162 
THE GREENHOUSE. 
being made of smaller timbers, and a similar advantage is ob¬ 
tained in the rafters, which in this do not show more than an inch 
and a half in thickness in the inside. Ample opportunity for 
ventilation is secured by the opening of the front sashes, and 
those in the top of the ends. The front is formed entirely of 
French casements opening to the floor, and allowing an easy 
egress to the walks of the garden ; those at either end fall back 
against the sashes there, while those in the middle fold one over 
the other. 
The stages are arranged so as not to obstruct the passage } 
by leaving a path directly through the centre, and this places 
the plants in a position to be seen to the utmost advan¬ 
tage from the rooms, without excluding the light from them. 
Small shelves and detached brackets carry, in the one case, 
smaller plants, and, in the other, choice specimens, that are desired 
to be viewed separately. The floor is formed of slate slabs, be¬ 
neath which, at the front, the heating pipes are carried, so as to 
be unobserved. The entire cost of this erection does not exceed 
twenty-five pounds. 
Should it happen that the rooms to which it is desired to 
attach the conservatory are above the level of the garden, the floor 
