[ i6j ] 
Mr. Moorcroft, who aflifted me in 
thefe experiments, very judicioufly ob- 
ferved, that the fhocks produced by arti¬ 
ficial electricity did not imitate the natural 
mufcular contractions as much as thofe 
which were the confequence of the appli¬ 
cation of the metalic exciter. 
Experiment CXXXVIII. 
i 
I laid bare the brachial plexus of a horfe 
which was juft killed. When the jar was 
charged, and brought within an inch of the 
plexus, the animal gave a ftrong ftipck. 
Experiment CXXXIX. 
The jar was charged, fo that at five or 
fix inches from the electrometer, the pith- 
balls diverged four or five lines. On the 
knob being brought in contact with the 
nerves, not any motion was obfervable. 
M 3 Exreri- 
s) 
