The next morning, as Frank sat at the table in the wardroom, engaged in answering the letters he had received by the dispatch-boat, and Archie was in his office straightening out his books and papers, a bullet came suddenly crashing through the cabin--a signal that the rebels had again made their appearance. Frank, who had become accustomed to such interruptions, deliberately wiped his pen, corked his ink-stand, and was carefully putting away his letters, when there was a hurrying of feet in the office; the door flew open, and Archie, divested of his coat, bounded into the cabin, exclaiming: "A fellow can't tell when he's safe in this country. I wish I was back in the fleet-paymaster's office. I wouldn't mind a good fair fight, but this thing of being shot at when you least expect it isn't pleasant." As Archie spoke, he hurriedly seized a gun from the rack, which had been put up in the cabin in order to have weapons close at hand, and sprang up the ladder that led into the pilothouse. Frank, although he laughed heartily at his cousin's rapid movements, was a good deal surprised, for he had always believed him to be possessed of a good share of courage. It would, however, have tried stronger nerves than Archie's; but men who had become familiar with such scenes, who had learned to regard them merely as something disagreeable which could not be avoided, could not sympathize with one in his situation, and many a wink was exchanged, and many a laugh indulged in, at the expense of the "green paymaster." When Frank had put away his writing materials, he ran below to see that the ports were all closed; after which he returned to the wardroom, and, securing a rifle, went into the pilot-house, where he found Archie engaged in reloading his gun, while the officers were complimenting him on a fine shot he had just made. "Mr. Nelson," exclaimed the doctor, as Frank made his appearance, "I guess your white horseman is done for now. The paymaster lifted him out of his saddle as clean as a whistle." Frank looked out at one of the ports, and, sure enough, there was the white horse running riderless about, and his wounded master was being carried behind the levee. The officers continued to fire as often as a rebel showed himself, but the latter seemed to have lost all desire for fighting, for they retreated to the plantation-house which stood back from the river, out of range of the rifles, where they gathered in a body as if in consultation, now and then setting up defiant yells, which came faintly to the ears of those in the pilot-house. "They are saucy enough now that they are out of harm's way," said Archie, turning to his cousin. But the latter made no reply. He stood leaning on his rifle, gazing at the guerrillas, as if busily engaged with his own thoughts, and finally left the pilot-house and sought an interview with the captain.