THE BIRDS' COMPASS 



flying through a fog, describe the circumstance. 

 Have you ever had a bird fly aboard your steamer 

 when at sea? What was the nearest land at the 

 time? What was the season of the year? Where 

 do you think the bird had started from and was 

 bound for? Do you think it was on or off its 

 course? 



Describe some of the experiments of Professor 

 Watson. Do they indicate the existence of a sense 

 of direction in birds? Do you know of any cases 

 of domestic animals finding their way home? Had 

 they been over the route before? By what sense 

 or senses were they guided? 



Define the difference between the "homing in- 

 stinct" and the "sense of direction." 



