256 THE ACTION OF THE LIVING CELL 



the injury. This may be true, but as yet the experi- 

 mental data available are insufficient to warrant any 

 definite statement on this point. 



Taken together, the experimental facts enumerated 

 above appear to substantiate the hypothesis that in 

 the plant w^orld some endocellular product plays a 

 role similar to that of cytost in the animals. 



