Presently I felt in the water a turgidity where the current was slow, and heard a hoarse, growling rumble quite different from the sounds that we had left behind. Beelo tightened his clutch and breathlessly said:

“It has come!”

“What has, lad?”

“Hush!”

Except for an unusual slapping of the water against the rocks, the commotion had passed. I wondered if the storm had broken in the valley and the torrent was coming; but this did not look like it.

“It has gone, Beelo. What was it?”

“No, it hasn’t. Hold tight. Sit hard, Christopher!”

“Beelo,” I impatiently demanded, “you must tell me what——”

The speech was stopped by a groaning crunch that tossed the stream, splashed the water high on the rocks, and filled the passage with a sound like that of crushing glass. Beelo was again in terror.

“Be quiet, lad. There’s nothing——-”