Ah! that rascally savage who cost us the tank!"*

* The water-tank 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.