The form, as far as can be gathered from the disturbed foundations, was somewhat irregular. The east and west walls were parallel, and the south wall ran at right angles with them, but the north wall had an outward bow-like projection. The walls, when the place was intact, enclosed a space of about 11 acres, and were from 12 feet to 14 feet thick, whilst the height of both walls and mural towers was somewhat more than 20 feet. The purpose of placing a strongly fortified town at this place was partly in order to command a view over the surrounding country, and partly to defend the Roman port which was situated on a branch of the River Limene,[9] or rather, just at the foot of the hill on the side of which it stood. [Illustration: FIG. 12. ROMAN WALLS, LYMNE, KENT] Among the discoveries made at Portus Lemanis there were two of remarkable and significant character. The first consisted of a mutilated altar-stone, bearing a much-worn inscription indicating the dedication of the altar by a praefect of the British fleet, named Aufidius Pantera, probably to Neptune. The stone was found built into the masonry of the principal gate, and from its worn condition, and the remains of barnacles which it still bore when found, it was justly inferred that it belonged to an earlier period than that of the building of the gate. The second discovery, of quite equal interest with the first, was that of a number of broken roof and other tiles, inscribed CLBR, which has been read _Classiarii Britannici_, Marines of the British fleet. [Illustration: FIG. 13. PORTUS LEMANIS (LYMPNE)] From these discoveries one may gather that at some period, probably before that of Constantine, a division of the British fleet was situated at Portus Lemanis, and that some of the buildings there were erected by the crew from the fleet. The principal gate, which may have been battered down during a siege, and required rebuilding, was evidently the work of a late date in the Roman period. This view is supported by a comparison of the whole building with the work at Anderida (Pevensey). The general arrangement of the walls, the disposition of the mural towers, or bastions, and the facing of regularly cut limestone blocks present points of very considerable similarity. It will be observed from a comparison of Portus Lemanis with Anderida (about to be described) that there is reason to think that both works belong to a date somewhat late in the Roman period. 8. ANDERIDA (PEVENSEY)