204 APPENDIX. 



Gilbert Group. — The chart of this group, given in the 

 Atlas of the Coquille's Voyage, at once shows that it is 

 composed of ten well-characterised atolls. In D'Urville 

 and Lottin's chart, Syde?iham is written with a capital letter, 

 signifying that it is high ; but this certainly is not the 

 case, for it is a perfectly characterised atoll, and a sketch, 

 showing how low it is, is given in the Coquille's Atlas. 

 Some narrow strip-like reefs project from the southern side 

 of Drwmnond atoll, and render it irregular. The southern 

 island of the group is called Chase (in some charts, 

 Rotches) ; of this I can find no account, but Mr. F. D. 

 Bennett discovered (Geografih. Journ., vol. vii. p. 229) 

 a low extensive island in nearly the same latitude, about 

 three degrees westward of the longitude assigned to 

 Rotches, but very probably it is the same island. Mr. 

 Bennett informs me that the man at the masthead reported 

 an appearance of lagoon-water in the centre ; and, therefore, 

 considering its position, I have coloured it blue. — Pitt 

 Isld., at the extreme northern point of the group, is left 

 uncoloured, as its exact position and nature is not known. 

 — Byron Isld., which lies a little to the eastward, does not 

 appear to have been visited since Commodore Byron's 

 voyage, and it was then seen only from a distance of 18 

 miles ; it is said to be low ; uncoloured. 



Ocean, Pleasant, and Atlantic Islds. all lie considerably 

 to the west of the Gilbert group : I have been unable to find 

 any distinct account of them. Ocean Island is written with 

 small letters in the French chart, but in Krusenstern's 

 Memoir it is said to be high. 



Marshall Group. — We are well acquainted with this 

 group from the excellent charts of the separate islands, made 

 during the two voyages of Kotzebue : a reduced one of the 

 whole group may be easily seen in Krusenstern's Atlas, and 



