It was then five in the morning; and at that moment a shock was felt at the bows of the Nautilus. I knew that its spur had struck a block of ice. It must have been a false manoeuvre, for this submarine tunnel, obstructed by blocks, was not very easy navigation. I thought that Captain Nemo, by changing his course, would either turn these obstacles or else follow the windings of the tunnel. In any case, the road before us could not be entirely blocked. But, contrary to my expectations, the Nautilus took a decided retrograde motion.
"We are going backwards?" said Conseil.
"Yes," I replied. "This end of the tunnel can have no egress."
"And then?"
"Then," said I, "the working is easy. We must go back again, and go out at the southern opening. That is all."
In speaking thus, I wished to appear more confident than I really was. But the retrograde motion of the Nautilus was increasing; and, reversing the screw, it carried us at great speed.
"It will be a hindrance," said Ned.
"What does it matter, some hours more or less, provided we get out at last?"
"Yes," repeated Ned Land, "provided we do get out at last!"
For a short time I walked from the saloon to the library. My companions were silent. I soon threw myself on an ottoman, and took a book, which my eyes overran mechanically. A quarter of an hour after, Conseil, approaching me, said, "Is what you are reading very interesting, sir?"
"Very interesting!" I replied.
"I should think so, sir. It is your own book you are reading."
"My book?"
And indeed I was holding in my hand the work on the Great Submarine Depths. I did not even dream of it. I closed the book and returned to my walk. Ned and Conseil rose to go.
"Stay here, my friends," said I, detaining them. "Let us remain together until we are out of this block."
"As you please, sir," Conseil replied.
Some hours passed. I often looked at the instruments hanging from the partition. The manometer showed that the Nautilus kept at a constant depth of more than three hundred yards; the compass still pointed to south; the log indicated a speed of twenty miles an hour, which, in such a cramped space, was very great. But Captain Nemo knew that he could not hasten too much, and that minutes were worth ages to us. At twenty-five minutes past eight a second shock took place, this time from behind. I turned pale. My companions were close by my side. I seized Conseil's hand. Our looks expressed our feelings better than words. At this moment the Captain entered the saloon. I went up to him.
"Our course is barred southward?" I asked.
"Yes, sir. The iceberg has shifted and closed every outlet."
"We are blocked up then?"
WANT OF AIR
Thus around the Nautilus, above and below, was an impenetrable wall of ice. We were prisoners to the iceberg. I watched the Captain. His countenance had resumed its habitual imperturbability.
"Gentlemen," he said calmly, "there are two ways of dying in the circumstances in which we are placed." (This puzzling person had the air of a mathematical professor lecturing to his pupils.) "The first is to be crushed; the second is to die of suffocation. I do not speak of the possibility of dying of hunger, for the supply of provisions in the Nautilus will certainly last longer than we shall. Let us, then, calculate our chances."
"As to suffocation, Captain," I replied, "that is not to be feared, because our reservoirs are full."
"Just so; but they will only yield two days' supply of air. Now, for thirty-six hours we have been hidden under the water, and already the heavy atmosphere of the Nautilus requires renewal. In forty-eight hours our reserve will be exhausted."
"Well, Captain, can we be delivered before forty-eight hours?"
"We will attempt it, at least, by piercing the wall that surrounds us."
"On which side?"
"Sound will tell us. I am going to run the Nautilus aground on the lower bank, and my men will attack the iceberg on the side that is least thick."
