At first it occurred to me that this was a floating island, like the one I before described, and that it was gradually rising more to the surface; but this idea did not satisfy me. Throwing the lead and line in the boat, I pushed off, and sounded in several directions, and had the mortification to find that in the passage which the ship had entered, there was now not sufficient water for her to go out again, even if we were to have discharged the whole cargo. I soon discovered the cause of this apparent mystery; for as I went further out on the reef, I found that whole trees and solid masses of coral had sprung up to the water's edge, in parts which I knew were several fathoms deep when we entered. I had often heard that the islands in these seas were formed by corals, but I had no idea of the rapidity with which they were extended. Your highness must know that all the zoophite, or animal plants, are composed of small insects, who work in millions under the water, until they rise to the top. Such was the case in the present instance, and thus by the labours of the minutest of the creation, in the short space of three weeks my ship was shut up so as to render escape hopeless. I returned on board, and explained to the men the real cause of the apparently supernatural effects of what we had witnessed. Satisfied that my assertions were correct, they seemed to care little at being obliged to remain on an island which afforded them the means of such comfortable subsistence. As nothing could be done for the ship, we went on shore again, and repitching the tents, waited quietly until we might be taken off by some vessel who should chance to pass that way.