Abstract
1. Stem cuttings provided with leaves and single leaf cuttings of Eureka lemon (a variety of Citrus limonia Osbeck) and Navel orange (a variety of C. sinensis Osbeck) constituted the material for this study. During the rooting process changes occurred in the percentages of soluble calcium and potassium of the water-soluble ash in the dry matter. In the case of stem cuttings, the greatest reduction in soluble calcium was found to occur in the stem, the leaves actually showing a slight but consistent increase. In leaf cuttings where no stem was present there was also a loss of soluble calcium. In the case of potassium the main loss was sustained by the leaves of the stem cuttings, and a similar reduction also occurred in the leaf cuttings. 2. When rooted lemon leaf cuttings were grown in culture solutions of different concentrations of calcium, it was found that while the soluble calcium content of the leaves did not change to any great extent, the soluble potassium content increased enormously. 3. The solu...
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