It is a day of anxious solicitude. If the night turn out a dark one, the messengers whom fate has chosen for the perilous enterprise are to set out on their errand. They know it is to be a moonless one, but for all, in the diaphanous atmosphere of that upland plateau, it may be too clear to make the passing of the Indian sentinels at all possible.

The afternoon begets hope: a bank of heavy clouds is seen rising along the western sky, which, rolling higher and higher, brings on a downpour of rain. It is of short continuance, however—over before sunset, the clouds again dispersing. Then the darkness comes down, but for a long time only in a glimmering of grey, the stars in grand sheen making it almost as clear if there was moonlight.

The sentinels can be seen in their old places like a row of dark stakes, conspicuous against the green turf on which they are stationed. They are at short distances apart, and every now and then forms are observed moving from one to the other, as if to keep them continuously on the alert.

So thus, nigh up to the hour of midnight, and the miners begin to despair of their messengers being able to pass out—at least, on this night.

But soon, to their satisfaction, something shows itself promising a different result. The surface of the lake has suddenly turned white, as if under a covering of snow. It is fog. Through the heated atmosphere the lately-fallen rain is rising in vapour, and within its misty shroud it envelopes not only the lake, but the plain around its edges. It rolls over the line of savage watchers, on up between the jaws of the chine, till in its damp clammy film it embraces the bodies of those who are waiting above.

“Now’s your time, muchachos!” says Don Estevan, addressing himself to those who are to adventure. “There could not be a better opportunity; if they can’t be passed now, they never can.”

The two men are there ready, and equipped for the undertaking. Young fellows both, with a brave look, and no sign of quailing or desire to back out. Each carries a small wallet of provisions strapped to his person, with a pistol in his belt, but no other arms or accoutrements to encumber them. In subtleness and activity, more than mere physical force, lie their chances of success.

A shaking of hands with such of their old comrades as are near, farewells exchanged when they pass over the parapet of loose stones to commence the descent, with many a “va con Dios!” sent after them in accents of earnest prayerfulness. Then follows an interregnum of profound silence, during which time they at the ravine’s head listen with keenest anxiety.

After a few seconds a slight rustling below tells that one of the two has made a slip, or pushed a stone out of place; but nothing comes of it. Then a horse neighs in the distant camp, and soon after another, neither of them having any significance. No more the screaming of wild-fowl at the lower end of the lake, nor the querulous cry of “chuck-will’s widow,” hawking high over it. None of these sounds have any portent as to the affair in hand, and they, listening, begin to hope that it has succeeded—for surely there has been time for the two men to have got beyond the guarded line?

Hope premature, alas! to be disappointed. Up out of the mist comes the sound of voices, as if in hail, followed by dubious response, and quick succeeding a struggle with shots. Then a cry or two as in agony, a shout of triumph, and all silent as before.