length from north to south, four feet eight inches in breadth, and five feet six inches in height. On the west side of the chamber, the small passage, marked _h_, was observed appearing to communicate with another apartment, but it was so blocked up with stones and rubbish, that excavation had to be resumed from the exterior. After working for upwards of an hour, the large stone, marked _m_, was reached, and on removing it an entrance was effected into the central chamber A. This was about three-fourths filled with stones and rubbish, heaped up under the opening marked _i_, on digging into which bones and teeth of the horse, cow, sheep, boar, &c., were discovered mixed with the rubbish, and also some which were supposed to be those of deer, but not a vestige of human bones. The general plan will convey the best idea of the form and arrangement of the chambers. The central apartment, A, is an irregular oblong vault, ten feet long, five feet in greatest width, and 7½ feet in height from the bottom to the lower edge of the stones marked o o. Above this extends the opening i, which had no other covering than the outer layer of turf. Mr. Petrie came to the conclusion, after a thorough examination of the whole, that the rubbish found in this large chamber was the debris of some later building erected above the mound, the materials of which must have been precipitated through the narrow opening, as no part of the subterranean structure was found imperfect with the exception of the passage _g_. From the floor of the chamber to the extreme height of the mound is twelve feet. At the north end of the central chamber the passage _e_ leads to the cell C, measuring five feet seven inches long, four feet wide, and six feet high. From the east side of this a passage extends a considerable way, until it is abruptly terminated by the native rock. The chamber D, which was first entered, communicates with the central apartment by a short passage _h_, directly opposite to which is the long gallery _b_, which formed the entrance to the building from the western side of the mound. A third passage, _a_, proceeds in an oblique direction from the central chamber to a cell B, the proportions of which are six feet in length, three feet seven inches in width, and 6½ feet in height. Nothing found in this or any of the previously explored "_Picts' houses_" gives the slightest countenance to the idea that they were designed as places of sepulture. The most remarkable feature about them, however, and the one least compatible with their use as continuous dwelling-places, is the extremely circumscribed dimensions of the passages. The whole of them measure about fifteen inches in height by twenty-two inches in breadth, so that entrance could only be obtained by crawling on the ground. The arrangement affords a very striking confirmation of the barbarous state of the people, who were yet capable of displaying so