THE FOREST AS A PROTECTIVE COVER 



207 



While it is thus quite easy to see how the forest pro- 

 tects the soil, and, by so doing, regulates the flow of 



Fig. 74. How tlie Land i-iodcs al'tt:-!- tlu' AVuuds are gone. 



(Commou sight in Mississippi) 



(After McGee) 



water, the influence of the forest on the climate by 

 making it more temperate and humid is not so plain, 

 and remains still a much-disputed question. 



