SOUTH SHETLAND ISLANDS. 



157 



together with Elephant Island it differs from the structure 

 of the South Orkneys, and belongs to the southern chain 

 of volcanic islands ; indeed its anomalous outlines would 

 support such a theory. Of the structure of the tiny 

 island, Cornwallis Island, situated to the north of the 

 strait between the other two, nothing whatever is known. 



Map of the Dirk Gerritz Archipelago (after Stieler's Hand Atlas). 



It appears as though it had been violently detached from 

 the north-east end of Elephant Island. The latter again 

 bears some resemblance in its outline to the South 

 Orkneys, like the members of the central South Shetland 

 group ; it stretches lengthways from E.N.E. to W.S.W.,, 



