500 



KUMINANTS. 



communication whereby many Eastern nations separated from each 

 other by burning deserts carry on their commerce : his strength and 

 capability of endm-ing prolonged abstinence, both from food and 

 water, alone render this intercourse possible ; and in few instances is 

 the beneficence of the Creator more conspicuous than in the con- 



FlG. 426. — ARABIAN CAMEL. 



struction of these invaluable helpmates of the human race. To 

 enable him to move with facility over a soft sandy surface, his 

 feet are broad and cushion-shaped, and his limbs long; he picks 

 the thorny bushes as he passes, without lialting, and jorovided with 



-WATER-CELLS OF THE CAJIEL. 



un extraordinary apparatus in his stomach in which he carries water 

 (Fig. 427 , he resists the burning heat for ten or even twelve days, 



