'276 THE FORCING GARDEN. 



The parapet may be ab@ut eighteen inches in height, 

 and the rafters should rest immediately upon it. 

 The intention here is, to train the peaches and nec- 

 tarines up the roof, in the same manner as vines, 

 only a little nearer to the glass, and none against 

 the back-wall. 



The front-flue may run within two feet of the 

 parapet, and should return by the back-wall, being 

 separated from it by a three-inch cavity. The pa- 

 rapet and front-flue must stand on pillars, three feet 

 deep under the ground-level, in order to give full 

 scope to the roots of the plants. 



A house intended as a succession house to the 

 above, that is, not to be forced so early, may be of 

 a like length, ten or eleven feet wide, and thir- 

 teen or fourteen feet high. ; also without upright, 

 or front glass, and otherwise may be constructed 

 in all respects as above. And, 



A late peach-house, to be managed by one fur- 

 nace, may be forty or forty-five feet long ; thirteen 

 or fourteen feet wide, and fourteen or fifteen feet 

 high. It may either have, or not have upright 

 glass in front ; which should not, however, exceed 

 four, or four and a half feet in height, including 

 the parapet. The flues may be conducted as above 

 specified for the early houses. The intention here 

 is, to train plants on trellises against the back-wall, 

 and likewise half way up the roof, in the manner 

 of vines ; so that it may be termed a double peach- 

 house. 



5. Of the Pinery. 

 Pineries are, and may be, very differently con- 



3 



