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This journal provides immediate access to some articles. Volume 16(4); April 15, 1930 Astronomy THE VELOCITIES OF B-TYPE STARS PMCID: PMC526628 Chemistry THE INFLUENCE ON THE IDEAL SOLUTION LAWS OF THE DISTRIBUTION OF POLARITY WITHIN THE MOLECULE PMCID: PMC526631 PENTAVALENT NITROGEN IN ORGANIC COMPOUNDS PMCID: PMC526632 THE TAUTOMERIC FORM OF MALIC ACID PMCID: PMC526633 Genetics GENETICAL AND CYTOLOGICAL STUDIES OF SEMISTERILITY AND RELATED PHENOMENA IN MAIZE PMCID: PMC526629 EVIDENCE THAT NATURAL RADIOACTIVITY IS INADEQUATE TO EXPLAIN THE FREQUENCY OF “NATURAL” MUTATIONS PMCID: PMC526630 Mathematics ON THE OVERCONVERGENCE OF SEQUENCES OF POLYNOMIALS OF BEST APPROXIMATION PMCID: PMC526634 SUMMARY OF RESULTS AND PROOFS ON FERMAT'S LAST THEOREM: (Fifth Paper) PMCID: PMC526635 GROUPS GENERATED BY TWO GIVEN GROUPS PMCID: PMC526636 ON THE STRUCTURE OF PURE RIEMANN MATRICES WITH NON-COMMUTATIVE MULTIPLICATION ALGEBRAS PMCID: PMC526637 ON DIRECT PRODUCTS, CYCLIC DIVISION ALGEBRAS, AND PURE RIEMANN MATRICES PMCID: PMC526638 Physics THE NEAR INFRA-RED ABSORPTION SPECTRUM OF CALCITE PMCID: PMC526639 THE EFFECT OF THE ANNIHILATION OF MATTER ON THE WAVE-LENGTH OF LIGHT FROM THE NEBULAE PMCID: PMC526640 Journal Matter Administrative content — journal masthead, notices, indexes, etc. | ||