22 
TREES AS GOOD CITIZENS 
so unfortunate as to be denied the grateful shade of tree- 
lined thoroughfares. 
In addition there is a different stimulus produced on 
the nervous system by the various colors. The effect of 
green is soothing, so that foliage masses tend to counteract 
the irritating effect of many of the colors common in city 
streets, especially that of red brick buildings. 
What has been said for trees in the city holds equally 
well for the open country, although, to those familiar 
with country conditions in the eastern United States 
a country lacking in trees can hardly be realized. In nat¬ 
urally treeless regions, tree masses are also valuable in 
protecting small areas from the sweep of the drying 
winds and making possible the growing of plants, not 
otherwise practicable, as well as making living conditions 
more comfortable. 
From every point of view, shade trees are of vast im¬ 
portance to the dweller in city, town or country. In 
beauty, in comfort and in public health the shade tree is 
the indispensable and never failing friend of man. 
