118 



FISHES. 



other by a transverse canal, crossing the cranial cavity below 

 the brain. 





£ ® 



a 



o r2 



-S Ph 



^ CO 



O) ji ^H •*" 



^ :z; i^ ^ 



'2 •- •- 

 ■3 -a <t 





:& s .s 



O M oS 



■ f^ ^!^ 



!e^^"ia a 



w ^ 



a ;5 g 



'S ,a ■" S 



+i -e «M S 



•3 5 -M f* 



& "* -51 a 



.ir o 



01 r-J 



£- 'H a 



^ -s -5 





The connection is effected by means of a chain of ossicles 



