"Nothing, father," Sally answered, briefly and respectfully.

"Well, what the—" Professor Ladue was at a loss for words in which to express his exasperation. This was an unusual condition for him to be in. "Well, why don't you get down?"

"I don't want to get down," Sally returned. "I like being up here."

"You'll break your neck."

Sally made no reply.

"Can you get down safely?"

"Yes, father."

"Get down, then," said Professor Ladue, less sharply than he had meant to speak. "Don't you know that it must annoy me very much to have you spying in upon me in that way?"

"No, father, I didn't know it annoyed you," replied Sally in a colorless voice. "I beg your pardon. But I wasn't spying on you. I was only enjoying myself. I won't do it again."

Sally began slipping and sliding and scrambling down the tree. She seemed to have no fear and to be very familiar with the road she was taking. She knew every foothold. Her father watched her as she went from one insecure hold to another. It must have appeared to him a perilous descent, one would suppose; but I do not know what he thought. At all events, he called to her when she had swung off the lowest branch and dropped safely. He still had in his hand that prehistoric bone.