STYLE. 



55 



the plan in the position it occupies, saving 

 the trouble of labelling every individual 

 tree, and also preventing confusion from 

 the labels being lost or obliterated. The 

 raspberries, gooseberries, and currants are 

 arranged by themselves, and can thus 

 be more conveniently protected from 

 birds by a covering of netting. 



The north-west slip is to be occupied 

 with asparagus, and the north-east one 

 to be cropped with sea-kale, next the 

 compost yard. Jerusalem artichokes, 

 globe artichokes, horse-radish, &c, and 

 other permanent crops, are to be alter- 

 nated by asparagus placed at the other 

 side of the garden, in due course of rota- 

 tion. 



The ground around the gardener's 

 house is to be laid out in the shrubbery 

 and flower-garden style. In the cellars, 

 provision is made for the cultivation of 

 mushrooms, for forcing and blanching 

 sea-kale, rhubarb, chicory, &c, and also 

 for storing carrots, beet, and other edible 

 roots. 



The hothouses — as will be seen by Plate 

 VI., fig. 2, which is the elevation — are dif- 

 ferently constructed from those in gene- 

 ral use. Although divided by cross glass 

 partitions, to facilitate the operations of 

 culture, they may be said to form one 

 large house upon the ridge-and-furrow 

 principle. Ventilation is effected, as al- 

 ready noticed, by subterranean air-drains 

 through the floors and cross partitions, and 

 also by openings in the front parapet, each 

 4 superficial feet in area, furnished on the 

 outer side with highly ornamental cast- 

 iron gratings, sunk 2 inches within the face 

 of the wall, in the form of panels, and on 

 their inner side with wooden ventilators 

 (vide sect. Ventilation) upon the louvre 

 principle, and made to open and shut to 

 any extent by a lever handle by the sides 

 of the doors— affording, with the air-drains 

 already noticed, a greater amount of ven- 

 tilation than is employed in hothouses in 

 general. 



It will be sufficiently obvious that, by 

 this mode of admitting air, two important 

 essentials are secured — namely, a constant 

 supply during night, and at all seasons, 

 or what Dr Lindley has very properly 

 denominated aeration : and this supply of 

 air brought to a temperature nearly that 

 of the house within, before it reaches the 

 tender foliage and shoots of the plants. 



Such air is, likewise, sufficiently charged 

 with humidity, and also with the natural 

 atmospheric gases entirely unchanged or 

 deteriorated, while it is equally distri- 

 buted through the lower parts of the 

 house — the very parts, according to the 

 usual modes of ventilating, where the air 

 remains unchanged, accumulating gases 

 of the most unhealthy description. 



Top ventilation is secured through the 

 ridges, which extend the whole length of 

 each division, and which are made to 

 open, by a very simple mechanical ap- 

 pliance, their whole lengths simultane- 

 ously. Fig. 30 will explain this mode of 

 Fig. 30. 



ventilation as applied to the centre house, 

 of which the following is the description : — 

 A longitudinal bar, a, 1 inch diame- 

 ter, runs along the centre of the sashes, 

 having flat palms welded on it opposite 

 the side style of moving sash b b. Close 

 to each of these palms are journals turned 

 to suit the pillow-blocks, which are 

 screwed on the fixed standard of the ven- 

 tilator. This fixed standard is the mul- 

 lion which divides the space into panels, 

 and connects the roof part h h with g g, 

 as will be seen between a a in fig. 32. 

 These pillow-blocks are brass, and of 

 the shape shown ; they are fitted on 

 close to the edge of the standard, and 

 up to the shoulders of the palms, and 

 keep the moving sashes in their proper 



