FRA 



C 357 ] 



FRA 



tilted behind for the necessary admission 

 of ijvah air, &c. 



With respect to the lights, the wood- 

 work of the frame should be one inch and 

 a half thick and two and a half broad; 

 ttnd the bars for the immediate support 

 of the glass-work should be about an incl 

 broad, and not more than an inch and a 

 half thick; for, if too broad and thick 

 they would intercept the rays of the sun, 

 so should be only just sufficient to sup 

 port the lights, and be ranged from the 

 back part to the front, nine or twelve 

 inches asunder. 



All the wood-work, both of the frames 

 and lights, should be painted, to preserve 

 them from decay. A lead colour will be 

 the most eligible ; and if done three times 

 over, outside and in, will preserve the 

 wood exceedingly from the injuries of 

 weather, and from the moisture of the 

 earth and dung. 



Mr. Knight has suggested an important 

 improvement in the form of frames. He 

 observes, that the general practice is to 

 make the surface of the bed perfectly 

 horizontal, and to give an inclination to 

 the glass. That side of the frame which 

 is to stand towards the north is made 

 nearly as deep again as its opposite ; so 

 that If the mould is placed of an equal 

 depth (as it ought to be) over the whole 

 bed, the plants are too far from the glass 

 at one end of the frame, and too near at 

 the other. To remove this inconvenience, 

 he points out the mode of forming the 

 bed on an inclined plane; and the frame 

 formed with sides of equal depth, and so 

 put together as to continue perpendicular 

 when on the bed, as represented in the 

 accompanying sketch. 



There are several minor points in the 

 construction of frames that deserve at 

 tention. The strips of lead or wood that 

 sustain the panes of glass should run 

 across the frame, and not lengthwise; 

 they then neither obstruct so much the 



entrance of light, nor the passing off of 

 rain. The inside of the frame should be 

 painted white, since plants generally 

 suffer in them for want of light : if the 

 accumulation of heat was required, the 

 colour should be black. 



Raising the Frames. It is a well-known 

 difficulty that the gardener has in raising 

 the frames so as to keep the foliage of 

 the plants within them at a determined 

 and constant distance from the glass. 

 To remedy this, Mr. Nairn, gardener to 

 J. Cresswell, Esq., of Battersea Priory, 

 has introduced the ingenious contrivance 

 represented in the accompanying sketch 

 and references : A, a moveable frame ; 

 B B, inside lining of the pit ; c c, outer 

 wall. Between these the sides of the 

 frame pass, and are lowered or elevated 

 by racks and spindles, D D. 



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A more simple plan might perhaps be 

 adopted, by having frames of the same 

 length and breadth as the original, but 

 only from an inch to three inches, or up- 

 wards, deep. These, as necessary, might 

 be put on the top, and would be kept close 

 by the pressure of the lights ; bolts and 

 nuts might also be easily applied, and 

 the interstices rendered still more im- 

 pervious to air by being faced with list. 



Glass and Glazing. See. STOVE. 



Shelter for the Gluts. In proportion 

 to the number of lights, matting for 

 shading and sheltering must be at hand. 

 The usual mode of covering at night is 

 by laying on mats, and over these litter, 

 in thickness according to the severity of 

 the season. Some gardeners lay hay 

 immediately in contact with the glass, 

 and over this the mats. Every person 

 conversant with these modes of shelter 

 is aware of their inconvenience. In 

 rainy weather they soon become wet, 

 and rapidly chill the beds ; added to 

 which, the trouble caused in placing and 

 removing them, and the danger to the 



