[ 129 J 
longitudinally from the anterior extremity 
of the animal to the tranfverfe cartilage, 
which divides the thorax from the abdo¬ 
men, and within thefe limits they occupy 
the whole fpace between the fkin of the 
upper and of the under furfaces. 
Thefe organs confift of perpendicular 
columns reaching from the under to the 
upper furface of the body. The length 
of thefe columns is different in different 
parts of the body.—Their form is very 
irregular—the greater part of them is 
hexagonal, or rather irregularly pentago¬ 
nal. Their number varies according to 
the fize and age of the animal. In a very 
large torpedo, one eledtrical organ con- 
lifted of 1182 columns. 
Each column is divided by horizontal 
partitions placed over each other at very 
fmall diftances, and forming numerous 
interftices, which appear to contain a fluid. 
Thefe partitions confift of a very thin 
membrane confiderably tranfparent. 
K 
The 
