BY W. H. CLEMES, B.A., B.SC. 21 



hollowed in the centre, forming a large shallow lagoon. 

 The general appearance would lead one to suppose that 

 it is the result of subsidence rather than the result of the 

 accumulation of drifting sand, though the rapid disintegra- 

 tion wO'uld account for abundance of material. An inter- 

 esting field of study would be the formation of the tied- 

 islands and isthmuses of S.E. Tasmania. The amount of 

 evidence here is very little, and no definite conclusions! 

 could be formed without further examination. There is 

 no doubt that the peninsula was separated from Schouten 

 Main just as at present Schouten Island isi separated from 

 the peninsula, and also that the different character of the 

 rocks on the north and south side of the bay would lead 

 to the conclusion that they represent two quite distinct 

 intratelluric intrusions, which were, however, approxi- 

 mately contemporaneous, but further investigation must 

 be left to a subsequent visit. In conclusion, I must ex- 

 press my indebtedness to Mr. Twelvetrees, who gave me 

 valuable assistance in checking the constituents of the 

 rocks found, and especially in determining the composition 

 of the diorite. 



