This journal provides immediate access to some articles. Volume 26(3); March 15, 1940 Astronomy Galactic and Extragalactic Studies: VI. Summary of a Photometric Survey of 35,000 Galaxies in High Southern Latitudes PMCID: PMC1078027 Chemistry Studies in Calcium Metabolism with the Aid of Its Induced Radioactive Isotope: I PMCID: PMC1078028 Mathematics A Decomposition of Compact Continua and Related Theorems on Fixed Sets under Continuous Transformations PMCID: PMC1078030 Minimal Surfaces Spanning Closed Manifolds PMCID: PMC1078031 On Cauchy's Integral Theorem and on the Law of the Mean for Non-Derivable Functions PMCID: PMC1078032 Recalculation and Extension of the Modulus and of the Logarithms of 2, 3, 5, 7 and 17 PMCID: PMC1078033 The Green's Function for a Differential System of Infinite Order PMCID: PMC1078034 Theorems in the Inverse Problem in the Calculus of Variations PMCID: PMC1078035 Pathology and Bacteriology Some Biological Effects of Nuclear Disintegration Products on Neoplastic Tissue PMCID: PMC1078029 Physiology and Biochemistry Further Studies on the Parthenogenetic Activation of Rabbit Eggs PMCID: PMC1078026 Zoölogy and Anatomy The Experimental Production of Melanin Pigment on the Lower Surface of Summer Flounders (Paralichthys Dentatus) PMCID: PMC1078024 A Respiratory Pigment from the Eggs of a Marine Worm PMCID: PMC1078025 | ||