364 



APPENDIX II. 



Pig. 99. 



removed. During the summer the two most vigorous shoots on 

 each vertical stalk are preserved, and they are allowed to grow 

 to the top of the wall. The following year there is taken away 

 from the foot of the trellis as much earth as possible, ahout 

 16 inches, taking care not to harm the old roots. The earth is 

 hollowed out, completely as it were isolating the base of each 

 vertical stalk. Then they are laid at the base of the trellis pre 

 viously arranged for their reception. As each one leaves two 



