Queen Mary's rooms are in the third story, as seen in the engraving. The principal room is in the square part of the wing, between the two round towers. This was the bedroom. In the right hand tower, as seen in the engraving, is a small room, as large as the tower can contain, which was used by Mary as an oratory; that is, a little chapel for her private devotions. In the left hand tower was another small room, similar to the oratory, which Mary used as a private sitting room or boudoir. It is just large enough for a window and a fireplace, and for a very few persons to sit. It was in this little room that Mary was having supper, with two or three of her friends, when Darnley and his gang came up to murder Rizzio, who was one among them. Besides Mary's bedroom, which was in the front part of the wing, between the two towers, there was another large room behind it, which also belonged to her. Darnley's apartments were very similar to the queen's, only they were in the story below. It was the custom in those days, as it is now, indeed, in high life, for the husband and wife to have separate ranges of apartments, with a private passage connecting them. In this case the private passage leading from Darnley's apartments to Mary's was in the wall. It was a narrow stairway, leading up to Mary's bedroom, and the door where it came out was very near to the door leading to the little room in the tower where Mary and her friends were taking supper on the night of Rizzio's murder. When Mr. George and the boys reached the top of the stairs, they entered a large room, which, they were told by an attendant who was there to receive them, was Mary's audience chamber. This was the room situated back of the bedroom. The room itself, and every thing which it contained, wore a very antique and venerable appearance. The furniture was dilapidated, and the coverings of it were worn and moth-eaten. Very ancient-looking pictures were hanging on the walls. There was a large fireplace, with an immense movable iron grate in it. The grate was almost entirely worn out. The attendant who showed these rooms said that it was the oldest grate in Scotland. Still, it was not so old as the time of Mary, for it was brought into Scotland, the attendant said, by Charles II., who was Mary's great grandson. There was a window in a very deep recess in this room. It looked out upon a green park, on the side of the palace. A very ancient-looking table stood in this recess, which, the attendant said, was brought by Mary from France. The ceiling was carved and ornamented in a very curious manner. [Illustration: QUEEN MARY'S BEDROOM.] "And which is the door," said Waldron to the attendant, "where Darnley and his men came in, to murder Rizzio?" "That is in the next room," said the attendant. So saying, he pointed to a door, and Mr. George and the boys, and also two or three other visitors whom they had found in the room when they came in, went forward and entered the room.