208 THE JOURNAL OF BOTANY 
Island, and at least two-thirds of its surface is open to them, so 
that the transformation and destruction of the native vegetation 
is going on at an increased rate of speed, and soon the only 
‘ n the Sn he pengui 
destroy visible plant-life; but when these are abandoned, plant- 
colonization speedily sets in, beginning with Crassula moschata, 
and in course of time there is once more a meadow. “If the 
of vegetat , after 
has been killed out by nesting mollyhawks, the following account 
is given :— 
Here and there will be small plants of the dark-green Blechnum 
durum, small st: ling Veronica enthamt, small mats of bright 
tussocks of Poa lhitorosa, which it is easy to see will, as they grow 
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