80 



METHODS OF SrB.IF.rTION. 



The Peruviiius have the Ihiinn. or alpaca, which, accus- 

 tomed to climbing the mountain.s, carries heavy burdens 

 over the Andes, and furnishes the people with milk for 

 their children ;ind wool for their clothing, as well as flesh 

 for food. The ])eoi)le of the desert have the camel, or drom- 

 edarv, for crossing the arid, sandy plains. Not only will 



Fig. 83. — A good model of Draught Horse. 



he carry a heavy burden patiently, but carries Avithin his 

 body a supply of water to last him a week. 



Now we see the same principle of adaptation to the va- 

 rious wants of man shown to a wonderful degree in the 

 horse, by the great modifications in size, strength, and en- 

 durance. For drawing heavy loads we have the coarse- 

 grained, heavy, square-shouldered, patient cart-horse. For 

 quick, active exertion, the thoroughbred, or lithe, active 

 race-horse, with oblique shoulders, deep chest, dense text- 



