48 



THE AMATEUR'S GBEEXHOUSE 



"be easily packed up conveniently for carriage. They consist, 

 first, of the ground sill, which may be of leak, if the expense 

 16 not an obiect., seven inches wide, by four inches in thick- 



fXftflnri njxf> -, -> . 



EEMOVEABLE GEEENHOTJSfi. 



ness, the four sides of which are held togetl er at the angles 

 by means of irons screwed on with square-headed screws (Fig. 

 9 a). No pegs or nails are to be driven into any of the mor- 

 tise tenons, hut in every part use, in lieu thereof, either the 

 screws Fig. 9 « or Fig. 9 b. The studs are mortised into the 

 sill, and have a substance of four and a half inches by four 

 inches ; and these again are mortised into the rafcer-plate (see 

 section, Fig. 11). Between these studs (see section. Fig. 10) 

 the sashes (h) are set up, and to keep them steadily in their 

 places splines (e) are braded on to the studs. These sashes 

 may be exactly like those used in house building, without, of 

 course, the accompaniment of boxes and weights. Fpon the 

 front of the stud a half-circular moulding (c) may be braded to 

 give a degree of lightness to the appearance. Also to the 

 same end, as well as to throw off water, let the sill be bevelled 

 at d. Above the sashes are to be hung on pivots small lights 

 for ventilation. These;may be opened and kept so by means 

 of a small iron having holes in it, to drop on to a pin fixed in 

 the lower sash (Figs. 11 — 5). This iron must also have a 

 joint so as to hang down when the ventilator is shut. The 



