80 



SUBKINGDOM VEKTEBKATA. 



Fig. 125. 



like the Horse, it has the metacarpal bones short- 

 ened, so that the 

 heel (c) is brought 

 near the ground. 

 The two u p p e i 

 incisors are pro- 

 longed into tusks, 

 which serve for 

 defence and for 

 ploughing up the 

 ground to obtain 

 succulent roots. 

 The nose is length- 

 ened into a probos- 

 SMeton of Elephant. c | g or trunk con- 



taining several thousand muscles, which permit every 

 conceivable motion ; while a mobile lip at the end is delicate 

 enough to pick up a grain of wheat. This enables the 

 Elephant to reach its food, which it 

 could not do with its mouth, on 



Fig, 



a. Tooth of Asiatic Elephant. 



b. Tooth of African Elephant. 



Section of Elephant's trunk. 



account of its short neck and huge tusks. Water is also 

 drawn into the trunk by suction, and then, the end being 

 inserted into the mouth, discharged down the throat. The 



