The Flint Tower lies due east, at a distance of 90 feet from the Devereux Tower, but as it was found to be in an entirely ruinous state in 1796, the old fabric was pulled down and the present ugly brick tower rose in its place. The old tower had been known by the unflattering name of “Little Hell,” probably from the noisomeness of its dungeons, and it had the evil reputation of having the worst prisons in the fortress. Another 90 feet from the Flint Tower stands the Bowyer Tower, of which only the base is ancient, the remainder of the building being modern; this tower dates from the reign of Edward the Third, and it was here that the Duke of Clarence is traditionally said to have been drowned in a butt of Malmsey (Malvoisie) wine. According to those learned historians of the Tower, Britton and Brayley, who wrote in the early part of the nineteenth century, there was a vault in a dungeon in this tower closed by a trap door, which opened on a flight of steps; from these steps a narrow cell led into a secret passage made in the thickness of the Ballium wall. This was one of the many secret passages which ran below ground, and of which, as has already been noticed, an important one was discovered when the Main Guard building was demolished in 1899. Mr G. J. Clark, a great authority in these matters, has stated his belief that there were several of these secret passages in the fortress. One of these, he thinks, ran between the White Tower and the King’s House, and Father Gerard’s account of the way he was led to and from the White Tower and the Governor’s or King’s House points to an underground passage between those buildings. It has been surmised that a subterranean passage led from out the Tower below the Thames to the Southwark side of London; in the Beauchamp Tower a secret passage was discovered in the thickness of the Ballium wall, where persons might have been placed to watch and overhear all that went on within the tower.[6] The Bowyer Tower was so named because it was the dwelling of the royal maker of bows, and the place where he turned out the Long Bow, as well as the Cross Bow, and many other mediæval weapons of destruction, such as the Balistar, the Scorpion, and the Catapult. In 1223 one Grillot made here the “balistar corneas,” as that mysterious weapon is described in an old record, and for his labour he was rewarded by the gift of a new gown for his wife.