Hereupon, he devised experiments to discover whether Archibald was conscious that he was singing, or whether it was an act performed mechanically, while the mind was otherwise engaged. After the child was in bed, he quietly arranged a lamp so as to cast a circular space of light upon the ceiling above the bed, the rest of the room being left in shadow. Not a word of any song was heard that night; and the test was tried twice more during the week, with a like result. At another time he got the Honorable Richard to come into a room adjoining the nursery, and sing the song so that Archibald might hear it. Archibald heard it, but gave no sign of being affected thereby. He was then brought into Mr. Richard's presence; it was the first time they had met since the change. Now, if ever, was an opportunity for the imperishable quality of the affections to be vindicated. But no such vindication occurred. On the contrary, after having stared his uncle almost out of countenance for some minutes, he turned from him with a marked expression of disapproval, and could never afterward be induced voluntarily to go near him. The affection had become an antipathy. "No, madam; set your mind at rest," said the bluff Doctor to Lady Malmaison over a cup of tea that evening. "The child's no changeling; but he's changed, and changed for the better, too, by Gad! He can tell a bad egg from a good one now," continued the Doctor, with a significant chuckle, the significance of which, however, Lady Malmaison perhaps failed to perceive. But the fact was, the Honorable Richard Pennroyal had never been an especial favorite with Dr. Rollinson. The next day was a new excitement. Archibald had walked, and that, too, as well as the best-grown boy of seven that you would want to see. "Ay, and where did he walk to?" demanded the Doctor. It was explained that it was at the time for nursing him, and he was sitting in his little chair at one end of the nursery, when Maggie had entered at the other. As soon as he clapped eyes on her, he had set up his usual impatient outcries; but Maggie, instead of going directly to him, had stopped to exchange a few words with the head-nurse, unfastening the front of her dress the while, however, so that Master Archibald's impatience was carried to the point of intolerance by the glimpse thus afforded of the good things in store for him. And then, before you had time to think, he had got up from his chair, and trotted across the floor, bellowing all the time, and had tugged at Maggie's dress. "Bellowing all the time, eh?" said the Doctor. "And walking all the same like he was ten year old, sir: and it did give us all a turn; and if you please, sir, what do you say to _that_?" "What do I say to that?--why, that it's just what I should have expected--that's what I say!" replied Dr. Rollinson, who had apparently begun to divine some clew to the grand mystery. But he vouchsafed no explanations as yet.