INJECTION' KXlM•:Kl^[^;^T.s ox plants. 11 



the following day, and confirmed that lithium was present through- 

 out the long stem, but less in the leaves. 



We may infer from this demonstration, that in the case of 

 injection, lithium can be more or less conducted through the body 

 of the submerged water-plant, but the quantity of lithium conducted 

 is so minute, that I could not detect it spectroscopically. As to 

 the fact, that lithium, being conducted, was not stored up in the 

 submerged body, but was lost from the injected part in course of 

 time, we may imagine that lithium in part exudes out of the 

 water-pores of the leaf or other parts into the surrounding water, 

 and in part diffuses into the water from the wound made by the 

 injecting needle. ■ 



2. Upafaei) conduction and downward conduction. 



We should not leave the fact unnoticed that the injected 

 solution was conducted not only in an upward direction but also 

 more or less downward, which we see in almost all of the experi- 

 mental data. The upward conduction, as a rule, was observ- 

 ed most conspicuously, especially in the case of transpiring organs 

 I observed that lithium travelled up to a distance of 337 cm. 

 in Trichosanthes cucumeroidcs (exp. 15) and 203 cm. in Cornus con- 

 troversa (exp. 5). Here I may tabulate the comparison of upward 

 and downward conduction, taking examples obtained in my ex- 

 periments, as follows. 



