“Go ahead and get that fish!” said Rube, rubbing his stomach. “I feel like the Mammoth Cave!”

“Lock him up in a bakery, then, for I don’t think there’s any fish in the blooming river. If he’s hungry enough to chew buns, turn him loose on em!

It was Alex who gave this advice. For the next few minutes he busied himself making a closer examination of the boat.

“Look here,” he exclaimed, “who is there in this party that can read Greek? There’s a lot of queer writing on the rear end of the boat. I’d like to know what it means.”

All was excitement after this announcement, and Case and Buck climbed down into the rowboat.

The writing was in pencil, and was already half obliterated.

“Can you make anything of it?” asked Case, bending over the side of the boat.

“Not a thing,” was the reply. “I think it must be Hebrew! Anyway, it’s some sort of warning. Or it may be a threat.”

“Much you know about it!” laughed Case.

“What about that fish breakfast?” Rube called out from the motor boat. “I’m so hungry I could eat nails.”