88 



ECONOMIC BOTANY OF ALABAMA. 



LIST OF TREES.— Continued. 



Only about 19% of these trees are evergreen, which 

 is a very low proportion for the coastal plain, and proba- 

 bly correlated with the abundance of lime and potash in 

 the soil of this region. The proportion of evergreens 

 seems to be greatest in the eastern half, where the sum- 

 mers are a little wetter; and it probably ranges from 

 about 15% in Sumter County to 25%- in Macon. 



Population, etc. — Several of the oldest towns in the 

 state, most of them county-seats, are located on slightly 

 higher ground just outside of the black belt, but close 

 enough to it to be markets for much of its produce. 

 Among these are Eutaw, Greensboro, Marion, Montgom- 

 ery and Tuskegee on the north, and Livingston, Fort 

 Deposit and Union Springs on the south. This circum- 

 stance, in the absence of statistics for areas smaller 



