The call had been uttered evidently much nearer, and Jack grasped his spear.

“That’s right, sir,” whispered Ned, “but this is a big place, and it ain’t likely that they’ll come right over us. Let’s lie still and listen. We can’t see them, and they can’t see us.”

At that moment Jack pinched the speaker’s arm, and pointed over him.

“Something to see that way? All right, sir.”

He softly wrenched himself round, and gazed in the indicated direction, to see a black figure standing in bold relief against the orange slope of the mountain. He was nearby a hundred feet higher than where they lay, having mounted upon a ridge which was probably one of the hardened lava-streams which had flowed down, and as they watched him, one by one seven more joined him.

He stood looking round for a few moments, and then uttered the cry they had heard before, and turned to descend, making straight for the bend of the ravine which seemed to lead to the shore.

The call was responded to, and a few minutes after another party came into sight away to the left, making apparently for the same place, and if they kept on, it was evident that they would pass about a hundred yards from Jack and his companion, so that their policy was to lie quite still.

“Be too dark to see us in ten minutes, sir,” whispered Ned.

“Yes; and then we can’t do better than make our way up that ridge till we come upon another valley running down to the shore.”

“That’s the way, sir,” said Ned. “Only wants a little thinking about. A set o’ naked niggers beat you at scheming? Why, it ain’t likely.”