190 GARDEN PLANNING 



Fig. 53 shows both the mode of forming 

 the bottom and of building up the sides, and 

 calls for little by way of description. If rock 

 or rubble sides are used, as in D, they 

 must be built in cement, care being taken to 

 make the joints watertight. The floor may 

 then be made with six or eight inches of con- 

 crete, faced with cement. The surface should 

 not be finished to a dead level, but should have 



Fig. 53. — Ponds 



a slight fall toward the outlet, to facilitate 

 running off the water. 



If the pond sides are built of cement, C 

 must be followed, making the edges battered, 

 and finishing them neatly at top with a rounded 

 nosing, which can be done with a former of 



