CHAP. XIII 



THE SKELETON 



231 



is plugged with cartilage against which abuts the inner end 

 of the columella of the ear. 



In the ventral side of the skull is a large bone, the J>ara- 

 basal, oxparasphenoidy which is in the shape of a dagger with- 



out any handle ; the lateral portions underlie the two prootics. 

 The fronto-parietal bones form most of the roof of the 



