210 APPENDIX. 



origin of this latter reef, which might have been mistaken for 

 a barrier-reef, has already been attempted to be explained, 

 when giving the proofs of the recent elevation of this island. 

 — In Cook's charts the little outlying island of Eoaigee is 

 represented as fringed ; coloured red. — JEoua : I cannot make 

 out from Captain Cook's charts and descriptions, that this island 

 has any reef, although the bottom of the neighbouring sea 

 seems to be covered with corals, and the island itself is formed 

 of coral-rock. Forster, however, distinctly (Observations, 

 p. 14) classes it with the high islands having reefs, but it 

 certainly is not encircled by a barrier-reef; and the younger 

 Forster (Voyage, vol. i. p. 426) says, that ' a bed of coral 

 rocks surrounded the coast towards the landing-place.' I 

 have therefore classed it with the fringed islands, and coloured 

 it red. Dana also shows (Corals and Coral Islands, p. 337) 

 that most of the islands of this group are formed of upraised 

 coral-rock. The several islands lying N.W. of Tongatabou, 

 namely Anamouka, Komango, Kotou, Lefouga, Foa, &c, are 

 seen in Captain Cook's chart to be fringed by reefs, and several 

 of them are connected together. From the various statements 

 in the first volume of Cook's Third Voyage, and especially 

 in Chapters IV. and VI., it appears that these reefs are 

 of coral, and certainly do not belong to the barrier class ; 

 coloured red. — Toufoa and Kao, forming the western part of 

 the group, according to Forster, have no reefs ; the former 

 is an active volcano. — Vavao : there is a chart of this 

 singularly-formed island, by Espinoza : according to Mr. 

 Williams it consists of coral-rock : the Chevalier Dillon 

 informs me that it is not fringed; not coloured. Nor are 

 the islands of Latte and Amargura coloured, for I have not 

 seen plans of them on a large scale, and I do not know whether 

 they are fringed : Amargura is said (Athenaeum, 1848, p. 40) 

 to have been lately in violent eruption. 



Niouha, 16° S., 174° W., or Keppel Island of Wallis, or 

 Cocos Island : from a view and chart of this island, given in 



