546 THE GREEN-HOUSE 



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, with 

 respect to the flue, it is better that 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 has 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 the 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 



