Plate 61. 



1. Looking out to sea, from a low coral sand dam thrown across the lagoon face of 



a shallow gap, showing the shingle dam thrown across the sea face of the gap. 



2. Looking towards the lagoon from tlie sea face of a gap of the land rim, across a 



narrow channel cut tliroiigh old ledge rock capped witli modern conglomerate. 

 1, 2, W. Mcll. W., Phot. 



