198 THE MIGRATION OF HIRUNDO RUSTIC A. 



you have never before meditated on a small bird's life, you 

 will acquire a new notion : that you harm yourself and your 

 children if you injure this true small friend. You will then 

 recognize in yourself a protector not only of the Swallow 

 but of all useful birds, which were sent into the world to do 

 good to mankind, and are therefore not to be killed for 

 vanity's sake. 



