BEHAVIOUR 201 



as to be negligible. The visual sense, though not as poor as was generally 

 believed, is nevertheless not keen enough to be considered very important 

 either. Practically nothing is known about their sense of touch, and their 

 taste, like that of all other animals, is restricted to distinguishing between 

 different kinds of food. The only other sense is hearing, and in fact it 

 appears that Cetaceans, like bats, have a very highly developed ear, 

 which must be considered their most important sense organ. The next 

 chapter is, therefore, devoted to its discussion in detail. 



