“There are the tracks of where the beast came from the river,” said Jerry, pointing to the unmistakable path of some large animal. It had come up the river bank, straight to the bed Bob had so carefully made.

“Must have been a crocodile,” insisted Ned.

“There aren’t any in Florida,” said the professor. “The alligators are not found in this region, either. Whatever it was Bob, you baited it yourself.”

“How?”

“Why, when you pulled that grass you left a long trail of it from the river bank right to the tent. The creature simply followed it up, eating as it went, and when it struck your bunk I suppose it thought it had quite a feast. I guess the taking hold of your foot was only accidental.”

“Maybe it was a sort of walking fish,” suggested Jerry.

“I have an idea what it was,” the professor answered.

“A snake?” asked Bob, and he turned paler than before.

“No, not a snake. I’ll tell you in the morning. Better go to bed now. We’ll light several more lanterns and I think they will keep away any other creatures.”