76 CLOTHING OP ANIMALS, 



weather comes on, the dark spots disappear, and 

 its plumage is left of a pure white : in spring, the 

 ashy colour returns again. The guillemot, a water- 

 bird which frequents our coasts, during summer 

 is quite black, excepting a single white spot on its 

 wings. In the winter, the bird becomes of a dus- 

 ky-white colour; and when seen in situations still 

 colder, it is perfectly white. V 



Questions. 



What difference is found amongst animals as to their 

 clothing ? 



Name some examples. 



What change is observable in the horse in summer and 

 winter 1 



Why are animals which yield furs sought for only in 

 winter 1 



What other change takes place in the clothing of animals ? 



Mention the names of some animals which become white. 



Is the same thing observed amongst birds 1 



Name some instances. 



