98 



The Seer eto -motor Effects in the Cat's Foot. [Jan. 16, 



Addendum, December 10, 1903. 



The latent period and the duration of the response are smaller at 

 liigh temperature, greater at low temperature. And under similar 

 conditions the voltage of the response is greater at high than at low 

 temperature. These three points are illustrated by fig. 10 of a single 

 response from the left foot enclosed in a cool chamber at +9°, and from 

 the right foot enclosed in a warm chamber at + 35°. 





Cold. 



Warm. 



Duration of response. . . . 



4 sees. 

 30 „ 

 -0065 volt. 



1 "5 sees. 

 10 „ 

 -0122 volt. 



The progressive alterations exhibited by fig. 10 are no doubt 

 influenced by the falling temperature that normally occurs in a limb 

 after arrest of the circulation. 



