RUMINANT QUADRUPEDS. 



515 



those which regulate the growth of turbinated 

 shells. The horns of the ox and of the an- 



218 



A 



D 



telope tribes are formed of longer and more 

 continuous fibres, which are closely compacted 

 together, and exhibit very distinctly the series 

 of hollow cones of which they are composed. 



The horns of the Rhinoceros, both of the one 

 and two horned species, grow from the integu- 

 ment covering the nose, to which they adhere 

 without having any connexion with the subja- 

 cent bones. They have a pyramidal shape, 

 and are composed of parallel fibres, resembling 



