Birds of Gough Island. 



251 



These trees appear hardly to rise beyond twenty feet in 

 height and generally bear a thick growth of licheus on their 

 stems. Under the waterfalls and along the sheltered banks 



Text-fig. 18. 



Ravine, Gough Island. 



of the streams ferns and mosses grow in luxuriance. More 

 than the general aspect of the vegetation on the higher 

 ground could not be determined, but the very summit of 



