PLATE II. 

 Fig. 2 (X D- 



Median section of the liead of a dog, witli the mandible and bonj' septum 

 removed, to show the septal mucosa and its olfactory nerves ; the turbinated 

 part of the septum and its olfactory nerves ; the vomeronasal organ and its 

 innervation by the olfactory and naso-palatine nerves. 



Note the anterior ethmoidal branch of the 5th nerve along the dorsal wall 

 of the septum and its distribution to the septal mucosa. 



