MAGNOLIA FAMILY 



" The picture of the flight and dispersal of these forests, and 

 of their struggle to find and adjust themselves to other homes, 

 is second in interest to that of no other migration. A single 



Chart Showing the Development of Vegetation during the Geological Ages. 



tree is helpless before such a force as an advancing glacier, 

 since a tree alone cannot migrate. But a forest of trees can. 

 'Ireescan "take to the woods" when they can do nothing 



8 



