cuts into the line of the oversailing vault which is carried over them. Above the south door there is a high narrow arched window, giving additional light to room 141. On either side of the door is placed a shallow arched niche, 1 metre wide and ·5 metre deep. The arch is filled in with a calotte, the lower edge of which is sunk behind the face of the wall. To the west of 140 are two vaulted chambers, 142 and 143, communicating with one another and with a similar chamber, 144, lying further to the south. The vaults of 142, 143, and 144 are set at right angles to the vaults of 140 and 141, so as to form buttresses to them. On the east side the same arrangement is observed in rooms 145, 146, and 147. These six chambers correspond to the more elaborate chambers 31, 32, 33, and 40, 41, 42 of the main palace. No. 141 (which corresponds with No. 30) is provided with four doors, one in the middle of each side. It was covered, not by a barrel vault, but by a stone groined vault, which has now fallen (Plate 41, Fig. 1). The chambers east and west of 141 (Nos. 144 and 147; compare the columned rooms of the main palace) communicate with the yard on either side and also with the vaulted passage or antechamber 148. Into this passage (Plate 41, Fig. 2; compare No. 36 of the main palace) the south door of No. 141 opens. The vault of the passage has fallen. It was no doubt carried on the south side by columns and arches like No. 36. There are no chambers to east and west of the passage, but on either side of the open space to the south of it were two chambers, 149 and 150 to the west, 151 and 152 to the east. They communicated with one another and with the yard to the north, as well as with the corridor south of 141. Their vaults ran east and west. No. 150 has fallen almost completely and No. 152 is much ruined.[31] A doorway in No. 148 gives access to a stair which leads down into an underground room lying beneath Nos. 144, 143, and 142 (section _e-f_, Plate 5, Fig. 1). It is lighted by three splayed windows in the north wall; under the windows there is an arched niche or tâqchah. To the west of No. 142 there is a ruined chamber which contained a stair leading to the roof. Thus the analogy with the block of rooms Nos. 29-42 is complete even to the serdâb and the stair to the roof.