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laces, however, there are laminae containing shells in a more perfect state, all of a white colour, with the exception of one (which I found on digging a cave) of a semicircular shape, of a red colour, and almost as large as an oyster shell. The whole of the substance of Bermuda can be burnt into good lime; but there is an indurated calcareous stone, often containing many perfect shells, on the island on which the naval yard is being built, which is preferred as more adhesive and better in quality. Although there are no indications of volcanic products on this island, yet it exhibits manifest proofs that volcanic force has raised it from the depths of the ocean. In what stage of induration it was at that period it is difficult to conjecture. The hills and vales throughout the whole extent of Bermuda have the stratified calcareous material generally conforming on all sides to the inclination of the surface. There are, however, many situations in which the strata present themselves as manifestly broken by force. In the deep cutting in the road which enters into the enclosure around the Government House, one of these breaks appears at the apex of the hill, dividing its sides, which here incline towards the centre, exposing a wedge-formed supplementary part that fills up the interstice. In the grounds of the Admiralty House curious instances of unconformable strata are laid bare in old quarries. These indicate some other cause for their nonconformity than that before assigned, and I am quite at a loss to imagine how the stratified materials could have been placed one above another at such different angles by the action of water, or in any other way, without appearance of disruption. There are caves upon this island containing large stalactites. There is one on Tucker's Island where these stalactites reach from the top of the cave far below the surface of the salt water it contains. I am not aware of any other instance where similar crystalisations have taken place under the sea water. It seems to lead to the belief that this island was at some time less submerged. There are other caves much larger, and one which goes in so far that the officers who accompanied me did not scramble to its end. This cave is formed by two large masses of calcareous matter having been reared up one against the other. I have seen some very beautiful crystallisations taken from another cave recently found in a quarry at Ireland Island; but the absen
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