144 On the proper construction of Hot-bed Frames. 



conducted out of them into the open air ; and the depth of 

 the frame, either for the hot-bed or inclined plane of earth, 

 should not be less than eighteen inches. The holes in the 

 side of the frame, through which the young shoots are to 

 pass, should of course be closed during the spring, and till 

 wanted ; and if the weather be cold, it will be necessary to 

 cover the frames at night. When the Grapes are nearly full- 

 grown and begin to ripen, it will also be highly advantageous 

 to draw off the glasses during the day in fine weather, by 

 which means the fruit will be exposed to the full influence 

 of the sun, without the intervention of the glass, and will 

 attain a degree of perfection that it rarely acquires in the 

 Vinery, or Hothouse. 



