PUBLIC PARKS AND CITY TREES 



445 



tree is small, and many a citizen would gladly plant trees if he 

 realized the value of trees to himself, to his family, and to the 

 community. Damp cellars and basements are a bugbear to all 

 householders, and nothing lessens the natural dampness of the 

 soil more than trees. Trees absorb moisture through their 

 roots (Fig. 310) which spread far and wide. The removal 

 of moisture from the soil lessens the dampness of cellars, 

 and improves the general condition of the house. Trees are a 

 great comfort in the hot days of summer, because their leaves 



FIG. 310. Tree roots. 



cut off the hot rays of the sun and keep houses and streets 

 cool. In winter when the sun is needed there are no leaves, 

 and the sunshine passes through the bare tree branches and 

 falls upon houses and streets, bringing warmth and cheer. 

 Every citizen should keep in mind the hygienic value of parks 

 and of sidewalk trees, and should insist that they be as much a 

 part of the community as well-paved and well-lighted streets. 



