It cost us a month or six weeks' time to perform this voyage, in which time we went on shore several times for water and provisions, and found the natives always very free and courteous; but we were surprised one morning early, being at the extremity of the northernmost part of the island, when one of our men cried out, "A sail! a sail!" We presently saw a vessel a great way out at sea; but after we had looked at it with our perspective glasses, and endeavoured all we could to make out what it was, we could not tell what to think of it; for it was neither ship, ketch, galley, galliot, or like anything that we had ever seen before; all that we could make of it was, that it went from us, standing out to sea. In a word, we soon lost sight of it, for we were in no condition to chase anything, and we never saw it again; but, by all that we could perceive of it, from what we saw of such things afterwards, it was some Arabian vessel, which had been trading to the coast of Mozambique, or Zanzibar, the same place where we afterwards went, as you shall hear. I kept no journal of this voyage, nor indeed did I all this while understand anything of navigation, more than the common business of a foremast-man; so I can say nothing to the latitudes or distances of any places we were at, how long we were going, or how far we sailed in a day; but this I remember, that being now come round the island, we sailed up the eastern shore due south, as we had done down the western shore due north before. Nor do I remember that the natives differed much from one another, either in stature or complexion, or in their manners, their habits, their weapons, or indeed in anything; and yet we could not perceive that they had any intelligence one with another; but they were extremely kind and civil to us on this side, as well as on the other. We continued our voyage south for many weeks, though with several intervals of going on shore to get provisions and water. At length, coming round a point of land which lay about a league further than ordinary into the sea, we were agreeably surprised with a sight which, no doubt, had been as disagreeable to those concerned, as it was pleasant to us. This was the wreck of an European ship, which had been cast away upon the rocks, which in that place run a great way into the sea.