It was so dark in the chasm that we could see only a short distance ahead. And the roar of the river and of the thunder was something terrible.

No landing could be made and we dashed blindly down. It was marvelously exciting, and we were keyed to the highest pitch of efficiency.

The white line of foam would be the first warning we would have of a rock ahead, then we would bend all our strength and sometimes our boat would tilt on the current that ran off from the rock. It was close.

If we had struck head on we would have been in a most critical situation. The lightning was of no real help, only serving to blind us. Tom closed his eyes for the second of the flash so that he would not be blinded.

Fortunately the storm was brief and we saw a beautiful sight when the clouds cleared. On both sides of the canyon, from the cliffs twelve hundred feet in height, sprang numerous little water falls.

Some amber, others tinged with red or glittering with the silver of the sun. The largest in volume were four or five feet across, but before they reached the river below, they feathered out in spray. These cascades were beautiful indeed.

Several days after the thunder storm we had an overwhelming experience. It came on us suddenly and without sufficient warning to enable us to reach the shore.

It was a clear day and there had been no storm in our vicinity. We were going swiftly down the current, in the midst of a canyon, with towering walls over three thousand feet in height.

Suddenly my ear caught the sound of a louder roar than the usual tone of the river. I glanced back and in my dismay I could give no word of warning.

But the other boys had heard the ominous, thunderous roar filling the narrow depth of the canyon. Jim sprang to the steering oar, and without a word Juarez leapt to Jim's vacant place.