OF i in: (i 





iiwua tis*> 



ll 1 tlirr.-. 



com., ain riinn 



. to the otln i n,-r\,-> an.l hlood- 



- \\hi.-li an- li>trilmt.-.| :nirir-iil ,: 



l-'inally, a l;i>t allt-iatiou takes plao- in tin- cai -tilagi!. 



Fig . 282. Diagram matic repreicnUtion of the whole organ of hearing in Mi 

 Outer enr: .\f, M, ;iuiii]e; Mae, meat us auditoriua ext. 



t\ti: Hi ar: Cf, Ct, cavum iU wall; J 



ap]u . is drawn as a simple ni i plao of th 



: responds to the stapedial plate, which closes th 



:..'- i- i 

 ...! " 

 .. |H : -- 



hii ; n l , ita opening into h phuynz ; (T t ltewlL IWMT mri be bony labyrinth 

 (A'/.. A .iway ; S, saoculus ; a, 6. al u.. uibraiuus and 



osseous semicircular canals ; S.f, D.t, saooos and ducttu eudolymphaticus, of which the 

 two anus ; Cp, cavum peril ymphationm ; CV, eanalis renniena ; 

 K-mbranoos cochlea, which produces at -f the restibolar ccecum ; Con', bony cochlea ; 

 i St, scala vestibuli and scala tympini, which at * communicate with each oil 

 ruiml.t t-iia::i ,!> i. which arises from the scala tympani 



. The horiaontal semicircular canal is not specially designated, 

 but is easily recognisable. 



I'V it> l>ccoiniiiL r cMiiMTtr.l into bone-- 



(.-iti< ation. Tliu- tin* iiicinlir.inou> anais are enclosed 



in the l>ony si'inii'iivtil.-ir ranai 99 " anl / A"/,i. \\hii-h are 



enlanjrtl n-].r.).luctions of tk 



1 nv>po!nlin: changes (fig. 282) are also av 

 [> : riphory of the utiu'iilti> ami sacvulu- (>';, ami U-ail to | 

 of (1) a pcrilynipl hirli i> in coininu uith 



