THE BOG GARDEN 105 



supply, which should be brought by the easiest 

 and most direct route possible, and care must 

 be taken that the overflow can be readily 

 disposed of. Fortunate indeed are those people 

 who have a stream, no matter how small, run- 

 ning through their garden, or are able to 

 conduct one to it. My advice is to have one, 

 if it is at all feasible, for it is the means of 

 adding enormously to the charm of the garden 

 and of considerably extending the range of 

 plants possible to cultivate. If the rock garden 

 is of either the hollow or hill types, the stream 

 may be brought down the face of the rock- 

 work in a series of little cascades into a pool 

 at the foot. The ground on either side should 

 slope gently towards its course. 



The banks of the stream, at least so much of 

 them as are affected by the water, should be 

 made of fairly large rocks to prevent its en- 

 croaching or washing them away. These 

 rocks, it is scarcely necessary to say, should not 

 be placed in the form of a straight wall ; the 

 stream should be made to wind about, for it 

 will then look so much better. The bottom 

 of the stream should be paved with flat stones, 



