"Boys! Jack, Tom, Arnold," he cried excitedly. "What do you think of this? Here's some more of this mystery for us."

"What do you mean, mystery?" queried Tom, scoffingly.

"Just listen to this! Here's a newspaper clipping evidently from a Chicago paper which tells about our fitting out the Fortuna for the cruise to the Gulf of Mexico and also hazards the guess that we are young and adventurous spirits evidently seeking the buried treasure on the Gulf Coast."

"Does it say that we are after the Spanish Treasure Chest at the old Fort on Biloxi Bay, that must be dug up in the full of the moon on a rising tide with not a word said?" asked Tom.

"It does say that our destination is Biloxi and that we are known to be daring lads," replied Harry. "But that is not all."

"Let's have it, Harry," cried Jack. "I'm anxious to hear all."

"There's a pencil notation across the paper that says: 'Get these fellows at any cost.' That's mighty encouraging."

"Say, fellows, this is getting uncomfortably tight! I don't like it a little bit," declared Tom. "Here we are peaceable Boy Scouts out for a little pleasure trip and all at once it begins to rain adventurous spirits from any old place and each of them is posted to make away with us and all seem to be protecting this old Spanish strong box. I wish they'd go away and let us pursue the even tenor of our way unmolested."

"So do I," Jack replied. "But they seem to feel otherwise and so we'll have to take them as they come. We'll remember our motto and 'be prepared' to accept whatever they may have to offer."

"Is this fellow going to open the drip cock on our spare gasoline tank?" asked Arnold. "If he is, I'm going down to mount guard over him right now! Once is enough and too much is plenty."