The moon slid back behind a cloud, the silver rays failed, and the figure of the man became more indistinct, almost a shadow, thin and impalpable. Then he bent far over in a stooping position, passed rapidly through a patch of scrub bushes, and came much nearer to the log prison. At the edge of the bushes he stopped again and watched the prison for at least a minute. Two soldiers were on watch in front of it before the single door, two soldiers in Spanish uniform, who were suffering from tedium, and who were quite sure, anyway that unarmed prisoners could not escape from a one-room building of logs with but a single door, secured by a huge, oak shutter, and two windows, each too small to admit the passage of a boy's or man's body. The two soldiers slouched in their walk, and presently, when their beats met before the door, they let the butts of their guns rest on the ground, and exchanged pleasant talk about pretty, dark girls that they had known in far-away Spain. One boldly lighted a cigarrito and the other encouraged by his example did likewise. Hark, what was that? "A lizard in the grass," said Carlos. "Yes, certainly," said Juan. They continued to smoke their cigarritos blissfully, and talk of the pretty, dark girls that they had known in far-away Spain. As they smoked and talked, and found smoke, talk and company pleasant, they did not see a shadow glide swiftly from the bushes and pass to the rear of the log prison that they were guarding so well. Nor could they see the shadow, since the building was now between them, resolve itself again into the figure of a man, who stood upright against the wall, his face at one of the little slits of windows. Their own talk was so pleasant, and the sound of their voices was such a cure for lonesomeness on a dark night, that they did not hear the man at the little slit of a window utter a faint warning hiss. Nor did they hear something a moment later fall with a slight metalic sound on the bark floor of the prison. The sound was repeated in an instant, but still they did not hear it, and then the figure of a man, melting back to a shadow, glided away from the house and into the bushes and thence to the forest, where it was lost. Carlos and Juan chatted until their cigarritos were smoked out. Then they shouldered their muskets and continued the watch that seemed to them so easy. How could unarmed men escape through such a thickness of logs? The shadow in the forest was lost to the sight of any possible Spaniard, but not to the sight of another shadow that arose from the bushes and flitted after it. The two shadows were now deep in the forest, but the second hung close on the first, making no noise, and sinking quickly to the ground, when the other looked back.