NERVUS TERMINALIS: MAMMALS 61 



of the bundle just noted, other strands were observed in the sep- 

 tum which also appeared to form a part of the terminalis plexus. 

 Returning to the other intracranial strands which were noted 

 distally of the ganglion terminale, the most dorsal one was 

 somewhat torn in dissection, but appeared to have passed be- 

 tween the olfactory bulb and the cerebral hemisphere. The re- 

 maining fibers appear to pass through the cribrifomi plate in 

 company with bundles of olfactory fibres, ventral to the vomero- 

 nasal foramen. Such fibers could not be found distally of the 

 plate. Possibly the strands in the septum which were noted in 

 connection with those which emerge in company with the ner- 

 vus vomeronasalis are distal continuations of the strands now 

 under discussion. The connections in the bony plate might 

 easily have been inadvertently injured to such an extent that 

 the strands immediately distal to the plate were completely 

 destroyed. 



4. The nervus terminalis in other mammals 



The observations of the nervus tenuinalis of the dog, squirrel, 

 and human, and in embryos of the pig, sheep, and rabbit, were 

 less extended than those described in the preceding pages. So 

 far as they were carried, they agreed with the findings in the 

 other animals studied. The nerve was found in the typical re- 

 lation to the vomeronasal bundles, and passes through the 

 cribriform plate in company with these. 



Only one ganglion was found in the dog. This is situated 

 near the vomeronasal nerve, and is long and fusifonn (fig. 49). 

 In the squirrel also (not figured) one large ganglion was present 

 at the point where the main trunk of the terminalis splits into 

 strands similar to those found in the cat and the horse, which 

 accompany the larger bundles of the vomeronasal nerve through 

 the bony plate. A number of smaller strands, which appeared 

 to correspond with the intracranial plexus found in the other 

 animals, were observed. It may be noted that in the squirrel 

 the accessory olfactory bulb lies on the dorsolateral side of the 

 bulbus olfactorius so as to be invisible when the brain is viewed 

 from the medial side. 



