C. 12.] EXPLANATION OF THE PLATES. 227 



fruit ; befides, it alters the pitch of the 

 roof, which in a houfe for a principal Sum- 

 mer crop is certainly of importance. 



Here muft be two lengths of fafhes 5 all 

 of which ought to be made to move at 

 pleafure, in order to admit an equal and 

 free circulation of air. 



A houfe on this conftruclion is alfo 

 perfectly adapted to the cultivation of 

 peaches ; than which, I know not a fitter 

 receptacle for the production of a princi- 

 pal crop; and, if requifite, it might be 

 extended ten feet more in length, as the 

 fires would command a fufficient heat for 

 peaches. 



In this cafe trees are to be trained 

 againft the back trellis to the top, and on 

 the front one to half its height only, that 

 the trees on the back trellis may not be 

 fliaded by thofe on the front* 



Fig. 2. alfo reprefents the plan and fec- 

 tion of a grape-houfe, which is divided, in 

 order to afford a fucceflion of fruit. The 

 front wall and flue ftand on pillars, that 

 the roots may have a free range ; the 

 plants being planted near to the front wall, 



P 2 and 



