420 
LANDSCAPE GARDENING. 
or less according to circumstances. When it is joined to the 
dwelling by one of its sides , (in the case of the parallelogram 
form,) the roof need only slope in one way, that is from the 
house. When one of the ends of the conservatory joins the 
dwelling, the roof should slope both ways, from the centre. 
The advantage of the junction in the former case, is, that 
less outer surface of the conservatory being exposed to the 
cold, viz. only a side and two ends, less fuel will be required ; 
the advantage in the latter case is, that the main walk lead- 
ing down the conservatory, will be exactly in the line of the 
vista from the drawing-room of the dwelling. 
It is, we hope, almost unnecessary to state, that the roof of 
a conservatory, or indeed any other house where plants are 
to be well -grown, must be glazed. Opaque roofs prevent 
the admission of perpendicular light, without which the 
stems of vegetation are drawn up weak and feeble, and are 
attracted in an unsightly manner towards the glass in front. 
When the conservatory joins the house by one of its ends, 
and extends out from the building to a considerable length, 
the effect will be much more elegant ; and the plants will 
thrive more perfectly, when it is glazed on all of the three 
sides, so as to admit light in every direction. 
The best aspect for a conservatory is directly south ; south- 
east and southwest are scarcely inferior. Even east and 
west exposures will do very well, where there is plenty of 
glass to admit light ; for though our winters are cold, yet 
there is a great abundance of sun, and bright clear atmos- 
phere, both far more beneficial to plants, than the moist, foggy 
vapour of an English winter, which, though mild, is com- 
paratively sunless. When the conservatory adjoins, and 
looks into, the flower-garden, the effect will be appropriate 
and pleasing. 
