OTHER CORAL STRUCTURES 285 



driven out through holes, with the production of various 

 curious notes. 



At the back of Puhi Tikus is a rock which at different levels 

 of the tide and under different conditions of wind and sea 

 emits sounds that range from a deep sigh to a shrill scream. 



The point is of interest in connection with the island 

 legend that a spirit voice exists which, calling to people — 

 especially young children — lures them to their fate over the 

 barrier edge. 



