Before setting to work Dias passed his torch over the stone. Presently he stopped. "Will you light two of the candles, seņor; the torch flickers too much to see very plainly."

Somewhat surprised, for no such close examination had been made before, the candles were lighted and handed to him. Dias knelt down, and, with his face close to the stone, moved about carefully, examining it for some minutes without speaking.

"This stone, seņor, is broken," he said at last, "broken into a dozen pieces, and they have been so carefully fitted together again that the dust that settled upon it quite prevented our seeing it till we swept it again just now, and it was only because there was a tiny chip out where I first looked that I noticed it."

Harry knelt down and also examined the stone. Like all the others, it had not been faced with tools. Consequently, although roughly even, there were slight irregularities in the surface. Now, as Dias pointed them out to him, he saw that there were lines running through it here and there.