264 



FIRST YEAR SCIENCE 



Slopes from which the forests have been removed become 

 an easy prey to the forces of erosion, and the soil which 

 for thousands of years has been accumulating may be 

 swept away by the rainfall of a few seasons, leaving the 

 slopes bare of soil and devoid of vegetable life. Thus the 



BAD FORESTRY. 

 The hillside was stripped, leaving it a prey to erosion. 



sites of valuable forests, which by proper care might have 

 been continual wealth producers, are rendered nearly 

 profitless deserts. 



The harmfulness, however, does not stop here. The 

 rain that falls upon these slopes, and which was formerly 

 retained by the roots and vegetation, so that it slowly 

 crept downward into the valleys and streams, no.w runs 

 off quickly, flooding the rivers and doing damage to 

 regions at a distance. Streams which formerly varied 



