[ 4°4 ] 
their courfe forwards upon that bag, they dip in between 
it and the organ, where they divide into fmaller branches ; 
then they get upon the middle partition, on which they 
continue to divide intoftill fmaller branches; after which 
they pafs on, and get upon the fmall bones and muf- 
cles, which are the bafes for the under fin, and at laft 
they are loft on that fin. After having got between the 
organ and the above mentioned parts, they are conftantly 
fending fmall nerves into the organs ; firft into the great 
organ, and then into the fmall one ; alfo into the mufcles, 
of the fin, and at laft into the fin itfelf. Thefe branches, 
which are fent into the organ as the trunk pafles along, 
are fo fmall, that I could not trace their ramifications in 
the organs. In this fifli, as well as in the torpedo, the 
nerves which fupply the organ are much larger than 
thofe beftowed on any other part for the purpofes of 
fenfation and adlion ; but it appears to me, that the or- 
gan of the torpedo is fupplied with much the largeft pro- 
portion. If all the nerves which go to it w^ere united to- 
gether, they would make a vaftly greater chord, than all 
thofe which go to the organ of this eel. Perhaps when 
experiments have been made upon this fifli, equally ac- 
curate wdth thofe made upon the torpedo, the reafon for 
this difference may be alfigned. 
BLOOD VESSELS. 
Hov/ far this organ is vafcular, I cannot pofitively de- 
termine ; but from the quantities of fmall arteries going 
to it, I am inclined to believe, that it is not deficient in 
veffels. 
