"You don't remember me, Doctor, do you? I helped you with Uncle Jed Burks at the signal tower that time when the lightning struck him."

He looked her over, his glance traveling from her frank, friendly face to her strong bare arms.

"Why, yes, I do. You and your brother had been to some fancy-dress affair. I remember your red shoes. It isn't every girl of your age that could have done what you did that night. Have you been vaccinated?"

"Twice. Both took."

"She's got no business being here, sir," Isaac broke in hotly. "I told her to keep out."

"Doctor! Listen at me!" pleaded Nance, her hand on his coat sleeve. Honest to goodness, I got to stay. Mrs. Snawdor don't believe it's smallpox. She'll slip the children in when you ain't looking and go out herself and see the neighbors. Don't you see that somebody's got to be here that understands?"

"The girl's right, Lavinski," said Dr. Adair. "She knows the ropes here, and can be of great service to us. The nurse downstairs can't begin to do it all. Now let us have a look at the patient."

Little Mr. Snawdor was hardly worth looking at. He lay rigid, like a dried twig, with his eyes shut tight, and his mouth shut tight, and his hands clenched tighter still. It really seemed as if this time Mr. Snawdor was going to make good his old-time threat to quit.

Dr. Adair gave the necessary instructions; then he turned to go. He had been watching Nance, as she moved about the room carrying out his orders, and at the door he laid a hand on her shoulder.

"How old are you, my girl?" he asked.