C *9 1 
Experiment XLVIT. 
I applied opium to one of the crural 
nerves of a frog; it appeared that both 
this and the other extremity had, in fome 
meafure, fuffered from its influence. Yet, 
after a certain time, both recovered their 
former force. 
Experiment XLVIII. 
Opium applied to the cut end of a nerve, 
did not produce any effect upon its vitality; 
the movements being very ftrong, and 
continuing for a long time. 
Experiment XLIX. 
Having enveloped the crural nerve with 
opium, and let it remain for ten minutes, 
my exciter could not bring forth any 
movements. I armed the nerve along the 
thigh, and the movements occurred. The 
animality of this leg difappeared three 
F 3 quarters 
