102 LANDSCAPE-GARDENING 



river, where crossed by bridges and bordered by 

 streets, becomes like a lake in having comparatively 

 still water which will reflect the arches and the foliage 

 flanking the abutments and covering the earth em- 

 bankments or hanging over the walls that stretch 

 from bridge to bridge. 



In some ways, a dam below a city is preferable 

 to one above. It saves the expense of a canal and 

 the bridges that span it. It allows the bordering 

 streets to lie close to the embankment where they 

 will command the best views. It provides boating 

 close at hand where employees and others could get 

 delightful exercise even during the brief hour or so 

 allowed for luncheon. It would also furnish a place 

 for swimming. Since the level of the water would 

 be reasonably stationary, the effect of the overhanging 

 branches of groups of trees and the bordering foliage 

 of shrubs and vines would be most satisfactory. 



There are, to be sure, waterfalls, sometimes near 

 cities, where scenic value far outweighs that of any 

 power that may be developed. Such value should 

 be preserved, a thing most difficult to accomplish, 

 because scenic value does not put dollars into the 

 pockets of those who most appreciate it. 



The urgent plea which this book would make is 



