The mutinous populace of London at his instigation took to arms; and the prince was obliged to levy an army of thirty thousand men in order to suppress them.

Even this second rebellion did not provoke the king to any act of cruelty; and the earl of Glocester himself escaped with total impunity.

He was only obliged to enter into a bond of twenty thousand marks, that he should never again be guilty of rebellion; a strange method of enforcing the laws, and a proof of the dangerous independence of the barons in those ages! These potent nobles were, from the danger of the precedent, averse to the execution of the laws of forfeiture and felony against any of their fellows; though they could not, with a good grace, refuse to concur in obliging them to fulfil any voluntary contract and engagement into which they had entered.
{1270.} The prince, finding the state of the kingdom tolerably composed, was seduced by his avidity for glory, and by the prejudices of the age, as well as by the earnest solicitations of the king of France, to undertake an expedition against the infidels in the Holy Land;[*] and he endeavored previously to settle the state in such a manner, as to dread no bad effects from his absence.

As the formidable power and turbulent disposition of the earl of Glocester gave him apprehensions, he insisted on carrying him along with him, in consequence of a vow which that nobleman had made to undertake the same voyage: in the mean time, he obliged him to resign some of his castles, and to enter into a new bond not to disturb the peace of the kingdom.[**] * M.Paris, p.

677 ** Chron.