Felipa stood leaning listlessly against the post of the ramada, watching them. After a time she went into the adobe and came out with a pair of field-glasses, following the course of the command as it wound along among the foot-hills. The day dragged dully along. She was uneasy about her husband, her nerves were shaken with the coffee and quinine, and she was filled, moreover, with a vague restlessness. She would have sent for her horse and gone out even in the clouds of dust and the wind like a hot oven, but Landor had forbidden her to leave the post. Death in the tip of a poisoned arrow, at the point of a yucca lance, or from a more merciful bullet of lead, might lurk behind any mesquite bush or gray rock. She set about cleaning the little revolver, self-cocking, with the thumb-piece of the hammer filed away, that her husband had given her before they were married. To-night she wanted no dinner. She was given to eating irregularly; a good deal at a time, and again nothing for a long stretch. That, too, was in the blood. So she sent the soldier cook away, and he went over to the deserted barracks. Then she tried to read, but the whisper of savagery was in the loneliness and the night. She sat with the book open in her lap, staring into a shadowy corner where there leaned an Indian lance, surmounted by a war bonnet. Presently she stood up, and stretched her limbs slowly, as a beast of prey does when it shakes off the lethargy of the day and wakens for the darkness. Then she went out to the back of the tents. The stars were bright chips of fire in a sky of polished blue. The wind of the day had died at dusk, and the silence was deep, but up among the bare graves the coyotes were barking weirdly. As she looked off across the low hills, there was a quick, hissing rattle at her feet. She moved hastily, but without a start, and glanced down at a rattler not three feet away. Landor's sabre stood just within the sitting room, and she went for it and held the glittering blade in front of the snake. Its fangs struck out viciously again and again, and a long fine stream of venom trickled along the steel. Then she raised the sabre and brought it down in one unerring sweep, severing the head from the body. In the morning she would cut off the rattle and add it to the string of close upon fifty that hung over her mirror. But now the night was calling to her, the wild blood was pricking in her veins. Running the sabre into the ground, she cleaned off the venom, and went back to the adobe to put it in its scabbard.