6o FRUIT CULTURE UNDER GLASS. 



sunny weather, thus admitting ■warm air underneath 

 the border. 



It is a very common error to fix the wires to which 

 the vines are tied too near the glass ; they should be 

 not less than 16 inches from the glass, to allow a free 

 circulation of air between it and the foliage. It is 

 scarcely necessary to point out the evil of having the 

 foliage in close contact with the glass. The wires should 

 be iixed at 1 foot apart. 



For Muscat grapes we would recommend an addi- 

 tional pipe on each side of vinery fig. 7. Moisture in the 

 atmosphere should be provided for in all vineries. See 

 page 7, where there is described, in connection with 

 pineries, the method I think best. 



DEAINAGE. 



The first thing that should be thought of and most 

 effectively secured in the making of borders is drainage ; 

 for however great the skUl otherwise brought to bear 

 on the after-management of the vine, first-rate results 

 need not be looked for if the roots are subject to stagnant 

 water. One of the most important points in successful 

 grape-growing, is the preservation in winter of the 

 young roots made in summer, which is impossible if the 

 border is subject to stagnant water. Of course the 

 extent and character of the drainage necessary has to 

 be determined by the position of the vinery, the nature 

 of the subsoil, and to some extent by the average amount 

 of rain which is peculiar to the district. The amount 

 of drainage necessary on the retentive clay of such as 

 Middlesex, or in the lower ward of Lanarkshire, the 

 Dumfries or Argyle coasts, where so much rain falls. 



