The girl shuddered, and crouching close behind Sing hurried below. A moment later she heard the boom of the old brass six pounder which for many years had graced the Ithaca’s stern. In the bow Professor Maxon had mounted a modern machine gun, but this was quite beyond Sing’s simple gunnery. The Chinaman had not taken the time to sight the ancient weapon carefully, but a gleeful smile lit his wrinkled, yellow face as he saw the splash of the ball where it struck the water almost at the side of the prahu. Sing realized that the boat might contain friendly natives, but he had cruised these waters too many years to take chances. Better kill a hundred friends, he thought, than be captured by a single pirate. At the shot the prahu slowed up, and a volley of musketry from her crew satisfied Sing that he had made no mistake in classifying her. Her fire fell short as did the ball from the small cannon mounted in her bow. Virginia was watching the prahu from one of the cabin ports. She saw the momentary hesitation and confusion which followed Sing’s first shot, and then to her dismay she saw the rowers bend to their oars again and the prahu move swiftly in the direction of the Ithaca. It was apparent that the pirates had perceived the almost defenseless condition of the schooner. In a few minutes they would be swarming the deck, for poor old Sing would be entirely helpless to repel them. If Dr. von Horn were only there, thought the distracted girl. With the machine gun alone he might keep them off. At the thought of the machine gun a sudden resolve gripped her. Why not man it herself? Von Horn had explained its mechanism to her in detail, and on one occasion had allowed her to operate it on the voyage from Singapore. With the thought came action. Running to the magazine she snatched up a feed-belt, and in another moment was on deck beside the astonished Sing. The pirates were skimming rapidly across the smooth waters of the harbor, answering Sing’s harmless shots with yells of derision and wild, savage war cries. There were, perhaps, fifty Dyaks and Malays—fierce, barbaric men; mostly naked to the waist, or with war-coats of brilliant colors. The savage headdress of the Dyaks, the long, narrow, decorated shields, the flashing blades of parang and kris sent a shudder through the girl, so close they seemed beneath the schooner’s side. “What do? What do?” cried Sing in consternation. “Go b’low. Klick!” But before he had finished his exhortation Virginia was racing toward the bow where the machine gun was mounted. Tearing the cover from it she swung the muzzle toward the pirate prahu, which by now was nearly within range above the vessel’s side—a moment more and she would be too close to use the weapon upon the pirates.