186 RESPONSE IN THE LIVING AND NON-LIVING 
exactly similar phenomenon in plants and metals, where 
successive responses to equal stimuli exhibited an 
nw ew 
A P M 

Fic. 114.—‘ Starrcase’ In Muscur, PLANT, AND METAL 
increase, apparently by a gradual removal of molecular 
slugeishness (fig. 114). 
M 

Before After Before After 
Fie. 115.—Increasep RESPONSE AFTER CONTINUOUS STIMULATION IN NERVE 
AND METAL 
The normal response in animal tissue is represented ‘ down,’ in metal ‘ up.’ 
Increased response after continuous stimulation.— 
An effect somewhat similar, that is to say, an in 
creased response, due to increased molecular mobility, 
