THE CULTURE OF THE VINE AT THOMERY. 419 



If the grapes themselves are attacked^, it is on tliem that the 

 flowers of sulphur should be applied. It has been remarked 

 that under sunshine the Oidium may be totally destroyed in 

 one hour^ a result that may be attributed to the speedier 

 disengagement of sulphurous acid gas by the heat of the sun, 

 but it is dangerous to apply it if the sun is too strong." 



The pruning of the vine is so well understood in England 

 that it is needless to give it here in the full detail with which 

 it is honoured in M. Rose-Charmeux's book, the ^•'Culture 

 du Chasselas/^ Indeed,, after having translated his direc- 



Fjg. 236. Fig. 237. 



Shade to protect the Grape -thinners from thirty-one inches wide, and 



strong sun. ten inches and a half deep. 



tions their painful and unnecessary minuteness and great 

 length have obliged me to omit them. The system as shown 

 in Figs. 227 and 228 is simply the well known spur pruning 

 practised in nearly every English vinery. There are indeed 

 several modifications of training ; but this as everybody knows 

 is of no real importance. In this case, as with the vine 

 indoors, the selection of a proper medium for the roots is of 

 far greater importance than anything else, while the 

 simplest form and the best system of pruning are without 

 doubt the same as those seen in our vineries — an erect 



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