Blue Bonnet turned the horses and driving very slowly, so as not to hurt the boy's injured arm, went back over the road they had just traversed. It was not long before they came in sight of the tent she and Sarah had noticed; a rather high fence prevented her approaching it very closely, and she stopped just opposite the camp.

"I reckon you'll have to go and see if the man's there, Sarah," said Blue Bonnet.

Sarah looked fearfully at the high fence. "I just know I can't get over."

Blue Bonnet gave her a withering glance. "You—Woodfordite!" was the worst epithet she dared trust herself to before a stranger. "Then you'll have to hold the horses. There's no river to spill into here—and you don't have to pull them over backwards."

"There's no need, really," the young fellow interrupted. "I can bring Abbott if he's here." He raised his right hand, put the tips of two fingers to his lips and blew. The shrillest, most penetrating whistle the girls had ever heard pierced the air, causing the colts to lunge forward in a way that might have precipitated another catastrophe, had not Blue Bonnet's little steel wrist brought them up sharply.

At the summons a tall lanky figure appeared from within the tent and stood peering under his hand at the occupants of the buckboard. The youth whistled again, this time only with his lips,—a bird-like call. "That's his frat whistle. Ought to bring him."

And bring him it did. The lanky figure deserted the tent and with an eager stride crossed the meadow and came up to the fence. After one scrutinizing glance at the girls his eye fell on the boy and he grinned broadly.

"Hullo, Knight!—is it really you? Glad to see you, old chap!"

"Hello, Doc. How am I going to get over this hospitable fence of yours?" returned the boy, with an abruptness born of an aching wrist. "My nag threw me and I've broken my left arm. Know anybody that can set it?" He winked impudently at the fledgling doctor.

The latter beamed with professional delight. "Just my line, dear boy. I wish it had been your leg, now,—I do those beautifully!"