106 



ECONOMIC BOTANY OF ALABAMA. 



LIST OF TREES.— Continued. 



About 44% of these trees are evergreen, which is 

 rather a high figure for such a calcareous region. 



Economic features. — Notwithstanding the fertility of 

 the soil, probably at least two-thirds of the area is still 

 wooded, partly because the roughness of the topography 

 interferes somewhat with agricultural operations, and 

 apparently also because this region is considered less 

 salubrious than most of the non-calcareous parts of the 



