DISSECTION OP THE BRAIN, OE ENCBPHALON. 263 



cates the outer limit of the inferior pyramid. These roots are in series 

 with the inferior roots of the spinal nerves ; and sometimes there is also 

 present a superior root, in series with the superior roots of the same 

 nerves, and provided with a minute ganglion. These roots arise from 

 nerve cells of the medulla. The roots of the nerve perforate the dura 

 mater, and unite in emerging from the cranium by the condyloid 

 foramen. 



