Hayden wasted no time, the next morning, in putting an advertisement in the "Lost and Found" columns of the various newspapers, signing his full name and address. Two lagging days passed, and then, just as hope was beginning to fade, he received a letter written in the third person, stating with what seemed to him rather cruel succinctness, that if Mr. Robert Hayden could find it convenient to be at the restaurant of the Gildersleeve Hotel that evening, the owner of the ornament described in his advertisement, namely a silver butterfly, would be there dining alone between the hours of eight and nine and would thus be able to receive her property in person.

With a vague feeling of disappointment through all his elation, Hayden turned the note over in his hand. At the head of the page was embossed a silver butterfly, but beyond this clue there was nothing to indicate the lady's identity; no name, no address. Again he read the brief words written in a clear, upright hand, which so plainly showed strength of character and unusual self-control, but gained no new light.

What an odd happening! He felt indefinably chilled. Why this appointment for a meeting at one of the large hotels? Curious. Why this mystery, anyway, he thought irritably; why this excess of mystery? And yet, after all, he was forced to confess to his inmost soul that, mystery though it was, he did not find it any the less delightful for that, rather the more so.

He had never known so slow a day. The minutes lagged unaccountably, the hours crawled forward at the most snail-like pace, and his impatience at this was tempered to a satirical amusement by the fact that the entire world of his friends seemed banded together in a conspiracy to engage his society for that particular evening.

He had, as night drew on, a breathless and excited sense of eluding and escaping them, and dressed with the emotions of the criminal who realizes that the sleuths are hard upon his trail. It is unnecessary to say that he was early at the Gildersleeve, and managed to secure a table which commanded a view of the entire room. He had an hour and a half before eight o'clock, and he put as much of it in as possible in ordering a carefully chosen dinner, taking an incredible time over it, for, as the fever of his anticipation ran high, his manner became the more cool and leisurely, a temperamental trait of his.

He ate his soup as slowly as possible, and glanced about at the tables now rapidly filling up with all the laughing groups of men and women who would be going on to the theater and the opera a little later. The music was charmingly subdued; a whiff of fragrance from the flowers on his table reached him. He liked the atmosphere of this hotel, quiet, restful, and handsome after a restrained and sober fashion; and then, all at once, the surroundings, the groups at the tables, the waiters passing to and fro, the appealing music, the noise and hum of conversation lost life and motion and color, and became the mere tapestry against which she alone moved.

It was about half-after seven when the vigilant eye which Hayden had kept so persistently on the door was rewarded; but to his disappointment, she was not alone, but was accompanied by an elderly, gray-haired man. However, his spirit was somewhat restored by the fact that they took a table immediately within the line of his vision. She wore black to-night, gauzy and diaphanous black. A small black toque with some upstanding silver trimming rested on her hair, and the silver butterfly on her breast seemed to flutter its delicate, shining wings; but depending from it almost to her waist and encircling her neck, was an exquisite chain of small, enameled butterflies. They were in all shades of yellow and orange, with touches of black, and were held together by tiny, jeweled links. Butterflies, more butterflies! Could it be? Was it a possibility? Hayden cautioned himself lest his imagination ran away with him.

He could not fail to notice that here, as at the opera, she was again an object of interest. Every one in the room seemed to be either openly or furtively gazing at her. In this, he reflected, there was nothing very peculiar, as her beauty, which was sufficiently marked to compel interest anywhere, was not more noticeable than the unique and remarkably beautiful ornaments she was wearing.

The man with her, unobtrusive and gray enough in all conscience to escape any attention whatever, yet made a peculiar impression on Hayden. As he sat, apparently ordering dinner in haste, with his watch in his hand, so to speak, Hayden was struck by the deference he displayed to the lady he accompanied, and the lack of ease in his manner. He was like a man who had been unwittingly drawn into a situation which rendered him extremely uncomfortable, and he was distinctly not of her world. On the other hand, the lady of the silver butterfly, as Hayden was forced to call her, in lieu of any other name, exhibited her usual calm, unruffled composure.

