It will be seen, by a reference to the plan of the city of Teuchira, that there is little now remaining within the limits of its walls to call for any particular details. The destruction of the town has, in fact, been so complete, that it is scarcely more than a heap of confused ruins; and the various fragments of building which are scattered over its surface encumber the ground-plans so effectually, that more labour and time would be necessary for their removal than the buildings would probably merit. It is evident that Teuchira has been intentionally destroyed; and that the solidity of its walls has alone prevented them from being confounded in the general wreck. The perfect state in which these still continue to remain will, however, compensate for the losses we have sustained within their limits; and we may consider them as affording one of the best examples extant of the military walls of the ancients. Procopius has informed us that the city of Teuchira was very strongly fortified by the Emperor Justinian; and the restoration of the original wall which inclosed it (which we may suppose to have been laid in ruins by the Vandals) was probably the chief point to which the historian alluded. We are not aware of any data by which the precise period of the first erection of these walls may be ascertained; but their solidity would induce us to refer them to an epoch anterior to the time of the Ptolemies; while the regularity with which they have, at the same time, been constructed would prevent us from assigning to them a very early date[1]. It is well known that the most ancient walls which remain to us are as remarkable for the irregularity as they are for the solidity of their structure; and the term _Cyclopean_, which has been generally applied to them, has almost become synonymous with _irregular_. The existing walls of Teuchira have undoubtedly been constructed at a period when architecture had attained great perfection; the mode of building adopted in them is uniform and regular, well calculated from its nature to save labour and expense, and is such as could only have been successfully employed where the blocks of stone used were large and heavy. Two ranges of stone, longitudinally placed, form the outer and inner surface of the structure; and these are crossed by a single block at regular intervals the length of which is the thickness of the wall: a space is left between the longitudinal ranges, about equivalent to the breadth of the stones which compose them; and this is filled up with what is usually termed rubble, (which here appears to be the refuse of the material employed,) and occasionally with a single stone. Little or no cement has been used in the building (so far at least as we were able to discover); and, indeed, the weight of the several blocks, with the pressure upon them, would seem to render it wholly unnecessary.