BY FIRE OR HOT WATER. 229 



ten or twelve inches from the flues ; or the trees 

 may be planted next the front, and trained up 

 parallel with the glass to wire work, properly 

 arranged for the occasion, about eight or ten 

 inches from the glass, by this latter method the 

 sun has great influence in forwarding the fruit 

 and bringing it to early perfection. 



These kinds of glass slips for fruit forcing, 

 may be of long dimensions, and so contrived 

 that part of the trees may be forced one year, 

 and part another, by having the frames and 

 sashes of equal size, so that they may be re- 

 moved from one division to another, and by 

 giving the trees one or two years' respite, occa- 

 sionally, exposing them fully to the open air, will 

 greatly renovate their constitution, and strength- 

 en them for future forcing. 



FORCING FRAMES FOR FORCING FRUIT-TREES 

 BY BARK-BED HEAT ALONE. 



Par. 31. In large forcing establishments, be- 

 sides the foregoing plans for forcing peaches, nec- 

 tarines, &c., a kind of forcing frames are con- 

 structed, wholly of woodwork at the back, front, 



