192 APPENDIX. 



exist, yet the shore is in many places lined by coral-rock, sc 

 that a boat grounds on this formation. Hence these islands 

 ought probably to come within the class of fringed islands 

 and be coloured red ; but as I am determined to err on the 

 cautious side, I have left them uncoloured. 



Cook or Harvey and Austral Isl. — Pahnersion Island 

 is minutely described as an atoll by Capt. Cook during his 

 voyage in 1774; coloured blue. Aitutaki was partially 

 surveyed by the Beagle (see map accompanying Voyages of 

 Adveiiture a?id Beagle) ; the land is hilly, sloping gently to 

 the beach ; the highest point is 360 feet ; on the southern 

 side the reef projects five miles from the land : off this 

 point the Beagle found no bottom with 270 fathoms: the 

 reef is surmounted by many low coral-islets. Although 

 within the reef the water is exceedingly shallow, not being 

 more than a few feet deep, as I am informed by the Rev. J. 

 Williams, nevertheless, from the great extension of this reef 

 into a profoundly deep ocean, this island probably belongs, 

 on the principle lately adverted to, to the barrier class, and 

 I have coloured it pale blue ; although with much hesita- 

 tion. — Manonai or Harvey Isld. The highest point is 

 about 50 feet : the Rev. J. Williams informs me that the 

 reef here, although it lies far from the shore, is less distant 

 than at Aitutaki, but the water within the reef is rather 

 deeper: I have also coloured this pale blue, with many 

 doubts. — Round Mitiaro Isld., as I am informed by Mr. 

 Williams, the reef is attached to the shore ; coloured red. — 

 Mauki or Maouti ; the reef round this isld. (under the 

 name of Parry Isld., in the Voyage of H.M.S. Blonde^ p. 

 209) is described as a coral-flat, only 50 yards wide, and 

 two feet under water. This statement has been corro- 

 borated by Mr. Williams, who calls the reef attached; 

 coloured red. — Atiu^ or Wateeo; a moderately elevated, 



