Shortly after this, he received the demands of the refractory Earls, complaining of the non-observance of the charters, of the tallages, aids and requisitions, and of the tax on wool. Declining to give an answer at present, on the 22nd of August he set sail for Flanders. On the very next day the Earls appeared in the Exchequer Chamber, and peremptorily forbad the collection of the irregularly granted eighth, until the charters had been signed which had been the express condition of the grant. The necessity for concession had become obvious, and in a Parliament summoned on the 6th of October, the promised confirmation was given by the Prince. The Earls, who appeared in arms, with troops, insisted upon the addition of some supplementary clauses, which have since been known as the statute “De tallagio non concedendo.” They further demanded that the late grant should be considered illegal; it was therefore cancelled, and a new constitutional grant of a ninth was made in its place. Prince Edward’s confirmation was renewed by the King in person at Ghent. It was again renewed, in 1299, with an unsatisfactory clause “saving the rights of the Crown,” which the King was obliged subsequently to remove, and finally, in 1301, at the Parliament of Lincoln. The charters thus confirmed were the amended charter of Henry III., the additions to it were contained in the supplementary articles of the two Earls, which forbid what had hitherto been undoubtedly constitutional, the arbitrary tallaging of towns and taxing of wool. They contained however a clause “saving the old rights of the King,” and Edward took advantage of this afterwards, in 1304, to continue the old wool-tax and to tallage the towns in his own domain.[50] [Sidenote: Appearance of Wallace.]