A DARK COMMISSION.

These amateur nurses who had gathered about the Earl differed very much, as may be supposed, in their individual capacities. As for Mrs. Hart, she was very quickly put out of the way. The stroke which had prostrated her, at the outset, did not seem to be one from which she could very readily recover. The only thing which she did was to totter to the room early in the morning, so as to find out how the Earl was, and then to totter hack again until the next morning. Mrs. Hart thus was incapable; and Zillah was not very much better. Since her conversation with Hilda there were thoughts in her mind so new, so different from any which she had ever had before, and so frightful in their import, that they changed all her nature. She became melancholy, self-absorbed, and preoccupied. Silent and distrait, she wandered about the Earl's room aimlessly, and did not seem able to give to him that close and undivided attention which he needed. Hilda found it necessary to reproach her several times in her usual affectionate way; and Zillah tried, after each reproach, to rouse herself from her melancholy, so as to do better the next time. Yet, the next time she did just as badly; and, on the whole, acquitted herself but poorly of her responsible task.

And thus it happened that Hilda was obliged to assume the supreme responsibility. The others had grown more than ever useless, and she, accordingly, grew more than ever necessary. To this task she devoted herself with that assiduity and patience for which she was distinguished. The constant loss of sleep, and the incessant and weary vigils which she was forced to maintain, seemed to have but little effect upon her elastic and energetic nature. Zillah, in spite of her preoccupation, could not help seeing that Hilda was doing nearly all the work, and remonstrated with her accordingly. But to her earnest remonstrances Hilda turned a deaf ear.

"You see, dear." said she, "there is no one but me. Mrs. Hart was herself in need of a nurse, and you are no better than a baby, so how can I help watching poor dear Lord Chetwynde?"

"But you will wear yourself out," persisted Zillah.

"Oh, we will wait till I begin to show signs of weariness," said Hilda, in a sprightly tone. "At present, I feel able to spend a great many days and nights here."

Indeed, to all her remonstrances Hilda was quite inaccessible, and it remained for Zillah to see her friend spend most of her time in that sick-room, the ruling spirit, while she was comparatively useless. She could only feel gratitude for so much kindness, and express that gratitude whenever any occasion arose. While Hilda was regardless of Zillah's remonstrances, she was equally so of the doctor's warnings. That functionary did not wish to see his best nurse wear herself out, and warned her frequently, but with no effect whatever. Hilda's self-sacrificing zeal was irrepressible and invincible.

While Hilda was thus devoting herself to the Earl with such tireless patience, and exciting the wonder and gratitude of all in that little household by her admirable self-devotion, there was another who watched the progress of events with perfect calmness, yet with deep anxiety. Gualtier was not able now to give his music lessons, yet, although he no longer could gain admission to the inmates of Castle Chetwynde, his anxiety about the Earl was a sufficient excuse for calling every day to inquire about his health. On those inquiries he not only heard about the Earl, but also about all the others, and more particularly about Hilda. He cultivated an acquaintance with the doctor, who, though generally disposed to stand on his dignity toward musicians, seemed to think that Gualtier had gained from the Earl's patronage a higher title to be noticed than any which his art could give. Besides, the good doctor knew that Gualtier was constantly at the Castle, and naturally wished to avail himself of so good an opportunity of finding out all about the internal life of this noble but secluded family. Gualtier humored him to the fullest extent, and with a great appearance of frankness told him as much as he thought proper, and no more; in return for which confidence he received the fullest information as to the present condition of the household. What surprised Gualtier most was Hilda's devotion. He had not anticipated it. It was real, yet what could be her motive? In his own language--What game was the little thing up to? This was the question which he incessantly asked himself, without being able to answer it. His respect for her genius was too great to allow him for one moment to suppose that it was possible for her to act without some deep motive. Her immolation of self, her assiduity, her tenderness, her skill, all seemed to this man so many elements in the game which she was playing. And for all these things he only admired her the more fervently. That she would succeed he never for a moment doubted; though what it was that she might be aiming at, and what it was that her success might involve, were inscrutable mysteries.

What game is the little thing up to? he asked himself, affectionately, and with tender emphasis. What game? And this became the one idea of his mind. Little else were his thoughts engaged in, except an attempt to fathom the depths of Hilda's design. But he was baffled. What that design involved could hardly have been discovered by him. Often and often he wished that he could look into that sick-chamber to see what the "little thing was up to." Yet, could he have looked into that chamber, he would have seen nothing that could have enlightened him. He would have seen a slender, graceful form, moving lightly about the room, now stooping over the form of the sick man to adjust or to smooth his pillow, now watchfully and warily administering the medicine which stood near the bed. Hilda was not one who would leave any thing to be discovered, even by those who might choose to lurk in ambush and spy at her through a keyhole.

But though Hilda's plans were for some time impenetrable, there came at last an opportunity when he was furnished with light sufficient to reveal them--a lurid light which made known to him possibilities in her which he had certainly not suspected before.