a 3« ] 
been fubje6ted to experiment becomes 
flat, and lofes its white colour, which, 
perhaps, may be owing to part of it being 
carried off along with the ele&ric fluid, 
but it If ill does not ceafe to condu<ft; for 
if we touch the coated nerve and the 
mufcles with the metal condudtor, the 
movements are excited, notwithftanding 
the alteration in its conftitution. Befides, 
in the limbs of frogs, which have been 
either thrown into water, or expofed to 
the action of the atmofphere for a certain 
time, I have found the nerves apparently 
in their natural ftate. Yet, notwithstand¬ 
ing this appearance, it is by no means a 
matter of indifference for the experiment, 
what part of the nerve is prepared and 
communicated with. 
Experiment XXL 
I had feveral frogs in a veffel filled with 
water, I mean, always prepared ones. I 
took 
