The Mysterious Island by Jules Verne (ebook and pdf reader txt) 📖

one of the onagers, saw an immense black cloud rolling out from the summit of the volcano.

Herbert hastened to inform the others, who came at once to look at the mountain.

“Ah!” said Pencroff, “it is not vapor this time! It seems to me that the giant is not content to breathe, he must smoke!”

The image employed by the sailor expressed with exactness the change which had taken place at the mouth of the volcano. For three months the crater had been emitting vapors more or less intense, but there had been no ebullition of mineral matters. This time, instead of vapors, a thick column of smoke rose, like an immense mushroom, above the summit of the mountain.

“The chimney is on fire!” said Spilett.

“And we cannot put it out!” answered Herbert.

“It would be well to sweep the volcanoes,” said Neb, in good earnest.

“All right, Neb,” said Pencroff, laughing. “Will you undertake the job?”

Smith looked attentively at the thick smoke, and at the same time he listened as if he expected to detect some distant rumbling. Then, turning towards his companions, who were at some little distance, he said:—

“In truth, my friends, it cannot be denied that an important change has taken place. The volcanic matters are not only in a state of ebullition, they have taken fire, and, without doubt, we are threatened with an eruption!”

“Very well, sir; we will witness this eruption,” cried Pencroff, “and we will applaud it if it is a success! I don’t think that anything over there need worry us!”

“No, Pencroff,” answered Smith, “for the old course of the lava is open, and, thanks to its position, the crater has heretofore discharged towards the north. Nevertheless—”

“Nevertheless, since there is nothing to be gained by an eruption, it would be better not to have it,” said the reporter.

“Who knows?” replied the sailor. “There may be some useful and precious matter in the volcano, which it will be good enough to throw up, which will be advantageous for us!”

Smith shook his head, as a man who anticipated nothing good from this phenomenon. He did not think so lightly of the consequences of an eruption. If the lava, on account of the position of the crater, did not menace the wooded and cultivated portions of the island, other complications might arise. Eruptions are often accompanied by earthquakes, and an island formed, like Lincoln Island, of such different materials: basalt on one side, granite on another, lavas to the north, a mixed soil inland, material which, therefore, could not be solidly bound together, ran the risk of being torn asunder. If, therefore, the outpouring of volcanic substances did not threaten serious results, any movement in the framework upholding the island might be followed by the gravest consequences.

“It seems to me,” said Ayrton, who was kneeling down, with his ear to the ground, “it seems to me that I hear a noise, like the rattling of a wagon, loaded with iron bars.”

The colonists listened carefully, and were convinced that Ayrton was not mistaken. With the rumbling mingled subterranean roaring, making a sort of “rinfordzando,” which died away slowly, as if from some violent cleavage in the interior of the globe. But no detonation was heard, and it was fair to conclude that the smoke and vapor found a free passage through the central chimney, and, if the escape-pipe was sufficiently large, no explosion need be feared.

“Come,” said Pencroff at length, “shall we not go back to work? Let Mount Franklin smoke, brawl, moan, and vomit fire and flames as much as it chooses, but that is no excuse for us to quit work! Come, Ayrton, Neb, all of you, we want all hands to-day! I want our new Good Luck—we will keep the name, will we not?—to be moored in Balloon Harbor before two months are passed! So there is not an hour to be lost!”

All the colonists went down to the shipyard and worked steadily all day without giving too much thought to the volcano, which could not be seen from the beach before Granite House. But once or twice heavy shadows obscured the sunlight, and, as the was day perfectly clear, it was evident that thick clouds of smoke were passing between the sun’s disc and the island. Smith and Spilett noticed these sombre voyagers, and talked of the progress that the volcanic phenomenon was making, but they did not cease work. It was, moreover, of great importance, in every sense, that the ship should be finished with as little delay as possible. In the presence of events which might happen, the security of the colonists would be better assured. Who could say but that this ship might not, some day, be their sole refuge?

That evening, after supper, Smith, Spilett, and Herbert climbed to the plateau. It was already dark, and they would be able to distinguish whether flames or incandescent matter was mingled with the smoke and vapor of the volcano.

“The crater is on fire!” cried Herbert, who, more active than his companions, had reached the plateau the first.

Mount Franklin, six miles distant, appeared like a gigantic torch, with fuliginous flames twisting about its summit. So much smoke, such quantities of scoriæ and cinders, perhaps, were mingled with the flames, that their light did not glare upon the shades of night. But a sort of dull yellow glow spread over the island, making dimly visible the higher masses of forest. Enormous clouds obscured the heavens, between which glittered a few stars.

“The progress is rapid,” said the engineer.

“It is not astonishing,” answered the reporter. “The volcano has been awake for some time already. You remember, Cyrus, that the first vapors appeared about the time we were searching the mountain for the retreat of Captain Nemo. That was, if I am not mistaken, about the 15th of October.

“Yes” replied Herbert, “two months and a half ago.”

“The subterranean fires have been brooding for ten weeks,” continued Spilett, “and it is not astonishing that they develop now with this violence.”

“Do not you feel certain vibrations in the ground?” asked Smith.

“I think so,” replied Spilett, “but an earthquake—”

“I did not say that we were menaced by an earthquake,” said Smith, “and Heaven preserve us from one! No. These vibrations are due to the effervesence of the central fire. The crust of the earth is nothing more than the covering of a boiler, and you know how the covering of a boiler, under pressure, vibrates like a sonorous plate. That is what is happening at this moment.”

