io6 ROCK GARDENS 



otherwise the soil will be liable to be washed 

 down, especially in time of heavy rains. 



If the rock garden is of the valley type, the 

 stream can be brought beside the central path, 

 first on one side and then on the other, in order 

 to provide places for planting, both in sun and 

 also in shade. The stream should wind about 

 considerably, and not follow the exact Hne of 

 the path. 



The possibilities of variety are endless, though 

 they must depend greatly on the circumstances 

 of each case. While a stream is a good servant, 

 it is a bad master. If provision is not made, 

 great damage may be done by it in time of 

 flood. It should be possible, therefore, to 

 control the volume of water in some way. 

 This can be simply done. Build a wall across 

 the stream at the point where it enters the 

 garden, and in this wall make a hole of such a 

 size that no more than the maximum amount 

 of water conducive to the safety of the garden 

 can come through at a time. As this hole 

 will in all probability not be large enough to 

 carry off all the water when the stream is in 

 flood, a cutting should be made to take away 



