FUNCTIONS OF VEGETAL NERVE 559 



It is thus seen how all parts of the plant are, by means of 

 nerve-conduction, maintained in the most intimate communi- 

 cation with each other. It is, then, in virtue of the existence 

 of such nerves, that the plant constitutes a single organised 

 whole, each of whose parts is affected by every influence that 

 falls upon any other. 



