“No, I think not, even if the worst happened. As you know, I rescued Mary from the gutter, and from almost certain starvation, when she was a child; I think her life is mine, to use as I see fit. Come, it’s getting late; we had better go in.” Dr. Raymond led the way into the house, through the hall, and down a long dark passage. He took a key from his pocket and opened a heavy door, and motioned Clarke into his laboratory. It had once been a billiard-room, and was lighted by a glass dome in the centre of the ceiling, whence there still shone a sad grey light on the figure of the doctor as he lit a lamp with a heavy shade and placed it on a table in the middle of the room. Clarke looked about him. Scarcely a foot of wall remained bare; there were shelves all around laden with bottles and phials of all shapes and colours, and at one end stood a little Chippendale book-case. Raymond pointed to this. “You see that parchment Oswald Crollius? He was one of the first to show me the way, though I don’t think he ever found it himself. That is a strange saying of his: ‘In every grain of wheat there lies hidden the soul of a star.’” There was not much furniture in the laboratory. The table in the centre, a stone slab with a drain in one corner, the two armchairs on which Raymond and Clarke were sitting; that was all, except an odd-looking chair at the furthest end of the room. Clarke looked at it, and raised his eyebrows. “Yes, that is the chair,” said Raymond. “We may as well place it in position.” He got up and wheeled the chair to the light, and began raising and lowering it, letting down the seat, setting the back at various angles, and adjusting the foot-rest. It looked comfortable enough, and Clarke passed his hand over the soft green velvet, as the doctor manipulated the levers. “Now, Clarke, make yourself quite comfortable. I have a couple hours’ work before me; I was obliged to leave certain matters to the last.”