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This journal provides immediate access to some articles. Volume 15(4); October 1940 Articles A STUDY OF THE PIGMENTS PRODUCED IN DARKNESS BY CERTAIN GREEN ALGAE PMCID: PMC437858 USE OF TENSIOMETERS IN REGULATING WATERING IN FOREST NURSERIES PMCID: PMC437859 THE EFFECT OF VARIOUS WAVEBANDS OF SUPPLEMENTARY RADIATION ON THE PHOTOPERIODIC RESPONSE OF CERTAIN PLANTS PMCID: PMC437860 EFFECTS OF ENVIRONMENTAL FACTORS ON OXIDIZING ENZYMES OF ROSE MALLOW SEEDS PMCID: PMC437861 STUDIES ON THE PROTOPLASMIC NATURE OF STIMULATION AND ANESTHESIA. II PMCID: PMC437862 PHYSIOLOGICAL FACTORS OPERATIVE IN ICE-SHEET INJURY OF ALFALFA PMCID: PMC437863 THE RELATIVE RATES OF DESTRUCTION OF PECTIN IN MACERATES OF VARIOUS CITRUS FRUITS PMCID: PMC437864 MOVEMENT OF ORGANIC SOLUTES IN THE SAUSAGE TREE KIGELIA AFRICANA PMCID: PMC437865 DETERMINATION OF AMMONIA, GLUTAMINE, AND ASPARAGINE AMIDE NITROGEN IN PLANT JUICE PMCID: PMC437866 SOME CHEMICAL AND RESPIRATIONAL CHANGES IN THE PAPAYA FRUIT DURING RIPENING, AND THE EFFECTS OF COLD STORAGE ON THESE CHANGES PMCID: PMC437867 A SEMI-MICRO METHOD FOR THE DETERMINATION OF REDUCING SUGARS PMCID: PMC437868 SAND CULTURE STUDIES OF THE USE OF SALINE AND ALKALINE WATERS IN GREENHOUSES PMCID: PMC437869 INFLUENCE OF AUXINS ON REPRODUCTION OF LEMNA MAJOR PMCID: PMC437870 AN ESTIMATION OF THE VOLUME OF WATER MADE AVAILABLE BY ROOT EXTENSION PMCID: PMC437871 DETERMINATION OF THE NITROGEN FRACTIONS IN ATLAS AND MILO SORGHUM PLANTS PMCID: PMC437872 SOME EFFECTS OF STANNOUS SULPHATE AND STANNIC CHLORIDE ON SEVERAL HERBACEOUS PLANTS PMCID: PMC437873 THE LITHIUM METHOD OF MEASURING THE EXTENT OF CORN ROOT SYSTEMS PMCID: PMC437874 Brief Papers: MONTHLY ABSORPTION OF NUTRIENTS FROM THE SOIL BY THE PERFECTION PIMIENTO PLANT PMCID: PMC437875 Note NOTES PMCID: PMC437876 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||
