GR! 



G R E 



small weeds or moss, as is often the case, they 

 must be broken up in spring, and turned, the 

 surface to the bottom, and the bottom to the 

 top, by which the weeds and moss will not only 

 be buried, but the walks appear as fresh as when 

 new laid. The custom of breaking up Gravel- 

 walks in the beginning of winter, and laying 

 them up in rough ridges, to destroy weeds and 

 moss, is not eligible for general practice, or only 

 occasionally, where any walk is exceedingly over- 

 run ; it is mostly more advisable to permit all 

 the principal Gravel-walks to remain undisturb- 

 ed, at least till the spring, when, if it appear 

 necessary, the whole may be broken up, regu- 

 larly turned, and re-laid in a neat manner. 



The turning of Gravel is a sort of slight dig- 

 ging, the foul surface being turned down and 

 the fresh up ; some have ii performed regularly 

 once a year in the early spring, in order to pre- 

 serve the colour. In these cases, the laying, 

 raking, and rolling are performed the same as 

 in the first constructing the walks. 



The rolling should be performed once a week 

 at least, in summer, but if two or three times, 

 the more beau!, ful the walks will appear, and it 

 will tend greatly to destroy weeds and moss : it 

 is mostly a rule anions; gardeners, to sweep 

 and roll every Saturday. During the summer it 

 is of much advantage to give a good rolling 

 after rain, which preserves a compact smooth 

 surface. 



GREEN-HOUSE, a sort of building fronted 

 and covered with glazed frames, destined for the 

 purpose of preserving various sorts of exotic 

 plants through the winter season: the aid 

 of artificial heat is not here necessary, ex- 

 cept in very intense cold weather. It is advisable, 

 in constructing such houses, to erect flues to use 

 occasionally, which may prove serviceable, not 

 only in severe frosts, but also in moist foggy 

 weather, when a moderate fire now and then 

 will dry up the damps, which would otherwise 

 prove pernicious to many of the tender kinds 

 of plants. 



It differs from the conservatory chiefly in this 

 circumstance, that the plants, trees, or shrubs 

 are in pots or tubs, and placed upon stands, 

 frames, or stages, during the winter, to be re- 

 moved to proper situations in the open air in the 

 hot summer season ; while in that there are 

 beds, borders, and clumps laid out in the ground 

 plan, and made up with the best earthy mate- 

 rials to the depth of three or four feet, in which 

 the shrubs, trees, &c. are regularly planted; the 

 whole of the root being removed during the 

 summer toadm.it , and replaced on the 



approach of the autumn, to remain till the fol- 

 lowing suni- 



Green-Houses are at present mostly con- 

 trived to stand in the pleasure-ground, near to. 

 the house if possible. They should be upon a 

 somewhat elevated and dry spot, full to the south, 

 and where the sun has access from its rising to 

 its setting: the buildings are commonly of brick 

 or stone, having the fronts and tops almost 

 wholly of glass-work; and ranging lengthways 

 east and west. They are generally constructed 

 upon some ornamental plan. As to the general 

 dimensions in respect to length, width, and 

 height, they may be from ten to fitly feet or more 

 in length, according to the number of plants to 

 be contained ; and in width, from ten or fifteen 

 to twenty feet; but for middling houses, fifteen or 

 eighteen feet is a sufficient width ; and in 

 height in the clear, nearly in proportion to 

 the width. 



The walls on the backs and ends, particularly 

 the former, should be carried up two bricks thick; 

 and if more than fifteen feet high, two bricks 

 and a half thick ; at one end of the back wall, 

 on the outside, it is eligible to erect a furnace, 

 for burning fires occasionally, communicating 

 with flues within, ranging in two or three re- 

 turns along the back wall, having one flue run- 

 ning along the front and end walls, raised wholly 

 above the floor. 



The fronts of the buildings should have as 

 much glass as possible, and wide glass doors 

 should be made in the middles, both for orna- 

 ment and entrance, and for moving in and out 

 the plants. It would also be convenient to have 

 a smaller entrance door at one end : the width 

 of the windows for the glass sashes may be five 

 or six feet ; and the piers between the sashes 

 may be either of timber, six, eight, or ten inches 

 wide, according to their height, or, if of brick 

 or stone-work, two feet wide at least, sloping 

 both sides of each pier inward, that by taking 

 ofT the angles, a freer admission may be given 

 to the rays of the sun : for the same reason 

 the bottoms of the sashes should reach within 

 a foot of the floor of the house, and their tops 

 almost as high as the roof; and if brick or stone 

 piers two feet wide, shutters may be hung on 

 the inside to fall back against each pier : the 

 roof -may be either wholly or half glass-work, 

 next the front ; the other half slated, especially if 

 the upright or front piers are of timber ; and 

 shutters to cover the top glasses may be con- 

 trived so as to slide under the slated roof: 

 where the piers are of brick or stone, it is com- 

 mon to have the roof entirely slated or tiled ; but 

 slating is the. most ornamental, either for a half 

 or whole roof; and the ceiling within should ho 

 lathed, which, as well as the whole inside wall, 

 must be well plastered and white-washed. 



