The Bishop's Palace, a strongly-fortified position in the rear of the town, and the last to yield, was gallantly carried by the force under the brave General Worth. On the third day of the fight the lower city was stormed with the most tremendous fury, the troops burrowing through the stone walls of the houses in their progress, and the defenders of the place were all driven within the citadel of the town before night again settled down upon the unequal fight. Penned in by their furious assailants, the Mexicans had no hope in continuing the resistance after the misfortunes which overtook them. Ampudia, the general in command of the city, submitted a proposition for terms which resulted in the surrender and evacuation of the town. Thus, in three days, Monterey, a city so strong in position, and so well defended that its commander might have confidently defied a besieging army of double the force of that which sat down before its walls, was carried by repeated assaults. This was another of the training fields of Lieutenant Grant. The walls of the houses within the city were strongly built, affording ample defensive positions from which the Mexican soldiers could safely annoy the Americans. From the windows they fired down upon their assailants, disputing the possession of each dwelling with the most dogged tenacity. In the midst of this irregular strife, while the foe in the windows were remorselessly shooting down the daring soldiers in the streets below, the ammunition of the brigade to which Lieutenant Grant was attached was nearly exhausted. It was an unpleasant position to be in, without powder and ball to keep the enemy at bay; and it was therefore necessary to send for a fresh supply, which could only be obtained by traversing a distance of four miles. But who should be the messenger to ride or walk beneath those death-dealing muskets in the windows, which were showering storms of bullets at every blue-coat which appeared in the streets below? The service was so fraught with peril, if not with certain death, that the general in command was not willing to issue a peremptory order for any one to undertake the mission. He called for a volunteer.