¹ Two small islets, one at either end of the lake, are said to be “crannoges,” or old lake habitations. The evidence npon which this statement was made, is supposed to have been obtained many years ago, when the lake was lowered by large excavations and alterations in the bed of the Drumcliff river, which forms its outlet; but these have since then silted up so much that the lake is now said to maintain nearly its old higher level, and the islets present merely the appearance of heaps of stones.