“Hurrah!” whispered Perry. “Jump up, old chap. Here, I’ll give you a leg. I shall ride, too, to-day.”

The next minute, both boys were mounted, and following the last mule with the second Indian.

That patch of scrubby forest looked to be close at hand, but it took them nearly an hour to reach it, everything being on so grand a scale among the mountains; but at last they began to thread their way through, with the colonel eagerly examining the different trees, the Indians noting his actions curiously, but always hanging their heads again if they thought that they were observed.

The colonel kept up his examination, but did not seem very well satisfied; and soon after, the bushy trees with their shining green leaves were left behind, and they journeyed on through what had looked at a distance like fields of buttercups, but which proved to be a large tract covered with golden calceolaria, whose rounded turban-like flowers glistened in the sun. This looked the more beautiful from the abundance of grass, at which the mules sniffed carelessly, for they had passed the night eating.

Then before starting upward, there was the rapid stream to cross at a spot where the rocks had fallen in a perfect chaos from the mountain-side, completely filling up the chasm along which the water ran; and here they could hear it rushing, gurgling, and trickling down a hundred channels far below, in and out amongst the rugged masses of rock which dammed it back.

The mules made no difficulty about going over here, merely lowering their muzzles, and sniffing at the cracks and holes as they felt about with their forefeet, and climbed more than walked across to the solid rock and the bare, very faintly marked, stony track, which led up and up to a narrow gap in the mountains, evidently a pass.

Steeper and steeper grew the way, now zigzagging along a stiff slope, now making a bold dash at the mountain-side, over loose stones which went rolling down, setting others in motion till regular avalanches rolled down into the valley hundreds of feet beneath.

“Have you ever been here before, Cil?” said Perry, who now rode close behind his friend.

“No. Never any farther than the place where I overtook you.”

“Isn’t this very dangerous?” continued Perry, as the mules climbed up, sending the loose stones rattling down to their right.