By Thomas Andrew Knight, Esq. 101 



by a single fire place, the flue goes entirely round without 

 touching the walls ; and in the front a space of two feet is 

 left between the flue and the wall, in the middle of which 

 space the Vines, which are trained to the roofs, about eleven 

 inches from the glass, are planted ; and as both the wall and 

 flue are placed on arches, the Vines are enabled to extend 

 their roots in every direction, whilst, in the spring, their growth 

 is greatly excited by the heat, which their roots and stems 

 receive from the flue. Air is generally admitted at the ends 

 only, where all the sashes are made to slide, to afford a free 

 passage of air through the house, when necessary, to prevent 

 the Grapes becoming mouldy in damp seasons. About four 

 feet of the upper end of every third light of the roof, is made 

 to lift up, (being attached by hinges to the wood-work on the 

 top of the back wall) to give air in the event of very hot and 

 calm weather ; for I prefer giving air by lifting up the lights, 

 to letting them slide down, because when the former method 

 is adopted, no additional shade is thrown on the plants. 



The preceding plan is here particularly recommended for 

 a Vinery only ; but I am confident that by sinking the front 

 wall below the level of the ground, and making a small change 

 in the form of the bark-bed, the same elevation of roof may 

 be made equally applicable to the pine stove, and that no 

 upright front glass, ought, in any case whatever, to be used ; 

 for light can always be more beneficially admitted by add- 

 ing to the length of the roof, if that be properly elevated ; 

 and much expense may be saved both in the building, and in 

 fuel. For forcing the Peach or Nectarine, I must, however, 

 observe that I think any house of the preceding dimensions 

 wholly improper ; and I propose to submit a plan for the 



