John looked at the key and glanced longingly at the lock. He had no doubt that it would fit. But he obeyed orders and did not try it. Instead he thrust it into the old ragged mattress of his cot. He resumed his physical exercises the next day, giving an hour to them in the morning and another hour in the afternoon. They helped, but the breath of hope was doing more for him, both mind and body, than anything else. He felt so strong and active that he did not chaff Diego any more lest the Mexican, stolid and wooden though he was, might suspect something.
He let out the thread according to orders, and, at the usual time, drew in a dagger, slender and very light, but long and keen as a razor. He read readily the purpose of this. There would be much danger when he opened the door to go out, and he must have a weapon. He ran his finger along the keen edge and saw that it would be truly formidable at close quarters. Then he hid it in his mattress with the key, wound up the thread, and put it in the same place. All had now come to pass as promised, and he felt that the remainder would depend greatly upon himself. So he settled down as best he could to three days and nights of almost intolerable waiting. Dull and heavy as the time was, and surely every second was a minute, many fears also came with it. They might take it into their heads to change that ragged old mattress of his, and then the knife, the thread, and the key would be found. He would dismiss such apprehensions with the power of reason, but the power of fear would bring them back again. Too much now depended upon his freedom from examination and search to allow of a calm mind.
Yet time passed, no matter how slow, and he was helped greatly by his physical exercises, which gave him occupation, besides preparing him for an expected ordeal. Hope, too, was doing its great work. He could fairly feel the strength flowing back into his veins, and his nerves becoming tougher and more supple. Every night he looked out at the mountain slope and itemized his little garden there that he had never touched, shrub by shrub, stone by stone, not forgetting the great cactus. He told himself that he did not expect to see any light there again, because the unknown sender of messages had not spoken of another, but, deep down at the bottom of his heart, he was hoping to behold the torch once more, and he felt disappointment when it did not appear.
He tried to imagine how Phil looked. He knew that he must be a great, strong boy, as big as a man. He knew that his spirit was bold and enterprising, yet he must have had uncommon skill and fortune to have penetrated so deep into Mexico, and to preserve a hiding-place so near to the great Castle of Montevideo. And the friends with him must be molded of the finest steel. Who were they? He recalled daring and adventurous spirits among his own comrades in the fatal expedition, but as he ran over every one in his mind he shook his head. It could not be.
It is the truth that, during all this period, inflicting such a tremendous strain upon the captive, John never once tried the key in the door. It was the supreme test of his character, of his restraint, of his power of will, and he passed it successfully. The thread, the dagger, and the key lay together untouched in the bottom of the old mattress, and he waited in all the outward seeming of patience.
The first night was very clear, on the second it rained for six or seven hours. The entire mountainside was veiled in sheets of water or vapor, and John saw nothing beyond his window but the black blur. The third night was clear, but when the morning of the fourth day dawned, John thought, from the clouds that were floating along the mountain slope, it would be rainy again. He hoped that the promise would come true. Darkness and rain favor an escaping prisoner.
The last day was the most terrible of all. Now and then he found his heart pounding as if it would rack itself to pieces. It was difficult to go through with the exercises, and it was still more difficult to preserve calmness of manner in the presence of Diego. Yet he did both. Moreover, his natural steadiness seemed to come back to him as the hour drew near. His was one of those rare and fortunate natures which may be nervous and apprehensive some time before the event, but which become hard and firm when it is at hand. Now John found himself singularly calm. The eternity of waiting had passed, and he was strong and ready.
Diego brought him his supper early, and then, through his loophole, he watched the twilight deepen into the night. And with the night came the rain that the morning and afternoon clouds had predicted. It was a cold rain, driven by a wind that shrieked down the valley, and drops of it, hurled like shot the full width of the slit, struck John in the face. But he liked the cool sharp touch, and he felt sure that the rain would continue all through the night. So much the better.
John's clothing was old and ragged, and he wore a pair of heelless Mexican shoes. He had no hat or cap. But a prisoner of three lonely years seeking to escape was not likely to think of such things.
He waited patiently through these last hours. He was compelled to judge for himself when midnight had come, but he believed that he had made a close calculation. Then he took a final look through the loophole. The wind, with a mighty groaning and shrieking, was still driving the rain down the slopes, and nothing was visible. Then, with a firm hand, he took from the bed the thread, the knife, and the key. It was not likely that he would have any further use for the thread, but for the sake of precaution he put it in his pocket. He also slipped the dagger into the back of his coat at the neck, after a southwestern fashion which allowed a man to draw and strike with a single motion.