ORIGIN OF DOMESTICATED ANIMALS 



229 



musimon). These are all horned sheep from which such a breed 

 as the Merino might have descended with no more change than 

 is often effected in domestication. 



From these wild types the species shade off into the blue 

 sheep of Tibet and the Barbary sheep, with its wealth of long 

 hair on its throat and legs, and its horselike tail, but standing 

 between the sheep and the goat, as the musk ox stands between 



Fig. 45. Domestication complete. A wild mountain animal brought to the 

 lowlands and ready to follow the call of man 



the cattle and the sheep. From here on are a sheer multitude 

 of more or less distantly related species, — goats, ibex, markhor, 

 tahr, nilgiri, goral, serow, chamois, eland, kudu, antelope, nyl- 

 ghau, gemsbok, gazelle, springbok, puku, klipspringer, llama, 

 alpaca, and scores of others down to the gnu, or wild beast with 

 the horn of a musk ox, the head and mane of a bison, the tail 

 of a horse, and body and legs midway between the horse and 

 the cow. 



