THE OX AND ITS VARIETIES. 



613 



English parks, also certain large domestic races, sucli 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 



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 taiirus (Fig. 533) is 

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

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



