The partner did as well, or even a little better, for the watch credited him with ten and one-half minutes, whereupon he chaffed Ware hugely. Then the pack horse was led to a patiently earned feed, while the little group of rangers, with Thorne, his sister and Bob, moved slowly toward headquarters.

"That's all this morning, boys," he told the waiting group as they passed it. "This afternoon we'll double up a bit. The rest of you can all take a try at the packing, but at the same time we'll see who can cut down a tree quickest and best."

"Stop and eat lunch with us," Amy was urging Bob. "It's only a cold one—not even tea. I didn't want to miss the show. So it's no bother."

They all turned to and set the table under the open.

"This is great fun," said Bob gratefully, as they sat down. "Good as a field day. When do you expect to begin your examinations? That's what these fellows are here for, isn't it?"

He looked up to catch both Thorne and Amy looking on him with a comically hopeless air.

"You don't mean to say!" cried Bob, a light breaking in on him. "—of course! I never thought----"

"What do you suppose we would examine candidates for Forest Ranger in—higher mathematics?" demanded Amy.

"Now that's practical—that's got some sense!" cried Bob enthusiastically.

Thorne, with a whimsical smile, held up his finger for silence. Through the thin screen of azalea bushes that fringed this open-air dining room Bob saw two men approaching down the forest. They were evidently unaware of observation. With considerable circumspection they drew near and disappeared within the little tool house. Bob recognized the two lumberjacks from his own camp.