Notwithstanding the theories of Professor Liedenbrock, a violent heat did at that time brood within the body of the spheroid. Its action was felt to the very last coats of the terrestrial crust; the plants, unacquainted with the beneficent influences of the sun, yielded neither flowers nor scent. But their roots drew vigorous life from the burning soil of the early days of this planet.
There were but few trees. Herbaceous plants alone existed. There were tall grasses, ferns, lycopods, besides Sigillaria, Asterophyllites, now scarce plants, but then the species might be counted by thousands.
The coal measures owe their origin to this period of profuse vegetation. The yet elastic and yielding crust of the earth obeyed the fluid forces beneath. Thence innumerable fissures and depressions. The plants, sunk underneath the waters, formed by degrees into vast accumulated masses.
Then came the chemical action of nature; in the depths of the seas the vegetable accumulations first became peat; then, acted upon by generated gases and the heat of fermentation, they underwent a process of complete mineralization.
Thus were formed those immense coalfields, which nevertheless, are not inexhaustible, and which three centuries at the present accelerated rate of consumption will exhaust unless the industrial world will devise a remedy.
These reflections came into my mind whilst I was contemplating the mineral wealth stored up in this portion of the globe. These no doubt, I thought, will never be discovered; the working of such deep mines would involve too large an outlay, and where would be the use as long as coal is yet spread far and wide near the surface? Such as my eyes behold these virgin stores, such they will be when this world comes to an end.
But still we marched on, and I alone was forgetting the length of the way by losing myself in the midst of geological contemplations. The temperature remained what it had been during our passage through the lava and schists. Only my sense of smell was forcibly affected by an odour of protocarbide of hydrogen. I immediately recognised in this gallery the presence of a considerable quantity of the dangerous gas called by miners firedamp, the explosion of which has often occasioned such dreadful catastrophes.
Happily, our light was from Ruhmkorff’s ingenious apparatus. If unfortunately we had explored this gallery with torches, a terrible explosion would have put an end to travelling and travellers at one stroke.
This excursion through the coal mine lasted till night. My uncle scarcely could restrain his impatience at the horizontal road. The darkness, always deep twenty yards before us, prevented us from estimating the length of the gallery; and I was beginning to think it must be endless, when suddenly at six o’clock a wall very unexpectedly stood before us. Right or left, top or bottom, there was no road farther; we were at the end of a blind alley.
“Very well, it’s all right!” cried my uncle, “now, at any rate, we shall know what we are about. We are not in Saknussemm’s road, and all we have to do is to go back. Let us take a night’s rest, and in three days we shall get to the fork in the road.”
“Yes,” said I, “if we have any strength left.”
“Why not?”
“Because tomorrow we shall have no water.”
“Nor courage either?” asked my uncle severely.
I dared make no answer.
XXI
Compassion Fuses the Professor’s Heart
Next day we started early. We had to hasten forward. It was a three days’ march to the cross roads.
I will not speak of the sufferings we endured in our return. My uncle bore them with the angry impatience of a man obliged to own his weakness; Hans with the resignation of his passive nature; I, I confess, with complaints and expressions of despair. I had no spirit to oppose this ill fortune.
As I had foretold, the water failed entirely by the end of the first day’s retrograde march. Our fluid aliment was now nothing but gin; but this infernal fluid burned my throat, and I could not even endure the sight of it. I found the temperature and the air stifling. Fatigue paralysed my limbs. More than once I dropped down motionless. Then there was a halt; and my uncle and the Icelander did their best to restore me. But I saw that the former was struggling painfully against excessive fatigue and the tortures of thirst.
At last, on Tuesday, July 8, we arrived on our hands and knees, and half dead, at the junction of the two roads. There I dropped like a lifeless lump, extended on the lava soil. It was ten in the morning.
Hans and my uncle, clinging to the wall, tried to nibble a few bits of biscuit. Long moans escaped from my swollen lips.
After some time my uncle approached me and raised me in his arms.
“Poor boy!” said he, in genuine tones of compassion.
I was touched with these words, not being accustomed to see the excitable Professor in a softened mood. I grasped his trembling hands in mine. He let me hold them and looked at me. His eyes were moistened.
Then I saw him take the flask that was hanging at his side. To my amazement he placed it on my lips.
“Drink!” said he.
Had I heard him? Was my uncle beside himself? I stared at, him stupidly, and felt as if I could not understand him.
“Drink!” he said again.
And raising his flask he emptied it every drop between my lips.
Oh! infinite pleasure! a slender sip of water came to moisten my burning mouth. It was but one sip but it was enough to recall my ebbing life.
I thanked my uncle with clasped hands.
“Yes,” he said, “a draught of water; but it is the very last—you hear!—the last. I had kept it as a precious treasure at the bottom of my flask. Twenty times, nay, a hundred times, have I fought against a frightful impulse to drink it off. But no, Axel, I kept
