138 



PLANT BIOLOGY 



remnants of our once vast forest resources, a public sentiment 

 must be thoroughly aroused which will compel the passage 

 and enforcement of conservation laws. 



145. Necessity for reforesting and for forest protection. 



Surely, enough has been said to show the necessity for forest 



protection. For- 

 tunately, laws 

 are now being 

 passed that will 

 enable the Na- 

 tional and some 

 of the State gov- 

 ernments to ac- 

 quire large tracts 

 of land for forest 

 reservations. In 

 many States 

 these forest areas 

 will protect the 

 sources of large 

 streams. There 

 is great need of 

 trained experts 

 who will go 

 through the for- 

 ests, mark the 

 trees which are 

 mature enough 



to be cut, and decide which way they should fall to do 

 the least damage to the younger growth. Again, large areas 

 now devastated should be replanted with young forest trees, 

 and this is also being done to a considerable extent. In many 



FIG. 70. Planting young trees on hillsides. 



