Transition 



or Alleghanian 



Upper Austral 

 or Carolinian 



Attention is called to the fact 

 that the Transition Zone 

 extends up certain river val- 

 leys as indicated on the map. 

 For lists of species breeding 

 in these zones see Appendixt 

 page 341. 



from Greenwich 



69 



LIFE ZONES 



