JXJKCTJON KXI'KUnriONT.S OX PLAXTH. 9 



The result showed that conduction of the injected substances 

 could not be seen, and they discoloured in the course of time 

 (exp. 64, 70, 73). 



The lithium injection was also performed with this plant, but 

 no conspicuous transportation was observable (exp. 64). 



In short, we conclude from these experiments, that no con- 

 duction of the injected substance occurs, but merely diffusion, and 

 some parts of the injected solution gradually pass out of the 

 injected wound into the sea-water. 



IX. Discussion of the results. 



1. Relation bet\\'eex traxspiratiox and coxductiox or 



INJECTED solution. 



The experimental data given below show that an injection 

 solution, especially lithium, when injected into a stem is always 

 carried toward the transpiring organs, the leaves ; but not so much 

 to other organs, e.g. inflorescences (exp. 6, Ricinus communis, PI. I, 

 Fig. 5), buds and young organs, e.g. young leaves, terminal buds, 

 young shoots ; moreover, lithium when injected into a cotyledon, 

 rhizome, bulb and root is carried toward the shoot. In the case 

 of transpiration having been retarded, the conduction of the injected 

 solutions always diminishes. For instance, Vicia Faha (exp. 48, 

 49) cultured in the moist chamber, as above mentioned, showed 

 certain differences from the control plants. The experiments on 

 deciduous trees in winter indicated that the conduction of lithium 

 is feebler than that in leafy plants. It is manifest from these 

 facts that transpiration plays an important rôle in conducting the 

 injected solution. 



In the experiment with tlie inflorescence of Fafsia japonica 



