y 7 ] Canadian 



Transition 



or Alleghanian 



□ Upper Austral 

 or Carolinian 



Attention ia 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 Appendix, 

 page 341. 



Longitude West 



from Greenwich 



LIFE ZONES 



