The inhabitants state that those which inhabit the upper damp parts drink water, but that the others do not, like the tortoises, travel up for it from the lower sterile country. They are both herbivorous, although the kind of vegetation on which they feed is so very different. It is very interesting thus to find a wellcharacterized genus, having its marine and terrestrial species, belonging to so confined a portion of the world. The aquatic species is by far the most remarkable, because it is the only existing lizard which lives on marine vegetable productions. It is, therefore, worthy of his observation, that this archipelago, instead of possessing a humid climate and rank vegetation, cannot be considered otherwise than extremely arid, and, for an equatorial region, remarkably temperate. We have, therefore, in this quarter of the world, three great conchological seaprovinces, quite distinct, though surprisingly near each other, being separated by long north and south spaces either of land or of open sea. As before remarked, the insects, for a tropical region, are of very small size and dull colours. The botany of this group is fully as interesting as the zoology. Of the flowering plants, 100 are new species, and are probably confined to this archipelago. Lawson, declaring that the tortoises differed from the different islands, and that he could with certainty tell from which island any one was brought. Gray nor myself could find in them any specific differences. In landshells this law of distribution does not appear to hold good. Waterhouse remarks, that of those which were ticketed with their locality, not one was common to any two of the islands. Hooker has furnished me with several other most striking illustrations of the difference of the species on the different islands. But it is the circumstance, that several of the islands possess their own species of the tortoise, mockingthrush, finches, and numerous plants, these species having the same general habits, occupying analogous situations, and obviously filling the same place in the natural economy of this archipelago, that strikes me with wonder. I must repeat, that neither the nature of the soil, nor height of the land, nor the climate, nor the general character of the associated beings, and therefore their action one on another, can differ much in the different islands. As the archipelago is free to a most remarkable degree from gales of wind, neither the birds, insects, nor lighter seeds, would be blown from island to island. I will conclude my description of the natural history of these islands, by giving an account of the extreme tameness of the birds. Formerly the birds appear to have been even tamer than at present.