10 
piece of groiiiul for that purpose, and let 
such plants be kept together in one place. 
In this manner they have a good effect, if 
the specimens are nicely arranged. But 
when native plants are mixed among the 
exotics they have the appearance of weeds. 
HURDLE 
For preserring single trees in Parks or 
Pastures. 
This Burdie has a sexangular form : — the 
first figure represents the whole when put 
round the tree : the second figure, with a 
tree in the centre, is a section of the first. 
I'he perpendicular supporters next the tree 
may be made a foot high — those on the 
outside of the Hurdle two feet high. The 
<Iefending bars (as represented in figure 
1.) should be about three feet long: their 
projection on the outside should not be 
uniform, but every second bar should pro- 
ject six or eight inches beyond the inter- 
mediate one; and they should besufficienly 
rank to prevent cattle from approaching 
between them to injure the tree. The 
points should be made sharp. This Hurde 
may be made in a rustic style, of planed 
and painted wood, or of cast iron. Very 
