PLATE XXIV. 



FIG. 175. 



FIG. 176. 





Olfactory cells. 



Section of Cornea. 



FIG. 177. 



FIG. 179. 



Connective-tissue and nerve-elements of Retina. 

 Showing rods and cones. 



Section of Cochlea: v, seal a vestibuli; T, scala 

 tympani; c, canal of Cochlea; R, Reissner's mem- 

 brane, attached at a to the habenula sulcata; 6, 

 connective-tissue layer ; c, organ of Corti. 



FIG. 178. 



FIG. 180. 



Refractive bodies in the rods and cones. 



FIG. 181. 



Corti's organ, from above. 



Section of Corti's organ. 



