This journal provides immediate access to some articles. Volume 14(3); July 1939 Articles ATMOSPHERIC HUMIDITY AND TEMPERATURE IN RELATION TO THE WATER SYSTEM OF PLANTS AND SOILS PMCID: PMC437754 STUDIES ON ANTAGONISTIC PHENOMENA AND CATION ABSORPTION IN TOBACCO IN THE PRESENCE AND ABSENCE OF MANGANESE AND BORON PMCID: PMC437755 TRANSPIRATION AND PHYSICO-CHEMICAL PROPERTIES OF LEAVES AS RELATED TO DROUGHT RESISTANCE IN LOBLOLLY PINE AND SHORTLEAF PINE PMCID: PMC437756 SOME INVESTIGATIONS ON THE ASSIMILATION OF APPLE LEAVES PMCID: PMC437757 INFLUENCE OF CERTAIN AMINO ACIDS AND OF NICOTINIC ACID UPON THE NICOTINE CONTENT OF TOBACCO LEAVES PMCID: PMC437758 GROWTH OF WHEAT PLANTS FROM DRY AND SOAKED IRRADIATED GRAINS PMCID: PMC437759 GREENHOUSE STUDIES OF THE EFFECT OF CLIPPING THE TOPS OF ALFALFA AT VARIOUS HEIGHTS ON THE PRODUCTION OF ROOTS, RESERVE CARBOHYDRATES, AND TOP GROWTH PMCID: PMC437760 EQUIPMENT FOR THE GROWING OF PLANTS AT CONTROLLED TEMPERATURES PMCID: PMC437761 GLYCINE IN THE NUTRITION OF EXCISED TOMATO ROOTS PMCID: PMC437762 EFFECTS OF CATIONS AND ANIONS ON PROTOPLASMIC ELASTICITY PMCID: PMC437763 CHARACTERISTICS OF THE TYROSINASE SYSTEM IN POTATOES WHICH BLACKEN AFTER BOILING PMCID: PMC437764 CARBOHYDRATES OF WHEAT LEAVES PMCID: PMC437765 STIMULATION OF GERMINATION OF DORMANT LETTUCE SEED BY SULPHUR COMPOUNDS PMCID: PMC437766 SOME FACTORS CONTRIBUTING TO TOMATO PUFFING PMCID: PMC437767 ELECTRODIALYSIS OF PEA SEEDS PMCID: PMC437768 INTERPRETATION OF COMPARATIVE GROWTHS OF FUNGAL COLONIES GROWING ON DIFFERENT SOLID SUBSTRATA PMCID: PMC437769 THE CALIBRATION OF A CONSTANT RECORDING ILLUMINOMETER WHEN THE SENSITIVE SAMPLING SURFACE IS HORIZONTAL PMCID: PMC437770 MOLYBDENUM AS AN ESSENTIAL ELEMENT FOR HIGHER PLANTS PMCID: PMC437771 Brief Papers: SINTERED PYREX GLASS AERATORS PMCID: PMC437772 NITROGEN NUTRITION IN RELATION TO YIELD AND QUALITY OF GRAPEFRUIT PMCID: PMC437773 Note NOTES PMCID: PMC437774 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||