364 



APPENDIX II. 



Ilg. 99. 



removed. During the snmmer 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, about 

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

 hollowed out, comj)letely 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 



