[ l6o ] 
the chain is" compofed of feveral people; 
The following is a ftriking i n fiance: 
Twelve of us joined hands j one of the 
two at the eftds of the chain touched the 
water of the glafs in which the thighs of 
the frogs were placed, whilft the other 
perfori touched with a piece of filver coin 
the coating of the fpine, which hung over 
the edge of the vefl’el in the oppofite fide. 
The animal fprung with force out of the 
vefleh 
The experiment was repeated when the 
chain was' interrupted, but notwithfland- 
ing the movements took place, the electri¬ 
city palling over the floor. One of the 
perfons who had withdrawn their hands 
in order to deftroy the continuity of the 
chain, fea’ted himfelf in an infulated chair. 
In this ftate, the experiment did not fuc- 
ceed, but he had fcarcely touched the floor 
with his toe, before the animal fprung up 
and fell into convulfions. 
Artificial electricity, when employed 
upon 
