Experimental Researches on Vegetable Assimilation and Respiration. IX.-On Assimilation in Submerged Water-Plants, and Its Relation to the Concentration of Carbon Dioxide and other Factors

The fourth paper of this series contained an account of quantitative investigations on the magnitude of assimilation in the leaves of land-plants under different conditions of illumination and temperature. The general conclusion reached was that the actual magnitude of assimilation in a leaf at any moment is determined by one or other of the main controlling conditions, light, temperature, or CO2-supply, acting as a limiting factor.