WATER IN THE GARDEN 189 



series of ponds must be provided for, and when 

 the garden slopes toward the house the most 

 convenient way is to carry it into a gully in 



Fig. 52. Soak-away drain 



connection with the house drainage system. 

 When the slope is in a contrary direction the 

 best expedient is to make a "soak-away" 

 drain, as shown in the illustration (Fig. 52). 

 This is merely a pit sunk in the soil and filled 

 with rubble, into which the overflow pipe is 

 conducted. 



The ponds must be constructed with an 

 impervious bottom, say by the use of cement 

 or concrete. 



