This journal provides immediate access to some articles. Volume 20(2); April 1945 Articles RESPIRATION AND INTERNAL GAS CONTENT OF INJURED SWEET-POTATO ROOTS PMCID: PMC437211 GROWTH AND NUTRIENT RESPONSES OF LITTLE TURKISH TOBACCO TO LONG AND SHORT PHOTOPERIODS PMCID: PMC437212 TEMPERATURE-GROWTH RELATIONS OF THE ROOTS AND HYPOCOTYLS OF COTTON SEEDLINGS PMCID: PMC437213 EFFECT OF CARBON DIOXIDE ON ABSORPTION OF WATER AND NUTRIENTS BY ROOTS PMCID: PMC437214 IRON IN THE LEAVES AND CHLOROPLASTS OF SOME PLANTS IN RELATION TO THEIR CHLOROPHYLL CONTENT PMCID: PMC437215 THE EFFECT OF REDUCED LIGHT INTENSITY ON THE AERIAL AND SUBTERRANEAN PARTS OF THE EUROPEAN BINDWEED PMCID: PMC437216 A SIMPLIFIED RECORDING POTENTIOMETER PMCID: PMC437217 SOME EFFECTS OF BORON AND MANGANESE ON THE QUALITY OF BEETS AND TOMATOES PMCID: PMC437218 THE B VITAMIN CONTENT OF BUDS AND SHOOTS OF SOME COMMON TREES PMCID: PMC437219 EFFECT OF COPPER AND ZINC DEFICIENCIES ON THE PHOTOSYNTHETIC ACTIVITY OF OF THE FOLIAGE OF YOUNG TUNG TREES PMCID: PMC437220 A GERMINATION INHIBITOR IN THE SEED COATS OF CERTAIN VARIETIES OF CABBAGE PMCID: PMC437221 A SIMPLE AND INEXPENSIVE VOLTAGE REGULATOR FOR LABORATORY USE PMCID: PMC437222 VITAMIN CONTENT OF SOME MATURE AND GERMINATED LEGUME SEEDS PMCID: PMC437223 Brief Papers: THE USE OF MONOCHLORACETIC ACID TO INCLUDE AMMONIA IN THE CHLORATE METHOD FOR TOTAL NITROGEN IN PLANT TISSUE PMCID: PMC437224 ALUMINUM TOXICITY: MICROCHEMICAL TESTS FOR INORGANICALLY AND ORGANICALLY BOUND PHOSPHORUS PMCID: PMC437225 PRE-STORAGE CARBON DIOXIDE TREATMENTS FOR CONTROL OF APPLE SCALD PMCID: PMC437226 Note NOTES PMCID: PMC437227 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||