"Previous to the disturbance of the floor for the admission of the body, it would appear, from the presence of flags of stalagmite in the rubble, that it was covered with a continuous crust, the edges indeed of which still adhere to the sides. It further appears from the repetition of similar crusts, as indicated by the broken edges at the sides, that there were periods of repose which allowed new floors to form, marking clearly their repeated destruction and renovation at intervals of time. "With the exception of single teeth and an occasional rib or vertebra in charcoal, which may have possibly belonged to the same subject, there were no other traces of human remains."[222] The peculiarity in the teeth of certain classes of ancient crania above referred to is of very general application, and has been observed as common even among British sailors. The cause is obvious, resulting from the similarity of food in both cases. The old Briton of the Anglo-Roman period, and the Saxon both of England and the Scottish Lothians, had lived to a great extent on barley bread, oaten cakes, parched peas, or the like fare, producing the same results on his teeth as the hard sea-biscuit does on those of the British sailor. Such, however, is not generally the case, and in no instance, indeed, to the same extent in the skulls found in the earlier British tumuli. In the Scottish examples described above the teeth are mostly very perfect, and their crowns not at all worn down. In that marked No. 5, one of those found at Cockenzie, the under jaw has been preserved, and in it the wisdom teeth are only partially developed, indicating the age of the individual. The perfectly formed teeth are not much more worn than those which had never pierced the gums.