AUG.] HOT-WALLS. 409 



heat, is more difficult than any species of forcing 

 under glass ; the plants being placed between the 

 extremes of heat and cold, and so near to the flues, 

 as that an over-heat may prove very hurtful to them. 

 Yet, if a trellis be placed against the wall, except 

 against the first course of the flue (which it should 

 be,) the trouble nearly goes for nothing ; as the 

 shoots to be ripened are, in that case, placed beyond 

 the power of the fire, and by circulation of air be- 

 tween the wall and branches, are kept more cool 

 than they would be, if trained close to an unflucd 

 wall. 



As noticed above, a trellis should be placed against 

 the first course of the flue ; and that as a matter of 

 precaution, that the shoots trained on it may be the 

 more safe. The sort of trellis meant here, is one 

 simply composed of spars an inch square, which are 

 nailed close to the wall, across the courses of the 

 bricks, at the distance of five inches from each other, 

 and reach from the bottom, to two inches above the 

 top, of the flue. Thus the shoots will be secure 

 against over-heats, and will not be removed far from 

 the influence of the flue ; and they may be trained 

 close to the upper courses of it, without any fear of 

 danger, if the following directions be observed, viz. 



The fires must be made very moderate at first, 

 increasing their strength gradually, as the season 

 advances. The fire may generally be put on about 

 four or five in the afternoon, kept slow, and should 

 be made up for the night, about eight or nine 

 o'clock. The flues, that is, the first course at the 

 far end, and the second course about the middle, 



