28o 



GENERA L ORNITHOL OGY 



the vestikdar cavity ; this division of the cochlea is therefore the 

 scala vestibtdi. The marble startino- from the other side of the in- 





so IS :g h3 



CO ^ o .ii 22 



fundibulum would roll along the under stairway, and if nothing 

 stopped the Avay, would fall through the fenestra rotunda into the 



