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The doctor might have escaped this intense heat by rising into a higher range, but, in order to do so, he would have had to consume a large quantity of water, a thing that had now become impossible. He contented himself, therefore, with keeping the balloon at one hundred feet from the ground, and, at that elevation, a feeble current drove it toward the western horizon.
The breakfast consisted of a little dried meat and pemmican. By noon, the Victoria had advanced only a few miles.
“We cannot go any faster,” said the doctor; “we no longer command—we have to obey.”
“Ah! doctor, here is one of those occasions when a propeller would not be a thing to be despised.”
“Undoubtedly so, Dick, provided it would not require an expenditure of water to put it in motion, for, in that case, the situation would be precisely the same; moreover, up to this time, nothing practical of the sort has been invented. Balloons are still at that point where ships were before the invention of steam. It took six thousand years to invent propellers and screws; so we have time enough yet.”
“Confounded heat!” said Joe, wiping away the perspiration that was streaming from his forehead.
“If we had water, this heat would be of service to us, for it dilates the hydrogen in the balloon, and diminishes the amount required in the spiral, although it is true that, if we were not short of the useful liquid, we should not have to economize it. Ah! that rascally savage who cost us the tank!”*
* The watertank had been thrown overboard when the native clung to the car.
“You don’t regret, though, what you did, doctor?”
“No, Dick, since it was in our power to save that unfortunate missionary from a horrible death. But, the hundred pounds of water that we threw overboard would be very useful to us now; it would be thirteen or fourteen days more of progress secured, or quite enough to carry us over this desert.”
“We’ve made at least half the journey, haven’t we?” asked Joe.
“In distance, yes; but in duration, no, should the wind leave us; and it, even now, has a tendency to die away altogether.”
“Come, sir,” said Joe, again, “we must not complain; we’ve got along pretty well, thus far, and whatever happens to me, I can’t get desperate. We’ll find water; mind, I tell you so.”
The soil, however, ran lower from mile to mile; the undulations of the gold-bearing mountains they had left died away into the plain, like the last throes of exhausted Nature. Scanty grass took the place of the fine trees of the east; only a few belts of half-scorched herbage still contended against the invasion of the sand, and the huge rocks, that had rolled down from the distant summits, crushed in their fall, had scattered in sharp-edged pebbles which soon again became coarse sand, and finally impalpable dust.
“Here, at last, is Africa, such as you pictured it to yourself, Joe! Was I not right in saying, ‘Wait a little?’ eh?”
“Well, master, it’s all natural, at least—heat and dust. It would be foolish to look for any thing else in such a country. Do you see,” he added, laughing, “I had no confidence, for my part, in your forests and your prairies; they were out of reason. What was the use of coming so far to find scenery just like England? Here’s the first time that I believe in Africa, and I’m not sorry to get a taste of it.”
Toward evening, the doctor calculated that the balloon had not made twenty miles during that whole burning day, and a heated gloom closed in upon it, as soon as the sun had disappeared behind the horizon, which was traced against the sky with all the precision of a straight line.
The next day was Thursday, the 1st of May, but the days followed each other with desperate monotony. Each morning was like the one that had preceded it; noon poured down the same exhaustless rays, and night condensed in its shadow the scattered heat which the ensuing day would again bequeath to the succeeding night. The wind, now scarcely observable, was rather a gasp than a breath, and the morning could almost be foreseen when even that gasp would cease.
The doctor reacted against the gloominess of the situation and retained all the coolness and self-possession of a disciplined heart. With his glass he scrutinized every quarter of the horizon; he saw the last rising ground gradually melting to the dead level, and the last vegetation disappearing, while, before him, stretched the immensity of the desert.
The responsibility resting upon him pressed sorely, but he did not allow his disquiet to appear. Those two men, Dick and Joe, friends of his, both of them, he had induced to come with him almost by the force alone of friendship and of duty. Had he done well in that? Was it not like attempting to tread forbidden paths? Was he not, in this trip, trying to pass the borders of the impossible? Had not the Almighty reserved for later ages the knowledge of this inhospitable continent?
All these thoughts, of the kind that arise in hours of discouragement, succeeded each other and multiplied in his mind, and, by an irresistible association of ideas, the doctor allowed himself to be carried beyond the bounds of logic and of reason. After having established in his own mind what he should NOT have done, the next question was, what he should do, then. Would it be impossible to retrace his steps? Were there not currents higher up that would waft him to less arid regions? Well informed with regard to the countries over which he had passed, he was utterly ignorant of those to come, and thus his conscience speaking aloud to him, he resolved, in his turn, to speak frankly to his two companions. He thereupon laid the whole state of the case plainly before them; he showed them what had been done, and what there was yet to do; at the worst, they could return, or attempt it, at least.—What did they think about it?
“I have no other opinion than that of my excellent master,” said Joe; “what he may have to suffer, I can suffer, and that better than he can, perhaps. Where he goes, there I’ll go!”
“And you, Kennedy?”
“I, doctor, I’m not the man to despair; no one was less ignorant than I of the perils of the enterprise, but I did not want to see them, from the moment that you determined to brave them. Under present circumstances, my opinion is, that we should persevere—go clear to the end. Besides, to return looks to me quite as perilous as the other course. So onward, then! you may count upon us!”
“Thanks, my gallant friends!” replied the doctor, with much real feeling, “I expected such devotion as this; but I needed these encouraging words. Yet, once again, thank you, from the bottom of my heart!”
And, with this, the three friends warmly grasped each other by the hand.
“Now, hear me!” said the doctor. “According to my solar observations, we are not more than three hundred miles from the Gulf of Guinea; the desert, therefore, cannot extend indefinitely, since the coast is inhabited, and the country has been explored for some distance back into the interior. If needs be, we can direct our course to that quarter, and it seems out of the question that we should not come across some oasis, or some well, where we could replenish our stock of water. But, what we want now, is the wind, for without it we are held here suspended in the air at a dead calm.
“Let us wait with resignation,” said the hunter.
But, each of the party, in his turn, vainly scanned the space around him during that long wearisome day. Nothing could be seen to form the basis of a hope. The very last inequalities of the soil disappeared with the setting sun, whose horizontal rays stretched in long lines of fire over the flat immensity. It was the Desert!
Our aeronauts had scarcely gone a distance of fifteen miles, having expended, as on the preceding day, one hundred and thirty-five cubic feet of gas to feed the cylinder, and two pints of water out of the remaining eight had been sacrificed to the demands of intense thirst.
The night passed quietly—too quietly, indeed, but the doctor did not sleep!
CHAPTER TWENTY-FIFTH.