ELEPHANTS. 



377 



FIG. 417. WART-HOG, INDIAN RHINOCEROS, AND RIVER- HORSE. 



ORDER PACHYDERMATA.* 



The relationship between the whales and the elephant is not 

 very remote : the bulky head, the giant size, the thick and naked 

 skin, the prolonged tusks, and the straggling irregularity of the 

 teeth, are alike indicative of the aquatic Cetaceans and of the 

 marsh-loving Pachyderms that next offer themselves to our notice. 



These animals are remarkable for the thickness of their skin, 

 and for having their toes enclosed in hoofs. They have a single 

 stomach, and do not chew the cud. This Order includes the largest 

 terrestrial Mammalia at present in existence. Except the horse, 

 they are all clumsy in their shape, and have a heavy, indolent gait. 

 They generally live together in herds, and frequent marshy situa- 

 tions, where they find vegetation and roots suited to their wants, 

 and where they can wallow in the mud. Although they resemble 

 each other in the general features of their economy, they are cis- 



, pachys, thick; 5epfj.a, derma, the skin : thick-skinned. 



