332 FORCING GARDEtf. 



these dimensions may be varied considerably, according to 

 the time at which the crop is desired to come in. For 

 early forcing, perhaps twenty-five or thirty feet in length, 

 and seven or eight in breadth, are sufficient ; while a house 

 in which the operations of nature are only to be slightly 

 accelerated may be extended to fifty feet. As in the 

 vinery, the fruit wall is arched, to permit the egress of the 

 roots to the neighboring border. Upon this fronUHrall is 

 usually placed a range of upright sashes, which are sur 

 mounted by the sloping rafters of the roof. A common 

 form of a petch-house is annexed, the upper figure showing 

 the vertical section, and the under one the ground plan ; 

 &amp;lt;z, a are the flues, b is the table trellis, c the trellis on the 

 back wall ; along with which a hanging trellis, represented 

 at p. 327, is sometimes employed, although this is not 

 approved of by many. The flue, which is built on pillars 

 an/1 returns on itself, occupies the centre of the house. 

 The trees are trained to the two trellises b and c, and to 

 the hanging trellis, if such be in use. Against the back 

 wall three or four dwarf trees are planted, with interme 

 diate riders, the latter being altogether removed at the end 

 of four or five years at furthest. These, with three for 

 the front trellis, make in all nine or ten trees for each 

 house. 



The figure on page 334 represents another form of the 

 peach-house, not so generally used as the former, but of 

 equal if not superior merit. We have supposed it heated 

 by a water apparatus a, a, but that is not an essential 

 matter, as a common flue is equally applicable. There is 

 no upright front glass, nor any trellis on the back wall, 

 the trees being planted in front, and trained on a wire 

 trellis 6, attached to the rafters, and covering the whole 

 surface of the sloping roof. As the peach tree is not 



