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XXVII. On the Cultivation of the Vine in Forcing Houses y 

 with Observations on Forcing Peaches. By John Wil- 

 liams, Esq. of Pitmaston, near Worcester. 



Read February 1, 1814. 



Th e Fruit Committee of the Horticultural Society having 

 expressed their approbation of the flavour of the Grapes I 

 submitted to their judgment last autumn, I am induced to 

 offer a few remarks on the management of the vinery, with 

 the view of improving the quality of the fruit. 



There are some circumstances attending the state of vege- 

 tation in forcing houses, not sufficiently attended to by the 

 generality of gardeners, a strict attention to which, however, 

 is absolutely indispensable for obtaining good fruit. 



When a Vine is planted in a forcing house, it receives an 

 increase of warmth from the solar influence operating upon 

 the confined internal air, or from artificial heat communi- 

 cated by the flues, or conjointly from both these sources. 



In each case, when the foliage is expanded, a large por- 

 tion of moist vapour is given out from the under sides of the 

 leaves, and becomes mixed with the air in the interior of the 

 house. 



Plants will not only live, but grow with greater rapidity 

 than ordinary, in a moist atmosphere, if the moisture do 

 not exceed certain bounds. Under these circumstances, 

 however, the annual shoots become large, soft, and spongy, 



