Billy was by this time perched on the very summit of the rock, and when he saw the monster ascending towards him he let forth another dreadful cry which roused me from the sort of trance into which I had fallen. Grasping the torch with my left hand and my axe with my right, I leapt over the low rocks that stood between me and Billy, scarcely keeping my footing, and began to hack with all my strength at the shapeless mass, which made such a resistance to that poor clumsy axehead as a thing of leather might make. It did not appear that my strokes were of any avail, for the tentacles crept higher and higher; and looking up when I heard another scream from Billy, I saw that one of them was beginning to twine itself about his leg. And then all of a sudden, while I was bringing my axe down once more on the monster, Billy made a leap upwards, to catch at a stalactite that depended from the roof of the vault, not far from his head. He must have been pretty near beside himself to do what he did, for if he had caught hold of it he could not have held on long; and what did in fact happen was that the stalactite broke off with a sharp snap, and down came Billy and it into the water. I thought this might be the best thing that could happen, for he could swim like a fish, and the monster would take some time in letting itself down from the rock; but when Billy rose to the surface, and I called to him, I saw by his feeble movements that he must have been hurt, so I sprang to a low rock near which he had come up, and held out my axe for him to grasp, which he did, and so I got him on to the rock, though not without some trouble, it being scarce broad enough for both of us. And immediately afterwards I observed that the monster had left the big rock and disappeared into the water, on which I cried to Billy to be of good cheer, because I was sure my continual chopping had wrought some damage on the monster and maybe killed it. But the words were scarce out of my mouth when we saw, by the ruddy light of my torch, a tentacle appear above the water not three feet away. This put me in a shudder lest we were in a perfect den of the creatures, and I called to Billy to jump across the rocks, if he could, back to the entrance to the tunnel, so that he at any rate, being now the weaker, might be out of harm's way. His terror lending him strength, he gathered himself together and leapt from rock to rock as he had done before, while I seized upon the axe which I had dropped beside me when I landed on the rock, and chopped away in a kind of frenzy at the tentacles which were brandishing themselves, you may say, at several places around me. As soon as I saw that Billy was safe I gave up the contest and sprang after him, and I was never so thankful in my life as I was when I stood beside him at the end of the tunnel.