94 Bulletin of Laboratories of Denison University. [Voi.xiii 



tially similar. The large tract of descending neurites shown in 

 Fig. 37 passing from the facial lobe arises from the lateral part 

 of the lobe, while the ascending secondary tract, or central gus- 

 totory path, takes its origin from the more mesial portion of the 

 dorsal surface. These chief gustatory neurones of the facial 

 lobe are like those of the vagal lobe in staining reaction, posi- 

 tion and general relations. They are, however, smaller with 

 more slender dendrites. One of them is shown in the dorsal 



facia/ 

 lobe 



dorsal sec.neurone 



m. 



P^S-35- Portion of a transection though the cephalic end of the right facial 

 lobe of Ameiurus nehulosus. Golgi method. X 60. 



The communis (gustatory) root of the facialis {com.r, VII^ enters from be- 

 low. Dorsally is a single impregnated chief secondary neurone whose neurite 

 enters the secondary gustatory tract [s.g.t.), and below it is an intrinsic neurone 

 of type II (?'«.). 



