1. _Position of Relics._--As many of the relics, if judged independently of the rest and their surroundings, would be taken as good representatives of the three so-called ages of Stone, Bronze, and Iron, it is but natural for the reader to inquire if superposition has defined them by a corresponding relationship. On this point I offer no dubious opinion. The polished stone celt, Fig. 55, and the knife, Fig. 129, were found almost in juxtaposition about the level of the lowest fireplace. Though the hammer-stones, as a rule, were more abundant in the lower strata, yet the very first thing indicating human art which was found, when we commenced to dig towards the centre of the mound, was a hammer-stone. Almost all the horn implements were found at or below the level of the first-discovered pavement, and three-fourths of the querns were found above it. Below the same level, and around the hearths, tusks of boars were numerous, whereas almost none were found above it; and in the midden pigs' jaws and teeth were found only at its lowest stratum. Various inferences might be drawn from these remarks, which my readers can do for themselves. 2. _Character of the Wood-work._--From the discovery, in the deep section made below the log pavement, of beams with tenons and mortised holes, and large trunks having their branches lopped off as if with a hatchet, it would appear that the first constructors of the crannog were well acquainted with the use of metal tools. It may also be noted that the base of the wood-work of the island was at least 14 feet (after making allowance for the extra height of the mound) below the surface of the field, whereas that of the gangway, within a few feet of the crannog, was only 10 feet. This difference of 4 feet could hardly be accounted for by the inequality of the bed of the lake, as the field appeared here to be quite level, so that we must infer either that it was due to the absolute weight of the island on the portion of the bed of the lake directly below it, or that the gangway was of more recent construction than the island. After all these doubtful elements are eliminated, there remains the important fact that since the island was constructed, 10 feet of silt, at least, had accumulated around it. That broken planks and old mortised beams were mixed up with the trestle-work in various places, would support the idea of a prior structure; while evidence that the whole superstructure had at one or more times been destroyed by fire was quite conclusive. According to this theory, the elaborate mortised beams at the north-east corner might have been a landing-stage, but, in their present position, they are quite inexplicable.