1 6 RESPONSE IN THE LIVING AND NON-LIVING 



responses are modified by various conditions in exactly 

 the same manner as those of animal tissues. In order 

 to show how striking are these similarities, I shall for 

 comparison place side by side the responses of animal 

 tissues and those I have obtained with plants and 

 inorganic substances. For the electric response in 

 animal tissues, I shall take the latest and most complete 

 examples from the records made by Dr. Waller. 



But before we can obtain satisfactory and conclusive 

 results regarding plant response, many experimental 

 difficulties will have to be surmounted. I shall now 

 describe how this has been accomplished, 1 



1 My assistant Mr. J. Bull has rendered me very efficient help in these 

 experiments. 



