[ J4 1 ] 
equally in the nerves, and in the mufcles. 
To fupport this opinion (till more, he ob- 
ferves, that ftrong fhocks are produced by 
touching the coating of the brain, and that 
if the mufcles are coated, the animal only 
moves a little, and that even but feldom. 
He likewife remarks, that the experiment 
fucceeds on touching the coated nerves 
when feparated from the mufcles, but that 
there is not any effeCt when the mufcles 
are coated and feparated from the nerves. 
(Journal de Phyfiq. mois de Juielet 1792, 
p. 52, &c.) 
The author by applying a pofitive or 
negative electricity to the nerves, believed 
he could diredt it againft a furface charged 
plus or minus, but this was a miftake. 
The nerves communicate with all the 
points of the mufcles, and cpnfequently 
with feveral furfaces charged with oppo¬ 
se electricities. Thus it is not poffible 
by this means to judge of the nature of 
the eleCtriqity we may with to difcover. 
With 
