Whatever may be determined on the point, one thing, I think, must and will be conceded, which is, that Arthur's Table at Penrith, Arbor Low, and Avebury, are monuments of the same age, and were dedicated to the same purposes. The first is a simple earthen monument, of a certain design and with certain dimensions; the second has the same design and dimensions, with the addition of a circle of stones and dolmen in the centre; the third has all the features that the other two possess, with the addition of increased dimensions, and the internal circles being doubled. But the internal ditch, the rampart, and the character of the circle and other features, are so like each other, and so unlike what are found elsewhere, that they must stand or fall together. If any one of these belonged to the age of Arthur, all three certainly did. If, on the other hand, any one of the three can be proved to belong to another age, the other two will hardly be able to maintain their position. The circles at Cumrew, Salkeld, and Mayborough, present so many points of similarity, that they, too, must probably be classed with these three, though there is not the same evidence to justify their being classed together. The stone avenue at Shap is also most probably the counterpart of that at Kennet; but the destruction of the circle at Brackenbyr, and the limited knowledge we have of it, prevent anything very definite being predicated regarding it. If we may consider Gib Hill as the analogue of Silbury Hill, its place and position may throw some light on the mystery attaching to the latter. The relative distances of these satellites to their primaries is nearly proportional to the diameter of the circles, and they both present the peculiarity that they have no interment in their base. The Archæological Institute in 1849 did exactly what the Batemans had done before them. They tunnelled and explored the base of Gib Hill, and gave it up in despair, when an accident revealed to them the grave over their heads, within 18 inches of the surface. The antiquaries were not so fortunate at Silbury; but judging from the analogy of Gib Hill, and still more from that of Minning Low, the graves may be expected to be found arranged around the plateau on the summit, probably six or seven in number, and as probably within a few feet of the surface. There was none in the centre of the platform at Minning Low, though there was in the smaller tumulus of Gib Hill; and this may account for the Duke of Northumberland's ill-success when he dug into the hill in 1776. Poor Stukeley was very much laughed at for prizing a very modern-looking iron bit, belonging to a bridle that was found on the top of the hill[176] (woodcut No. 18); yet it may turn out to be the only real fact he brought away from the place. Nothing but an iron sword was found in the kistvaen, on the top of Minning Low, but it was nearly perfect;[177] why should not the bridle be found, for we know