190 DESCRIPTION AND PLANS OF A RANGE OF NEW PINE-STOVES. 



feet in length, by 10 feet 6 inches in width, being room enough to 

 accommodate from thirty-six to forty-two of the largest or full- 

 grown plants. It is an equal span-roofed erection, just high 

 enough to allow the plants to enjoy both sun and air ; and in 

 order to keep the foliage from being injured by the moving up 

 or down of the sashes, and for the purposes of giving air and 

 water, the ridge-piece (A) has an excellent convenience, in the 

 shape of a small shutter or lap (B), which is fixed to the top, and 

 hinged. These shutters act in connection with the lights : thus 

 as soon as the latter are in their places, the shutters fall into 

 theirs, and they are readily raised with the lights. Air may also be 

 administered by means of tilts, which are fixed to the wall-plate 

 by small chains (C). By these means facilities are afforded for 

 supplying any amount of air at all times and seasons throughout 

 the year ; a great desideratum ; and the supply can be so re- 

 gulated as to suit either growing plants, ripening fruit, or plants 

 swelling fruit. The hot-air chamber (D) in each division is 

 warmed by 4-inch pipes (E), and covered in with 2-inch slate, 

 resting on iron bars, placed on brick piers. This slate bottom 

 supports the plunging-bed (F), which consists of half-decayed 

 leaves, famous material for retaining heat and moisture ; (G) 

 the end of the structure ; (H) the 4-inch pipes for furnishing the 

 top heat ; and (I) a perforated 1-inch copper pipe for contributing 

 the required humidity. In each division the latter has a union 

 joint, worked outside, by a small handle, the turning of which 

 waters the whole of the plunging material, or part of it, as may 

 be desirable ; and the water may also be made to splash up 

 against the slate-shelf (J), which runs round the house, just over 

 the pipes. On this shelf French beans are cultivated during the 

 autumn, winter, and spring months ; and from these a constant 

 and good supply of beans is obtained. 



Iso. 1 shows the handles of four valves outside the Mall, for 

 regulating the bottom heat, and close to it are two more for 

 regulating the top heat : 2, in the next division, is for the same 

 purpose : 3 is a trap-door (open) for entering the stoking-room 

 and coal-cellar, which are under ground, quite out of sight, and 

 commodiously arched in : 4 shows two neat cast-iron square ven- 

 tilators, for admitting air and light to the cellar and stoking- 

 room : 5 is the chimney-shaft, at whose base is a small iron door 

 to afford access for clearing out the flue about that part where 

 soot is liable to collect : b shows the simple way in which the 

 lights are opened. On each side of the house, and running its 

 whole length, is a neat pavement 10 ft. 6 in. broad. The whole 

 is thoroughly drained, and has a neat appearance. It will be 

 observed that the fire has great command of the boiler, and the 

 apparatus is so constructed that the whole range may be heated 



