This journal provides immediate access to some articles. Volume 32(1); January 1946 Mathematics On Certain Sequences of Functions PMCID: PMC1078862 Intrinsic Area PMCID: PMC1078863 The Mean Convergence of Orthogonal Series of Polynomials PMCID: PMC1078864 The Fundamental Theorem on Quadratic First Integrals PMCID: PMC1078865 Converse Theory of Gnomic and Equiareal Perspectivities PMCID: PMC1078866 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||