On arriving at Stockton this surveillance became less easy. It was the terminus of the stage-route, and the divergence of others by boat and rail. If he were lucky enough to discover which one the lady took, his presence now would be more marked, and might excite her suspicion. But here a circumstance, which he also believed to be providential, determined him. As the luggage was being removed from the top of the coach, he overheard the agent tell the expressman to check the "lady's" trunk to San Luis. Key was seized with an idea which seemed to solve the difficulty, although it involved a risk of losing the clue entirely. There were two routes to San Luis, one was by stage, and direct, though slower; the other by steamboat and rail, via San Francisco. If he took the boat, there was less danger of her discovering him, even if she chose the same conveyance; if she took the direct stage,--and he trusted to a woman's avoidance of the hurry of change and transshipment for that choice,--he would still arrive at San Luis, via San Francisco, an hour before her. He resolved to take the boat; a careful scrutiny from a stateroom window of the arriving passengers on the gangplank satisfied him that she had preferred the stage. There was still the chance that in losing sight of her she might escape him, but the risk seemed small. And a trifling circumstance had almost unconsciously influenced him--after his romantic and superstitious fashion--as to this final step. He had been singularly moved when he heard that San Luis was the lady's probable destination. It did not seem to bear any relation to the mountain wilderness and the wild life she had just quitted; it was apparently the most antipathic, incongruous, and inconsistent refuge she could have taken. It offered no opportunity for the disposal of booty, or for communication with the gang. It was less secure than a crowded town. An old Spanish mission and monastery college in a sleepy pastoral plain,--it had even retained its old-world flavor amidst American improvements and social revolution. He knew it well. From the quaint college cloisters, where the only reposeful years of his adventurous youth had been spent, to the long Alameda, or double avenues of ancient trees, which connected it with the convent of Santa Luisa, and some of his youthful "devotions,"--it had been the nursery of his romance. He was amused at what seemed to be the irony of fate, in now linking it with this folly of his maturer manhood; and yet he was uneasily conscious of being more seriously affected by it. And it was with a greater anxiety than this adventure had ever yet cost him that he at last arrived at the San Jose hotel, and from a balcony corner awaited the coming of the coach. His heart beat rapidly as it approached. She was there! But at her side, as she descended from the coach, was the mysterious horseman of the Sierra road. Key could not