C V ] 
Experiment LII. 
I plunged the crural nerves in a folution 
of opium, but was not aware of any dif¬ 
ference betwixt its effects and thofe of 
opium ufed in fubftance. 
Since that time, I have made a great 
number of experiments with opium, both 
in fubftance and folution, the refults of 
which I (hall only notice, as the detail 
of the whole would be tirefome to the 
reader. 
Opium has fcarcely ever extinguiftied 
the vitality immediately. Sometimes, in 
about five minutes, it has deprived the 
portion of nerve enveloped in it of its 
faculty of conducting electricity, and has 
almoft conftantly accelerated the death of 
thofe parts on which it has been allowed 
to exert its influence for a longer time, as 
■ 
for a quarter of an hour, twenty or thirty 
minutes. 
The folution has appeared to me pof- 
F 4 fefled 
