Gradually Mrs. Sylvestre herself had found a slight change taking place in her manner toward Arbuthnot. She became conscious of liking him better, and of giving him more mental attention, as she saw him more familiarly. The idea dawned by slow degrees upon her that the triviality of which she accused him was of an unusual order; that it was accompanied by qualities and peculiarities which did not seem to belong to it. She had discovered that he could deny himself pleasures he desired; that he was secretly thoughtful for others; that he was—also secretly—determined, and that he had his serious moments, however persistently he endeavored to conceal them. Perhaps the professor had given her more information concerning him than she could have gained by observation in any comparatively short space of time. "This frivolous fellow," he said to her one night, laying an affectionate hand on Arbuthnot's arm, as they were on the point of leaving the house together, after having spent the evening there,—"this frivolous fellow is the friend of my old age. I wonder why."

"So do I," said Arbuthnot. "I assure you that you could not find a reason, professor."

"There is a kind of reason," returned the professor, "though it is scarcely worthy of the name. This frivolous fellow is not such a trifler as he seems, and it interests me to see his seriousness continually getting the better of him when he fancies he has got it under and trodden it under his feet."

Arbuthnot laughed again,—the full, careless laugh which was so excellent an answer to everything.

"He maligns me, this dissector of the emotions," he said. "He desires artfully to give you the impression that I am not serious by nature. I am, in fact, seriousness itself. It is the wicked world which gets the better of me."

Which statement Mrs. Sylvestre might have chosen to place some reliance in as being a plausible one, if she had not seen the professor at other times, when he spoke of this friendship of his. It was certainly a warm one, and then, feeling that there must be reason for it, she began to see these reasons for herself, and appreciate something of their significance and value.

The change which finally revealed itself in her manner was so subtle in its character that Arbuthnot himself could not be sure when he had first felt it; sometimes he fancied it had been at one time, and again at another, and even now it was not easy for him to explain to himself why he knew that they were better friends.

But there was an incident in their acquaintance which he always remembered as a landmark.

This incident occurred at the close of the season. One bright moonlight night, having a fancy for making a call upon Bertha, who was not well enough to go out for several days, Mrs. Sylvestre made the visit on foot, accompanied by her maid. The night was so pleasant that they were walking rather slowly under the trees near Lafayette Park, when their attention was attracted by the sound of suppressed sobbing, which came from one of two figures standing in the shadow, near the railings, a few yards ahead of them. The figures were those of a man and a young woman, and the instant she saw the man, who was well dressed, Agnes Sylvestre felt her heart leap in her side, for she recognized Laurence Arbuthnot. He stood quite near the woman, and seemed trying to console or control her, while she—less a woman than a girl, and revealing in her childish face and figure all that is most pathetic in youth and helplessness—wept and wrung her hands.