DOMESTICATED ANIMALS 



their comrades are moving, but they never strike against 

 them. 



The admirable sense of interval which the wild birds ex- 

 hibit in their flight is to be seen also when they move over the 

 surface of the water, where the fleet of living forms is always 



An Eider Colony 



so arranged that each individual does not interfere with its 

 neighbor. I recall with much pleasure an occasion when, from 

 a ship becalmed in a thick fog off the southern shore of Lab- 

 rador, within sound of the breakers, I undertook to find 

 something about the lay of the land and the chance of har- 

 borage by paddling in a small boat toward the shore. I had 

 hardly lost sight of the ship when my boat glided into an 

 assemblage of eider ducks, where the mothers, with their 



