"Listen," said he, in a low whisper.
The tread of the sentry was heard, and at that moment, the glare of a lantern fell upon the trees, bordering a field opposite the window. Beyond that field the ground was broken and uneven, covered with tall bushes, fern, and masses of rock, and sloping upwards towards the neighbouring hills. The light drew nearer; the sentry challenged. It was the relief. Their heads in the embrasure of the window, Herrera and the gipsy could hear every word that passed. The man going off sentry gave over his instructions to his successor. They were few and short. The principal was, to fire upon any one of the prisoners who should so much as show himself at a window.
By the light of the lantern which the corporal carried, Paco, who was still peering over the edge of the roof, distinguished the features of the new sentry. They were those of Perrico the Christino deserter. The relief marched away, the sentinel shouldered his musket, and walked slowly up to the further end of his post.
"Now then," said the gipsy to Herrera, "fix the rope round your waist. We will let him pass once more, and when he again turns his back, I will lower you. I shall be on the ground nearly as quickly as yourself, and then keep close to me. Take this, it may be useful."
And he handed him a formidable clasp-knife, of which the curved and sharp-pointed blade was fitted into a strong horn handle. With some repugnance, but aware of the possible necessity he might find for it, Herrera took the weapon. The rope was round his waist, and, with his hands upon the embrasure of the window, he only waited to spring out for a signal from the gipsy, who was watching, as well as the obscurity would permit, the movements of the soldier. The night was growing lighter, the wind had risen and swept away the mist from the fields, overhead the clouds had broken, and stars were visible, sparkling in their setting of dark blue enamel.
"Now!" said the gipsy, who held the slack of the rope gathered up in his hands. "No, stop!" cried he, in a sharp whisper, checking Herrera, who was about to jump out, and drawing hastily back. "Hell and the devil! What is he about?"
The window of the room was nearly at the extremity of the sentinel's post, so that, during one period of his walk, the soldier's back, owing to the slow pace at which he marched up and down, was turned for a full minute. It was upon this brief space of time that the gipsy had calculated for accomplishing his own descent and that of his companion. He had allowed the soldier to proceed twice along the whole length of his post, meaning to avail himself of the third turn he should take. But to his surprise and perplexity, when the man passed for the third time, he left his usual track, moved some twenty paces backwards from the house, and gazed up at Herrera's window. Apparently he could distinguish nothing; for, after remaining a few moments stationary, he again approached the wall of the house, looked cautiously around him, and, giving three low distinct coughs, continued his walk. Without pausing to consider the meaning of this strange proceeding, the esquilador caught Herrera's arm.
"Out with you," said he, "and quickly!"
Herrera darted through the window, hung on for one instant by the edge, and let himself go—the gipsy, with a degree of strength that could hardly have been anticipated in one so slightly built, holding the rope firmly, and lowering him steadily and rapidly. The moment that his feet touched the ground, the gipsy sprang out of the window, and, grasping the rope, began descending by the aid of his hands and feet, with the agility of a monkey or a sailor boy. Before he was half-way down, however, the sentinel, who had reached the end of his walk, began retracing his steps. Hererra's heart beat quick. Hastily cutting the noose from round his waist, he pressed himself against the wall and stood motionless, scarcely venturing to breathe. The sentinel approached. Dark though it was, it seemed impossible that he did not already perceive what was passing. Gliding along close to the wall, Herrera prepared to spring upon him at the first sound uttered, or dangerous movement made by him. The soldier drew nearer, paused, let the but of his musket fall gently to the ground, and clasped his hands over the muzzle. Herrera made a bound forward, and clutching his throat, placed the point of his knife against his breast.
"One word," said he, "and I strike!"