44 THE FRUIT GARDEN. [Jan. 



But to continue the same trees more effectually in health, and in 

 a bearing state, some have a double portion of walling and framing 

 planted, but more particularly that of the first described fire-heat 

 frame, which is sometimes contrived to move or slide along from 

 one place to another, for one frame-work and glasses to serve two 

 portions of walling, so that being alternately worked, one part one 

 year, the other the year after, each portion of trees will have a 

 year of rest in their natural growth, and will succeed each other 

 in due order for forcing, whereby the health and vigour of the trees 

 will be better supported, and each year a greater crop of fruit may 

 be expected than if the same trees were successively forced every 

 year. 



Hot Walls. 



Hot walls are ranges of brick or stone walling faced with glass, 

 generally running due east and west, fronting the south and en- 

 closing a space of several feet width, furnished with internal fire- 

 flues, &c, wholly for forcing fruit trees to early production. But 

 as hot walls and forcing-houses are nearly similar in their construc- 

 tion, use, and general management, to forcing- frames, reference 

 should be had to that article for their general explanation. 



Vineries . 



Various buildings have been contrived to effect the ripening of 

 the more choice kinds of late grapes, which cannot be effected in 

 the open ground, as likewise to force the earlier sorts, so as to have 

 them fit for the table in May, June and July. The constructions 

 of these kinds of buildings are different, though all answering the 

 same purpose: some are constructed with flues ranging within 

 the wall where the vines are trained up; but as the vines would 

 receive more heat at times by being closer to the wall than is pro- 

 per, a lattice work is generally detached therefrom, to which the 

 branches are trained, and the whole is covered with a range of 

 sloping glass; but the more common method is to train them 

 under the sloping glasses of the hot-house, or other similarly con- 

 structed stoves or forcing-frames; in such places the vines are 

 generally planted close to the outside, and introduced through 

 holes contrived for the purpose in the upright timbers of the front- 

 lights, as low down as can conveniently be done. 



In some vineries the vines are planted near the front, in the 

 inside, and trained up to neat trellises made for that purpose close 

 under the roof or sloping glasses. 



SOUTHERN STATES. 



In the southern states, especially such of them as have not severe 

 winter frosts, you may plant apple, pear, peach, nectarine, apricot, 

 cherry and plum trees, both for espaliers and standards: plant 



