Thirty-one feet from the outside piles towards the south-east, there was a layer of rough, large stones, marked B on Plate III., about 15 feet long from north to south, and 11 feet broad. Seventeen feet farther north, and 18 feet from the east side, there was a spade-shaped platform, with the convex end to the north, about 26 feet in length and breadth. The Plan shows its appearance in February 1879, with several pieces of wood flooring towards the east side, and a layer of large rough stones at A. In October 1880 some of the logs had rotted away, and others were pierced through by the shoots of the marsh plants, which are gradually covering the partially drained area. Thirty feet to the west of A, there was a circular layer of rough stones about 10 feet in diameter, surrounded by several rings of piles. On removing some loose dry peat on the east part of A, we found a floor of oak logs, laid north and south, 10 feet 6 inches in length and 8 feet in breadth. The surface was somewhat flat; but this may have been caused by exposure to the weather. The interstices were closely packed with white clay and the sphagnum moss, so common in our bogs, with a few stakes driven between them. At the west or inner side of this floor there was a log 13 feet 6 inches long, 1 foot broad, and 8 inches deep. Beyond it was a layer of large rough stones from 9 to 12 inches deep, which had been disturbed by some idle visitors, so that its exact extent cannot be given. Under the stones was a thin layer of peat, then a log floor resting on clay and stones, and under that a second floor, the parts of which were sloping. Under the large oak log already mentioned lay a few birch logs sloping towards the north-west, and covering at the left side one angle of a frame 6 feet 6 inches square, made of four oak beams, that on the south-east side having two square-cut mortise holes, measuring 6 by 5 inches, and 4 feet apart, and that on the opposite side having one mortise hole with a piece of the upright still in it. In the angle between this frame and the south end of the large log there was a circular hearth of rough stones bedded in clay, and a similar hearth beyond the north-west angle, where there seems to have been another square frame without mortises. There were several inches in depth of ashes, with charred wood, and fragments of bone too small and wasted to indicate what animal they belonged to. West of the second hearth the following section was noted in descending series:-- (_a_.) Rough stones, 9 inches. (_b_.) Peat, 12 inches. (_c_.) Ashes, 5 inches. (_d_.) White clay, 3 or 4 inches. (_e_.) Ashes.