One thing was evident: it would be useless for me to make the attempt before morning. There was not half-an-hour of sun left, and at night the trail could not be followed. I had no alternative but to remain where I was until another day should break.

But how remain? I was hungry; still worse, I was choking with thirst. Not a drop of water was near; I had seen none for twenty miles. The long hot ride had made me thirsty to an unusual degree, and my poor horse was in a similar condition. The knowledge that no water was near added, as it always does, to the agony, and rendered the physical want more difficult to be endured.

I scanned the bottom of the barranca, and tracked it with my eye as far as I could see: it was waterless as the lain itself. The rocks rested upon dry sand and gravel; not a drop of the wished-for element appeared within its bed, although it was evident that at some time a torrent must have swept along its channel.

After some reflection, it occurred to me that by following the barranca downward, I might find water; at least, this was the most likely direction in which to search for it. I rode forward, therefore, directing my horse along the edge of the chasm.

The fissure deepened as I advanced, until, at the distance of a mile from where I first struck it, the gulf yawned full fifty feet into the plain, the sides still preserving their vertical steepness!

The sun had now gone down; the twilight promised to be a short one. I dared not traverse that plain in the darkness; I might ride over the precipitous edge of the barranca. Besides, it was not the only one: I saw there were others—smaller ones—the beds of tributary streams in seasons of rain. These branched off diagonally or at right angles, and were more or less deep and steep.

Night was fast closing over the prairie; I dared not ride farther amid these perilous abysms. I must soon come to a halt, without finding water. I should have to spend the long hours without relief. The prospect of such a night was fearful.

I was still riding slowly onward, mechanically conducting my horse, when a bright object fell under my eyes, causing me to start in my saddle with an exclamation of joy. It was the gleam of water. I saw it in a westerly direction, the direction in which I was going.

It proved to be a small lake, or—in the phraseology of the country—a pond. It was not in the bottom of the ravine, where I had hitherto been looking for water, but up on the high prairie. There was no timber around it, no sedge; its shores were without vegetation of any kind, and its surface appeared to correspond with the level of the plain itself.

I rode towards it with joyful anticipation, yet not without some anxiety. Was it a mirage? It might be—often had I been deceived by such appearances. But no: it had not the filmy, gauze-like halo that hangs over the mirage. Its outlines were sharply defined by the prairie turf, and the last lingering rays of the sun glistened upon its surface. It was water!