PRACTICAL CARP CULTURE. 



(;. Figure of 

 left drum or mid- 

 dle car of mau 

 \ ievved from the 

 front. 



0. Opening in 

 l)oju- (closed by a 

 membrane) lead- 

 ing to inner ear. 



S. Stirrup- bone 

 in place on tin 

 membrane. 



1. Middle 

 small boiie,(tHCM) 



in. First small 

 tione (matieaa) in 

 contact with 

 drumhead. 



d. Drumhead 

 or membrane sep- 

 arating middle 

 from outer ear. 



t. Tube lead- 

 ing to outside. 



D. Figure of 1 lie air bladder of a carp 10 inches long (life-size) with second and. third 

 vertebrae. 



a. Air-bladder. 



V2. Second vertebra*. 



VS. Third vertebra-. 



IS. c. Spinal chord. 



P. Process from third vertebra* supporting air-bladder. 



O. Small bone connected with air-bladder and leading to back of skull. 



!:. Figure! of the left labyrinth or inner ear of man as 

 seen from the outside. (Sharpey & Quain.) 

 a. Anterior semicircular canal. 

 I'. Posterior " 

 e. Exterior " 

 v. Vestibule, 

 c. Cochlea or spinal portion. 



F. Section of the left 

 us seen from the outside. 



labyrinth or inner ear of man 



a. Anterier semicircular canal. 



p. Posterior " 



v. Exterior " 



v. Vestibule. 



(... Cochlea. 



O. Opening to drum or middle ear. 



