“You have saved us from homelessness in our old age, but what does this mystery of the money mean, you who lost all in the Albatross?”

Alan smiled mysteriously, while old Jack chuckled serenely.

“It’s quite a story,” said Captain Bertram.

“Tell it, Alan,” cried Will, curiously.

“We are no longer poor. This pocket-book contains ten times the amount of the mortgage, and it is all ours.”

The boys crowded around Alan.

“How did you come by the money, Alan?” asked Mrs. Bertram.

“It can be told in a single word.”

“What is that?” asked Will, excitedly.

“Ambergris.”