56 



AMERICAN MUSEUM GUIDE LEAFLETS 



are so large that the crowns of the remaining trees nil] nol meet and .hade 

 the ground within a short time. 



(2). On rocky land with thin soil little valuable for agriculture. 



(3). In wet places where no other crops will grow (fig. |s,. 

 ... On hillsides too steep to plow (Fig. I especially if these slopes 

 adjoin fertile fields and are subjecl to washing i Fig. 5 .. If a foresl in such 



FIG. 48. DISMAL SWAMP. SHOWING -CYPRESS KNEES" 



The rich soil of swamp lands supports luxuriant growth. Giant cypress trees 

 have been known m measure 40 feet in circumference. 



A problem of the immediate future: to drain swamplands north and south, plam 

 forests, and incidentally better health conditions 



