THE GRAPE. 161 



sufficient to insure complete success. Very little 

 modification of the out-door culture is required. 

 The vines are planted more closely together, in 

 order to economize space to the utmost, the single 

 canes running up about a foot below the glass 

 roof, and four feet distant from each other. 

 The mode of training is precisely like the three 

 horizontal wire trellis system, as seen in Fig. 12, 

 page 136. The trellis will of course foUow the 

 angle of the roof. The same directions in regard 

 to checking and pruning are to be followed as 

 have been given for open culture. 



By making the house more permanent, open- 

 ing and closing in order to have complete con- 

 trol of the air, still greater advantages are ob- 

 tained. Early closing of the ventilators and 

 free showering a few hours before sunset and 

 early in the morning will cause luxuriant growth 

 in the early part of the season. In a close house 

 it is easy to secure complete exemption from all 

 diseases. As the season advances water is with- 

 held, and a free circulation of air is given in 

 dry weather. The latest and most delicate 

 kinds, like the Muscats, can be cultivated with 

 perfect success in a cold grapery, and with a 

 certainty which does not pertain to any out-of- 

 door fruit. With the aid of heat, and by suc- 

 cession and retarding houses, it is practicable to 



