The huge mass of pumice was exceedingly light, and we found no difficulty in doing what the Doctor had suggested. One after the other we scrambled into the hillside crevice, and then Graham, he being the strongest, managed to pull the stone over us, and we were immediately in darkness. Now, for the first time, we missed poor Rover; in our anxiety and excitement we had not noticed him near us for some time; nor did we ever see the faithful old dog again! Here for half an hour we remained motionless, huddled together, and not daring to speak in voices higher than a whisper. We heard shout after shout from the troopers, and signal after signal from their loud-mouthed trumpets, and we knew our enemies were baffled, for we whom they sought so eagerly had utterly vanished! We heard them clambering over the boulders and dislodging the smaller stones as they wandered hither and thither round the place where we were concealed: and once a big warrior, panting for breath, actually came and leaned against the block of pumice that concealed our hiding-place, and then went his way! At last, all became still near at hand; we could hear our enemies in the distance, but the sound they made grew fainter and fainter, and then ceased altogether. They were gone, and for the present, at least, we were saved! Meantime we had not been idle. As soon as we dared move without the possibility of the soldiers hearing us, we began to explore our refuge. The rift extended downwards and inwards towards the centre of the mountain, but the jagged rocks and the darkness made our progress most perilous, and at last we had to give up in despair. We struck a few wax-vestas Graham chanced to have in one of his pockets, but their feeble flame only served to render the surrounding darkness more hideous and profound. There was nothing for it but to return to the entrance, and there we waited and waited all the afternoon until sunset, fearful to go out until the night should cloak our movements from the view of any enemies still lurking near. As the short twilight was coming to an end, the Doctor said in a low tone: "One of us must go back to the camp by the lake, for our knapsacks. We must have food, if by any possible good fortune these troops have left our things undisturbed. The rest must stay here; for I think we could not find safer quarters for a day or so, until our enemies have grown weary of the search, and depart to try elsewhere. I am ready----" "No, Doctor," broke in Graham. "I will not hear of what you were about to propose. I volunteer the task of going back myself. You are far from strong yet, and the fatigue is too much for you." "But I am willing to go," said Temple. "Let me go, Doctor! I can be back in no time, I am more used to the hills than any o' ye," pleaded Sandy.