This journal provides immediate access to some articles. Volume 35(5); May 1949 Chemistry The Preparation of Specific Adsorbents PMCID: PMC1063007 The Valence-State Energy of the Bivalent Oxygen Atom PMCID: PMC1063008 Genetics Acquisition of the J Substance by the Bovine Erythrocyte PMCID: PMC1063009 Further Studies on the Effect of Infra-Red Radiation on X-Ray-Induced Chromatid Aberrations in Tradescantia PMCID: PMC1063010 Mathematics The Last Entry in Gauss's Diary PMCID: PMC1063011 On the Theorem of Jentzsch PMCID: PMC1063012 On Deviations between Theoretical and Empirical Distributions PMCID: PMC1063013 Psychology On Interposition as a Cue for the Perception of Distance PMCID: PMC1063014 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||