Then the captain took up the dredger from beneath the table and held it up with a smile.

"Conjuring, Jem—magic! By this simple contrivance we get the dust of years in one moment. Put it in your pocket and light the lantern."

Jem stared in silence profound and amazed for a minute.

"But," he said, with a troubled face, "you ain't going into that beastly room, captain?"

"I am, and so are you," said the captain. "No words; remember your blow and your revenge. You work for it to-night while you obey me."

Jem caught up the lantern with desperate bravado and lit it.

Meanwhile the captain exchanged his coat for a pea-jacket, and drew a thick pair of stockings over his boots.

Jem, following his instructions, did likewise, and then waited for further orders.

"You could pick locks," said the captain, "one time, Jem; have you forgotten the art?"

Jem grinned.