Captain Flanger was at the critical point in his operations, and he was too busy with the commander to give any attention to the negro, whom he regarded with the contempt begotten of his Southern education. Dave was intelligent enough to understand the situation accurately, and he realized that it was rapidly becoming critical. He knew that Christy was unarmed, and that the whole attention of the pirate was concentrated upon him, so that he could do nothing to help himself. He knew also that if he attempted to leave the cabin to procure assistance, Flanger would shoot him with as little remorse as he would kill a coon in the woods. Watching his opportunity without trying to get behind the intruder till the decisive moment came, he sprang into the position he had selected in advance, and brought down the heavy head of the feather duster upon the temple of the privateersman. Probably it was the shock quite as much as the force of the blow that brought down the steward's victim. But it was a heavy stroke, for the wood of the feather duster was split into many pieces, and the stumps of the feathers were scattered all over the table. The onslaught could not fail to be very confusing to the ideas of the intruder, and he seemed to be tangled up in the arm-chair in which he had been seated. Captain Flanger was a man of stalwart proportions, and Christy realized that he was no match for him in a hand to hand encounter, even with the aid of the steward, for the ruffian would not fail to use his revolvers. Dave was not satisfied with what he had done, and as his foe went over in the chair, he sprang upon him, and tried to wrest the pistol from his hand, and a struggle on the floor was begun, the result of which could not be foreseen. Christy took in the situation at a glance, and while the steward and his victim were rolling and writhing on the floor, he darted into his stateroom, the door of which had been open all the time, and took his heavy revolvers from the drawer where he kept them, charged for immediate use. When he rushed back to the cabin, Flanger had got the better of his foe, and had risen to his feet, with his grasp upon the throat of the steward. Then he hurled him from him with a vigorous movement with his left hand, while he raised the right with the evident intention of shooting him. The commander saw the imminent peril of Dave; he took a hasty aim and fired before the intruder had time to do so. He was a good shot with the navy revolver, for he had taken lessons and practised a good deal with the weapon.