At this the others laughed.

They were lounging around in the cabin at the time. A small blaze burned in the big fireplace at the bottom of the wide-throated chimney.

"What I want to know," remarked Owen, who had been examining one of the skins stretched on the thin board, "is why they fix these different ways. I've read that some skins are cured with the fur out and others with it in; some split and others dried whole."

"Glad you mentioned that," said Jim, looking pleased. "Skins are of all kinds. Some we dry cased, without cutting. I'm going to show you the whole business by degrees, if we're lucky enough—"

He stopped short in what he was saying, and seemed to cock his head on one side, as though listening.

"Say, I guess there must be some kind of bird or animal in your old chimney, Uncle Jim," remarked Steve.

"I thought I heard it, too," Owen declared.

All listened.

"There it goes again," said Steve; "and something dropped down right then. I was thinking of that story you told us where a bear came down through the big chimney of a cabin. Wow! Listen to that, would you?"

As Steve cried out in this way, the rattling in the chimney suddenly grew into an alarming noise. Then a large object fell with a crash into the fire.