The Pharos, or light-house, if any such existed, was probably erected on the high ground on point B, in the neighbourhood of the fort at its eastern extremity, and columns and other fragments of building, at the back of the western port, point out the places of those structures usually erected by the ancients near their harbours, for the accommodation of the merchants and sailors: here also are the remains of a bridge which was formerly thrown across the ravine, running down to the wall of this port. We have already said that traces of the city-wall are observable between the quarry which contains the amphitheatre and the gateway; and a portion of it may also be remarked extending from the latter to the mountains at the back of the town; where they are connected with other parts of it running along the foot of the range to the inner bank of the eastern ravine. There again decided remains of the wall may be traced running parallel with the same ravine; and which, passing near the bridge represented in plate (p. 362,) continue towards the sea as far as the remains of the second bridge which we have already mentioned. Beyond this we could perceive no more traces of the wall; although it seems more than probable that it extended on this side to the beach, (as we find it to have done on the opposite side to the westward,) and that it passed along parallel with the sea, till it joined the portions connecting the two forts of the eastern harbour, which we have already observed to be remaining. We could not discover any traces of a gateway in the eastern wall of the city; but it is probable that there was formerly one on this side also, leading to the upper bridge, where some very strong works are still extant, in the form of a curve, as will appear by a reference to the plan. It is difficult to say how these works were connected with the remains of the wall between them and the mountains; and had our time allowed it, we should have excavated about them for the purpose of discovering the connection. We may reckon that the walls of Ptolemeta, when entire, inclosed a quadrangle of eighteen thousand English feet in circuit; and the line of wall which may be traced from the existing remains covers a space of at least thirteen thousand. A line drawn through the centre of the city, from north to south, would be about four thousand eight hundred feet in length; and that which should be drawn across it from east to west, about four thousand four hundred. The whole circuit of the city would thus be somewhat less than three English miles and a half[13]; its length, from north to south, something less than a mile[14], and its breadth from east to west something more than three-quarters[15].