L S° ] 
Is by means of them we difcover, that 
this adtive principle, of which the animals 
appeared exhaufted, Hill retains confider- 
able force, and does not perifh in fo fhort 
a time. 
Imagining that heat would increafe the 
conducing power of water, I heated a 
fmall quantity, in which I immerfed a 
prepared animal. The heat was not con- 
liderable, but yet I perceived it adted upon 
the mufcular parts by the diftenfion of the 
legs. I now refolved to eftablifh. a com¬ 
munication between the legs of the frog 
and the water, by means of a coating, 
one end of which was plunged in it. 
This frog having been much injured, 
gave, when excited, only fome flight 
Ihocks. A fecond was fubflituted, and the 
effedts fucceeded to my expedition. As 
the water began to cool, I changed it, but 
that I poured into the vefTel was much 
hotter than the foil. On forming the 
corarau- 
