The commanders of the various ships exchanged visits. The Emden was practically the sole topic of their conversation. The Russian commander had just returned aboard his own ship after a visit to Lord Hastings. There came a call from the lookout-on the Sylph. "Cruiser coming into the harbor, sir!" Lord Hastings, Frank and Jack hurried to the bridge. "She shows no colors," muttered Frank. "Wonder who she is?" "Maybe the Emden come to pay a little social call," said Jack. "No," said Lord Hastings; "this cruiser has four smokestacks; the Emden has but three." "They could easily rig up another one," said Jack. "Lord Hastings, some way I feel that all is not right." "Nonsense," replied Lord Hastings. There was the sound of a shot from one of the Russian cruisers. "She'll show her colors now," said Lord Hastings. All glanced toward the approaching vessel. A flag was run tip the masthead. Lord Hastings made it out immediately. "Japanese," he said, unconsciously breathing easier. Slowly the cruiser came closer, heading right for the other ships of war in the harbor. Lord Hastings returned to his cabin and Frank followed him. Jack continued to gaze over the rail at the cruiser. Suddenly, why he never knew, he rushed hurriedly after his commander. "I am sure that is not a Japanese cruiser, sir," he cried. "I don't know why, but something tells me it is an enemy." "Nonsense," said Lord Hastings again. "You are a bit nervous. That's all." "No, sir, it isn't that," replied Jack. "I--" He was interrupted by the boom of a single big gun followed by a heavy outbreak of cannonading. Lord Hastings jumped to his feet and dashed to the bridge, Jack and Frank close at his heels. They glanced quickly at the supposed Japanese cruiser. But the Japanese ensign had been hauled down, and now there floated from the cruiser the flag of Germany! And the cruiser's fourth smoke stack had come down. "The Emden!" cried Lord Hastings. Bugles were sounding on all the allied ships, of war in the harbor, calling the men to quarters. Caught thus unprepared, the allied vessels were at an immense disadvantage. Suddenly there was a loud explosion aboard one of the Russian cruisers, and a moment later it burst into flames. Now the other ships poured broadsides into the Emden, but she stuck to her post. One of the two French destroyers suddenly dived, head-first, into the sea, one of the Emden's submerged torpedoes having dealt her a deathblow. A shell sped over the stern of the Sylph, but did no damage. Then, calmly, almost ignoring the remaining ships of the allied fleet, the Emden put about, and made off. Her raid had been successful, and it was another victory for the Kaiser. The Emden continued to rain shells at her foes until she was out of range. Not minded to take any unnecessary risk, Lord Hastings let the Emden get well out of range, before he gave the command for the Sylph to follow.