In the meanwhile, the bo'sun, taking me to assist him, set-to again upon the boat, being intent to get his batten nicely shaped and fit to the side of the keel, so that it would bed well to the keel, but more particularly to the plank which had sprung outward from its place. And at this he labored the greater part of that afternoon, using the little hatchet to shape the wood, which he did with surprising skill; yet when the evening was come, he had not brought it to his liking. But it must not be thought that he did naught but work at the boat; for he had the men to direct, and once he had to make his way to the top of the hill to fix the place for the tent. And after the tent was up, he set them to carry the dry weed to the new camp, and at this he kept them until near dusk; for he had vowed never again to be without a sufficiency of fuel. But two of the men he sent to collect shell-fish--putting two of them to the task, because he would not have one alone upon the island, not knowing but that there might be danger, even though it were bright day; and a most happy ruling it proved; for, a little past the middle of the afternoon, we heard them shouting at the other end of the valley, and, not knowing but that they were in need of assistance, we ran with all haste to discover the reason of their calling, passing along the right-hand side of the blackened and sodden vale. Upon reaching the further beach, we saw a most incredible sight; for the two men were running towards us through the thick masses of the weed, while, no more than four or five fathoms behind, they were pursued by an enormous crab. Now I had thought the crab we had tried to capture before coming to the island, a prodigy unsurpassed; but this creature was more than treble its size, seeming as though a prodigious table were a-chase of them, and moreover, spite of its monstrous bulk, it made better way over the weed than I should have conceived to be possible--running almost sideways, and with one enormous claw raised near a dozen feet into the air.