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APPENDIX. 



and fifty years ago. There remains, then, to be 

 made a complete survey of all these islands. As 

 to the islands near them, seen by Maurell, it is 

 not likely that they are the same, as some have 

 supposed. This is another reason why they should 

 be all explored with the greatest precision. 



IX. Admiralty Islands. It is much to be wished 

 that the islands seen by Maurell, to the eastward 

 of the Great Admiralty Island, should be explored, 

 since we know that Maurell's account of his dis- 

 coveries does not satisfy the hydrographer. 



X. New Britain. AdmiralD'Entrecasteauxhas 

 seen and determined, with his usual exactness, the 

 islands situated along the north coast of New 

 Britain ; but he has not been able to lay down the 

 coast itself, which he has seen only at a distance, 

 and some parts not all. 



XI.* Low Islands. Captain Hagemuster, of the 

 Russian navy, discovered, in the year 1830, an 

 island to the westward of King George's Islands. 

 This island cannot be any other than Schouten's 

 Waterlandt. Captain Wilson sailed between two 

 islands, which he took to be King George's Is- 

 lands. Most navigators have been of the same 

 opinion; although there is a difference of longi- 

 tude of more than a degree between the islands 

 seen by Wilson and King George's Islands. Cap- 

 tain Duperrey (an excellent authority, as every 

 hydrographer will readily admit,) is of a different 

 opinion ; he maintains that the two islands be- 

 tween which Wilson sailed are not King George's 

 Islands, but are situated to the westward of them. 

 He thinks that the island seen by Captain Hage- 

 muster, which I take to be Waterlandt, is one of the 

 two islands ; and that Captain Hagemuster has not 

 seen the other. In order to refute Captain Du- 

 perrey's hypothesis, the second island, which, ac- 

 cording to him, Captain Hagemuster might not 

 have perceived, ought to be searched for, to 

 the westward of Captain Hagemuster's island ; 

 if it really does exist, it cannot be at a greater 

 distance than about fifteen or twenty miles. 



XII.* Commodore Byron's Isles of Disappoint- 

 ment have not been visited since their first discovery 

 in 1765. I have endeavoured to settle their longi- 

 tude at 140 42' W. (page 87 of my supplement); 

 but this being only an approximation, they ought 

 to be surveyed at least visited anew. 



XIII*. By my memoirs, page 281, and supple- 

 ment, page 90, you will perceive that there is a 

 difference of 27' between Captain Bellinghausen's 

 and Captain Kotzebue's longitude of the west point 

 of Prince of Wales's Island * and the island 

 situated to the westward of it f. What may be 

 the cause of this difference ? since the two navi- 

 gators do not differ, either before or after, more 

 than three minutes. Either the length of Vlighen 

 Island has been overrated by Captain Kotzebue, 

 or some other error has crept into the longitude of 

 either the one or the other. As both are excellent 

 observers, it would be very desirable to settle this 

 point, by examining and surveying carefully all 

 the islands lying to the westward and eastward of 

 Vlighen Island, and determine with the greatest 

 precision the width of the channels separating the 

 different islands, as well as the exact length of 



* On some charts this island is named Dean's Isle ; on 

 my charts Vlighen Isle. 



t By Captain Porter called Gamble ; by Captain Kotze- 

 bue, Krusenstern Island. 



Vlighen or Prince of Wales's Island : the error 

 will, most likely, be detected in the length of that 

 isle. 



XIV.* There is a difference of 17' in the longi- 

 tude of the isle Clermont de Tonnerre between 

 Captain Duperrey and Captain Beechey. At 

 Serle Island, close to it, there is hardly any dif- 

 ference at all. The same difference of 17' exists 

 in the longitude of Prince William Henry, which 

 Captain Beechey has proved to be the same with 

 Captain Duperrey's isle Lortingo ; whereas at 

 Mollu Island, both Captains Beechey and Du- 

 perrey agree perfectly well. It would be worth 

 while to search for the cause of such anomalies. 



XV.* Captain Beechey is of opinion that Cap- 

 tain Duperrey's isle Clermont de Tonnerre is one 

 and the same with the island of Minerva. Cap- 

 tain Duperrey, on the contrary, maintains that the 

 island Minerva 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 

 JRaraka. 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 W. 



XVII.* I have placed on my chart of the Low 

 Islands, several islands, the position of which is 

 rather doubtful ; for instance, the I3unyer'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 

 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 dis- 

 covered a small group, which he named Islands of 

 Danger. Notwithstanding a difference of latitude 

 of half a degree, the two groups have been con- 

 sidered 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. Cap- 

 tain 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 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 Frey- 

 cinet's chart there is to be seen, to the south-west 

 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 Assump- 



