Soon afterward, Nicolas-Théodore de Saussure showed that the increase in mass of the plant as it grows could not be due only to uptake of CO2 but also to the incorporation of water.
Kort tid derefter påviste Nicolas-Théodore de Saussure, at den forøgelse af plantens masse, der foregår, mens den vokser, ikke udelukkende kunne skyldes optagelsen af CO2, men også stammede fra forbruget af vand.