This journal provides immediate access to some articles. Volume 17(4); October 1942 Articles A METHOD OF STUDYING THE MOVEMENT OF RESPIRATORY GASES THROUGH WAXY COATINGS PMCID: PMC438052 HYDROGEN ION CONCENTRATION IN RELATION TO ABSORPTION OF INORGANIC NUTRIENTS BY HIGHER PLANTS PMCID: PMC438053 INFLUENCE OF HYDROGEN ION CONCENTRATION ON THE GROWTH OF HIGHER PLANTS UNDER CONTROLLED CONDITIONS PMCID: PMC438054 CARBOHYDRATE AND NITROGEN TRENDS IN BLUEBUNCH WHEATGRASS, AGROPYRON SPICATUM, WITH SPECIAL REFERENCE TO GRAZING INFLUENCES PMCID: PMC438055 THE PROXIMATE CHEMICAL CONSTITUTENTS OF CITRUS WOODS, WITH SPECIAL REFERENCE TO LIGNIN PMCID: PMC438056 THE IRON-MANGANESE RELATION IN PLANT METABOLISM PMCID: PMC438057 INFLUENCE OF SUBMERSION OF THE ROOTS ON TRANSPIRATION, APPARENT PHOTOSYNTHESIS, AND RESPIRATION OF YOUNG APPLE TREES PMCID: PMC438058 GROWTH RATES OF MAIZE UNDER FIELD CONDITIONS PMCID: PMC438059 GROWTH RESPONSES OF BARLEY SEEDLINGS IN RELATION TO POTASSIUM AND SODIUM NUTRITION PMCID: PMC438060 COMPARISON OF THE EFFICIENCY OF SINGLE APPLICATIONS WITH REPEATED TOP DRESSINGS OF NITROGENOUS FERTILIZERS IN INCREASING THE YIELD OF DRY MATTER, NITROGEN, AND VITAMIN C (ASCORBIC ACID) OF SUDAN GRASS PMCID: PMC438061 THE AMOUNT OF BORON ABSORBED BY SOYBEAN PLANTS AND ITS EFFECT ON THEIR GROWTH PMCID: PMC438062 COMPARISON OF THE CALCIUM AND SULPHUR CONTENT OF PLANT FLUIDS EXPRESSED FROM TISSUES KILLED BY AUTOCLAVING AND BY FREEZING WITH SOLID CARBON DIOXIDE PMCID: PMC438063 INTERLABORATORY COMPARISON OF ABSORPTION SPECTRA BY THE PHOTOELECTRIC SPECTROPHOTOMETRIC METHOD.—DETERMINATIONS ON CHLOROPHYLL AND WEIGERT'S SOLUTIONS PMCID: PMC438064 INFLUENCE OF SULFANILAMIDE AND DERIVATIVES ON GROWTH OF LUPINUS ALBUS PMCID: PMC438065 A COMPARISON OF THE EFFECTS OF GREEN LIGHT AND OF RED LIGHT ON THE SIMPLE-LEAF DEVELOPMENT OF INTACT AND DECAPITATED BEAN PLANTS PMCID: PMC438066 THE MECHANISM OF AUXIN ACTION PMCID: PMC438067 Brief Papers: ENZYMES AND THE LAW OF MASS ACTION PMCID: PMC438068 AERIAL ROOTS FROM OLD TREE WOUND PMCID: PMC438069 Note NOTES PMCID: PMC438070 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||