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fed; has a caufe, and this caufe we aflert to 
be eledricity. But in what manner, it 
may be alked, does eledricity operate ? 
Does it irritate the mufcular fibre at the 
inftant it pafles from one to the other fur- 
face of the mufcle, and that its equilibrium 
is reftored ? 
For a time I believed this to be the cafe, 
and it was likewife the opinion of Pro- 
feflor Galvani; but on coming to confider 
it with more attention, it appeared to me 
to contain infuperable difficulties, viz. 
i ft. Each difcharge ought to be fuc- 
ceeded by a new rupture of the equili¬ 
brium, which could not be effeded with 
the rapidity we obferve in the movements, 
nor perhaps without a conftant lofs of this 
fluid, and likewife a more complicated 
architedure. 
sd. The attradion would be the efifed 
of a ftimulus, which does not accord with 
the idea philofophers have aftbciated with 
the term. For 
