He stood still and listened again. The sound had not abated. He scanned the rocky floor. The water was not running in to any great extent, there being only two or three small trickling streams.

Perhaps there was no danger, after all. At any rate, he had no choice but to wait and see.

The sound of the torrent continued with dull monotony all day, but no harm came to Leonard. He was puzzled beyond measure.

At nightfall it ceased as suddenly as it had begun.

In a moment after Snags entered.

“What on earth has been going on out there?” cried Leonard.

“Why?” asked Snags.

“I should judge that Satan had been taking a shower-bath.”

Snags laughed.

“Oh, that’s one of the tricks of our trade. Visitors have been around to-day.”