58 
BUILDINGS FOR HORTICULTURAL PURPOSES. 
strainedly, being pruned on the spur system, 
so as to throw out a number of short shoots 
from the wall ; this will break the formality 
apparent in trained plants, and will in most 
cases secure abundance of bloom. Such situa- 
tions are not, however, intended solely for 
climbing plants ; others of a shrubby and 
evergreen nature are quite appropriate, and 
as an instance the Camellia may be men- 
tioned ; these plants would bloom to perfection 
in such a situation. The various plants must 
not be allowed to interfere with each other's 
growth, nor the strongest to overpower the 
weakest ; each by the free use of the pruning 
knife, and the judicious removal of the grow- 
ing shoots, must be restrained within its 
proper bounds. In general, the climbing 
plants may occupy the upper part of the sur- 
face, while the shrubby plants fill up the 
spaces near the base. In some instances 
where these walls have been erected, and 
glass sashes provided, flues have also been 
built in the walls, connected with furnaces 
situated at the back : when this is done the 
situation is fully equal to a greenhouse, and 
any plants usually kept in a greenhouse might 
be planted. 
One of the most complete walls of this kind 
is that at Chatsworth, in Derbyshire, where 
the experience of some years has proved 
highly successful. This wall has the appear- 
ance of being formed of alternately receding 
and projecting compartments, supported by 
massive pillars. The receding parts are those 
which are protected, the others being covered 
with hardy plants. At about a foot and a half 
from the front of these recesses, a glazed sash 
is placed, which, when in its place, covers the 
plants, and when not required is made to slide 
behind the projecting compartment ; thus the 
plants can be covered or exposed with very 
little trouble. Of course the same principle 
of covering might be carried out with canvass 
or other screens less expensive than glass ; or 
protection might be afforded by the less orna- 
mental plan of employing blinds to be let up 
and down at pleasure by means of rollers ; this 
would do very well for many plants, though of 
course not for the very tender kinds, because 
as the blinds would more or less exclude light, 
they could not, without injury, be continued 
over the plants for any length of time, as 
might be necessary in severe weather. 
Without any other shelter than that afforded 
by the wall itself, aided by the complete drain- 
age of the soil, a number of the most beautiful 
half-hardy shrubs introduced to this country, 
and which are just too tender to stand our 
winters when planted out openly, might be 
grown so as to form very interesting objects. 
Such plants are the half-hardy species of Ber- 
beris, of Magnolia, of Escallonia, of Clianthus, 
of Clematis, of Rosa, of Arbutus, of Chimo- 
nanthus, of Ceanothus, of Lonicera, and many 
others. Such plants should be planted while 
young, and trained so as to cover the wall. 
BUILDINGS FOR HORTICULTURAL PURPOSES. 
As many persons are deterred from build- 
ing greenhouses and conservatories by the 
expense, or rather the supposed expense of 
their erection, it ought to be generally known 
that by going a proper way to work there is 
hardly an excuse for being without these 
luxuries, (for such we deem them.) in any 
moderate garden. It is true that those per- 
sons who set themselves up as builders of 
such concerns, and who would make it appear 
that there is something peculiar that takes 
them out of the ordinary builder's business, 
do charge very exorbitantly for all kinds of 
horticultural buildings ; and where money 
