PLATE XVII. 



Figs. 54-55a. 



Fig. 54 (x 50). 



Vomeronasal organ in an embryo kitten. 



Section tbrougli the ceplialic region of the organ, the cartilaginous capsule 

 entirely enclosing it. Two olfactory cells are shown in the upper part of the 

 lining of the epithelium. 



Figs. 54a, 55a (X 488). 



Olfactory cells of the vomeronasal organ, with varicose axones. The cell 

 with the longest axone was drawn from a different region of the same organ 

 (enclosing lines indicate the thickness of the epithelium). 



Fig. 55 (X 30). 



Section through the middle of the vomeronasal organ ; cartilagenous capsule 

 not entire. Note the difference in thickness of the median and lateral 

 epithelium ; an olfactory cell is shown in the epithelium of the median wall. 



