"At three this afternoon."

"I will take it. I must go and see Dr. Crabb."

"But won't you come back again?"

"I don't know. I am all in the dark. I think something must have happened to my father."

Dr. Crabb was at his desk in his library—it was Saturday afternoon, and school was not in session—when Andy knocked at the door.

"Come in!" said the doctor, in a deep voice.

Andy opened the door and entered. Dr. Crabb smiled, for Andy was his favorite pupil.

"Come in, Grant!" he said. "What can I do for you?"

"Give me permission to go home. I have just had a telegram. I will show it to you."

The doctor was a man of fifty-five, with a high forehead and an intellectual face. He wore glasses, and had done so for ten years. They gave him the appearance of a learned scholar, as he was.