THE EAR WE CANNOT SEE 



97 



farthest off. Also test each of your ears separately. Cover 

 one ear while you listen with the other, and decide which 

 hears the better. You may find a difference between them. 



A CUT THROUGH THE RIGHT EAR 



a, the tube ; b, the ear drum ; <:, the ear bones ; d, the snail shell ; 

 e, the nerve of hearing 



If the other children can hear the watch farther away 

 than you can hear it, or if one of your ears hears better 

 than the other, you should tell your father and he should 

 take you to a doctor to be examined. Very likely the 

 doctor will find out what the trouble is and cure you. 



