Book I. 



PINERY. 



505 



is fifty feet long by sixteen feet wide, contains 370 superficial feet of bark-pit for 

 pine-plants ; 1400 superficial feet for training vines ; and space for 500 pots of straw- 

 berries or French beans ; quantities greater in proportion to the glass roof, than have 

 hitherto been obtained in any hot-house of the common form and similar dimensions. 

 This structure is entered by lobbies at each end (j^"^. 439. l), which communicate 

 with a back passage, having a glass roof and trellis for vines (2) : in the back wall of 

 this passage, and also in the front of 

 the house, are glazed ventilators open- 

 ing outwards {fig' 440. 3), through 

 which the vines (5) are introduced and 

 withdrawn at pleasure. The pine-pits 

 (7) are raised so as to be as near the 

 glass as is desirable, by vaulting them 

 beneath (6) ; against the front of these 

 pits, shoots of vines are brought down 

 from the roof, and trained (9), and pots 

 are placed over the front flue (8). The 

 vines, close under the roof, are trained 

 on moveable trellis-rods, composed of a centre and two side wires, and placed five feet 

 apart ; these rods are hinged to the front props, and supported in tlie middle of the roof, 

 and at top, by chains and hooks, and in this way can be raised or lowered at pleasure. 

 This house, since its erection, in 1817, has given the greatest satisfaction, and already pro- 

 duces considerable crops of grapes. 



2655. The pine-pit of Scott 

 (fig. 441.) will fruit 120 

 plants, with three or four 

 chaldrons of coals. The 

 bed for the plants is fifty feet 

 long, and seven feet six inches 

 wide; its peculiarities are that 

 there is only a flue in front 

 (fig' 441. a.), which returns 

 on itself, and requiring no 

 glass over it, is covered with 

 flag-stone (6), supported by 

 props of brick work (c). Co- 

 vering the flue with flag- 

 stone, Scott considers a great saving; it is less costly than glass, and as the part that it 

 covers requires no heating, by using it, instead of glass, tlie lights are reduced to a more 



442 



