Before proceeding to draw my final conclusions from the above observations, I must remark that it is untrue that the water flowing down the street of the Tyropoeon valley, at the time of rain, supplies the cistern (on the lowest level) at the south-west corner of the platform of the mosque. This (24 feet deep and wholly excavated in the rock) receives the water that has been used by the Mohammedans for their purifications, which is carried off from it into the great sewer in the Tyropoeon by a conduit on the west side. I shall discuss the springs of the _Hammam es-Shefa_ more fully in another place; at present I will only observe that the depth of the source is about 96 feet below the surface, consequently it is impossible that its waters could flow into the cistern of the _Sakharah_, and to the Fountain of the Virgin. The cistern in front of the east gate of the bazaar (excavated in the rock and 26 feet deep) has a conduit on the south, supplying the fountain for ablutions, near the Chapel of Moses. This is filled by the droppings from the terrace-roofs of the buildings on the east and west of it, as well as from the ground around it. On the platform of the mosque, near its south-east corner, is a cistern in the rock, whose depth I was unable to measure, as it is nearly filled up: from it two small conduits (of no antiquity) run in opposite directions, their openings being above the vaulting; that on the north-west catches the water dropping from the mosque, that on the east is intended to drain a part of the platform, but it is now useless; both are visible on the surface of the pavement. Lastly, the conduit parallel to the west and north walls of _el-Aksa_, was made to receive the water from that mosque, and carry it into the _Birket es-Sultan_. The remaining cisterns, plentifully scattered over the _Haram_, are for the most part useless. We see then that, while the Mohammedans pay no regard to the works of antiquity, they are equally careless about those which are of the highest importance to themselves. Having thus narrated the investigations I have made and the information I have collected, I will now state my conclusions on the connexions and purposes of these underground works.