372 
APPENDIX. 
is the same as Serle Island. I am of this latter opinion; although 
the solution of this problem will much depend upon the distance of 
the island Clermont de Tonnerre from Serle Island, which is much 
less on Duperrey's chart than on Captain Beechey's. 
*XVI. There has been lately discovered an island of considerable 
extent, of the name of Raraha. It would be well to examine it, 
since the account given of it is not quite satisfactory. It is stated to 
be situated in 16° 3' S., and 145° 0' W. 
*XVII. I have placed on my chart of the Low Islands, several 
islands, the position of which is rather doubtful; for instance, the 
Bunyer's Group of Turnbull, the island of Britomart, the islands 
discovered by Quiros, and several others. In order to have any 
certainty about their existence and precise position, it is necessary 
to search for and make a survey of them. 
*XVIII. The Islands of San Bernardo and the Island of Danger. 
— Mendane discovered a group of islands, named by him San Ber- 
nardo. These islands have been seen by Captains Freycinet and 
Bellinghausen. Not far from them Byron discovered a small group, 
which he named Islands of Danger. Notwithstanding a difference 
of latitude of half a degree, the two groups have been considered as 
one and the same. It has not been thought impossible that in 
Byron's latitudes there might have been a typographical error: 
besides, none, of all the navigators who have passed here, have ever 
found a second group, which they could not have missed if it really 
existed. Captain Duperrey, however, who is, as I have said above, a 
high authority in whatever relates to the hydrography of the South 
Seas, is of a different opinion : he maintains that Byron's Islands of 
Danger do exist. In order to settle that question, it is necessary to 
search under the meridian of the islands San Bernardo, as deter- 
mined by Captain Bellinghausen, for these Islands of Danger in the 
latitude assigned to them by Byron, as well as for the chain of rocks 
of which he speaks, and which are situated, according to him, to the 
eastward. This has not been done yet, and it would be very desirable 
if it was done, in order not to leave the least doubt on the subject. 
*XIX. Marianne Islands.— On Captain Freycinet's chart there is 
to be seen, to the southwest of the Island of Assumption, rocks, by the 
name of Mary's. Rocks of the same name have been seen by La 
Perouse, to the northward of Assumption Island. In case the Ex- 
pedition should extend its exploratory researches to the northern 
hemisphere, this doubtful point should be settled. 
