WHERE FORESTS MAY BE GROWN 



259 



435. Absolute forest land, — a cypress swamp. 



are prevented and the flow of navigable streams regulated; 

 protection of wild life; tempering of physical conditions 

 by regulation 

 of water -flow in 

 streams and lakes 

 and elsewhere 

 and by checking 

 the sweep of 

 winds; providing 

 an attractive 

 cover for large 

 areas of the sur- 

 face of the earth, 

 in which the 

 people may find 

 recreation and 

 help. Areas that 

 can be utilized for no other crop than forest are said to be 

 absolute forest land (Figs. 434, 435) ; and much land that is 

 available to some extent for pasture or other croppage 

 may still be most profitable in forests. (Fig. 436.) Very 



special forests 



(Fig. 437) may 

 be grown on 

 arable lands. 

 In the general 

 scheme or plan 

 of a farm, a 

 forest or wood- 

 lot may be an 

 essential part; 

 and likewise, in 

 a national 

 domain large 

 forest areas are 



_'■*&* ~2*t 



436. Land that may be profitably used for forestry purposes. 



