Gauthier instantly realized what had happened, but it was too late. Under an elaborate feint with other preparations, Maître Jerôme had taken advantage of the soft ground beneath the castle and had driven a mine, beginning at a safe distance in the rear and cunningly concealing the entrance and the earth excavated until it was fairly under a vital section of the wall. Then a large chamber had been cleared and wooden posts soaked with tallow had been put under the masonry to keep it from falling on the miners. As the last of them retreated, a torch was set to the woodwork, the whole chamber having been crammed with inflammables. Presently the fire ate away the posts. With a thundering crash a vital section of the wall collapsed. [Illustration: ATTACK ON A WALL WITH THE AID OF THE SAP At the top of the wall the scaffolding can be seen (theoretical figure from Viollet-Le-Duc).] The besieged had not realized the situation in time to drive a countermine or to erect a second wall inside the danger point. The moment the St. Aliquis men saw the wall topple they rushed forward. The defenders met them bravely in the breach and there was bloody swordplay, but the thrust of numbers was irresistible. Gauthier and part of his men fled, indeed, to the donjon and barred the entrance, but they were utterly demoralized. All the women and children, packed into the tower, were shrilly lamenting the dead and were otherwise frantic. Most of the provisions had been in a storehouse outside the donjon. The end, therefore, was certain. At the end of the next day the garrison in the donjon surrendered on promise of life and limb for all, and courteous treatment for the knights. The storming of Tourfière ended the war. Conon might, indeed, have ruined Foretvert utterly, but now the duke intervened. It was not for his interests to have any vassal rendered unfit to meet his feudal obligations. Conon, however, was able to exact very high terms. For evacuating Tourfière he obtained the cession of a village whose peasants paid very large dues, and two of the viscount's best vassals also transferred their homage to St. Aliquis. The contending parties swore to peace upon the most precious relics at the abbey, and exchanged the kiss of amity. Henceforth Foretvert, a sadder and wiser seigneur, has been outwardly friendly with his powerful neighbor and even came as a sulky guest to Alienor's wedding. FOOTNOTES: [67] Primogeniture did not exist on the Continent as in England. The elder son was entitled to the largest share of the estate, but by no means to the whole. [68] They became formal law by about 1260, in the days of Louis IX. [69] French opinion, of course, condemned this count, not for being a traitor to his country, but for breach of fealty to his personal lord. [70] The terrible oath of Henry II of England and other great chieftains. [71] Later custom would probably have sent a fur-trimmed glove.