out-building towards the valley. To the N.W. of the palace there is another small detached building called by the Arabs the Bath (Fig. 80). Near it the surface of the ground is broken by low mounds which may indicate the presence of ruins. The Arabs assured me that by digging here brackish water could be obtained; there is also a well of brackish water in the western part of the palace court, but it is not used for drinking purposes. The water supply of Ukheiḍir is derived from the Wâdî Lebai’ah. It is obtained by digging holes in the sandy bed of the valley. [Illustration: FIG. 80.--UKHEIḌIR, THE BATH.] The fortification wall is arcaded without and within up to two-thirds of its height. These blind arcades support the walls of the _chemin de ronde_. The outer arcade serves the purpose of a machicoulis, a narrow space between its arches and the outer face of the main wall enabling the defenders in the _chemin de ronde_ to protect with missiles the foot of the wall below them (Fig. 83). The _chemin de ronde_ could be reached from the uppermost floor of the three-storeyed block of the palace, as well as by means of four staircases, one in each of the angles of the court (Fig. 84). Two of these staircases have now fallen completely. The _chemin de ronde_ had been covered by a vault (Fig. 86). Arched doorways led into outlook chambers hollowed in the thickness of the bastions. Arched windows open on to the court. In the centre of each side of the fortification wall there is a gate (Fig. 85), that which stands on the northern side being the most important, since it communicates directly with the palace (Fig. 87). It opens into a passage with a guard-room on either side. The passage leads into a small rectangular chamber, A in the plan, covered with a fluted dome (Fig. 88). From this chamber an arched doorway communicates with a vaulted hall, B, which runs up to a height of two storeys and is the largest room in the palace (Fig. 90). The vault, borne on projecting engaged piers, spans seven metres. Beyond the hall vaulted corridors, C C C C, C´ C´ C´ C´, surround an open [Illustration: FIG. 94.--UKHEIḌIR, CUSPED DOOR OF COURT S.] [Illustration: FIG. 95.--UKHEIḌIR, VAULTED END OF P, SHOWING TUBE.] [Illustration: FIG. 96.--UKHEIḌIR, CORRIDOR Q.] [Illustration: FIG. 97.--UKHEIḌIR, VAULTED CLOISTER O´.] [Illustration: FIG. 98.--UKHEIḌIR, GROIN IN CORRIDOR C.] [Illustration: FIG. 99.--UKHEIḌIR, SQUINCH ARCH ON SECOND STOREY.]