It was quite time indeed that this was done, for D'Urville's situation was untenable, and in a conversation with his boatswain he ascertained that not more than half a dozen of the sailors could be relied on; all the others were ready to go over to the side of the savages. Tonga Tabou is of madreporic formation, with a thick covering of vegetable soil, favourable to an abundant growth of shrubs and trees. The cocoa-tree, the stem of which is slenderer than elsewhere, and the banana-tree here shoot up with wonderful rapidity and vigour. The aspect of the land is flat and monotonous, so that a journey of one or two miles will give as fair an impression of the country as a complete tour of the island. The number of the population who have the true Polynesian cast of countenance may be put do