It is possible to reconstruct what has perished from their description and from the evidence of the ruins in more than one way. Either the central portion towered high above the upper storey which, in any case, we must suppose to have been above the outer series of vaulted chambers, or else the vaulted roof of the central chambers directly bore the layer of earth in which the trees were planted, thus forming an inner garden court on the ground level. In the latter case the surrounding corridor wall can be regarded as having served as the foundation for the columns or pillars of which the base found in the Eastern Court (p. 89) may have formed part. A court planted with trees, connected with pillared halls, would show such a striking analogy with the festival house of Assur (_M.D.O.-G._ No. 33, Fig. 8) that one might be tempted to recognise in the vaulted building _E-sigiši_ the “house of offerings for the exalted festival of Marduk, lord of the gods” (_Steinplatten_ inscription, 3, l. 7), were it not that some difficulties seem for the present to forbid it. The practical result of the whole arrangement was, no doubt, to neutralise to the greatest possible extent the oppressive heat of summer. The entire building was roofed over, and the central part corresponds with the courts of other houses except that it is ceiled. The roof is protected by an unusually deep layer of earth. The air that entered the chambers, the διαίτας βασιλικάς of Diodorus, through the leaves of the trees must have been delightfully cooled by the continuous watering of the vegetation. Possibly the palace officials did a great part of their business in these cool chambers during the heat of summer. At the present time, in the Turkish government offices, the window is hung with a frame composed of two pieces of wide-meshed trellis work of palm leaves between which a layer of _agul_ is fixed. Agul is a prickly desert plant with a great power of retaining water. This is continually sprinkled, and as the wind blows through it, cools the room to a very remarkable degree, at the same time darkening it, but this is not objected to by the clerks, as especially in summer the people are contented with very little light. In any case the building was intended to be much in use, for two doors in the south wall lead to it, and the passage from the central court is unusually wide. The crypt below shared fully in the advantage of security from heat. The remains of the vaulted portions show that at all times it must have been very dark, and can therefore hardly have been used except as a storehouse for all manner of goods, a use for which the numerous uniform chambers are well adapted. The large number of tablets found in the stairway chamber on the south side also point to this use, as the inscriptions on them relate to grain.