14 ROCK GARDENS 



In the first section, the Natural, there are 

 three types — the old quarry, the rocky bank, 

 and the rocky knoll. 



The second section is more varied, and in it 

 may be included the sunken garden, the old 

 gravel-pit, the bank, the knoll, the rocky bed, 

 and the very large rock garden. 



The old quarry^ a favourite and very 

 charming site for a rock garden, and one that 

 has many points to recommend it, is hard to 

 deal with owing to the difficulty of adorning 

 the large masses of perpendicular rocks, which, 

 although capable of giving very striking effects 

 with their cataract of flower and foliage, require 

 years of growth even under the most favour- 

 able conditions. It usually takes one of four 

 forms, which may be called the amphitheatre, 

 the horseshoe, the cliff, and the valley. 



First let us note the amphitheatre^ a very 

 uncommon type. This formation, as the name 

 would imply, is a hollow almost or entirely 

 surrounded by rocky sides, and will seldom be 

 a really suitable site. Most probably it will be 

 found very difficult to drain thoroughly, and 

 even were this done, there would still be that 



