PLATE XV. 

 Figs. 39-45. 

 Fig. 39 (X 450). 

 Olfactory epithelium of the cat; formaldehyde dissociation. 



Fig. 40 (X 450). 

 Isolated sustentacular cells of the cat. 



Fig. 41 (x 300). 

 Duct of Bowman's gland of the cat. Golgi stain. 



Fig. 42 (x 450). 

 Olfactory epithelium of an embryo dog ; gold chloride stain. 



Fig. 43 (X 450). 

 Ciliated cells from the respiratory epithelium of the nose of the cat. 



Figs. 44, 45 (X 450). 

 Free nerve terminations of the 5th nerve in the nasal mucosa of the cat. 



• Fig. 44. 



In the respiratory region. 



Fig. 45. 

 In olfactory region. 



