‘The Small Rock-Garden. 133 
strong-growing and showy-flowering plants as the 
varieties of Aubrietia and Phlox subulata, together 
with the Mossy Saxifrages, Antennaria tomentosa, 
Armeria laucheana, Campanula carpatica pelviformis 
and c. turbinata “Isabel,” C. portenschlagiana bavarica, 
Helianthemum vulgare vars. “Ball of Fire,” Crof- 
tianum, and tomentosum, Iberis correzfolia, etc. A 
separate bed for partial shade should also be provided 
on the south, but with its declivity towards the north. 
Indeed, when the natural drainage is good, or 
artificial drainage can be arranged for, and where 
stone is sufficiently plentiful, a considerable hollow 
may be sunk in some part of the rock-garden, 
preferably on the south, which will both afford a large 
supply of soil towards the mounds to be constructed, 
and will also take the surface drainage of any rockery 
walks or tracks made to trend down towards it, and 
thus assist to provide a fitting home for shade- and 
moisture-loving plants even on the driest soils, 
especially if its deepest pits or basin be filled with 
peat. 
When they can be obtained, the large Cumber- 
land slates already mentioned, or other similar 
material, may be employed as deep retaining slabs 
around the sides of this sunk portion, the earth being 
terraced against them or not, as any particular effect 
requires. 
The stones employed in making the rockery should 
always, as far as possible, be already hardened by 
exposure to the weather before use. In contrast with 
the soil, their geological character is comparatively 
unimportant, and any local stone easily obtained is 
