In 1278 no less than 600 Jews were imprisoned in the Tower on a charge of clipping and debasing the coin. Many of them are said to have been confined in that gloomy vault now called "Little Ease," where, from the entire absence of sanitary accommodation and proper ventilation, their numbers were rapidly thinned by death.[50] [Illustration: THE TOWER OF LONDON.] The mural arcade of the inner curtain wall between the Bell tower, "a," the Beauchamp tower, "b," and the Devereux tower, "c," is probably of this period. In spite of much patching and alterations to adapt it for the use of firearms, it bears a close resemblance in its design to those of Caernarvon Castle and Castle Coch, near Cardiff. The great quay, "O," does not appear to have been walled through; it had its own gates, "P," at either end. Two small towers (now removed) protected the drawbridges of the two posterns, "H" and "K." The outer curtain wall, "R," commanded the ditch and wharf, and was in its turn commanded by the more lofty inner curtain, "8," and its towers, and these again by the keep, while the narrow limits of the outer ward effectually prevented any attempts to escalade them by setting up movable towers, or by breaching them with battering rams. Any besiegers who succeeded in entering the outer ward would be overwhelmed by the archery from these wall arcades at such point-blank range that even plate armour would be no protection, while, should they succeed in carrying the inner ward, the remnant of the defenders might retreat to the keep, and, relying upon its passive strength, hold out to the last within its massive walls in hope of external succour, before famine or a breach compelled a surrender. The Scotch wars of Edward I. filled the Tower with many distinguished prisoners, among whom were the Earls of Ross, Athol, and Menteith, and the famous Sir William Wallace. They seem to have experienced a varying degree of severity: some were ordered to be kept in a "strait prison in iron fetters," as were the Bishops of Glasgow and St. Andrew's (though they were imprisoned elsewhere); others are to be kept "body for body," that is to say, safely, but not in irons, with permission to hear mass; while a few are to be treated with leniency, and have chambers, with a privy chamber or latrine attached.[51] In 1303 the King (then at Linlithgow) sent the Abbot of Westminster and forty-eight of his monks to the Tower on a charge of having stolen L100,000 of the royal treasure placed in the abbey treasury for safe-keeping! After a long trial, the sub-prior and the sacrist were convicted and executed, when their bodies were flayed and the skins nailed to the doors of the re-vestry and treasury of the abbey as a solemn warning to other such evildoers,[52] the abbot and the rest of the monks being acquitted.