"Yes," observed Natty, "I remember hearing of those stories; but David said they were merely pieces of the bone of some animal, made into an oval shape, and burned round the edges. If they have any power in drawing out poison, it is in consequence of being porous; and he said he believed any substance made up of capillary tubes, such as common sponge, would be equally efficacious. After all, I believe that my remedy is the only one on which dependence can be placed, except, perhaps, the immediate application of _eau de luce_, and of course, when a person is bitten by a snake, in rare instances only is he able to obtain any." As may be supposed, we hunted about the hut thoroughly before lying down, in case any other snakes might have crawled in; and I stopped up every crevice by which I thought it possible the one I had killed could have entered. Natty was so much better by the time our last supply of water was nearly finished, that I no longer refused to let him accompany me to the fountain, intending to proceed from thence towards our ultimate destination. Clouds had gathered in the sky, and the air was cooler than it had been for some time, as we set out. I insisted on his frequently stopping, and wished him to allow me to carry him at intervals; but to this he would not consent. We each of us had a long stick in our hands to support our steps, and I assisted him on with my arm. Our progress was, however, but slow; for in spite of his efforts, I saw that he was still very weak. Thus it was not until the sun was already sinking before us in the west that we got within sight of the fountain. We had exhausted our water, and I was anxious to get a further supply before the night closed in. Again I begged Natty to let me take him on my back, for I thought it would rest him, and enable us to get on faster. At last he consented, and though he was but a light weight for his age, reduced as he was by sickness, yet I found, after proceeding a couple of hundred yards or so, that I was myself beginning to get fatigued. Perhaps he discovered this, by finding the slower pace at which I was going, and he insisted on again getting down, declaring that he was much rested by the ride. Giving him my arm, therefore, we again pushed on. The dark rocks which surrounded the fountain now rose up clearly before us. I looked round carefully, but could see no trace of the lions. We reached the spot, and soon I had the satisfaction of seeing Natty swallowing an ample draught of water. I then took some myself, and filled our bottle. I felt a longing to take another swim, but afraid that the lions might come upon us while I was in the water, I refrained. I was fortunate in killing five more birds, out of a covey which rose just as we sat down by the water's brink.