IOO FRUIT CULTURE UNDER GLASS. 



away from the bottoms of the vines, and the old ones 

 cut out altogether. 



TRAINING. 



With regard to the extension system of training, by 

 which a vine is made to fill a whole house, there can 

 be no objection to it, provided a border extending 

 away from the front of the vinery in proportion to the 

 extension of the branches can be secured for that large 

 range which an immense vine, filling it may be one 

 large house, requires for its roots. This condition se- 

 cured, there can be no objection urged against what is 

 called the extension system. Another matter to be 

 taken into consideration is, that a vine having its roots 

 extending to an immense border area is less under con- 

 trol, especially for early forcing. All things considered, 

 I prefer in a general way a compromise between the 

 one-rod and the extension system ; and think that a 

 vine limited to two main rods is, in by far the majority 

 of cases, more under the control of the cultivator, and 

 best adapted for early forcing. 



For the supply of summer and autumn grapes, there 

 can be no objection to filling a house with a vine or 

 two, provided that a run of border congenial to them 

 can conveniently be provided for such large vines. In 

 some localities where the vinery is set down in a soil 

 naturally congenial, there is little difficulty in this re- 

 spect. But in the majority of cases the border has to 

 be artificially prepared and limited ; under such cir- 

 cumstances, it is better to restrict the vines to two or 

 three rods. 



