58 



A PRIMER OF FORKSTRY. 



land, whether flat, hilly. or mountainous, and the Char- 

 acter of the surface covering. These an 1 all connected 

 with the temperature in a special manner. Lastly, it 

 is affected l>y the winds and the moisture of the atmos- 

 phere. Now. it is clear that of all these factors of 

 climate the forest can influence only the wind, the 

 moisture, and the >urface covering; hut heat (with 



KM;. 3 ( J. The fon-st cover. 



which the surface covering has so much to do), mois- 

 ture. and wind are the three things which change when 

 We siy that the weather changes. The>e are just the 

 points where a change due to the forest would have 

 most etl'ect on daily life. The intluence of the forest 

 i- exerted upon them in two ways: 



Fiist. The fore-t cover intercept^ the rain and the 

 rays of the >un. eheek* the movement <>f the air. and 

 reduce> the radiation of heat at 



