358 APPENDIX. 



XVIII.* The Islands of San Bernardo and the Islands of Danger, — 

 Mendane discovered a group of islands, named by him San Bernardo. 

 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, how- 

 ever, 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 determined 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 Expedi- 

 tion should extend its exploratory researches to the northern hemi- 

 sphere, this doubtful point should be settled. 



XX.* Caroline Islands. — These islands have been so well surveyed 

 by Captain Duperrey and Captain Lutke, that there is very little now 

 left to be done concerning them. I shall, however, point out here some 

 islands that require to be determined with great precision : 1. The 

 island named by Captain Morell, Fasolis, is most likely the same with 

 Captain Lutke's, Farroilep ; but a difference of 21' in latitude, makes 

 this doubtful. 2. Island Lydia, on Captain Duperrey's chart. We do 

 not know by whom it has been discovered, nor who has determined its 

 situation. 3. I have endeavoured to prove, in my Supplementary 

 Memoir of the Caroline Islands, that the islands Bordelaire, Fame, 

 Campbell, and the island St. Augustine, are one and the same. This 

 hypothesis requires to be verified. 4. The Monteverde Islands ought 

 to be surveyed; what Captains Monteverde and Morell, the only 

 navigators who have seen them, have said of them, is not sufficiently 

 satisfactory. 5. We see on Captain Duperrey's chart of the Caroline 

 Islands, several islands, of which we know nothing more than the 



