are found particularly in the rough beds of the sea, near the surface; and consequently it is from the upper part that they begin their operations, in which they bury themselves by degrees with the debris of the secretions that support them. Such is, at least, Darwin's theory, who thus explains the formation of the atolls, a superior theory (to my mind) to that given of the foundation of the madreporical works, summits of mountains or volcanoes, that are submerged some feet below the level of the sea.
I could observe closely these curious walls, for perpendicularly they were more than 300 yards deep, and our electric sheets lighted up this calcareous matter brilliantly. Replying to a question Conseil asked me as to the time these colossal barriers took to be raised, I astonished him much by telling him that learned men reckoned it about the eighth of an inch in a hundred years.
Towards evening Clermont-Tonnerre was lost in the distance, and the route of the Nautilus was sensibly changed. After having crossed the tropic of Capricorn in 135° longitude, it sailed W.N.W., making again for the tropical zone. Although the summer sun was very strong, we did not suffer from heat, for at fifteen or twenty fathoms below the surface, the temperature did not rise above from ten to twelve degrees.
On 15th of December, we left to the east the bewitching group of the Societies and the graceful Tahiti, queen of the Pacific. I saw in the morning, some miles to the windward, the elevated summits of the island. These waters furnished our table with excellent fish, mackerel, bonitos, and some varieties of a sea-serpent.
On the 25th of December the Nautilus sailed into the midst of the New Hebrides, discovered by Quiros in 1606, and that Bougainville explored in 1768, and to which Cook gave its present name in 1773. This group is composed principally of nine large islands, that form a band of 120 leagues N.N.S. to S.S.W., between 15° and 2° S. lat., and 164 deg. and 168° long. We passed tolerably near to the Island of Aurou, that at noon looked like a mass of green woods, surmounted by a peak of great height.
That day being Christmas Day, Ned Land seemed to regret sorely the non-celebration of "Christmas," the family fete of which Protestants are so fond. I had not seen Captain Nemo for a week, when, on the morning of the 27th, he came into the large drawing-room, always seeming as if he had seen you five minutes before. I was busily tracing the route of the Nautilus on the planisphere. The Captain came up to me, put his finger on one spot on the chart, and said this single word.
"Vanikoro."
The effect was magical! It was the name of the islands on which La Perouse had been lost! I rose suddenly.
"The Nautilus has brought us to Vanikoro?" I asked.
"Yes, Professor," said the Captain.
"And I can visit the celebrated islands where the Boussole and the Astrolabe struck?"
"If you like, Professor."
"When shall we be there?"
"We are there now."
Followed by Captain Nemo, I went up on to the platform, and greedily scanned the horizon.
To the N.E. two volcanic islands emerged of unequal size, surrounded by a coral reef that measured forty miles in circumference. We were close to Vanikoro, really the one to which Dumont d'Urville gave the name of Isle de la Recherche, and exactly facing the little harbour of Vanou, situated in 16° 4' S. lat., and 164° 32' E. long. The earth seemed covered with verdure from the shore to the summits in the interior, that were crowned by Mount Kapogo, 476 feet high. The Nautilus, having passed the outer belt of rocks by a narrow strait, found itself among breakers where the sea was from thirty to forty fathoms deep. Under the verdant shade of some mangroves I perceived some savages, who appeared greatly surprised at our approach. In the long black body, moving between wind and water, did they not see some formidable cetacean that they regarded with suspicion?
Just then Captain Nemo asked me what I knew about the wreck of La Perouse.
"Only what everyone knows, Captain," I replied.
"And could you tell me what everyone knows about it?" he inquired, ironically.
"Easily."
I related to him all that the last works of Dumont d'Urville had made known—works from which the following is a brief account.
La Perouse, and his second, Captain de Langle, were sent by Louis XVI, in 1785, on a voyage of circumnavigation. They embarked in the corvettes Boussole and the Astrolabe, neither of which were again heard of. In 1791, the French Government, justly uneasy as to the fate of these two sloops, manned two large merchantmen, the Recherche and the Esperance, which left Brest the 28th of September under the command of Bruni d'Entrecasteaux.
Two months after, they learned from Bowen, commander of the Albemarle, that the debris of shipwrecked vessels had been seen on the coasts of New Georgia. But D'Entrecasteaux, ignoring this communication—rather uncertain, besides—directed his course towards the Admiralty Islands, mentioned in a report of Captain Hunter's as being the place where La Perouse was wrecked.
They sought in vain. The Esperance and the Recherche passed before Vanikoro without stopping there, and, in fact, this voyage was most disastrous, as it cost D'Entrecasteaux his life, and those of two of his lieutenants, besides several of his crew.
Captain Dillon, a shrewd old Pacific sailor, was the first to find unmistakable traces of the wrecks. On the 15th of May, 1824, his vessel, the St. Patrick, passed close to Tikopia, one of the New Hebrides. There a Lascar came alongside in a canoe, sold him the handle of a sword in silver that bore the print of characters engraved on the hilt. The Lascar pretended that six years before, during a stay at Vanikoro, he had seen two Europeans that belonged to some vessels that had run aground on the reefs some years ago.
Dillon guessed that he meant La Perouse, whose disappearance had troubled the whole world. He tried to get on to Vanikoro, where, according to the Lascar, he would find numerous debris of the wreck, but winds and tides prevented him.
Dillon returned to Calcutta. There he interested the Asiatic Society and the Indian Company in his discovery. A vessel, to which was given the name of the Recherche, was put at his disposal, and he set out, 23rd January, 1827, accompanied by a French agent.
The Recherche, after touching at several points in the Pacific, cast anchor before Vanikoro, 7th July, 1827, in that same harbour of Vanou where the Nautilus was at this time.
There it collected numerous relics of the wreck—iron utensils, anchors, pulley-strops, swivel-guns, an 18 lb. shot, fragments of astronomical instruments, a piece of crown work, and a bronze clock, bearing this inscription—"Bazin m'a fait," the mark of the foundry of the arsenal at Brest about 1785. There could be no further doubt.
Dillon, having made all inquiries, stayed in the unlucky place till October. Then he quitted Vanikoro, and directed his course towards New Zealand; put into Calcutta, 7th April, 1828, and returned to France, where he was warmly welcomed by Charles X.
But at the same time, without knowing Dillon's movements, Dumont d'Urville had already set out to find the scene of the wreck. And they had learned from a whaler that some medals and a cross of St. Louis had been found in the hands of some savages of Louisiade and New Caledonia. Dumont d'Urville, commander of the Astrolabe, had then sailed, and two months after Dillon had left Vanikoro he put into Hobart Town. There he learned the results of Dillon's inquiries, and found that a certain James Hobbs, second lieutenant of the Union of Calcutta, after landing on an island situated 8° 18' S. lat., and 156° 30' E. long., had seen some iron bars and red stuffs used by the natives of these parts. Dumont d'Urville, much perplexed, and not knowing how to credit the reports of low-class journals, decided to follow Dillon's track.
On the 10th of February, 1828, the Astrolabe appeared off Tikopia, and took as guide and interpreter a deserter found on the island; made his way to Vanikoro, sighted it on the 12th inst., lay among the reefs until the 14th, and not until the 20th did he cast anchor within the barrier in the harbour of Vanou.
On the 23rd, several officers went round the island and brought back some unimportant trifles. The natives, adopting a system of denials and