“What magnificent flames!” cried Herbert, as a sheaf of fire shot up, unobscured by the vapors, from the crater. From its midst luminous fragments and bright scintillations were thrown in every direction. Some of them pierced the dome of smoke, leaving behind them a perfect cloud of incandescent dust. This outpouring was accompanied by rapid detonations like the discharge of a battery of mitrailleuses.

Smith, the reporter, and the lad, after having passed an hour on Prospect Plateau, returned to Granite House. The engineer was pensive, and so much preoccupied that Spilett asked him if he anticipated any near danger.

“Yes and no,” responded Smith.

“But the worst that could happen,” said the reporter, “would be an earthquake, which would overthrow the island. And I don’t think that is to be feared, since the vapors and lava have a free passage of escape.”

“I do not fear an earthquake,” answered Smith, “of the ordinary kind, such as are brought about by the expansion of subterranean vapors. But other causes may bring about great disaster.”

“For example?”

“I do not know exactly—I must see—I must visit the mountain. In a few days I shall have made up my mind.”

Spilett asked no further questions, and soon, notwithstanding the increased violence of the volcano, the inhabitants of Granite House slept soundly.

Three days passed, the 4th 5th, and 6th of January, during which they worked on the ship, and, without explaining himself further, the engineer hastened the work as much as possible. Mount Franklin was covered with a sinister cloud, and with the flames vomited forth incandescent rocks, some of which fell back into the crater. This made Pencroff, who wished to look upon the phenomenon from an amusing side, say—

“Look! The giant plays at cup and ball! He is a juggler.”

And, indeed, the matters vomited forth fell back into the abyss, and it seemed as if the lavas, swollen by the interior pressure, had not yet risen to the mouth of the crater. At least, the fracture on the northeast, which was partly visible, did not pour forth any torrent on the western side of the mountain.

Meanwhile, however pressing the ship-building, other cares required the attention of the colonists in different parts of the island. First of all, they must go to the corral, where the moufflons and goats were enclosed, and renew the provisions for these animals. It was, therefore, agreed that Ayrton should go there the next day, and, as it was customary for but one to do this work, the others were surprised to hear the engineer say to Ayrton:——

“As you are going to the corral to-morrow, I will go with you.”

“Oh! Mr. Smith!” cried the sailor, “our time is very limited, and, if you go off in this way, we lose just that much help!”

“We will return the next day,” answered Smith, “but I must go to the corral—I wish to see about this eruption.”

“Eruption! Eruption!” answered Pencroff, with a dissatisfied air. “What is there important about this eruption? It don’t bother me!”

Notwithstanding the sailor’s protest, the exploration was decided upon for the next day. Herbert wanted to go with Smith, but he did not wish to annoy Pencroff by absenting himself. So, early the next morning, Smith and Ayrton started off with the wagon and onagers.

Over the forest hung huge clouds constantly supplied from Mount Franklin with fuliginous matter. They were evidently composed of heterogeneous substances. It was not altogether the smoke from the volcano that made them so heavy and opaque. Scoriæ in a state of powder, pulverized puzzolan and grey cinder as fine as the finest fecula, were held in suspension in their thick folds. These cinders remain in air, sometimes, for months at a time. After the eruption of 1783, in Iceland, for more than a year the atmosphere was so charged with volcanic powder that the sun’s rays were scarcely visible.

Usually, however, these pulverized matters fall to the earth at once, and it was so in this instance. Smith and Ayrton had hardly reached the corral, when a sort of black cloud, like fine gunpowder, fell, and instantly modified the whole aspect of the ground. Trees, fields, everything was covered with a coating several fingers deep. But, most fortunately, the wind was from the northeast, and the greater part of the cloud was carried off to sea.

“That is very curious,” said Ayrton.

“It is very serious,” answered Smith. This puzzolan, this pulverized pumice stone, all this mineral dust in short, shows how deep-seated is the commotion in the volcano.

“But there is nothing to be done.”

“Nothing, but to observe the progress of the phenomenon. Employ yourself, Ayrton, at the corral, and meanwhile I will go up to the sources of Red Creek and examine the state of the mountain on its western side. Then——”

“Then, sir?”

“Then we will make a visit to Crypt Dakkar—I wish to see—Well, I will come back for you in a couple of hours.”

Ayrton went into the corral, and while waiting for the return of the engineer occupied himself with the moufflons and goats, which showed a certain uneasiness before these first symptoms of an eruption.

Meantime Smith had ventured to climb the eastern spurs of the mountain, and he arrived at the place where his companions had discovered the sulphur spring on their first exploration.

How everything was changed! Instead of a single column of smoke, he counted thirteen escaping from the ground as if thrust upward by a piston. It was evident that the crust of earth was subjected in this place to a frightful pressure. The atmosphere was saturated with gases and aqueous vapors. Smith felt the volcanic tufa, the pulverulent cinders hardened by time, trembling beneath him, but he did not yet see any traces of fresh lava.

It was the same with the western slope of the mountain. Smoke and flames escaped from the crater; a hail of scoriæ fell upon the soil; but no lava flowed from the gullet of the crater, which was another proof that the volcanic matter had not attained the upper orifice of the central chimney.

“And I would be better satisfied if they had!” said Smith to himself. “At least I would be certain that the lavas had taken their accustomed route. Who knows if they may not burst forth from some new mouth? But that is not the danger! Captain Nemo