796 



HEARING, SMELL, AND TASTE. 



outer rods, finger-like processes project externally. At their bases corre- 

 sponding to the central space are single rows of nucleated cells. On the 



FIG. 191. 



FIG. 192. 



FIG. 191.-Petrcms Bone partly Removed to Show the Membranous Labyrinth in Place. 

 (Breschet.) o, small sac ; 6, its otolith ; c, ductus reunions ; d, large sac or utricle ; e, its otolith ; 

 /, ampullary enlargements on a semicircular tube ; g, semicircular tube. 



FIG. 192. Distribution of Nerves to the Membranous Labyrinth. (Breschet.) a, nerve to the 

 saccule ; b, nerve entering the ampullary enlargement on a semicircular tube ; c, branch of the 

 nerve entering the large sac or utricle. 



FIG. 193. 



Diagram of the mode of Termination of the Auditory Nerve in the Ampullae and Sacculi. 1, 

 wall of the ampulla ; 2, structureless basement-membrane; 3, doubly contoured nerve-fibres; 4, 

 axis-cylinder traversing the basement-membrane ; 5, plexiform union of fine nerve-fibres with 

 interspersed nuclei; 6, fusiform cells, with nucleus and dark fibre in their interior ; 7, supporting 

 cells ; 8, auditory hairs. 



