Sometimes columns represented on the bas-reliefs are actually surmounted by goats (cf. Fig. 14, G) but more often, the horn-shaped volutes (cf. Fig. 14, F) are the only artistic elements borrowed by the Assyrians from the animal world, in the formation of their column capitals. A variety of the same design is seen on the four circular limestone pedestals discovered by Layard at Nineveh[78] (cf. Fig. 14, A) which doubtless at one time supported wooden pillars; the diameter of these bases varied from eleven and a half inches in the narrowest to two feet seven inches in the broadest part. Sometimes the backs of lions (cf. Fig. 14, E), sphinxes or other composite monsters formed the bases of columns, and two such bases in the form of winged sphinxes were found by Layard in the south-west palace at Nimrûd, but they were in such a state of decay that they crumbled soon after excavation, though not before Layard was able to take a sketch of one of them (cf. Fig. 14, B). An interesting example of a capital of a column is the small stone capital preserved in the British Museum (cf. Fig. 13, _b_). It probably formed the upper part of one of the diminutive columns adorning a balustrade, and doubtless when complete was a more or less faithful miniature replica of the full-sized capital discovered by Place (Fig. 13, _a_). Until recently, owing to the fact that the columns portrayed on Assyrian bas-reliefs, and also the scant remains of actual columns which had been recovered, yielded no examples of shafts other than round,[79] or possibly square (cf. Fig. 14, C) it was thought that polygonal-shafted columns were unknown, but the German excavations at Ashur have brought to light a capital of a column made of black basalt,[80] together with a portion of the shaft which is sixteen-sided, and probably belongs to about the time of Tiglath-Pileser I (1100 B.C.). This column at one time bore an inscription, but unfortunately it is worn away. The remains of another polygonal-shaped basalt column[81] was discovered on the same site. It is eight-sided, and bears an inscription of Shamhsi-Adad, the son of Tiglath-Pileser I. Two interesting column-bases made of limestone were also discovered at Ashur,[82] under the brick-pavement of a late Assyrian dwelling-house. One of these consists in a plinth, a torus and a thin over-plate, all made in one piece, while in the other case a part of the shaft is preserved with the torus.