14 



ART. 6. Y. YENDO 



3. Transverse coxductiox. 



The injected solution was conducted not only longitudinally 

 but also more or less transversely (Gaunersdoefee, 6). In Cornus 

 €ontroveisa (exp. 54, 55) lithium was found in the wood of the 

 injected side of the stem considerably wider and deeper than the 

 dimension of the wound in which the injection was made, but 

 did not spread so much as to reach the opposite side. 



In the case of a smallej' stem, lithium was present through- 

 out, but the amount of lithium in the injected side always 

 exceeded that in the other parts. 



We learn roughly from these facts that transverse conduc- 

 tion takes place moderately through the lignified wood. I also 

 observed less transverse conduction in plants whose vascular bundles 

 are arranged separately, being interjected by soft parenchymatous 

 cells. 



An apparent transverse conduction often occurred in plants 

 which have transverse connections amons: the long-itudinal vascular 



