He stopped short and lay down upon the earth for a few minutes, during which the doctor remained undecided. At last he bent down and whispered a few words to his patient, who immediately rose.

Orders were then given to the blacks, who were to stay under the command of Jack Penny, and, followed by Jimmy, and leaving the rest of our party in the shade of an enormous tree, we set off once more.

The excitement made the distance seem so short that I was astounded when a low murmur told us that we were close to the village, and, stepping more cautiously, we were soon close up behind a great hut.

“This is the place,” whispered Mr Francis. “He is kept prisoner here, or else at the great hut on the other side. Hist! I’ll creep forward and listen.”

He went down in a stooping position and disappeared, leaving us listening to the continuous talk of evidently a numerous party of the savages; and so like did it all seem to the last time, that no time might have elapsed since we crouched there, breathing heavily with excitement in the shade of the great trees that came close up to the huts.

It was a painful time, for it seemed that all our schemes had been in vain, and that we might as well give up our task, unless we could come with so strong a body of followers that we could make a bold attack.

I whispered once or twice to the doctor, but he laid his hand upon my lips. I turned to Jimmy, but he had crouched down, and was resting himself according to his habit.

And so quite an hour passed away before we were aware by a slight rustle that Mr Francis was back, looming up out of the darkness like some giant, so strangely did the obscurity distort everything near at hand.

“Here!” he said in a low voice; and bending down we all listened to his words, which came feebly, consequent upon his exertions.

“I have been to the far hut and he is not there!” he whispered. “I came back to this and crept in unobserved. They are all talking about an expedition that has gone off to the back of the cave—to destroy us. Carstairs is in there, bound hand and foot.”