and sometimes the bones and horns of deer, oxen, etc. The shells, particularly the flat ones, are frequently found in rows or layers; they are often double or closed, with their opening part upwards." From Colenso's account it seems probable that this bed was a marine silt with Scrobicularia and cockles in the position of life. He goes on to say that "There has been recently found imbedded in the silt, about two feet from the top, a piece of oak, that had been brought into form by the hand of man; it is about six feet long, one inch and a half broad, and less than half an inch thick; this is the greatest depth at which I have ever seen any converted substance. It appeal's to have floated in the sea, as at one end, which is much decayed, a small barnacle has fixed its habitation."
(d) A stratum of sea-sand, about four inches in thickness; this is easily distinguished from the river-sand, being much finer, and having always more or less shells mixed with it.
(e) Silt two feet, with concretions containing wood and bones.
(f) Another stratum of sea-sand, 20 feet in thickness. In all parts of this sand there are timber trees, chiefly oaks, lying in all directions; also remains of animals such as red deer, "heads of oxen of a different description from any now known in Britain, the horns of which all turn downwards." Human
