Notwithstanding these defects, there is a grandeur of conception about the Persepolitan halls which entitles them to our admiration. Their greatest point of interest to the architectural student consists probably in their being examples of a transition from a wooden to a stone style of art, and in their enabling us to complete and understand that art which had been elaborated in the valley of the Euphrates during previous centuries; but which, owing to the perishable nature of the materials employed, has almost wholly passed away, without leaving sufficient traces to enable all its characteristics to be understood or restored. SUSA. The explorations of Mr. Loftus at Susa in 1850 laid bare the foundations of a palace almost identical both in plan and dimensions with the Chehil Minar at Persepolis. It was, however, much more completely ruined, the place having long been used as a quarry by the inhabitants of the neighbouring plains, so that now only the bases of the pillars remain in situ, with fragments of the shafts and capitals strewed everywhere about, but no walls or doorways, or other architectural members to enable us to supply what is wanting at Persepolis. [Illustration: 98. Restored Elevation of Capital at Susa. (From Loftus.)] The bases seem to be of the same form and style as those at Persepolis, but rather more richly carved. The capitals are also more elaborate, but more essentially wooden in their form, and betray their origin not only in the exuberance of their carving but also in the disproportion of the capital to the shaft. In wood so large a capital does not look disproportioned to so slender a shaft; in stone the effect is most disagreeable, and was to a certain extent remedied at Persepolis so soon as the result was perceived. Whether the Persians would ever have been able to shake off entirely the wooden original is not quite clear, but the Greeks, being bound by no such association, cut the knot at once, and saved them the trouble. [Illustration: 99. Frieze of Archers.]