116 



J. B. JOHNSTON 







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Fig. o Pig, 16 mm. Two transverse sections of the rostral part of the hemi- 

 spheres. In A the root of the nervus terminalis is seen as a small collection of 

 cells lying within the brain beneath the fissura prima and above the tuberculum 

 olfactorium. In B the ganglion terminals is shown where it comes in contact 

 with the root of the olfactory nerve. The ganglion cells are separated from 

 the neurilemma cells of the olfactory nerve by a small blood vessel. The gan- 

 glion terminale is unusually large in this specimen. 



Fig. 6 Pig, 53 mm. Two transverse sections through the hemispheres show- 

 ing the root and ganglion of the nervus terminalis. Note that the root enters 

 the brain between the primordium hippocampi and the tuberculum olfactorium. 



