64 ON THE CULTURE 



In giving and taking away the air I do it gradu- 

 ally, that is, by little and little at a time, which, 

 without doubt, is the befl way ; for, as I obferved 

 before, fudden changes are always attended with un- 

 pleafant confequences. 



The linings are to be applied to the bed a few 

 days before the plants are ready for finally planting 

 out, in order that the mould and every thing in the 

 frames may be properly warmed for their reception. 



The dung of which the linings are to be made may 

 cither be call together in a heap, to bring it to a heat 

 before it be laid round the bed, or it may be laid 

 round the bed as it is brought from the dung-yard ; 

 but whichever of thefe methods be taken, when the 

 linings are making up, the dung ftiould be well 

 fliaken, and laid up lightly, fo that the heat of it may 

 come up freely. 



The linings are to be made nearly three feet broad 

 in their foundation, and tapered up to about thirty 

 inches at the top, by which they will retain their heat 

 long, and in finking will keep clofe to the bed, which 

 is what fhould at all times be paid proper attention to* 



In the winter and fpring months the linings fhould 

 be trodden upon as little as poiTible, for treading 

 on them would be the means of flagnating their 

 heat. But fhould it at any time, in managing the 

 plants, be found neceffary to {land or kneel upon 

 ihem, boards fhould be laid on their tops for that 

 purpofe ; which will prevent the weight of a per- 

 fon from taking that effect on them which it otherwife 

 Nvould do. 



