The doctor bowed.
He drove at once to the humble dwelling of Mrs. Burke.
His errand was briefly explained.
"Can you come?" he asked. "I am authorized to offer you ten dollars a week for the time you spend there."
"I would come in a minute, doctor, but what shall I do with Mary?"
"She shall stay at my house. I will gladly take charge of her."
"You are very kind, doctor. I wouldn't want to expose her, but I don't mind myself. I don't think I am in danger, for I've had the smallpoX — already."
"Can you be ready in five minutes? Tell Mary to pack up her things, and go to my house at once. We'll take good care of her."
In less than an hour Mrs. Burke was installed at the bedside of the sick man as his nurse. As she entered the house, Mrs. Preston left it, bound for the railway depot.
"I'm so glad you're here," she said, greeting the widow Burke with unwonted cordiality. "I am sure you will take the best care of my husband. I have told the doctor to pay you whatever you ask."