The next day Ivan said to the commissioners, "We have now laid pipes four inches in diameter to work upon the very heart of the fire. So soon as I am ready we shall set the high-pressure machine at work. This will empty in four hours ten thousand buckets of fluid on the burning mass."
"The devil take it!" cried Spitzhase. "Will this farce never have an end until the escaped gas blows up the colliery, and makes of it and of us a new Pompeii?"
"Do not be afraid. I have thought of this danger. We have taken care to stop all the outlets to the quarry gallery with sand-bags. We have walled up every possible fissure, crevice, and exit. The entrance to the well-shaft has been provided with a strong iron door, over which we have fastened a thick bed of clay. If, therefore, it should happen that in the gallery, where the conflagration is at its worst, and where the fluid must be poured freely, the mass of gas should develop in such force that it must explode, then the iron door will prove our salvation. It will resist all attack, and the force of the gas will be broken."
The members of the commission shook with fright. Here was a pleasant prospect! Ivan, however, had no time to spare on reassuring them; the crisis was at hand, and he had still much to do. Prudence, foresight was necessary. At mid-day he returned to the quarry gallery.
As the clock struck twelve he gave the signal at which the large suction-pump was to be set in motion. He remained from this time at his post, never leaving the machine until the work was finished. To their honor be it spoken, the three commissioners remained with him; they kept their places without moving, never speaking a word. During the awful time that followed no voice was heard but that of Ivan. Soon after the signal was given a rushing sound was heard underground, faint at first, but growing louder. It sounded as if in the distance water was pouring from an open sluice.
At first the machine was worked at only half its strength. After half an hour or so there mingled with the rushing sound a great tumult, as if many bells were vibrating in the air. The noise did not die away; on the contrary, the vibration grew every moment stronger.
The earth was in labor; the ground heaved and trembled, and those who felt its throes trembled also. The earth's sufferings were shared by her children. Only one man was calm; the master-spirit was not afraid.
With close attention Ivan watched the pendulum and the thermometer of the machine; he marked the variations in the condition of the barometer, the ozonometer, and electrometer, writing his observations in his note-book. After another hour he made a sign to the man working the machine to put on more pressure.
Thereupon arose from below a terrible uproar; it was the battle of the Cyclops. The bowels of the earth sent up a dull roar like the rolling of thunder; occasionally came a shock as of an earthquake. The houses began to rock, the tops of the tall trees and the cross upon the tower tottered, and its fall added to the anxiety felt by the entire valley. The underground fight grew every moment fiercer; the giants joined issue with their foes. They howled in rage; they put their gigantic shoulders together and tried to upset the earth. To their cries was added the bellowing of the hurricane confined in the cave, and the tumult was indescribable.
The listeners to this fearful scene looked with a stony stare of horror; they were speechless, but their look seemed to say, "What rash act have you done? Are you inciting the spirits who dwell under the earth to war against one another?"