9 o PRIMARY FACTORS OF ORGANIC EVOLUTION. 



TO 





8 



4 



E 



CD 



P 

 P9 



-* 



I 



>- 

 W 

 



f 



n> 

 o 



E. 



I 

 o 



Ha 



o 



a 



8- 



O 



s 



re 



re 



