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email turrets and one pier. At a later period, a series
of piers two feet wide and three feet three inches deep, ■were built against this wall, without regard to the previous apertures, several of which are partly covered by them. About twelve feet from the ground, arches are thrown from pier to pier—these, too, differing in form, from the flattest to the acutest pointed arch. Above these i3 reared a high parapet, with one embrasure over each pier, leaving an interval of twenty inches between it and the wall behind, with which it is connected by transverse blocks of stone at different distances.
The reasons which probably led to the singular mode of construction it exhibits, have furnished matter for considerable discussion amongst antiquarians, though we believe they admit of very easy explanation. The main wall, it is evident, was originally at once that of the town and of a mansion or palace, as is indicated by the windows which are filled up. As the attacks of the French, the civil wars of our own country, or increasing conviction of the necessity of better defences, led to the strengthening of the fortifications, this being a seaward wall, yet with a small patch of land between it and the water, did not admit of the additions of regular machicolations, as they would have rather weakened it, and increased the tendency to slip forward. This led to the combination of the buttress with an advanced open arch, securing at once an immense increase of strength to the wall, with capabilities of defence far superior to the ordinary form of machicolation. In all probability, from two to three centuries intervened between the erection of the wall and the addition of the blind piazza, the latter perhaps dating from the earlier part of the 14th century. From the fourth of these arches
BLUE ANCHOR POSTERN GATE Opens into a winding paved lane of the same name, in (vhich are seen the sides of the buildings whose fronts
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