no RESPONSE IN THE LIVING AND NON-LIVING 



the first taken on the day of the experiment. The ampli- 

 tudes of vibration were 45, 90, and 135. In (ft) are 

 given the records of the next series, which are in every 

 case greater than those of (a). This shows that pre- 

 vious vibration, by conferring increased mobility, had 

 heightened the response. In this case, removal of mole- 

 cular sluggishness is attended by greater intensity of re- 

 sponse, without much change in the period of recovery. 

 In connection with this it must be remembered that 



4-5" 60' 



(a) Three sets of responses for 45, 90, and 135 vibration in a sluggish wire. 



(b) The next three sets of responses in the same wire ; increased mobility con- 



ferred by previous vibration has heightened the response. 



greater strain consequent on heightened response has a 

 general tendency to a prolongation of the period of 

 recovery. 



It is thus seen that when the wire is in a sluggish 

 condition, successive vibrations confer increased mole- 

 cular mobility, which finds expression in quickened re- 

 covery or heightened response. 



Effect of temperature. Similar considerations lead 

 us to expect that a moderate rise of temperature will be 

 conducive to increase of response. This is exhibited in 



