This was exactly what the housekeeper had intended to do, for she presumed upon her long service in the family to write a few lines occasionally to the boy whom she had known from the age of six.

“Of course I shall be pleased to give him any message from you.”

“Thank you, Doctor Mack. Tell him if he catches cold I can send him some camomile. Camomile tea is excellent in such cases. My mother and grandmother used it all their lives.”

“You seem to forget that I am a doctor, Nancy. Not that I object to camomile tea—in its place—though I can truly say that I never hankered after it.”

“How long will you be gone, doctor?”

“I can't say exactly. You see, Euclid is nearly two hundred miles off. and I don't know whether I can make connections.”

“Oh, well, don't hurry! No doubt Walter will want to keep you with him as long as possible.”

“I don't feel so sure of that,” thought the doctor shrewdly. “Boys are not usually so fond of the society of their guardians, though I don't doubt Walter has a sincere regard for me. He is a warm-hearted boy.”

Doctor Mack was no longer in active practice. Three years before he had selected an assistant—a young Doctor Winthrop—in whom his patients had come to feel confidence, so that when he wanted to go away for a few days there was no serious objection. Unlike some elderly practitioners, Doctor Mack did not feel in the least jealous of his young assistant, but was very glad to note his popularity.

“If any one calls for me, Nancy,” he said, “say that I am away for a day or two and they can't do better than go to Doctor Winthrop.”