THE FLORAL WORLD AND GARDEN GUIDE. 



193 



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 (Fig. 11 — 5). 

 This iron must also have a joint so as to 

 hang down when the ventilator is shut. 

 The rafter-plate aud gutter is formed out 



building into a drain or tank ; the rafters 

 are five inches by three and a-half inches, 

 and have a beading braded on to their 

 under side, and a capping on the top, for 

 the double purpose of keeping the roof 

 lights in their place, and the water from 

 getting into the house ; but, in addition 



Ground Plan. 



of one piece, seven inches by four inches, 

 and the gutter must be lined with zinc or 

 thin lead, to prevent the water injuring 

 the. wood,. A small lead pipe will convey 

 the watwif down, the i».!>'.d<? angle of the 



to the capping, the lights must have 

 screws (Fig. 9 b), commonly known as bed- 

 screws, put through the top and bottom 

 into the ridge-tree and rafter-plate. The 

 rafters and studs must likewise fee seourect 



