TRE OX AND ITS VAHIETIES. 613 



English parks, also certain large domestic races, such as the 

 Holstein and Friesland breeds. From another fossil species 

 {Bos longifrons Owen) arose the so-called brown cattle of 

 Switzerland, and the "runts" of the Scottish Highlands. 

 Still other domestic races are traced back to another fossil 



c^ 



quaternary species, Bos frontosus Nilsson. Our present 

 races of domestic cattle, however, do not represent a genuine 

 species, but a number of races which have descended from 

 several fossil species ; the name Bos taurus (Fig. 532) is 

 simply, then, a conventional name (Cams' Zoologie). The 

 ■ bison is known to breed with cattle in the Western States, 



