About six o'clock he was recalled to the Casa Vega by the news that the French gallery had reached the wall and the tunnelling had ceased. It would take them some four hours, Jack conjectured, to tamp their mine; when that was done they would no doubt retire from the tunnel, and it would then be safe for the Spaniards to tamp their mine in turn. If they started to do so earlier, the sound would betray them. At ten o'clock all sounds from the French end had ceased; then Jack, after allowing a short interval, set his men to perform the tamping. Working without relaxation, they completed the task by two in the morning. Within four or five hours the French would explode their mine beneath the wall.
The first thing Jack did on being awakened by Pepito half an hour before dawn was to enquire whether any sounds of the French progress had been heard in the Casas Tobar and Vallejo. In the former he learned the mining had been heard for several hours; in the latter there had been no sounds at all. Satisfied that immediate work would only be required in the Casa Vega, he proceeded to get his men into order.
His plan, carefully thought out on the previous day, was to withdraw his garrison from the Casa Vega, leaving only one man to fire the mine; otherwise a large number would be uselessly sacrificed. The inrush of the French after the explosion of their mine was to be the signal for the firing of his own, and that in turn the signal for a sortie of the whole of his available force. By this means he hoped to drive the French back to such a distance that he could discover and blow up the galleries they were driving into the Casa Tobar, and probably into the Casa Vallejo also.
It still wanted some minutes of dawn when his motley force was drawn up in the plaza behind the walls of Vega and Tobar. It numbered only 350 men in all--some haggard burghers of the city, some rugged guerrilleros from the country districts, a few regulars from General Fiballer's Valencian regiment, a few of Palafox's grenadiers. All bore signs of the stress and toil of the past few weeks; but all were animated by one spirit of indomitable resolution. Fifty of the best marksmen were at once picked out to garrison Tobar and Vallejo and harass the French with musketry-fire from the windows. Eighty good men were drafted as a reserve. This left 220, of whom 120 were told off to make the main sortie over the barricade in the street between Tobar and Vallejo, while 30 were appointed to guard the shorter barricade across the lane between Tobar and Vega. The remaining 70 were ordered to march to the upper side of the Casa Vega and make a demonstration at the barricade erected in the street there.