THE TYPES OF ROCK GARDEN 19 



season, so it is important that the slope should 

 be sufficient to catch and store the rain. If it 

 is intended to conduct a stream through the 

 garden, make sure the outlet will be such as to 

 prevent any risk of the garden suffering from 

 flood. 



The next type is the rocky bank. This, 

 as its name would imply, is a bank of natural 

 rock, and may be the face of a small hill, or 

 form part of a large one. 



It is, in fact, rather similar to the quarry 

 cliff, already described, except that the rock, 

 being as nature left it, will probably have a 

 more gradual slope, and therefore possess the 

 advantage of being easier to clothe. 



The advice as regards surroundings applies 

 equally here. The rock garden should be 

 approached through shrubbery or wild garden, 

 and situated in some open, though not too ex- 

 posed, spot facing south-east, with a back- 

 ground of suitable trees, such as oak, holly, or 

 birch, or any of the Conifer family. 



The rocky knoll is the next and the last of 

 the natural types. It may be a small eminence 

 of rocky ground standing out by itself, or a 



