Chap. XLL] 



Fig. 163. From a Vertical Section through the Cochlea of a Guinea- 

 pig's Ear, seen in the long axis of the Modiolus. 



<f., The scala vestibuli : 6, the scala tympani ; c, the scala media; d, the membrana 

 tectoria ; e, the cells of Claudius : /, the upper outer angle- of the scala media : 

 ff, the region of the outer hair cells on the membrana basilaris ; A, the mera- 

 l)rane of Ileissner ; i. the epithelium lininp the sulcus BpiraliB (internus) \j, the 

 tunnel of Corti's arch; k the stria vascularis; I, the lipnmentura spirale; 

 ?)? the cripta spiralis: n, the nerve-fib ree in the lamina spiralis ossea ; o, the 

 ganBlion spirale ; p, the nerve-fibres in the niodioliis ; q, channels in bone con- 

 taining Ijlood-vessels ; r, masses of bone in the uiodlolua ; , the bony capsule. 

 (Atlas.) 



