62 Bulletin of Laboratories of Dcnison University, [v'oi.xiii 



mot. \/// r. 



\ f.Lm. / 



com.r.l/// 



I r/T^sen. 

 fact a/ lobe "^'^"^^ 



Fig. iS. Horizontal section thiougli the base of the vagal and facial lobes 

 of Minytrema melanops (Raf.). GoLGi method. X 4°. 



The section is slightly oblique, the left side being farther ventral. It passes 

 through the ventral part of the facial and vagal lobes, illustrating a neurone [a) 

 of the intermediate zone of the facial lobe. The dendrites spread throughout 

 the lateral part of the lobe and the neurite passes laterally to enter the substantia 

 reticularis of the oblongata {s.r.), here coming into relation with dendrites of the 

 motor VII nucleus, as shown in the figure, and with other motor nuclei. The 

 section shows the position of the dorsal tip of the motor VII nucleus 

 (n.mot. VII. d.) and the motor VII root springing from it. The motor VII den- 

 drites which are shown ramifying in the substantia reticularis (n.mot. VII.v.) 

 spring from cells of the motor VII nucleus lying ventrally and laterally of those 

 figured and out of the plane of this section. The neurone /' is drawn in from 

 the section lying next ventrad in the same series. 



