ELECTRIC ORGANS OF FISHES. 



351 



columns and the larger branches of the nerves and vessels of the 

 organ. Some of the vertical columns do not extend through the 

 entire thickness of the organ ; hut are interrupted where the 

 deep-seated nerves traverse the substance of the battery, fig. 231, 

 a, D. The transverse plates of the vertical columns are shown 



231 



The right electrical organ, divided horizontally, at the place where the nerves enter, Torpedo, lxxxi. 



at e. Hunter, who counted 470 columns in each organ, describes 

 the partitions as being very vascular : — ' The arteries,' he says, 

 'are branches from the vessels of the gills, which convey the 

 blood that has received the influence of respiration." But the 



1 I.XXXI. 



