THE CROZET ISLES 
227 
part steep. The temperature is rather low during the 
warm months; the Challenger ” noticed a mean of 43° to 
45° F. in December, the thermometer rising to 50° F. 
on only two occasions. 
The vegetation seems to be similar to that of the 
Marion Isles, but does not rise so high on the moun¬ 
tains. Goodridge observed trunks of trees beyond the 
shore line, but this was obviously only driftwood. At 
the beginning of this century the island was inhabited 
by wild hogs, which harassed the young birds, at present 
they seem to have been extirpated; but, on the other 
hand, numbers of rabbits make their holes among the 
lava. 
15' 
