NERVUS FACIALIS OF ALBINO MOUSE 



91 



nuclei and the spinal root of the trigeminal nerve into the nu- 

 cleus of the latter. In this the fibers become scattered, and be- 

 cause of the intricate complex of fibers running in all directions 

 at this point, they cannot be followed farther. 



The efferent root of the nervus intermedins is most conspicuous 

 in sagittal sections where it, too, has an oblique course across 

 the surface of the motor part of the facial nerve (figs. 1 and 2 



M.Ten.Ti^r 



Fig. 3 Sagittal section through the nervus facialis and the ganglion geniculi. 

 60 M lateral to figure 2. X 166. 



N.Int.e.). Followed centrally from this position, it passes pos- 

 teriorly and medially for a short distance across the surface of 

 the pons. At the ventral edge of the spinal root of the trigemi- 

 nal nerve it enters the pons and passes dorsally and medially, 

 parallel with, but more lateral and posterior to the emerging 

 motor part of the facial nerve. At the level of the ascending 

 part of the facial nerve the compact bundle becomes broken up 

 and the fibers scattered, so that they cannot be followed farther. 



