Well, and what of it?  There was surely nothing very remarkable in so commonplace a fact; yet during the ensuing half-hour, during which he gave, or tried to give, the greater part of his attention to the political talk which followed the statements he had heard made in regard to the needs of a certain factory, his eye would turn riverward from time to time and always with a view to see if this woman had moved.  And not once did he detect the least change in her attitude.

“She will sit there all night,” he muttered to himself; and after a while his curiosity mounted to such a pitch that he got up and went out on the piazza for one of his short strolls.

XXII

HE REMEMBERS

Just an ordinary woman, lost in a dream of some kind while awaiting her departure on an out-going train!—­or such was Detective Gryce’s conclusion as he hobbled slowly past her.

Why should he give her a moment’s thought?  Yet he did.  He noticed her dress and the way she held her hands, and the fact, not suspected before, that she was not looking out at the landscape outspread before her eyes, but down into her lap at her own hands clasped together in an unnaturally tight grip.  Then he straightway forgot her in the thought of that other woman whose track he was following with such poor promise of success.  Madame Duclos’ image was in his mind as plainly as if she sat before him in place of this chance passenger.  He knew the sort of hat she would wear (or thought he did).  He also knew the color of her dress.  Had he not been shown the piece of goods from which it had been taken?  And had he not understood her choice, bizarre as it was, and for this very reason, that it was bizarre?  Being a woman of subtle mind, she would reason that since the police were seeking one of plain exterior and simple dress, a gaudy frock would throw them off their guard and insure her immunity from any close inspection.  Therefore this striped material rather than the plain black she so much preferred.  Then her eyes!  She would try to hide the defect which particularized them, by the use of glasses or, at least, by a very heavy veil.  While her walk—­well! she might successfully conceal her halting step if she were not hurried.  But he promised himself that he would be very careful to see that any woman rousing his suspicion should be given some reason for hurrying.

While thus musing, he had reached the farther end of the piazza.  In wheeling about to come back, the woman whose profile he now faced attracted his eye again, in spite of himself, and he gave her another idle thought.  How absorbing was the subject upon which she was brooding, and how deeply it affected her!

It struck him as he quietly repassed her that he had never seen a sadder face.  Then that impression passed from his mind, for he saw Perry coming toward him with a pencil and telegram-blank in hand.  He had decided to let Sweetwater know where he could be reached that night, and Perry had come for the message.