150 



ROLLO E. McCOTTER 



that the vomeronasal nerves are the axis cyhnder processes of 

 the sense cells of the mucosa of the vomeronasal organ and 

 arise in the same manner as the olfactory nerve filaments from 

 the sense cells of the olfactory mucosa. It is quite evident, 

 therefore, that these clumps of ganglion cells belong to the nervus 



GflOfll'Oo cells 



5hedtb cells 



nunr; 



N.' terrr)i na\i^ 



GflOdlioo cells (N iermtna\'\s) 



• N. voir)eron(33cilis ^ 



Fig. 3 A camera lucida drawing of a favorable portion of the nervus ter- 

 minalis of the cat proximal to its ganglion to show the characteristic distribu- 

 tion of the nerve cells. X 200. 



Fig. 4 A camera lucida drawing of one of the filaments of the vomeronasal 

 nerves of the cat, taken not far from its origin from the vomeronasal organ. 

 The clump of ganglion cells attached to it indicates that fibers of the nervus 

 terminalis extend into this region. X 200. 



terminalis, the filaments of which extend into the nasal cavity 

 along with several filaments of the vomeronasal nerves and appar- 

 ently terminate within or very close to the vomeronasal organ. 

 From the foregoing description it is evident that there is nor- 

 mally present in the adult dog and cat a ganglionated nerve 



