The fighting was hot, for the rebels felt that if San Isidro was taken, nothing would remain to them but the mountains. They had constructed a high embankment just outside of their capital, and this they were defending vigorously, many of their leading generals being at the front to direct the movements. But General Lawton was now in his element, and feeling that his troops would do whatever he asked of them, he began to spread out to the right and the left, thus enfilading the trenches behind the embankment, which presently became so uncomfortable that the rebels had to leave them. At the same time a centre column continued the attack from the front--a centre column composed principally of Minnesota troops and the regiment to which Ben belonged. "They are leaving the trenches!" exclaimed Major Morris, who was watching the progress of the battle through a field-glass. "Forward, boys! They are on the run again!" A rattle of rifle-shots followed, and the battalion carried the middle of the embankment with a wild rush, planting Old Glory on the very top a minute later. Then the regiment pushed on for San Isidro proper. A hot skirmish was had on the main street of the town; but the Filipinos had had enough of it, and by nightfall were making for the mountains as rapidly as their demoralized condition would permit. Senor Romano had told Ben where Benedicto Lupez and his brother Jose had been stopping in San Isidro, and as soon as the young captain could get the opportunity he hurried around to the place, which was a large private boarding-house. "There is a man here by the name of Lupez, I believe," he said, as he presented himself, followed by a detachment of half a dozen of his men. The boarding-house keeper, who had just hung out a white flag, eyed him suspiciously. "How do you know that Senor Lupez is here?" he questioned slowly. "I know it, and I want to see him at once," returned Ben, sharply. "He is--is not here--he--he went away this morning," came with much hesitation. "Don't ye believe him, captain," put in Dan Casey, who was in the detachment. "I will search the house," said Ben, quietly. The keeper of the boarding-place protested, but his protest was of no avail. The house was searched from top to bottom, and in a back wing they found Benedicto Lupez in bed, suffering from a badly injured leg, the result of trying to ride a half-broken horse which the insurgents had captured from the Americans. He greeted the visitors with a villanous scowl. At first he tried to deny his identity, but the Americans had been furnished with his photograph, and a wart on his forehead proved a clew that was conclusive. At once his effects were searched, and under his pillow was found a leather bag containing fifty thousand dollars in gold and in American bank bills. "This is the money you stole from Braxton Bogg," said Ben, severely. "You need not deny it. Where is the rest?"