I saw that there might be something in Billy's notion, so we first of all tried the experiment of making one of the arrows taper towards the tail; and when we found that it certainly flew from the bow much better than the others, I thought of improving still further by fitting stone heads to the shafts. We split up some pieces of flint, and using a flat corner of the lava tract as a kind of anvil, Billy chipped away at some of the smaller pieces with a heavy lump of the rock containing iron until we had a little heap of flakes shaped something like a leaf. Some of these we lashed to shallow grooves in our shafts by means of pieces of the string I had made; others we drove into clefts in the top of the shafts; and when we came to try these new-tipped arrows on the bow, we found that they flew very much better than any that we had made before. By the time we had furnished ourselves with the bows and a dozen arrows our week's holiday was past, and we ought by rights to have gone back to our work on the house. But arrows were not made merely to be looked at, nor to be shot off only for fun, as Billy said, and he was bent on employing our new weapons in the useful work of providing food. We had had nothing but bread-fruit, cocoanuts, and eggs, and pork twice, ever since we had been on the island, which I reckoned to be now a matter of three or four months or so, and I own I agreed with Billy that we should be none the worse of a more frequent change of diet. Of late we had seen very little of the wild pigs, being so much busied with our building work and pottery, and other things; but the dogs were frequent spectators of our proceedings, though not so constantly as at first, finding no profit in them, I suppose. However, we now set off with our bows and arrows, fiercely bent on slaughter. We tramped for a good long time across the island before we discovered a herd of pigs in a little open space beyond a wood. They were grunting, as pigs do, and poking their snouts into the ground as if in search of food, though I doubted whether they would find anything fit to eat, even for them, which are not particular, as everybody knows. We crept up very stealthily to the edge of the open space, so that they did not perceive us, and then, selecting the two nearest animals, we let fly our shafts both at the same moment. The arrows flew very swiftly from the bows, but clean over the pigs, so that we did not hit one of them, and the twang of the bow-strings being very audible, the pigs instantly took fright, and scampered away, all but one old boar, as he seemed, who stood with his snout lifted, grunting very loud, as if angry with being disturbed.