“I told her your mind would be filled with more important matters,” returned Pedro, seeking approval. “Was I not right?”
Roddy, whose mind was filled only with Inez and who still felt the touch of her hand upon his, assented without enthusiasm.
McKildrick was for deciding by lot who should explore the underground passage, but Roddy protested that that duty belonged to him alone. With a rope around his waist, upon which he was to pull if he needed aid, an electric torch and a revolver he entered the tunnel. It led down and straight before him. The air was damp and chilly, but in breathing he now found no difficulty. Nor, at first, was his path in any way impeded. His torch showed him solid walls, white and discolored, and in places dripping with water. But of the bats, ghosts and vampires, for which Peter had cheerfully prepared him, there was no sign. Instead, the only sounds that greeted his ears were the reverberating echoes of his own footsteps. He could not tell how far he had come, but the rope he dragged behind him was each moment growing more irksome, and from this he judged he must be far advanced.
The tunnel now began to twist and turn sharply, and at one place he found a shaft for light and ventilation that had once opened to the sky. This had been closed with a gridiron of bars, upon which rested loose stones roughly held together by cement. Some of these had fallen through the bars and blocked his progress, and to advance it was necessary to remove them. He stuck his torch in a crevice and untied the rope. When he had cleared his way he left the rope where he had dropped it. Freed of this impediment he was able to proceed more quickly, and he soon found himself in that part of the tunnel that had been cut through the solid rock and which he knew lay under the waters of the harbor. The air here was less pure. His eyes began to smart and his ears to suffer from the pressure. He knew he should turn back, but until he had found the other end of the tunnel he was loth to do so. Against his better judgment he hastened his footsteps; stumbling, slipping, at times splashing in pools of water, he now ran forward. He knew that he was losing strength, and that to regain the mouth of the tunnel he would need all that was left to him. But he still pushed forward. The air had now turned foul; his head and chest ached, as when he had been long under water, and his legs were like lead. He was just upon the point of abandoning his purpose when there rose before him a solid wall. He staggered to it, and, leaning against it, joyfully beat upon it with his fists. He knew that at last only a few feet separated him from the man he had set out to save. So great was his delight and so anxious was he that Rojas should share in it, that without considering that no slight sound could penetrate the barrier, he struck three times upon it with the butt of his revolver, and then, choking and gasping like a drowning man, staggered back toward the opening. Half-way he was met by McKildrick and Peter, who, finding no pressure on the end of the rope, had drawn it to them and, fearing for Roddy’s safety, had come to his rescue. They gave him an arm each, and the fresh air soon revived him. He told McKildrick what he had seen, and from his description of the second wall the engineer described how it should be opened.
“But without a confederate on the other side,” he said, “we can do nothing.”
“Then,” declared Roddy, “the time has come to enroll Vicenti in the Honorable Order of the White Mice.”
On their return to Roddy’s house they sent for Vicenti, and Roddy, having first forced him to subscribe to terrifying oaths, told the secret of the tunnel.
Tears of genuine happiness came to the eyes of the amazed and delighted Venezuelan. In his excitement he embraced Roddy and protested that with such companions and in such a cause he would gladly give his life. McKildrick assured him that when he learned of the part he was to play in the rescue he would see that they had already taken the liberty of accepting that sacrifice. It was necessary, he explained, that the wall between the tunnel and the cell should fall at the first blow. An attempt to slowly undermine it, or to pick it to pieces, would be overheard and lead to discovery. He therefore intended to rend the barrier apart by a single shock of dynamite. But in this also there was danger; not to those in the tunnel, who, knowing at what moment the mine was timed to explode, could retreat to a safe distance, but to the man they wished to set free. The problem, as McKildrick pointed it out, was to make the charges of dynamite sufficiently strong to force a breach in the wall through which Rojas could escape into the tunnel, and yet not so strong as to throw the wall upon Rojas and any one who might be with him.
“And I,” cried Vicenti, “will be the one who will be with him!”
“Good!” said Roddy. “That’s what we hoped. It will be your part, then, to prepare General Rojas, to keep him away from the wall when we blow it open, and to pass him through the breach to us. Everything will have to be arranged beforehand. We can’t signal through the wall or they would hear it. We can only agree in advance as to the exact moment it is to fall, and then trust that nothing will hang fire, either on your side of the barrier or on ours.”