the arch of the young man's knee, as he might the neck of a restless horse.
"What then?" he asked, looking over his shoulder at the pale face with the startled eyes.
Twice the young man parted his lips. Then he stooped with a sudden gesture, and turning up the right leg of his trousers he pulled down his sock and thrust forward his shin. The doctor made a clicking noise with his tongue as he glanced at it.
"Both legs?"
"No, only one."
"Suddenly?"
"This morning."
"Hum."
The doctor pouted his lips, and drew his finger and thumb down the line of his chin. "Can you account for it?" he asked briskly.
"No."
A trace of sternness came into the large brown eyes.
"I need not point out to you that unless the most absolute frankness----"
The patient sprang from his chair. "So help me God!" he cried, "I have nothing in my life with which to reproach myself. Do you think that I would be such a fool
