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Updated: June 13, 2025
On the 15th February, 1823, the Coquille set sail from Conception for Payta, the place where, in 1595, Alvarez de Mendana and Fernandez de Quiros took ship on the voyage of discovery that has made their names famous; but after a fortnight's sail the corvette was becalmed in the vicinity of the island of Laurenzo, and Duperrey resolved to put in at Callao to obtain fresh provisions.
In fact, according to the astronomer Hansteen, this magnetic pole is located fairly close to latitude 70 degrees and longitude 130 degrees, or abiding by the observations of Louis-Isidore Duperrey, in longitude 135 degrees and latitude 70 degrees 30'. Hence we had to transport compasses to different parts of the ship, take many readings, and strike an average.
MAURUA, in the Society Archipelago; from the survey by Captain Duperrey in the "Coquille:" height of land about eight hundred feet. POUYNIPETE, or SENIAVINE, in the Caroline Archipelago; from the survey by Admiral Lutke.
The scale is .57 of an inch to a mile; it is taken from the "Atlas of the Voyage of the 'Coquille'," by Duperrey. In the succeeding chapter it will be shown that reef-building polypifers cannot flourish at great depths, for instance, it is highly improbable that they could exist at a quarter of the depth represented by the plummet on the right hand of the woodcut.
These are the groups usually called Mac-Askyll and Duperrey, the people resembling those of Ualan, who, as well as those of the Radak Islands, give to their chiefs the title of "Tamon."
The services rendered by him in 1819-21 in a hydrographic expedition, in 1822 and 1825 on the Coquille, under Captain Duperrey, and lastly in 1826-29 on the Astrolabe, had given him an amount of experience which justified him in submitting his peculiar views to the government, and to supplement so to speak the mass of information collected by himself and others in these little known latitudes.
The officers had collected sufficient information in these latitudes to determine the position of the southern magnetic pole, but the results obtained by them did not accord with those given by Duperrey, Wilkes, and Ross.
The inhabitants are generous and peaceably disposed, and they will soon be in a position to supply a kind of food most essential to sailors, from the progeny of the sows that we left with them, a gift which excited a very lively gratitude." Subsequent events, however, have not verified the forecast made by Duperrey.
"In the geographical department," said Duperrey, "we would propose to verify or to rectify, either by direct, or by chronometrical observations, the position of a great number of points in different parts of the globe, especially among the numerous island groups of the Pacific Ocean, notorious for shipwrecks, and so remarkable for the character and the form of the shoals, sandbanks, and reefs, of which they in part consist; also to trace new routes through the Dangerous Archipelago and the Society Islands, side by side with those taken by Quiros, Wallis, Bougainville, and Cook; to carry on hydrographical surveys in continuation of those made in the voyages of D'Entrecasteaux and of Freycinet in Polynesia, New Holland, and the Molucca Islands; and particularly to visit the Caroline Islands, discovered by Magellan, about which, with the exception of the eastern side, examined in our own time by Captain Kotzebue, we have only very vague information, communicated by the missionaries, and by them learnt from stories told by savages who had lost their way and were driven in their canoes upon the Marianne Islands.
Duperrey remarks that "it is easy to predict that this island of Ualan will one day become of considerable importance. It is situated in the midst of the Caroline group, in the course of ships sailing from New Holland to China, and presents good ports for careening vessels, ample supplies of water, and provisions of various kinds.
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