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GLEANTNGS ON UORTIOUI.TUHE. (iS 

 GROUND-PLAN OF HEATED VINE-BORDER AT ROI.LESTON HALL. 



9 INCH WALLS. OUTSIDE 



SPACE.- BET 



rtUES M INCHES INSIDE BY BIN HEIGHT 



rtUES IN THE HOTHOUSE 



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Interior of botbouse, forty-five feet long by 

 fifteen feet in breadtb ; iron grating being placed 

 over tbe flues, to walk ui)on. 



Vine border, forty-five feet in length by tvrenty- 

 five feetin breadtb, forming a warm-air chamber un- 

 derneath, supported by alone slabs from Yorkshire, 

 raised by open brickwork, on which the slabs rest ; 

 the chamber being well ventilated. Wall between 

 the hothouse and border on arches. 



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