336 
ROCK-WORK. 
[chap. X, 
care that the stones are very large* and piled 
upon one another* so as to imitate the strati¬ 
fication of a rocky country. 
“In general*” says Mr. Loudon* in his 
Suburban Gardener * “ rock-work* to be truly 
natural* can only show the rock on one 
side* or at most on two sides; as scars* cliffs* 
and precipices are seen in rocky districts.” 
This abrupt side or face of the rock should 
be represented as projecting into ledges or 
shelves* to imitate the terminations of the 
different strata; and the flowering plants 
should be introduced* in what may be sup¬ 
posed to be the clefts and fissures of the na¬ 
tural rock. The summit of the rock and the 
sloping side should be covered with turf* 
and may be planted with trees* some of 
which may hang over the rock; or the line 
of junction between the stones and the turf 
may be concealed* by the luxuriance of the 
alpine plants* planted in the fissures* and 
suffered to climb over the top. It must be 
observed* however* that in granite or basalt 
rocks* the lines of stratification are generally 
vertical; and consequently very ill adapted 
for forming ledges for plants. The best ma- 
