Thus, instead of considering the remains of the old high-level abandoned towns as evidence destructive of the theory that the whole Fayûm was filled with water, I consider their testimony distinctly favours such a theory. Those towns especially, whose ruins are found on the _north_ side of Lake Qurûn, would certainly have been built near the then borders of the lake, as they could have had no possible source of water supply other than the lake itself. It, therefore, is a matter of great interest to determine the levels of any ancient towns that may be found on the north of the lake; and the more ancient the town and the more remote from the present lake, the more suggestive will be the facts that may be ascertained with reference to its levels. Now there are two monuments of antiquity known in such a situation, namely, the ruins of Dimay (Dimeh or Dimé) and an ancient temple (if it is a temple) discovered by Dr. Schweinfurth 7 or 8 kilometres north of Dimay.[6] Dimay itself is 3 kilometres from the nearest point of the present Lake Qurûn, and the surface of its causeway or quay at its upper end, near the old town, is 69 metres above the water surface of the lake (May 2nd, 1892), or at R.L. + 25·44. The south end of the quay is now about 2·85 metres lower, but it was doubtless originally somewhat higher than this, as its present is not apparently its original surface, some of the layers of stone having disappeared. I had a trench dug against this quay or causeway, at about the middle of its length, to determine the depth to which the masonry was carried down. If this had been merely a causeway, it is not easy to understand the necessity for so great a depth of masonry. It was therefore more probably a quay projecting into the water. This quay is 400 metres long, and its direction is due north and south. The level of the plateau sloping up to the end of the causeway on the south of Dimay is from R.L. 13·00 to 17·00; the plateau on the north side of the ruins is at R.L. 21·45. The ruins of Dimay are Roman on the surface, but I do not know if it has been established that below the Roman remains there do not exist more ancient ones. Dr. Schweinfurth thus expresses his opinion about this old town: “Dimé seems to have filled the position of ‘tête-de-pont’ in relation to the Fayûm, as in consequence of its strong position, it afforded a secure outlet and final station for the caravan road opening out towards the Oasis. That the tribes of the Libyan Desert must even in the times of the Romans have been very restless and enterprising, is testified by the numerous similar fortifications, which in the day of the so-called good emperor, were erected on all the principal exits and entrances to the Oasis roads.”