THE FROXTAL SINEUS. 



145 



Tlie head of the ox may be divided into two parts — the skull and 

 the face. The cut, page 144, represents a section of both. 



The cranium or skull, that portion of the head which contains and 

 protects the brain, is composed of eight bones : two frontals e, p. 143, 

 and b, p. i 44 ; one parietal, h, p. 143 ; two temporals, g, p. 143, and/, 

 p. 144 ; one occipital, i, p. 143 ; and d and I, p. 144 ; one ethmoid, n, 

 and r, p. 144 ; and one sphenoid, m, p. 144. 



The frontal bones extend from the nose to the superior ridge of the 

 skull ; presenting a flattened but irregular surface, and entirely bare 

 of muscular or fleshy covering. 





•^•S.GILBERT 

 HEAD OF A SHORT-HORX BULL 



THE FROXTAL BONES. 



Nattire has given to most cattle a formidable weapon of offence, 

 the horn. To be effective, it must be securely based ; and it could 

 only be so, or it could best be so, by this expanse of frontal bone. 

 From this bone the horn springs, and it is in fact a continuation of 

 the frontal, (see a, p. 144.) The forehead of the bull is considerably 

 shorter and broader than that of the cow or the ox in every breed. 

 This shortness and breadth of forehead is not only characteristic of 

 diflference of sex, but it is regarded, and properly ^^ as an essential 



