This journal provides immediate access to some articles. Volume 27(2); April 1952 Articles Molybdenum Requirement of Leguminous Plants Supplied with Fixed Nitrogen PMCID: PMC540325 The Formation of Starch in Leaves of Bryophyllum Calycinum Cultured in Darkness PMCID: PMC540326 Metabolism of Infiltrated Organic Acids by Tobacco Leaves PMCID: PMC540327 Electrical and Curvature Responses of the Avena Coleoptile to Unilateral Illumination PMCID: PMC540328 Genetic and Chlorophyll Studies of a Yellow-Green Mutant in Muskmelon PMCID: PMC540329 Effect of Petroleum Oil Spray on Photosynthesis and Respiration in Citrus Leaves PMCID: PMC540330 The Osmotic Change during Auxin-Induced Water Uptake by Potato Tissue PMCID: PMC540331 Surface Activity as Related to Physiological Activity of Plant Growth-Regulators PMCID: PMC540332 Metabolism of 2,4-Dichlorophenoxyacetic Acid. I. C14O2 Production by Bean Plants Treated with Labeled 2,4-Dichlorophenoxyacetic Acids PMCID: PMC540333 Frenching Symptoms Produced in Nicotiana Tabacum and Nicotiana Rustica with Optical Isomers of Isoleucine and Leucine and with Bacillus Cereus Toxin PMCID: PMC540334 Varietal Root and Top Regeneration of Fig Cuttings as Influenced by the Application of Indolebutyric Acid PMCID: PMC540335 Measurement of Metabolic Gas Exchange with a Recording Mass Spectrometer PMCID: PMC540336 Nitrogen and Phosphorus Fractions, Respiration, and Structure of Normal and Crown Gall Tissues of Tomato PMCID: PMC540337 Pre- and Post-Harvest Changes in Carotene, Total Carotenoids and Ascorbic Acid Content of Sweetpotatoes PMCID: PMC540338 Absorption Spectra of Leaves. I. The Visible Spectrum PMCID: PMC540339 The Role of Ortho-Substitution in the Synthetic Auxins PMCID: PMC540340 Brief Papers: Further Studies in the Simplification of Equipment for Subirrigation Experiments in Plant Nutrition PMCID: PMC540341 Relationship of the Cobalt and Light Effects on Expansion of Etiolated Bean Leaf Disks PMCID: PMC540342 Light Absorption by Chlorophyll at High Concentrations PMCID: PMC540343 The Effect of Hypocotyl Temperature on Translocation of Carbohydrates from Bean Leaves PMCID: PMC540344 The Biosynthesis of Carbon-14-Labeled Compounds. II. The Chromatographic Separation of the Monosaccharides, Disaccharides, and Trisaccharides from Plant Extracts PMCID: PMC540345 Note Notes PMCID: PMC540346 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||