Upon inquiring where the rubbish removed from the island was located, we were informed that it had been wheeled to the west side of the crannog, and heaped up just close to where we had stepped across to the island. Here it lay for some days; but one morning, to the great astonishment of the workmen, it was found to have entirely disappeared. Upon examination, it turned out that the apparently dry land was a matted crust of mud and roots of aquatic plants, which virtually floated over the water, and suddenly gave way under the accumulated weight, and so buried the whole mass in the water beneath. With this singular and unfortunate catastrophe terminated all further prospects of finding relics. My examination of the crannog was then of a very limited character, and hence, when I came to require more definite information, I found it necessary to revisit the locality. This visit took place so recently as the 31st January 1882, and, although a day by no means suitable for such investigations, I am glad to say that through the courtesy and kindness of the proprietor, Thomas Nelson, Esq., who was personally conversant with the drainage operations, and took much interest in the Lake-Dwelling, the following additional details were procured:-- The island is slightly oval in shape, and, including the partially submerged zone in which the piles were noticed, measures 80 by 70 feet. Near its centre the débris was from 2 to 3 feet thick, and formed a sort of mound containing ashes, charcoal, and some bones. Here the fragments of pottery afterwards described were found. A circular portion of the log pavement, near the centre, was covered with small stones as if to protect it from fire; also some remains of clay flooring were observed in other parts of the island. Regarding the deeper structures little can be said. Mr. Nelson attempted to cut a hole through the timber, and, as far as the water allowed the men to penetrate, he saw nothing but layer upon layer of oak beams lying transversely upon each other. Judging, however, from the solidity and firmness of the island, the great size of some of the logs, and the depth of the loch (still about 12 feet a little to the west of the island), the total thickness of this immense mass of timber cannot, I should say, be less than 12 or 16 feet. Mr. Nelson has directed my attention to the following notice of this island in the _Antiquities of Scotland_, by Grose, vol. i. p. 146. FRIARS' CARSE, IN NITHSDALE.