90 Bulletin of Laboratories of Denison University [Voi. xiii 



arations showing only the intrinsic type II cells. In Acipenser 

 Johnston ('oi) finds these cells similar to my impregnations of 

 the cyprinoids, but much simpler. 



Fig. jj. Portion of a transverse section through the oblongata of Ameiurus 

 nebulosus in the cephalic part of the vagal lobe. From a GoLGi preparation. 



X 90. 



The section illustrates terminal arborizations of the most cephalic fibers of 

 the gustatory root of the vagus among the dendrites of the neurones of the later- 

 al secondary group and the course of the neurites from the latter through the 

 raphe toward the substantia reticularis of the opposite side, a.s.g.t., ascending 

 secondary gustatory tract from vagal lobe ; d.s.g.t., descending secondary gusta- 

 tory tract from facial lobe ; sp. V., spinal V tract. 



