ECONOMICAL HOT-HOUSE. 5 



flue at different places, retard the heated air in 

 the higher parts, the advantage of which is very 

 obvious. The rest of the flue is low, as mark- 

 ed in fig. 1. at K. It may be managed, how- 

 ever, in different ways. 



I can, from experience, assure the Society, 

 that I have had as good fruit on the vertical 

 cross trellisses, as under the glass, or on the back 

 wall ; and had I not succeeded ro my utmost 

 wishes, I should never have brought the plan 

 into notice. It is my intention, some time hence, 

 to construct a house, with partitions of brick 

 instead of trellises, which last, however, look 

 best. But when use, and not appearance is stu- 

 died, I should be inclined to give brick a deci- 

 ded preference, for many reasons ; and among 

 others, on account of the facility with which the 

 temperature could be regulated. In fig. 2. P is 

 a small porch, the outer door of which is al- 

 ways shut, before that of the house is opened, 

 to prevent, when necessary, the rushing in of the 

 external air. Q is the furnace. 



