THREE:The night of their return to the post, Cairness, crossing the parade ground shortly before retreat, saw Felipa. He had been walking with his eyes on the earth, debating within himself the question of his future, whether he should re?nlist, succumb to the habit of the service, which is to ambition and endeavor what opium is to the system, or drop back into the yet more aimless life he had been leading five years before, when a fit of self-disgust had caused him to decide that he was good for nothing but a trooper, if even that. THREE:If the sentry outside heard, he paid no attention. It was common enough for the horses to take a simultaneous fit of restlessness in the night, startled by some bat flapping through the beams or by a rat scurrying in the grain. In ten minutes more a flame had reached the roof. In another ten minutes the sentry had discharged his carbine three times, fire call had been sounded in quick, alarming notes, and men and officers, half dressed, had come running from the barracks and the line.