I 202 ] 
to gain the different furfaces of the inui- 
cular fibres, and that it is in this way that 
it occafions the alternate contractions and 
relaxations of the mufcles. But as thefe 
means of communications exift conti¬ 
nually, the movements ought confequently 
to be perpetual. This objection will 
doubtlefs be made by many, and for my 
own part I confefs, I cannot remove it 
either by direCt proofs drawn from the 
median ifm of the mufcles and nerves, or 
by experiments. Notwithffanding, I muff 
obferve, that the fame circumftance which 
takes place in the eleCtrical fiflies* may 
likewife occur here. The eleCtrical organs 
are charged, the way of communication 
between the furfaces electrified pofitively 
and negatively exifl as they do in the 
mufcles. But thefe ways are only open 
to the will of the animal. This is a faCt, 
and thofe who acknowledge and feel the 
force of analogy, cannot refufe their con¬ 
currence 
