As Leo looked with surprise and admiration at it, an elf came staggering up to the niche. After breathing the oxygen he turned to Knops with a heart-rending cry.

"I have lost it—lost it, Master Knops."

"Lost what, Paz?"

"The finest stone I ever made, and I have been years at it."

"How did that happen?"

"Burned it too long—look!" and he produced in his spidery hand a small mass of charcoal.

"Never mind, Paz; better luck next time," said Knops, kindly.

"No, I am no longer fit for the profession; such a mistake is inexcusable. I cannot hold up my head among the others. I meant that diamond for our King's tiara or the Queen's necklace—bah! Please, Master Professor, put me among the miners, or take me for your valet. I care not what I do."

"You are depressed just now; wait awhile."

"No, I must go. I have broken my crucible and put out my furnace. I will not stay to be scorned."