We did not take another voyage for some days, for my dreams were haunted by visions of the monster, and I felt a shuddering reluctance even to look at the canoe, upon which I seemed to see tentacles writhing. And when we did again embark, it was only to paddle out to the fishing-ground I have mentioned, though by and by, when the recollection of the monster had become somewhat dimmed, we cruised about the coast sometimes for the mere pleasure and exercise of it, and to make ourselves more expert in the management of our vessel. After a time the notion came to us of rigging up a mast and sail, and trying what we could do in real navigation. We had some difficulty in stepping the mast, which was a straight pine sapling; but the way we at length hit upon was as follows: we fastened two straight logs athwart the canoe, setting them parallel, and just so far apart as gave room for the mast. Having set up the mast between them, we lashed two more logs, but shorter, crosswise upon the first two, close up against the mast, which was then, as you perceive, gripped pretty firmly by the four logs. The sail gave us little trouble, for we had become expert by this time in weaving, and we wove a sort of huge mat with long grasses, which we found to serve excellently well. Spars and cordage were also easily made, though they took a prodigious time, and we one day hoisted our sail to see how our contrivances would act. [Illustration: Our Canoe] [Sidenote: Rigging] We were much disappointed when we found that as soon as the sail caught the wind our vessel heeled over, so that we had to lower the sail immediately, or we should have been capsized. After some thought we hit upon a remedy, which was to make some alterations in the weight of the outrigger, and also in the length of the outrigger beam; and when we had spent a deal of time in making experiments, and running some risks of losing the vessel, we managed so that she ran perfectly steady with an ordinary breeze. And then we discovered that, our stability being assured, we could sail marvellously close to the wind and at a very fair speed, much faster, indeed, than we could paddle, and it then became our delight to make little trips round the coast and some distance out to sea, always very carefully looking out first from our watch-tower to be sure that no savages were in sight. [Sidenote: The Red Rock]