degrees his thoughts ceased to dwell so persistently upon the unsolved puzzle, and other interests took possession of his mind. The tragedy of his aunt's death, his love for Kate, his studies, his prospects--a hundred things gave him occupation, until the silver rod was half forgotten. In the latter part of 1813, however, he accidentally made a rather remarkable discovery. V. He had for the first time been out hunting with his father and the neighboring country gentlemen in the autumn of this year, and it appears that on two occasions he had the brush awarded to him. At his request the heads of the two foxes were mounted for him, and he proposed to put them up on either side his fireplace. The wall, above and for a few inches to the right and left of the mantelpiece, was bare of tapestry; the first-named place being occupied by the portrait, while the sides were four feet up the oaken wainscot which surrounded the whole room behind the tapestry, and from thence to the ceiling, plaster. The mantelpiece and fireplace were of a dark slaty stone, and of brick, respectively. Archibald fixed upon what he considered the most effective positions for his heads--just above the level of the wainscot, and near enough to the mantelpiece not to be interfered with by the tapestry. He nailed up one of them on the left-hand side, the nails penetrating with just sufficient resistance in the firm plaster; and then, measuring carefully to the corresponding point on the right-hand side, he proceeded to affix the other head there. But the nail, on this occasion, could not be made to go in; and on his attempting to force it with a heavier stroke of the hammer, it bent beneath the blow, and the hammer came sharply into contact with the white surface of the wall, producing a clinking sound as from an impact on metal. A brief investigation now revealed the fact that a circular disk of iron, about three inches in diameter, and painted white to match the plaster, was here let into the wall. What could be the object of it? With a fresh nail the boy began to scratch off the paint from the surface of the disk, in order to determine whether it were actually iron, or some other metal; in so doing a small movable lid, like the screen of a keyhole, was pushed aside, disclosing a little round aperture underneath. Archibald pushed the nail into it, thereby informing himself that the hole went straight into the wall, for a distance greater than the length of the nail; but how much greater, and what was at the end of it, he could only conjecture.