Relative Growth and Duration of Life in Seedlings of Cucumis Melo PMCID: PMC1085936 Genetics An X-Ray Induced Chromosomal Translocation in Apotettix eurycephalus Hancock (Grouse Locusts) PMCID: PMC1085937 Geology The Geology of the Beartooth Mountain Front in Park County, Wyoming PMCID: PMC1085938 Mathematics Characters of Abelian Groups PMCID: PMC1085939 Geometry of the Heat Equation: Second Paper. The Three Degenerate Types of Laplace, Poisson and Helmholtz PMCID: PMC1085940 Theory of Elastic Systems Vibrating under Transient Impulse with an Application to Earthquake-Proof Buildings PMCID: PMC1085941 A Jordan Space Curve Which Bounds No Finite Simply Connected Area PMCID: PMC1085942 On Lacunary Power Series PMCID: PMC1085943 A Matrix Knot Invariant PMCID: PMC1085944 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||