Effect of Soil-Moisture Content on the Rate of Photosynthesis and Respiration in Ladino Clover (Trifolium Repens L.).

A Study of the Role of the Hydrogen Ion in the Mechanism of Potassium Absorption by Excised Barley Roots.

Cytochrome Oxidase Content and Respiratory Rates of Etiolated Wheat and Barley Seedlings.

Effects of Polluted Atmospheres on Organic Acid Composition in Plant Tissues.

Auxin-Antiauxin Interaction at High Auxin Concentrations.

The Dual Role of Auxin in Flowering.

Roles of Embryo and Endosperm in Determining Niacin Content of Starchy and Sugary Maize Endosperms.

Relation of Respiratory and Enzymatic Activity to Corn Seed Viability.

Glucose Dissimilation in the Higher Plant. Effect of Age of Tissue.

Effect of Certain Metabolic Inhibitors on Translocation of P³² in Bean Plants.

Incorporation of Radioactive Amino Acids into the Proteins of Plant Tissue Homogenates.

Nonvolatile Organic Acids of Crown Galls, Crown Gall Tissue Cultures and Normal Stem Tissue.

Effects of Sporulation Medium and Age on Fungus Spore Physiology.

Studies on Nitrogen-Fixing Blue-Green Algae. I. Growth and Nitrogen Fixation by Anabaena Cylindrica Lemm

Conversion of Carbon-14-Labeled Urea into Amino Acids in Leaves.

Bioassay of Mercury Vapor Arising from a Phenyl Mercury Compound.

Incorporation of Radioactive Acetate and Sucrose into Amino Acids and Protein of Excised Organs of Red Kidney Bean.

News and Notes

The Formation of Indoleacetylaspartic Acid in Pea Seedlings.

Inhibition of Plant Growth by 2-Mercaptobenzimidazole Analogs.

A Survey of the Nonvolatile Organic Acids in Seedlings of Some Grasses and Legumes.

Transpiration and the Absorption and Distribution of Radioactive Phosphorus in Plants.

Studies on Nitrite Metabolism in Higher Plants.

Flower-Promoting Activity of Pea Seed Diffusates.