3 THE FORCING GARDENER. [B, fi 



and, confequently, the faving in glafs might 

 be more than counterbalanced by the price 

 of the fafh-work. The panes fhould be 

 made perfectly fquare, however, and that 

 for the following reafon :-*-! find they ge- 

 nerally fplit longitudinally, if not broke 

 by accident 3 which is occafioned by the 

 wood, &c. fwelling and contracting by the 

 influence of tjie weather* The pane is not 

 a whit the worfe ; and, if it was perfectly 

 fquare at firft, is as ufeful in the fame 

 place as ever, by being taken out and re- 

 verfed. For this purpofe, the laps fhould 

 be made half an inch at firft, and will now 

 be a quarter, which is fufficient. 



I would here obferve, that I difapprove 

 of the method of puttying up the laps in 

 glazing, as thereby foul air is confined 

 in the houfe. The hot -houfe as much re- 

 quires a free circulation of frefli air at all 

 moments, as the dwelling-houfe ; nay, more 

 fo : Do not the flues make foul air in the 

 houfe every moment they are at work ? 



Earthen flues, that is, flues whofe walls 



are of brick, and covers of tile, are to be 



preferred to all others 3 as they keep the 



ifioft couilant and agreeable heat of any, 



- and 



