92 



FRIENDS WORTH KNOWING. 



to exist. Moreover, 

 oceans and high 

 mountain chains lim- 

 it the range of many 

 kinds. Europe and 

 America have scarce- 

 ly any species in 

 common, save of wa- 

 ter-birds and large 

 hawks. Those from 

 the Pacific coast are 

 essentially different 

 from those found in 

 the Mississippi Val- 

 ley. Each district 

 has a set of birds 

 and other animals as 

 well peculiar to its 

 peculiar geography. 

 Another great cir- 

 cumstance, deter- 

 mining the pres- 

 ence or absence of 

 certain birds in the breeding season, is the abundance or 



YELLOW-BREASTED CHATS. 



