CLASS MAMMALIA. 



215 



The Hog's skull is adapted to rooting in the ground 

 for food. The lower canines project nearly horizontally, 



FIG. 372. 



Sus scro'fa. Wild Boar. ( jV.) 



and being sharpened by friction upon the upper, con- 

 stitute formidable weapons. 



FIG. 374. 



FIG. 373. 



Skull of Hog. 



The Wild Boar of the Old World is the parent of the 

 domestic varieties and of the wild hogs of the Xew. 

 The Babirusa (ba bi roo'sa) found in Borneo, has its long 



