It is well known that all the contributions levied in the King's name do not invariably appear set out in full in the records, and there were certainly other sources of revenue open to the Chancellor, of which he doubtless took the fullest advantage.[26] The difficulty in this case is not so much his raising the funds needed for carrying out these works (which he undoubtedly did), but to account for their rapid completion in so short a time. If, however, it was possible, only seven years later, for Richard himself to build, in a far more inaccessible situation, the _entire castle_ of Chateau Gaillard in the short space of a single year, it need not have been so difficult for Longchamp to carry out in two or three years the works we are about to describe, especially when we consider that he had practically _unlimited_ funds at his disposal.[27] Until the period of which we write, the area enclosed by the Tower fortifications lay wholly _within_, and to the west of the ancient city wall, which had been utilized to form its eastern curtain. The perimeter was now to be largely increased by the addition of a new outer ward, "W," extending entirely round the fortress, having a new curtain wall of _stone_, furnished with two large bastions (now entirely re-modelled and modernised), known as the "Legge Mount" and "Brass Mount" towers, "S" and "T." The so-called "North Bastion," capping the salient angle of the wall between them, being a purely modern work of recent date, has been _intentionally_ omitted from the plan. The inner ward now received a large addition. To the east of the White Tower, the old Roman city wall, where it crossed the line of the new works (see plan), was entirely demolished, and a new wall, some one hundred and eighty feet further to the east, and studded with numerous towers at frequent intervals, took its place, and on the north, west, and south replaced the former palisaded bank and ditch. Most of these towers, as at first constructed, were probably open at the gorge, or inner face, and not until a later period were they raised a stage, closed at the gorge, and in several instances had the early fighting platforms of timber replaced by stone vaulting. When the remains of the Wardrobe Tower "s" were exposed some years ago by the removal of the buildings formerly known as the "Great Wardrobe," "z" about sixteen feet of the Roman city wall was found to have been incorporated with it; and so recently as 1904 several excavations were made immediately to the south of it in order to ascertain, if possible, whether any traces of the continuation southwards towards the river of the line of the Roman wall could be found, or any foundations indicating the point at which it turned westwards; but the demolitions and rebuildings upon the site have been so numerous and so frequent that all traces have been obliterated, nor is it probable that any other remains of the Roman wall will ever be laid bare within the Tower area.[28]