“Don’t talk like that, Jack,” I said in agony, as I thought of him who had helped me to escape, and of the prisoner he had mentioned, and whom the black professed to have seen. “Let’s get our task done and escape as soon as we can. A savage life is not for such as we.”

That day we had an alarm.

Our men had been out and returned soon after sunrise, that being our custom for safety’s sake. Then, too, we were very careful about having a fire, though we had no difficulty with it, for it burned freely, and the smoke rose up through the great crack in the rock above our heads, and disappeared quietly amongst the trees. But we had one or two scares: hearing voices of the blacks calling to each other, but they were slight compared to the alarm to which I alluded above.

The men, I say, were back, having been more successful than usual—bringing us both fish and a small wild pig. We had made a good meal, and the doctor and I were lying on the armfuls of leafy boughs that formed our couch, talking for the twentieth time about our plans for the night, when all at once, just as I was saying that with a little brave effort we could pass right through the sleepy village and bring away the prisoner, I laid my hand sharply on the doctor’s arm.

He raised his head at the same moment, for we had both heard the unmistakable noise given by a piece of dead twig when pressed upon by a heavy foot.

We listened with beating hearts, trying to localise the very spot whence the sound came; and when we were beginning to breathe more freely it came again, but faint and distant.

“Whoever it was has not found out that we are here,” I whispered.

The doctor nodded; and just then Jack Penny, who had been resting his back, sat up and yawned loudly, ending by giving Jimmy, who was fast asleep, a sounding slap on the back.

I felt the cold perspiration ooze out of me as I glanced at the doctor. Then turning over on to my hands and knees I crept to where Jimmy was threatening Jack with his waddy in much anger, and held up my hand.