In the daytime he would lie concealed in some thicket, close to a road, his horse always picketed some distance from him. He would observe any men that passed along the road, the direction they were going, and thus be able to determine whether the guerrillas were gathering for a raid or not. If so, it was his duty to find their rendezvous, report with all possible speed, and bring a Federal force down upon them. When he thought best, he had no scruples in passing himself off as a guerrilla. It was only in case of urgent necessity that he rode in the daytime. For one reason he did not wish the guerrillas to know he was always accompanied by a dog. In the night he could not be recognized, and he was never in fear of a surprise, for Bruno always gave warning. To the guerrillas it was a matter of wonderment how the Federals so often found out their secret hiding places, and many a suspected Union man was accused of giving information, and suffered in consequence, when it was Harry who was the guilty party. Feeling safe, McNeil had left only one small company in Palmyra to guard the place, and to protect the prisoners, of whom he had nearly a hundred. He was away looking after other posts in his territory. The news of McNeil's absence and the small number of soldiers at Palmyra was borne to Porter and he determined to make a raid on the village, liberate the prisoners, and capture some of the Union citizens who had made themselves obnoxious to Porter and his gang. The news was given out and the guerrillas were rallying at a given place in the western part of the county. It was this gathering of the guerrillas that Harry was now watching. He quickly quieted the dog and the cause of his excitement was now apparent, for six men came riding past, all armed to the teeth. "There is deviltry on foot, old fellow," whispered Harry to Bruno, "and it 's up to us to find out what it is. There's twenty of these villains ridden past since we've been hiding here. "How I wish I could hear what they are saying," continued Harry. "I must, I _will_ find out what's brewing." Harry was in a place which he could not safely leave before night, so he waited impatiently for the coming darkness. As soon as he dared he made his way back to where he had left his horse, and cautiously led it to the road. He then mounted and rode in the direction the guerrillas had taken. Two or three times Bruno gave warning, and Harry quietly drew out by the side of the road and let men pass. He had gone some two or three miles when he came to a main road leading to Palmyra. Bruno showed unusual excitement, and Harry stopped and listened intently. From up the road there came the sound of the trampling of horses, as if a large body of cavalry was coming.