Fig. 43 A parasagittal section through the left lateral border of the medulla 

 oblongata, cutting the rootlets of the vagus nerve. Four groups of rootlets are 

 shown somewhat indistinctly, corresponding to the roots of the four branchial 

 nerves. X25. 



Fig. 44 A horizontal section through the ear capsules and parachordal region 

 of the cranium, showing five occipital nerves and the segmental arrangement of 

 the four vagal branchial ganglia. A composite of three sections. X 15. 



363 



