“Then we should know where to dig,” urged Mr. Tredgold.  “Properly managed there ought to be a fortune in your innocence, Chalk.”

Mr. Chalk eyed him fixedly.  “Seeing that the latitude and longitude and all the directions are written on the back,” he observed, with cold dignity, “I don’t see the force of your remarks.”

“Well, in that case, why not show it to Mr. Chalk, uncle?” said Prudence, charitably.

Captain Bowers began to show signs of annoyance.  “Well, my dear,” he began, slowly.

“Then Miss Drewitt could see it too,” said Mr. Tredgold, blandly.

Miss Drewitt reddened with indignation.  “I could see it any time I wished,” she said, sharply.

“Well, wish now,” entreated Mr. Tredgold.  “As a matter of fact, I’m dying with curiosity myself.  Bring it out and make it crackle, captain; it’s a bank-note for half a million.”

The captain shook his head and a slight frown marred his usually amiable features.  He got up and, turning his back on them, filled his pipe from a jar on the mantelpiece.

“You never will see it, Chalk,” said Edward Tredgold, in tones of much conviction.  “I’ll bet you two to one in golden sovereigns that you’ll sink into your honoured family vault with your justifiable curiosity still unsatisfied.  And I shouldn’t wonder if your perturbed spirit walks the captain’s bedroom afterwards.”

Miss Drewitt looked up and eyed the speaker with scornful comprehension.  “Take the bet, Mr. Chalk,” she said, slowly.

Mr. Chalk turned in hopeful amaze; then he leaned over and shook hands solemnly with Mr. Tredgold.  “I’ll take the bet,” he said.

“Uncle will show it to you to please me,” announced Prudence, in a clear voice.  “Won’t you, uncle?”

The captain turned and took the matches from the table.  “Certainly, my dear, if I can find it,” he said, in a hesitating fashion.  “But I’m afraid I’ve mislaid it.  I haven’t seen it since I unpacked.”

“Mislaid it!” ejaculated the startled Mr. Chalk.  “Good heavens!  Suppose somebody should find it?  What about your word to Don Silvio then?”

“I’ve got it somewhere,” said the captain, brusquely; “I’ll have a hunt for it.  All the same, I don’t know that it’s quite fair to interfere in a bet.”

Miss Drewitt waved the objection away, remarking that people who made bets must risk losing their money.

“I’ll begin to save up,” said Mr. Tredgold, with a lightness which was not lost upon Miss Drewitt.  “The captain has got to find it before you can see it, Chalk.”

Mr. Chalk, with a satisfied smile, said that when the captain promised a thing it was as good as done.

For the next few days he waited patiently, and, ransacking an old lumber-room, divided his time pretty equally between a volume of “Captain Cook’s Voyages” that he found there and “Famous Shipwrecks.”  By this means and the exercise of great self-control he ceased from troubling Dialstone Lane for a week.  Even then it was Edward Tredgold who took him there.  The latter was in high spirits, and in explanation informed the company, with a cheerful smile, that he had saved five and ninepence, and was forming habits which bade fair to make him a rich man in time.