This journal provides immediate access to some articles. Volume 13(2); April 1938 Articles PRELIMINARY EXPERIMENTS ON THE RELATION OF GROWTH-PROMOTING SUBSTANCES TO THE REST PERIOD IN FRUIT TREES PMCID: PMC439360 PLANT DIASTASE IN EVIDENCE AS TO THE FORMATION AND STRUCTURE OF STARCH GRANULES PMCID: PMC439361 RESPIRATORY BLOCK IN THE DORMANT SPORES OF NEUROSPORA TETRASPERMA PMCID: PMC439362 AMMONIUM NUTRITION AND METABOLISM OF ETIOLATED SEEDLINGS PMCID: PMC439363 STRUCTURE OF THE STARCH GRANULE PMCID: PMC439364 A CHEMICAL AND PHYSIOLOGICAL STUDY OF TRAUMATIN, A PLANT WOUND HORMONE PMCID: PMC439365 EFFECT OF CERTAIN IONS, USED SINGLY AND IN COMBINATION, ON THE GROWTH AND POTASSIUM, CALCIUM, AND MAGNESIUM ABSORPTION OF THE BEAN PLANT PMCID: PMC439366 CHEMICAL AND SPECTROSCOPIC ANALYSIS OF PHLOEM EXUDATE AND PARENCHYMA SAP FROM SEVERAL SPECIES OF PLANTS PMCID: PMC439367 CARBOHYDRATE METABOLISM OF VITIS VINIFERA: HEMICELLULOSE PMCID: PMC439368 ACCESSORY SALTS IN THE NUTRITION OF EXCISED TOMATO ROOTS PMCID: PMC439369 INFLUENCE OF FOLIAGE SPRAYS ON DROUGHT RESISTANCE OF CONIFERS PMCID: PMC439370 FORMATION OF NITRATE IN DETACHED GREEN LEAVES OF SWISS CHARD AND TOMATO PMCID: PMC439371 FORMATION OF CAROTENOIDS AND CHLOROPHYLLS IN ETIOLATED BARLEY SEEDLINGS EXPOSED TO RED LIGHT PMCID: PMC439372 A PHOTOELECTRIC PHOTOMETER FOR CHEMICAL ANALYSIS PMCID: PMC439373 Brief Papers: APPLICABILITY OF KUNDT'S RULE TO CHLOROPHYLL PMCID: PMC439374 Note NOTES PMCID: PMC439375 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||