"Heavy wash to-day," was Jan's greeting as he deposited his heavy basket in the corridor. "Spot cash, down on the nail."

"Your knowledge of English is remarkable," said the Flight-Sub affably.

"It has to be," rejoined the Dutchman stolidly.

"We have only twenty pounds," declared the Sub. "That we will give you as soon as we are on board and in English waters. The balance Mr. Brown will give you on your return, on receipt of a note from us to the effect that we are safely home."

"It cannot be done," said Jan.

"Then the deal's off," remarked the Flight-Sub coolly; but he ostentatiously poured the coins from his right hand into his left before returning them to his pocket.

The Dutchman capitulated.

"Very good," he said. "I can trust an English Naval officer, although many a time have I been done in London. Get in, one of you."

"But the other?" enquired the Sub.

"I am strong, but I am not a Hercules," replied the Dutchman with a shrug of his shoulders. "One I can carry to the cart. To-day is a heavy wash, so I must return for a second load. You twig?"