Planchette himself slipped the piece of skin between the metal plates of the all-powerful press; and, brimful of the certainty of a scientific conviction, he worked the crank energetically.

“Lie flat, all of you; we are dead men!” thundered Spieghalter, as he himself fell prone on the floor.

A hideous shrieking sound rang through the workshops. The water in the machine had broken the chamber, and now spouted out in a jet of incalculable force; luckily it went in the direction of an old furnace, which was overthrown, enveloped and carried away by a waterspout.

“Ha!” remarked Planchette serenely, “the piece of skin is as safe and sound as my eye. There was a flaw in your reservoir somewhere, or a crevice in the large tube——”

“No, no; I know my reservoir. The devil is in your contrivance, sir; you can take it away,” and the German pounced upon a smith’s hammer, flung the skin down on an anvil, and, with all the strength that rage gives, dealt the talisman the most formidable blow that had ever resounded through his workshops.

“There is not so much as a mark on it!” said Planchette, stroking the perverse bit of skin.

The workmen hurried in. The foreman took the skin and buried it in the glowing coal of a forge, while, in a semi-circle round the fire, they all awaited the action of a huge pair of bellows. Raphael, Spieghalter, and Professor Planchette stood in the midst of the grimy expectant crowd. Raphael, looking round on faces dusted over with iron filings, white eyes, greasy blackened clothing, and hairy chests, could have fancied himself transported into the wild nocturnal world of German ballad poetry. After the skin had been in the fire for ten minutes, the foreman pulled it out with a pair of pincers.

“Hand it over to me,” said Raphael.

The foreman held it out by way of a joke. The Marquis readily handled it; it was cool and flexible between his fingers. An exclamation of alarm went up; the workmen fled in terror. Valentin was left alone with Planchette in the empty workshop.

“There is certainly something infernal in the thing!” cried Raphael, in desperation. “Is no human power able to give me one more day of existence?”