37° 



Joiirnal of Travel and Natural History 



mediately upon the verge of high water, is a tall isolated sandstone rock, having 

 precisely the appearance of an old ruined castle, and appropriately named Ruin 

 Rock, which forms an excellent land-mark by which to anchor a ship. The 

 harder layers of sandstone having defied the effects of weather, and the spray 

 which is dashed up during the north-east monsoon, to which the harbour is 

 exposed, the softer portions have at the same time been more or less excavated, 

 leaving a mimic resemblance of the ruined chambers of a three-storied building. 





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But the most curious and extensive effects of the direct action of the sea are to 

 be found at the entrance of the harbour on either side. That on the north side 

 is called Image Point on the chart, but the south side is even more remarkable, 

 and no less deserves this name, while the effects are on a larger scale." (p. 89.) 



To what formation these sandstone rocks belong Dr CoUihg- 

 wood could not determine, btit they are part of a carboniferous 



