546 THE GREEN-HOUSE 



wall be raised more than four and a half, or five feet 

 above the level of the parapet. The door or doors 

 may be placed at either end, or in the middle of 

 the back-wall, if the flue be not returned in it. 

 Indeed, wuth respect to the fine, it is better tliat it 

 double under the stage ; in which way it would have 

 most power over the temperature of the house, with 

 least waste of fuel. 



SECT. III. 



ON THE CONSTRUCTION OF THE CONSERVATORY. 



VERY much of what lias been advanced in the 

 preceding section will apply here, particularly as to 

 the length, breadth, height, and form of the green- 

 house most approved. A conservatory in form of 

 the other, or next best constructed green-house, 

 would also answer very well ; but in this respect, as 

 in the construction of the green-house, much lati- 

 tude is to be given and taken. It is necessary, how- 

 ever, in order that certain points may be specified, 

 and in order to prevent repetitions, to condescend 

 on some particular shape and size. I shall therefore 

 suppose the house is to be of tlie form and dimen- 

 sions of the Complete Green-house, described above ; 

 that is, with respect to its exterior appearance. First, 

 then, 



Instead of the flue being conducted by the para- 

 pet, it must be placed under the walk, having pro- 

 per cavities at each side, to let the heat escape 



