CORAL BEEFS OF TORRES STRAITS 



213 



rf^ ■.» ,., 1> **** , »»Wm, ( 



% 





SLAND 



S. L*l 9* SS' E Long 144' r 



From Sunt?) b? Ciptun 0»«n 189J 



and A. a Mvtt 1911 



as has been shown by Andrews, Griffith-Taylor and Hedley, was once 

 above the sea but is now submerged to a depth of from 90 to 180 feet. 

 Shattered fragments of the old limestone are found imbedded in the 

 ash crater of the volcano. 



On the western side of the island, the crater rim rises to a height 

 of about 750 feet, the seaward slope being steep and evidently deter- 

 mined by the angle of repose of the ejected ash. 



In later times, however, the volcano appears to have exploded and 

 destroyed the northern part of the crater rim, out of the break in 

 which there flowed a tongue-shaped mass of lava which now constitutes 

 the northern half of the island. The last volcanic activity issued from 

 a small ash-cone in the cup of the old crater, and then the island lapsed 

 into its unbroken quietude. 



A luxuriant growth of cocoanut palms, and forest trees now covers 

 the old lava, while coarse grass grows rankly over the ash slopes of the 

 crater. The torrential rains of the wet season from November to March 



■PREVAILING WIND 



Sea Level 



/Reient^i 

 ACoraU| 



*«"" J •* 4 AND L*VA 



S.E. TRADE 

 Sea Level 



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Lttliothainnion 

 -R.dje v 



t » , 1 < * ' t » , ' t » 



t * old , limestone t 



»♦*♦*♦ t ***** * » 



» ' t * t » T t 1 , 



decent ''Coral? 



* t * T Vt * 



Old limestone 



t t t 

 ♦ . i 



T + 



t t 



t * 



N.W.-S.E., Section of Maer Island. (Diagrammatic.) 



