but imperfectly known, and when the massive size of these rude unhewn monoliths abundantly satisfied the human mind in its desire for a visible shrine adequate to the awful mysteries shadowed forth in the heathen mythology. The site of the celebrated Orkney group is perhaps little less remarkable than the venerable monuments to which it owes its name. A long and narrow neck of land separates the Loch of Stennis, a salt-water lake into which the tide rises and falls, from the fresh waters of the Loch of Harray, save at the narrow strait of Brogar, where at times the tidal wave mingles with the tideless waters of Harray; and on this, the great circle or Ring of Brogar, as it is most commonly styled, is reared. Judging from the regularity with which such of the stones as still remain are disposed, the number of columns originally forming the circle appears to have been sixty, on the assumption that they were placed at nearly equal distances apart. Of these sixteen remained _in situ_ in 1792, and eight lay prostrate near their original sites; but now only twenty-three stones remain, ten of which are prostrate, and the broken stumps of a few more serve to indicate the places they once occupied. The whole is inclosed by a deep trench, except at two opposite points, where a level break occurs, affording the means of entrance and exit. The diameter of the great circle, from the inner edge of the trench, measures 366 feet. From the eastern entrance it is possible that an avenue of stones may have once led to the Bridge of Brogar, as the stepping-stones are styled by which the shallow channel between the Lochs of Harray and Stennis is crossed. On the eastern side of the channel one column still remains, bearing the name of the Watch Stone; derived apparently from its position on the brink of the ford commanding the passage between the great circle and the opposite shore, but which may possibly be the only relic of the avenue once connecting the circles on each side of the loch. The smaller group is now frequently designated, from its crescent form, the temple of the moon, and the larger circle that of the sun; but there can be no doubt that these are quite modern and spurious designations. Stennis Circle, as the smaller group is properly termed, is situated on a nearly level piece of ground, and its semicircular outline is further indicated by an inclosing mound of earth, presenting its opening to the south; whereas the larger circle is environed only by a fosse. This group was composed, at no very remote period, of seven or eight stones, but no doubt can be entertained that the figure was originally a circle, inclosing with its vallum, a large cromlech, the ruins of which still remain within the area. It is described by Wallace in 1700 as "a round set about with high smooth stones or flags;"[134] so that it would appear to have been complete at that comparatively recent period. It stood upon a raised circular platform, part of which still remains