On board the Mindoro Parrington had found orders to take the relief guard for the wireless telegraph station to Mariveles the next morning. At six o'clock the little gunboat had taken the men on board, and was now steering across the blue Bay of Manila toward the little rocky island of Corregidor, which had recently been strongly fortified, and which lies like a block of stone between gigantic mountain wings in the very middle of the entrance to the Bay of Manila. Under a gray sail, which served as a slight protection from the sun, the soldiers squatted sullenly on their kits. Some were asleep, others stared over the railing into the blue, transparent water that rippled away in long waves before the bow of the little vessel. From the open skylight of the engine room sounded the sharp beat of the engine, and the smell of hot oil spread over the deck, making the burning heat even more unbearable. Parrington stood on the bridge and through his glass examined the steep cliffs at the entrance to the bay, and the bizarre forms of the little volcanic islands.

Except for a few fishing boats with their brown sails, not a ship was to be seen on the whole expanse of the water. The gunboat now turned into the northern entrance, and the long, glistening guns in the fortifications of Corregidor became visible. Up above, on the batteries hewn in the rocks, not a living soul could be seen, but below, on the little platform where the signal-post stood near the northern battery, an armed sentry marched up and down. Parrington called out to the signalman near him: "Send this signal across to Corregidor: 'We are going to relieve the wireless telegraph detachment at Mariveles, and shall call at Corregidor on our way back.'" The Corregidor battery answered the signal, and informed Parrington that Colonel Prettyman expected him for lunch later on. Slowly the Mindoro crept along the coast to the rocky Bay of Mariveles, where, before the few neglected houses of the place, the guard of the wireless telegraph station, which stood on the heights of Sierra de Mariveles, was awaiting the arrival of the gunboat.

The Mindoro was made fast to the pier. The exchange of men took place quickly, and the relief guard piled their kits on two mule-carts, in which they were to be carried up the steep hillside to the top, where a few flat, white houses showed the position of the wireless station, the high post of which, with its numerous wires, stood out alone against the blue sky. The relieved men, who plainly showed their delight at getting away from this God-forsaken, tedious outpost, made themselves comfortable in the shade afforded by the sail, and began to chat with the crew of the Mindoro about the commonplaces of military service. A shrill screech from the whistle of the Mindoro resounded from the mountain side as a farewell greeting to the little troop that was climbing slowly upward, followed by the baggage-carts. The Mindoro cast off from the pier, and, having rounded the neck of land on which Mariveles stood, was just on the point of starting in the direction of Corregidor, when the signalman on the bridge called Parrington's attention to a black steamer which was apparently steaming at full speed from the sea toward the entrance to the Bay of Manila.

"A ship at last," said Parrington. "Let's wait and see what sort of a craft it is."

While the Mindoro reduced her speed noticeably, Parrington looked across at the strange vessel through his glasses. The ship had also attracted the attention of the crew, who began to conjecture excitedly as to the nationality of the visitor, for during the past week a strange vessel had become a rather unusual sight in Manila. The wireless detachment said that they had seen the steamer two hours ago from the hill.

Parrington put down his glass and said: "About four thousand tons, but she has no flag. We can soon remedy that." And turning to the signalman he added: "Ask her to show her colors." At the same time he pulled the rope of the whistle in order to attract the stranger's attention.

In a few seconds the German colors appeared at the stern of the approaching steamer, and the signal flag, which at the same time was quickly hoisted at the foretopmast, proclaimed the ship to be the German steamer Danzig, hailing from Hong-Kong. Immediately afterwards a boat was lowered from the Danzig and the steamer stopped; then the white cutter put to sea and headed straight for the Mindoro.

"It is certainly kind of them to send us a boat," said Parrington. "I wonder what they want, anyhow." He gave orders to stop the boat and to clear the gangway, and then, watching the German cutter with interest, awaited its arrival. Ten minutes later the commander of the Danzig stepped on the bridge of the Mindoro, introduced himself to her commander, and asked for a pilot to take him through the mines in the roads.

Parrington regarded him with astonishment. "Mines, my dear sir, mines? There are no mines here."

The German stared at Parrington unbelievingly. "You have no mines?"