PLANS FOR FORCING HOUSES. 213 



to the different sorts of fruits separately, although 

 the erections may be in nearly the same form ; 

 consisting of pineries, vineries, peacheries, (prin- 

 cipally for peaches, nectarines, apricots, plums, 

 figs, &c.,) and cherry houses, chiefly for cherries; 

 in the whole of which, vines are frequently intro- 

 duced, to train up under the top glasses, and all 

 the forcing houses are likewise of great utility 

 for producing early flowers, vegetables, &c. 



The various forcing houses are sometimes con- 

 structed on different plans, some from taste, 

 others through the situation, not allowing the 

 house to be built lengthways, from east to west ; 

 but they should always be erected to receive as 

 much sun as the situation will admit of. Some 

 forcing houses for tree fruits are formed, for being 

 heated by fire heat, through flues; others by steam 

 or hot water through pipes, without any bark 

 bed. Others are worked by bark bed heat alone, 

 which produces a regular, kind heat through- 

 out the house, but this alone will not bring the 

 trees so forward as when assisted with fire or hot 

 water, or with the latter alone ; but where there 

 is a bark bed, less fire or hot water will be re- 



