This journal provides immediate access to some articles. Volume 15(2); February 15, 1929 Genetics CONTROL OF SEX IN CLADOCERA. III. LOCALIZATION OF THE CRITICAL PERIOD FOR CONTROL OF SEX PMCID: PMC522408 GENETIC IDENTIFICATION OF THE SEX CHROMOSOMES IN SCIARA (DIPTERA) PMCID: PMC522409 A SPONTANEOUS MUTATION IN THE HOUSE MOUSE PMCID: PMC522410 Geology and Paleontology LATE GEOLOGIC DEFORMATION OF THE APPALACHIAN PIEDMONT AS DETERMINED BY RIVER GRAVELS PMCID: PMC522424 Mathematics POSSIBLE α-AUTOMORPHISMS OF NON-ABELIAN GROUPS PMCID: PMC522411 ON CONTINUOUS CURVES HAVING CERTAIN PROPERTIES PMCID: PMC522412 ON SIMPLE CLOSED CURVES AND OPEN CURVES PMCID: PMC522413 ON A RELATION BETWEEN CONFORMAL AND PROJECTIVE GROUPS IN FUNCTION SPACE PMCID: PMC522414 ON ELEMENTS OF CONTENT IN METRICAL GEOMETRY PMCID: PMC522415 POTENTIALS OF GENERAL MASSES IN SINGLE AND DOUBLE LAYERS. THE RELATIVE BOUNDARY VALUE PROBLEMS PMCID: PMC522416 SUMMARY OF RESULTS AND PROOFS ON FERMAT'S LAST THEOREM (FOURTH PAPER) PMCID: PMC522417 NOTE ON C. S. PEIRCE'S EXPERIMENTAL DISCUSSION OF THE LAW OF ERRORS PMCID: PMC522419 Physics PHOTO-ELECTRIC EMISSION AND THERMIONIC EMISSION ONCE MORE PMCID: PMC522420 THE QUANTUM LAWS AND THE UNCERTAINTY PRINCIPLE OF HEISENBERG PMCID: PMC522421 THE TRANSFORMATION SPECTRUM OF THE RUBY PMCID: PMC522422 THE EFFECTS OF AN HOMOLOGOUS SERIES OF AMINES ON THE MOBILITIES OF IONS IN HYDROGEN GAS PMCID: PMC522423 Zoölogy THE ANALYSIS OF A CONCRETE CASE OF INTERGRADATION BETWEEN TWO SUBSPECIES PMCID: PMC522418 | ||