2l6 



EASTERN ETHIOPIA 



XVII 



entering the windpipe, although the mouth may be 

 filled with it. 



When swimming, the body of the crocodile is sub- 

 merged ; the parts which remain above the water are the 

 snout and upper parts of the head, with the eyes and 

 ear-lids. The powerful tail is a very efficient swimming 

 organ. If alarmed when swimming the crocodile sinks 

 and may remain submerged a long time. The keeper of 

 the reptile house at tfhe London " Zoo" assures me that 

 these reptiles will lie completely submerged in the tank 



Teeth of a Crocodile. 



A. An old worn-out tooth about to be shed. 



B. A tooth in use with its successor lying in the 



pulp chamber. 



C. A tooth in its prime. 



for half an hour. Visitors often call his attention to a 

 crocodile lying immovable at the bottom of the tank be- 

 lieving it to be dead, and will not be satisfied until he has 

 roused it with a rod. One crocodile has lived in the 

 Zoological Gardens thirty-four years. 



The crocodile is well furnished with teeth : they are 

 implanted in deep sockets along the margins of the 

 upper and lower jaws. The teeth vary in shape and i,n 

 number in different species of crocodiles, but they are 