Hayden could not notice, watch her as closely as he would, that she showed even curiosity as to whether or not he was in the room. Not once did he succeed in surprising the smallest glance in his direction. Instead, for the most part, she talked earnestly to the man opposite, who had evidently ordered his dinner of dishes ready to be served, and was hastily consuming them, while she had given more time to her order, and did not really begin her dinner until her vis-a-vis had disposed of his. Then, with a final and hasty glance at his watch, the gray and elderly man arose, bowed awkwardly and formally to her and left the room.

The first course of the lady's dinner had just been placed before her, and Hayden could not fail to admire the way in which she bore herself. Although, as at the opera, she must have been conscious of the many admiring eyes cast in her direction, she gave no evidence of it, and he was almost equally piqued by the fact that she manifested no apparent interest in his presence. Not once did she turn her head toward the door, not once did she incline her eyes in his direction.

She had just finished her soup when, the clock indicating one minute of eight, Hayden took a last sip of his black coffee, the last whiff of his cigarette, and walked down the room toward her. As he reached her table and stood before her, she looked up with a charming smile, which yet held a touch of shyness, an embarrassment she struggled to conceal, and nodded toward the chair so recently vacated by her elderly companion. To his surprise, Hayden saw that she was younger than he had at first thought her, and wondered afresh at her apparent isolation.

"Won't you sit there, please? You are very prompt. It is just eight o'clock."

He seated himself opposite her. "A proof of my desire to escape the responsibility of your ornament," he replied, taking from his pocket the box enclosing the silver butterfly and holding it out toward her.

"Oh, thank you." She laid it on the table beside her without opening it. "It is extremely good of you to forgo any engagement you may have had merely to return this to me with your own hands." But although her words showed composure, her voice, the color that came and went, exhibited an agitation she could not wholly overcome.

"Good! Not at all," he returned. "There may have been several reasons which would make me wish to deliver the buckle to you in person--its beauty and value for one thing; but to be perfectly frank, let me confess that there was one overmastering reason, that my interest in this matter has been enormously increased by one of the most potent of factors; a factor that might be called the greatest stimulant in the world to even a tepid interest."

She looked up at him with surprise, even, he fancied, a slight alarm. "What can you possibly mean?" she asked coldly.

He had leaned his arms upon the table, and now he smiled up at her like a mischievous, cheeky school-boy. Even the most prejudiced person could but acknowledge that Hayden had a most delightful smile.

"Mystery," he replied.

Her eyelashes lay on her cheek, long, black eyelashes on a cheek of cream, with the faintest, the very faintest stain of carnation. She was drawing designs on the tablecloth with her fork. She started slightly, but if she felt any perturbation of spirit, she gave no sign further of it, and yet Hayden knew intuitively that he had said just the thing he should have been most careful to avoid.

"Ah, yes," she said at last slowly. "I dare say it does look like that. I did not think of it in that way. I'm afraid I was thinking only of expediency."

"And expediency to you apparently spells mystery to me," he said.

She made an impatient gesture. It struck him now that she was really annoyed. "I can not help it if you see it that way." She strove to make her voice icy.

"Wouldn't any one?" he persisted.

"Perhaps." She appeared to waver.

"You must admit," he continued, perversely pursuing the subject, "that you are rather mysterious yourself. Why, you appeared so suddenly and noiselessly beside me at the opera the other night--"

"My mother was to meet me there," she interrupted him, "but she disappointed me."

"And then as suddenly and noiselessly you disappeared, that truly, if I had not found the buckle of your shoe, I should never afterward have been successful in assuring myself that you had really been there."

She looked at him now with a sparkle of amusement in her eyes, and he experienced a quick sense of delight that violet eyes could be merry.

"Perhaps I was not really there at all," she laughed. It was evident that she had thrown aside the distrust and distress of a few moments before. "Listen"--leaning forward and speaking with more animation and assurance than she had yet shown--"I will construct a romance for you, a romance of mystery, since you seem determined to have mystery. Can you not fancy a woman, young, eager, interested in all sorts of things, and shut off from them all, living somewhere in the depths of the woods and consumed with longing for the intense and changing life of the city, whose varied phases only seem the more vivid and interesting when heightened by distance; and she dreams of this--this lonely girl--until her longing becomes so great and so vast and overmastering that her thought goes slipping away--away from the gloomy woods to enjoy stolen, brief, bright glimpses of the world? Is that beyond your imagination?"

