At the time of this story relations between the United States and the established government of Mexico were at such high tension that a hostility had sprung up between the troops fronting each other along the Rio Grande, and in consequence their officers no longer crossed the boundary, even when off duty. It created a flurry of suppressed excitement, therefore, when Luis Longorio, the autocrat of the Potosista forces, boldly crossed the bridge, traversed the streets of Pueblo, and entered the Hamilton Hotel. From his seat in the lobby Law heard the general inquire for Mrs. Austin, and then saw him ascend in the direction of the parlor. What the devil could Longorio want with "The Lone Star" at such an hour? the Ranger asked himself. Why should he presume to call upon her unless--he was interested? Mexican officers, in these parlous times, were not given to social courtesies, and Longorio's reputation was sufficiently notorious to render his attentions a cause for gossip under any circumstances. Dave rose and strolled restlessly about the hotel. A half-hour passed and Longorio did not reappear; an hour dragged by, and then Dave took occasion to go to his room. A glance through the open parlor door showed the foreigner in closest conversation with Mrs. Austin. They were laughing; they were alone; even Dolores was nowhere to be seen. When Dave returned to his big rocking-chair he found it uncomfortable; he watched the clock anxiously; he chewed several cigars viciously before realizing that he was jealous--yes, madly, unreasonably jealous. So! His divinity was not as unapproachable as he had imagined. Doubtless Longorio was mad over her, which explained the fellow's willingness to help her exact reparation from his government. Fine doings for a respectable married woman! It was wrong, scandalous, detestable! After a time Dave rose impatiently. What had come over him, anyhow? He must be crazy to torture himself in this fashion. What went on up-stairs certainly was none of his business, and he had better far amuse himself. In accordance with this excellent reasoning, he went to a picture-show. But he could not become interested. The flat images on the screen failed to divert him, and the only faces he saw were those of Luis Longorio and the lone mistress of Las Palmas. Had Dave only known the truth, he would have gained a grim comfort from it, for Alaire Austin was not enjoying herself this evening. Her caller stayed on interminably and she became restive under the flow of his conversation. For some reason or other Longorio was not the romantic figure he had been; in his citizen's clothes he was only a dandified Mexican gallant like any number of others. The color was gone from the picture; this quixotic guerrilla hero, this elegant Ruy Blas, was nothing more than a tall, olive-skinned foreigner whose ardor was distasteful. Longorio was tiresome. XIV JOSE SANCHEZ SWEARS AN OATH