But this other man, this man who was coming for an explanation, this Mr. Arnold Arbuthnot, was, if you please, a very different kind of pupil. In the first place he was a gentleman, a fact which he displayed, not ostentatiously, in every line of his letters; next, he had come to her for instruction—the only pupil she had in that science, in heraldry, which she loved. It is far more pleasant to be describing a shield and settling questions in the queer old language of this queer old science, than in solving and propounding problems in trigonometry and conic sections. And then—how if your pupil begins to talk round the subject and to wander into other things? You cannot very well talk round a branch of mathematics, but heraldry is a subject surrounded by fields, meadows, and lawns, so to speak, all covered with beautiful flowers. Into these the pupil wandered, and Iris not unwillingly followed. Thus the teaching of heraldry by correspondence became the most delightful interchange of letters imaginable, set off and enriched with a curious and strange piquancy, derived from the fact that one of them, supposed to be an elderly man, was a young girl, ignorant of the world except from books, and the advice given her by two old men, who formed all her society. Then, as was natural, what was at first a kind of play, became before long a serious and earnest confidence on the one side, and a hesitating reception on the other.

Latterly he more than once amused himself by drawing an imaginary portrait of her; it was a pleasing portrait, but it made her feel uneasy.

"I know you," he said, "from your letters, but yet I want to know you in person. I think you are a man advanced in years." Poor Iris! and she not yet twenty-one. "You sit in your study and read; you wear glasses, and your hair is gray; you have a kind heart and a cheerful voice; you are not rich—you have never tried to make yourself rich; you are therefore little versed in the ways of mankind; you take your ideas chiefly from books; the few friends you have chosen are true and loyal; you are full of sympathy, and quick to read the thoughts of those in whom you take an interest." A very fine character, but it made Iris's cheek to burn and her eyes to drop. To be sure she was not rich, nor did she know the world; so far her pupil was right, but yet she was not gray nor old. And, again, she was not, as he thought, a man.

Letter-writing is not extinct, as it is a commonplace to affirm, and as people would have us believe. Letters are written still—the most delightful letters—letters as copious, as charming, as any of the last century; but men and women no longer write their letters as carefully as they used to do in the old days, because they were then shown about, and very likely read aloud. Our letters, therefore, though their sentences are not so balanced nor their periods so rounded, are more real, more truthful, more spontaneous, and more delightful than the laborious productions of our ancestors, who had to weigh every phrase, and to think out their bon mots, epigrams, and smart things for weeks beforehand, so that the letter might appear full of impromptu wit. I should like, for instance, just for once, to rob the outward or the homeward mail, in order to read all the delightful letters which go every week backward and forward between the folk in India and the folk at home.

"I shall lose my letters," Iris recollected, and her heart sunk. Not only did her correspondent begin to draw these imaginary portraits of her, but he proceeded to urge upon her to come out of her concealment, and to grant him an interview. This she might have refused, in her desire to continue a correspondence which brightened her monotonous life. But there came another thing, and this decided her. He began to give, and to ask, opinions concerning love, marriage, and such topics—and then she perceived it could not possibly be discussed with him, even in domino and male disguise. "As for love," her pupil wrote, "I suppose it is a real and not a fancied necessity of life. A man, I mean, may go on a long time without it, but there will come a time—do not you think so?—when he is bound to feel the incompleteness of life without a woman to love. We ought to train our boys and girls from the very beginning to regard love and marriage as the only things really worth having, because without them there is no happiness. Give me your own experience. I am sure you must have been in love at some time or other in your life."

Anybody will understand that Iris could not possibly give her own experience in love-matters, nor could she plunge into speculative philosophy of this kind with her pupil. Obviously the thing must come to an end. Therefore she wrote a letter to him, telling him that "I.A." would meet him, if he pleased, that very evening at the hour of eight.

It is by this time sufficiently understood that Iris Aglen professed to teach—it is an unusual combination—mathematics and heraldry; she might also have taught equally well, had she chosen, sweetness of disposition, goodness of heart, the benefits conferred by pure and lofty thoughts on the expression of a girl's face, and the way to acquire all the other gracious, maidenly virtues; but either there is too limited a market for these branches of culture, or—which is perhaps the truer reason—there are so many English girls, not to speak of Americans, who are ready and competent to teach them, and do teach them to their brothers, and their lovers, and to each other, and to their younger sisters all day long.

As for her heraldry, it was natural that she should acquire that science, because her grandfather knew as much as any Pursuivant or King-at-Arms, and thought that by teaching the child a science which is nowadays cultivated by so few, he was going to make her fortune. Besides, ever mindful of the secret packet, he thought that an heiress ought to understand heraldry. It was, indeed, as you shall see, in this way that her fortune was made; but yet not quite in the way he proposed to make it. Nobody ever makes a fortune quite in the way at first intended for him.

As for her mathematics, it is no wonder that she was good in this science, because she was a pupil of Lala Roy.

This learned Bengalee condescended to acknowledge the study of mathematics as worthy even of the Indian intellect, and amused himself with them when he was not more usefully engaged in chess. He it was who, being a lodger in the house, taught Iris almost as soon as she could read how letters placed side by side may be made to signify and accomplish stupendous things, and how they may disguise the most graceful and beautiful curves, and how they may even open a way into boundless space, and there disclose marvels. This wondrous world did the philosopher open to the ready and quick-witted girl; nor did he ever lead her to believe that it was at all an unusual or an extraordinary thing for a girl to be so quick and apt for science as herself, nor did he tell her that if she went to Newnham or to Girton, extraordinary glories would await her, with the acclamations of the multitude in the Senate House and the praise of the Moderators. Iris, therefore, was not proud of her mathematics, which seemed part of her very nature. But of her heraldry she was, I fear, extremely proud—proud even to sinfulness. No doubt this was the reason why, through her heraldry, the humiliation of this evening fell upon her.