62 



OPEN AIR GKAPE CULTURE. 



In default of good stone we think that sun- 



ance. 



dried brick would make a very good wall. The 

 earth of which they are made should be mixed with 

 straw, well worked and made into blocks. 



It is probable that in well-drained terraces such 

 walls would last well if protected with a coping of 

 boards or straw secured with good clay in the man- 

 ner shown in fig. 4, so as to shed the rain. 



' Figure 4, 



Having built this wall, the next step is to fill up 

 behind it, and level ofi" a border of suitable width — 

 say 6 or 8 feet. To do this it will be necessary to cut 

 down a perpendicular face the same height as before, 

 when another wall must be built, and the same pro- 

 cess repeated. 



A writer in the third volume of the " Gardener's 

 Magazine" proposes to train the vines on trellises 



