Abstract
The traces for leaves and tillers were followed back along the stem by examining successive sections made across it. Their courses downward through the internode above the point of insertion of a leaf to a node are illustrated in the diagram. (Fig. 1). When the leaves were supplied with radioisotope P32 solution for a short time, it was proved, as shown in Fig. 1, and Table 1 and 2, that the quantity of P32 transferred to the other leaves and the tillers was clearly conformed to readiness of connection among their vascular strands at the node.
