632 



PASSEEINES. 



This wonderful power, however, is only developed at the 

 sacrifice of another locomotive faculty, for they are bad walkers. 

 With their short limbs, activity on their feet is impossible ; and 

 if by chance they are placed on the ground, with difficulty they 



i — \\ nduw v,Mu\wi (Uiru donate Li ) 



rise again on the wins'. 



On the other hand, their sight is 

 excellent— eqTial to even tliat of the Eagle or Falcon. According 

 to ypalhiuzani, ^vho made numerous experiments on the Swallows^ 



