Art. II.] 



Herrick, Gtistatory Paths in Fishes. 



59 



Fig. lb. Sagittal section 

 through the brain of a young 

 carp, 5 cm. long. Golgi 

 method. X 40- 



The section is somewhat 

 oblique, the caudal end being 

 farther mesial. The terminal 

 arborizations of the gustatory root of the facial nerve are richly impreg- 

 nated. Two neurones are shown in the extreme cephalic part of the lobus IX, 

 one of whose neurites {a) arborizes in the motor IX nucleus. These neurones 

 lie in about the transverse level indicated in Fig. 17 and at the level of r. IX. sen. 

 in Fig. 18. Their dendrites are reached by gustatory root fibers of the IX nerve. 

 The neurone marked b is evidently of the same type as the one similarly desig- 

 nated in Fig. 18. r.lat.X., ramus lateralis vagi; t.a., caudal tip of tuberculum 

 acusticum ; tr.sp. V., spinal V root. 



