Part 32 (2/2)
”This is what Captain Nemo feared,” murmured Cyrus Harding, changing countenance. ”We must go to the end, notwithstanding.”
”Forward!” replied Ayrton, bending to his oars and directing the boat towards the head of the cavern.
Twenty-five minutes after entering the mouth of the grotto the boat reached the extreme end.
Cyrus Harding then, standing up, cast the light of the lamp upon the walls of the cavern which separated it from the central shaft of the volcano. What was the thickness of this wall? It might be ten feet or a hundred feet--it was impossible to say. But the subterranean sounds were too perceptible to allow of the supposition that it was of any great thickness.
The engineer, after having explored the wall at a certain height horizontally, fastened the lamp to the end of an oar, and again surveyed the basaltic wall at a greater elevation.
There, through scarcely visible clefts and joinings, escaped a pungent vapour, which infected the atmosphere of the cavern. The wall was broken by large cracks, some of which extended to within two or three feet of the water's edge.
Cyrus Harding thought for a brief s.p.a.ce. Then he said in a low voice--
”Yes! the captain was right! The danger lies there, and a terrible danger!”
Ayrton said not a word, but, upon a sign from Cyrus Harding, resumed the oars, and half an hour later the engineer and he reached the entrance of Dakkar Grotto.
CHAPTER NINETEEN.
CYRUS HARDING GIVES AN ACCOUNT OF HIS EXPLORATION--THE CONSTRUCTION OF THE s.h.i.+P PUSHED FORWARD--A LAST VISIT TO THE CORRAL--THE BATTLE BETWEEN FIRE AND WATER--ALL THAT REMAINS OF THE ISLAND--IT IS DECIDED TO LAUNCH THE VESSEL--THE NIGHT OF THE 8TH OF MARCH.
The next day, the 8th of January, after a day and night pa.s.sed at the corral, where they left all in order, Cyrus Harding and Ayrton arrived at Granite House.
The engineer immediately called his companions together, and informed them of the imminent danger which threatened Lincoln Island, and from which no human power could deliver them.
”My friends,” he said, and his voice betrayed the depth of his emotion, ”our island is not among those which will endure while this earth endures. It is doomed to more or less speedy destruction, the cause of which it bears within itself, and from which nothing can save it.”
The colonists looked at each other, then at the engineer. They did not clearly comprehend him.
”Explain yourself, Cyrus!” said Gideon Spilett.
”I will do so,” replied Cyrus Harding, ”or rather I will simply afford you the explanation which, during our few minutes of private conversation, was given me by Captain Nemo.”
”Captain Nemo!” exclaimed the colonists.
”Yes, and it was the last service he desired to render us before his death!”
”The last service!” exclaimed Pencroft, ”the last service! You will see that though he is dead he will render us others yet!”
”But what did the captain say?” inquired the reporter.
”I will tell you, my friends,” said the engineer. ”Lincoln Island does not resemble the other islands of the Pacific, and a fact of which Captain Nemo has made me cognisant must sooner or later bring about the subversion of its foundation.”
”Nonsense! Lincoln Island, it can't be!” cried Pencroft, who, in spite of the respect he felt for Cyrus Harding, could not prevent a gesture of incredulity.
”Listen, Pencroft,” resumed the engineer, ”I will tell you what Captain Nemo communicated to me, and which I myself confirmed yesterday, during the exploration of Dakkar Grotto. This cavern stretches under the island as far as the volcano, and is only separated from its central shaft by the wall which terminates it. Now, this wall is seamed with fissures and clefts which already allow the sulphureous gases generated in the interior of the volcano to escape.”
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