"It is not at all beyond my imagination," he said modestly, "but if you are trying to impress upon me the fact that you are no more real than my fancy has once or twice suggested, it brings up a nice moral question. Am I justified in handing over to a chilly ghost a valuable and beautiful ornament belonging to some one else?"

She laughed outright, frankly amused. "That is a question you will have to decide for yourself," she said demurely. "You can't expect me to help you."

"Very well," he replied with equal promptitude. "I refuse any further responsibility and leave it entirely to your conscience."

"Are you--do you live in New York?" The carnation deepened slightly in her cheek at this personal question.

"I was born here," he replied. "I've lived here all my life that I haven't been away from it." They both burst out laughing at this proof of his ancestry.

"Let's talk on the two most interesting subjects in the world," he said, leaning forward as if struck by a sudden inspiration, "yourself and myself. I will begin at the beginning and tell you everything I know or have ever heard about myself and then you do the same."

"But no one ever knows when to stop when he or she begins to talk about himself or herself," she objected, and again the shyness crept into her voice. "You would occupy a thousand and one nights in the recital, and you have only"--she glanced at a tiny watch--"you have only ten minutes."

"Must Cinderella leave the ball exactly on the stroke of nine?"

"Certainly. Her pumpkin coach awaits her at that hour, and you know what happens to the pumpkin coach and the coachman and footmen if she keeps them waiting a minute overtime."

He sighed. "Well, I see that I must be dreadfully brief in what I have to say; and this is it. I have asked no reward for returning you your trinket, have I? But that does not absolve you from the courtesy of offering one; now, it seems to me that it is not at all amiss, in fact it is quite fitting, that I should dictate the terms of it. I am sure that this attitude of mine appeals, if not to your generosity, to your sense of justice," He paused politely.

"I can at least see the position I put myself in if I decline to admit it," she parried.

"Oh, I am sure of your position," he assured her. "I take that for granted. No one with a spark of kindly feeling could look at this matter except in one way. Now, you must admit that I have behaved beautifully. I have made no attempt to surprise your reticence, or even to discover your name. Truly, I haven't made the faintest effort to entrap you into any revelations, have I? Now, I am sure that we must know quantities of the same people, and all I ask is that you mention some of your engagements to me for the coming fortnight. Suppose, for instance, you were to say: 'I am going to be at the Goddards to-morrow afternoon about five. Wednesday, I am to dine at the Symmeses. Thursday, at the Hamptons.'"

Did she give a little start, or was it his fancy? At any rate she followed him with unmistakable interest, and when he had finished she leaned back in her chair with a ripple of low laughter.

"I do not believe we will begin that," she said. "It's like a game and we could go on indefinitely mentioning names on the strength of finding a mutual acquaintance. No, I am something of a fatalist. I think I will let events take their course. If we are to meet again, why, we are. If not, why, all our poor efforts can not compass it. Ah, it is nine o'clock, on the very stroke! Good night." She smiled graciously, charmingly. "And thank you again for so kindly restoring my property."

It was a very distinct dismissal. Hayden rose at once. "But," he protested before he took a step to depart, "you can not leave me this way. The only way I can think of you is as 'The Lady with the Butterflies,' and it is too cumbersome a title. It sounds like the name of a picture. It is such a catalogue-y title."

"It is really," she agreed with him. "There is no doubt about it. I am sorry," demurely, black lashes again on cheeks of cream, no, carnation. She did not mention her name and Hayden's face fell.

"I wonder if you know my cousin, Kitty Hampton," he said at a venture.

"My pumpkin coach!" she exclaimed, moving toward the door.

"But my reward!" he cried. "I refuse to let you go without bestowing it. It is not honest."

She sighed and she smiled, she flushed and wavered. "Then take this assurance," she said, as one driven to a corner. "Believe me when I tell you that when you wish to see me I shall not be hard to find. I have reason to think that you will find it very easy."