This journal provides immediate access to some articles. Volume 34(3); March 1948 Biochemistry A Cytochemical Study of the Feulgen Nucleal Reaction PMCID: PMC1062923 Dietary Factors in the Utilization of Homocystine PMCID: PMC1062924 Genetics Linkage Among Genes Controlling Inhibition of Lysis in a Bacterial Virus PMCID: PMC1062925 Mathematics A Theory of Minimax PMCID: PMC1062926 On All of Mersenne's Numbers Particularly M193 PMCID: PMC1062927 New Types of Congruences Involving Bernoulli Numbers and Fermat's Quotient PMCID: PMC1062928 Critical Points of Harmonic Functions as Positions of Equilibrium in a Field of Force PMCID: PMC1062929 Physics Some Properties of Rotational Flow of a Perfect Gas PMCID: PMC1062930 Zoology Reproductive Diapause in Drosophila Robusta PMCID: PMC1062931 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||