244 THE SHEEP AND ITS COUSINS 



of March 30, 191 2, the four-horned piebald breed 

 is the result of crossing one or more of the small 

 hairy black, or piebald, and sometimes four-horned 

 native African breeds with a woolly European 

 strain ; and it is not a little noteworthy in connec- 

 tion with this theory that the throat of the ram 

 shown in pi. xviii. fig. i has a thick fringe recall- 

 ing the longer one of the black Baluba maned 

 ram. This would account for the replacement of 

 the hairy by a woolly coat, and the great increase 

 not only in the size of the body, but likewise in 

 that of the horns. When or where this presumed 

 crossing first took place, can only be guessed. If 

 it took place in Europe, the hybrid product may 

 have been exported to the Cape, and, after furnish- 

 ing the source of the Ingleborough flock — presum- 

 ing this to have been of the modern English type 

 — have eventually died out in that part of the 

 world. Possibly, moreover, such a crossing may 

 have been effected independently on more than one 

 occasion. 



