This journal provides immediate access to some articles. Volume 38(2); February 1952 Bacteriology Some Observations on the Error of Bio-Assay PMCID: PMC1063510 Biochemistry Variation in the Amounts of Desoxyribose Nucleic Acid (DNA) in Cells of the Same Tissue and its Correlation with Secretory Function PMCID: PMC1063511 The Production of Indole Acetic Acid by Ustilago Zeae, and Its Possible Significance in Tumor Formation PMCID: PMC1063512 Chemistry The Structure of Chlorine Hydrate PMCID: PMC1063513 Mathematics On the Homomorphism Theorem for Semirings PMCID: PMC1063514 A Note on πr(Vn, m) PMCID: PMC1063515 Fixed-point and Minimax Theorems in Locally Convex Topological Linear Spaces PMCID: PMC1063516 On a Convenient System of Parameters for the Unitary Group PMCID: PMC1063517 On the Modular Representations of the Symmetric Group (II) PMCID: PMC1063518 Potential Theory in Space of n Dimensions (Part I) PMCID: PMC1063521 Psychology The Place Principle in Auditory Theory PMCID: PMC1063519 Zoology The Isolation and Chemical Properties of the Nucleoli of Starfish Oocytes PMCID: PMC1063520 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||