"Bad business," he answered, briefly, "but at present the task before us is to cut a lot of grass and strew it about on the rocks to dry."

He opened the stubby blade of his knife, glanced at it ruefully, and, selecting a bit of stone, began to whet its edge. But he halted the action abruptly.

A low, weird sound, like a human wail, came from somewhere over behind them.

CHAPTER VI

VARIOUS DISCOVERIES

The sound had no sooner died on the air than a second, far louder, and far more uncanny in its suggestiveness of someone in mortal pain, followed piercingly, up around the rock, and rang in their startled ears.

The third sound more resembled a scream. It was immediately succeeded by a chorus of hideous cries and moans, singularly distressing. They rose to a pitch incredible; they seemed to involve every accent of human grief and torture, and to wrap the rock escarpment completely in an agonizing appeal.

This chorus sank, but a haunting solo of wailing arose as before, to be followed again by the air-splitting scream, and at length once more by the mingling of many dreadful voices.

The island exiles glanced at one another inquiringly, Elaine blanched white with awe.