This journal provides immediate access to some articles. Volume 44(6); June 1958 Astronomy A THEOREM ON FORCE-FREE MAGNETIC FIELDS PMCID: PMC528606 Biochemistry THE EFFECTS OF HYDROXYLAMINE ON THE C14O2 FIXATION PATTERN DURING PHOTOSYNTHESIS PMCID: PMC528607 PROTEIN BIOSYNTHESIS BY A CELL-FREE BACTERIAL SYSTEM PMCID: PMC528608 VITAMIN K, AN ESSENTIAL FACTOR FOR THE PHOTOCHEMICAL ACTIVITY OF ISOLATED CHLOROPLASTS PMCID: PMC528609 IONIZATION OF INDIVIDUAL GROUPS IN DIBASIC ACIDS, WITH APPLICATION TO THE AMINO AND HYDROXYL GROUPS OF TYROSINE PMCID: PMC528610 PTERIDINES IN PHOTOSYNTHESIS—AN ARTIFACT OF PAPER CHROMATOGRAPHY PMCID: PMC528611 ON THE EMISSION OF TRYPTOPHAN PMCID: PMC528612 ON DISSOCIATION AND RECOMBINATION OF HUMAN ADULT HEMOGLOBINS A, S, AND C PMCID: PMC528613 EFFECT OF AGE ON THE ENZYME ACTIVITY IN ERYTHROCYTES PMCID: PMC528614 SPONTANEOUS NUCLEATION IN SUPERSATURATED VAPORS PMCID: PMC528615 STUDIES ON THE EXCITED STATES OF PROTEINS PMCID: PMC528616 Botany WALL THICKENING IN SIEVE ELEMENTS PMCID: PMC528617 Genetics INFLUENCE OF THE NUCLEOLUS ON MITOSIS AS REVEALED BY ULTRAVIOLET MICROBEAM IRRADIATION PMCID: PMC528618 THE IMMUNE STATUS OF LONG-TERM SURVIVORS OF LETHALLY X-IRRADIATED MICE PROTECTED WITH ISOLOGOUS, HOMOLOGOUS, OR HETEROLOGOUS BONE MARROW PMCID: PMC528619 GENETIC STUDIES OF IRRADIATED NATURAL POPULATIONS OF DROSOPHILA. II. 1957 TESTS PMCID: PMC528620 Mathematics A NEW PROOF OF THE STRONG MARKOV THEOREM OF CHUNG PMCID: PMC528621 DYNAMIC PROGRAMMING, SUCCESSIVE APPROXIMATIONS, AND MONOTONE CONVERGENCE PMCID: PMC528622 ON THE THEOREM OF BERTINI FOR LOCAL DOMAINS PMCID: PMC528623 THE STRUCTURE OF PRIME RINGS WITH MAXIMUM CONDITIONS PMCID: PMC528624 ON THE STRUCTURE OF COMPACT RIEMANNIAN MANIFOLDS PMCID: PMC528625 A FORMULA FOR THE MULTIPLICITY OF A WEIGHT PMCID: PMC528626 Pathology and Bacteriology TRANSDUCTION BY BACTERIOPHAGE P1: ABNORMAL PHAGE FUNCTION OF THE TRANSDUCING PARTICLES PMCID: PMC528627 THE FUNCTION OF EXTRACELLULAR ENZYMES OF DUTCH ELM DISEASE PATHOGEN PMCID: PMC528628 NOMENCLATURE OF THE ACTINOMYCINS PMCID: PMC528629 Physics ON THE NATURE OF FREE RADICALS DETECTED BY PARAMAGNETIC RESONANCE IN BIOLOGICAL SUBSTANCES PMCID: PMC528630 ADDENDUM TO SPIN, STATISTICS, AND THE TCP THEOREM PMCID: PMC528631 Physiology THE RELATION BETWEEN LONGEVITY AND OBESITY IN HUMAN BEINGS PMCID: PMC528632 Zoölogy INTERRACIAL HYBRIDIZATION AND BREAKDOWN OF COADAPTED GENE COMPLEXES IN DROSOPHILA PAULISTORUM AND DROSOPHILA WILLISTONI PMCID: PMC528633 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||