above. There are three types of marble used. Siphnian marble for the walls, presumably the most cheaply available, and so used where quantity was required, but not regarded as suitable for the finer work. The mouldings, inset where necessary, are Naxian: the sculpture, of course, is Parian. Other interesting details emerge from the analysis of the building. The base is in two separate parts, not bonded together-the base of the Treasury proper, and the base of the access platform to the west of it. On the base the toichobate projected slightly over the front of the base, as on the Treasury of the Athenians and the Propylaia at Athens itself. The effect of this, and the reason for it is clear in Eric Hansen's delightful reconstruction drawings: it emphasises the beginning of the building proper, and separates it from the base, and thus explains the change, both in material and the form and surface treatment of the blocks at this point.The sculpture of the building does not receive a separate study, which has been done elsewhere; it, or the blocks on which it is executed, is properly treated as part of the architectural ensemble, but of course here it is crucial that the sculpture is part of the architecture. The point is made most clearly in the analysis of the west frieze: the surviving blocks (the greater part of the frieze) are not always contiguous, since the correct appreciation of the sculptural decoration on them means they cannot be placed together. D. accepts fully Mary B. Moore, that on the small block (a mere -18 m. in length) placed between the major blocks CP and CQ was sculpted a tree, a balance to the palm tree to the right of Aphrodite's chariot further to the south; and that these two trees are positioned exactly over the caryatids of the west front, thus even more clearly linking the carved decoration with the architectural form.The constructional details, fully elucidated here, put this building firmly in the late Archaic, and thus it accords well with Herodotus' account of the building. It is a masterly little structure. Some details, perhaps, suggest that the skills in marble construction and design are not yet perfect, but it is masterly nevertheless; and so, most decidedly, is this superb presentation of it by