[ 45 ] 
A fimilar phenomenon occured in a frog 
which had been fubjedted to experiment 
for an hour. Zinc ferved as a coating for 
the nerves. On placing a leaden exciter 
upon this and the coating of the mufeles, 
we were not aware of the flighted move¬ 
ment ; but as foon as I took off the ex¬ 
citer, and deflroyed the communication, 
the movements took place. This experi¬ 
ment was repeated by many of the Com- 
mifTaries, and found to be conftant. 
The nerves of the fore legs of a rabbit* 
detached from the body, were enveloped 
with a piece of tin foil. By placing af¬ 
terwards a piece of filver as exciter upon 
the neighbouring mufeles, and touching 
the coating with it at the fame time, the 
animal experienced violent convulfions. 
When one of the coatings was of gla¬ 
ziers lead, and the other of the fame, or 
of affay lead, there were not any move¬ 
ments. 
Nor 
