I 
C J 49 1 
The following is a convincing experi¬ 
ment The ends of two wires were put 
into the w ? ater of the velTel, which con¬ 
tained the animal; thefe wires were of 
fome length, ftretched to their extent, and 
terminated in two glaffes of water placed 
nt a confiderable diftance from each other. 
Whilft the apparatus remained in this 
flate, and the circulation was of courfe inr 
terrupted, the animal did not prepare to 
exercife his power, but the inflant a fpec- 
tator, or any conducting fubftance filled 
the interval, and rendered the circle com¬ 
plete, it inftantly approached the wires, 
arranged itfelf, and gave the fhock. 
It is necefiary to obferve, that this com- 
rnunication or circle was completed en¬ 
tirely out of the fight of the animal. If 
the animal had a knowledge of it, it was 
undoubtedly by means of a certain fenfa- 
tion excited in him, and this fenfation 
could not poffibly be excited but by the 
L 3 circu- 
