CONSERVATORIES AND SMALL GREENHOUSES 159 
quire a ridge against the wall of the dwelling house, 
sash-bars running at right angles to this, a 
“urlin,’ or support, midway of these, and a sill 
Maly he MAC Le 
24 plafe 
Fig. 3—A sectional view of a two-bench, 10x20 ft. 
house built against the dwelling wall. If possible it 
would be well to gain a steeper slope for the glass and 
better headroom. The detail in the upper right hand 
corner shows, at larger scale, the plate and front lights, 
indicated just below in the main section. 
for the lower ends. For the south wall we will 
need posts, one row of glass, and boards and 
“ sheathing.” For the gable ends, a board and 
sheathing wall to the same height, and for the bal- 
ance, sash-bars and glass. The required openings 
will be a door or doors, and three ventilators, to give 
a sufficient supply of fresh air. 
