"Gosh! You look like a murderer!" exclaimed Burt in dismay. "Uncle George, this is Critch. He ain't always in this shape though."

"Sorry I can't shake hands, Mr. Wallace!" said the red-haired boy. To his surprise the explorer laughed and stuck out his hand.

"Nonsense, lad! Shake!"

Critch dropped his knife, wiped his hand hastily on his apron and gripped that of the explorer heartily. "Frank Gates brought in those tame rabbits of his that died," he explained. "I told him it wasn't worth while stuffing them this weather, but he had the coin to pay for 'em and pretty near got sore about it, so I took on the job. I'm awful glad to meet you, sir! I've heard a heap about you, and Burt's lent me all your books."

"Go right ahead," insisted Mr. Wallace. "I'd like to see how you do it. Many's the skin I've had to put up in a hurry if I wanted it, but I'd sooner tramp a hundred miles than handle the beastly things!"

Critch picked up his knife and Mr. Wallace glanced around the little room. On the walls stood shelves of books and stuffed birds and animals. Bottles of liquids stood in the corners, and over the door was a stuffed horned owl mounted on a tree branch.

"That looks good!" commented the explorer approvingly. "That owl's a mighty good piece of work, boys!" He turned to Howard. "There you have him—nice and clean! You know how to handle a knife, I see. Ever hear how we tackle the big skins?"

"No," replied Critch with interest. "Tell us about it, Mr. Wallace, if you don't mind! I've read a little, but nothing definite."

"With soft-skinned animals like deer we usually do just what you're doing with those rabbits—simply make incisions, slit 'em from neck to tail and peel off the skins. By the way, what do you use for preservative?"

"Get it ready-mixed," replied Critch and pointed to the bottles. "It's odorless, takes the grease out o' the skin, and don't cost much. Guess I'll use arsenic on these, though. They need something pretty strong."