262 The Farm Woodlot 



of the group. Here again the trees should be " clean," 

 but otherwise the nature of the fruit is immaterial. Rapid- 

 ity of growth is not essential, for the clump presents an 

 attractive appearance at all stages. 



FIG. 58. Windbreak of willow showing dense foliage to the ground. 



In the formation of a screen, thick limbs growing down 

 to the ground, a dense foliage, the ability to grow in a close 

 group and rapid growth are the qualities to be desired. 

 Such trees as the white pine or the basswood might give 

 promise for a time, but the effect would soon be spoiled. 

 As the trees grow older, they would lose their lower limbs, 

 and the screen would soon be full of openings. Willows, 



