Unc' Billy's eyes twinkled as he watched Farmer Brown's boy, for Unc' Billy knew that those traps were being set for him, and now that he knew just where each one was, of course he wasn't a bit afraid. It seemed to Unc' Billy that it was just the greatest kind of a joke to be watching Farmer Brown's boy set those traps, while all the time Farmer Brown's boy thought he was hiding them so cleverly that the only way they would be found would be by some one stepping into one and getting caught. "There," said Farmer Brown's boy, as he set the last trap, "I'd like to see anything get into this hen-house now without getting caught!" Unc' Billy almost chuckled aloud. Yes, Sir, he almost chuckled aloud. It was such a funny idea that Farmer Brown's boy should have taken all the trouble to set those traps to catch Unc' Billy trying to get into the hen-house, when all the time he was already in there. Unc' Billy laughed under his breath as Farmer Brown's boy closed the door of the hen-house and went off whistling. "Ho, ho, ho! Ha, ha, ha! Hee, hee!" Unc' Billy broke off short, right in the very middle of his laugh. He had just thought of something, and it wasn't funny at all. With all those traps set at every opening to the hen-house, no one could get in without getting caught, and of course no one who was in could get out without getting caught! The joke wasn't on Farmer Brown's boy, after all; it was on Unc' Billy Possum. But Unc' Billy couldn't see that it was any joke at all. Unc' Billy was a prisoner, a prisoner in Farmer Brown's hen-house, and he didn't know how ever he was going to get out of there. "It's a long way home," said Unc' Billy mournfully, as he peeped out of a crack toward the Green Forest. XIX WHAT THE SNOW DID Unc' Billy Possum did a lot of thinking. He was a prisoner, just as much a prisoner as if he were in a cage. Now Unc' Billy Possum wouldn't have minded being a prisoner in the hen-house but for two things; he was dreadfully afraid that his old friend and partner, Jimmy Skunk, would get hungry for eggs and would get caught in the traps, and he was still more afraid that Farmer Brown's boy would think to put his hand down under the hay in the last nest of the top row in the darkest corner. So Unc' Billy spent most of his time studying and thinking of some way to get out, and if he couldn't do that, of some way to warn Jimmy Skunk to keep away from Farmer Brown's hen-house.