He was clean shaven, for his mouth was too good to cover--large, flexible, and sensitive, with a kindly human softening at either corner which with his brown sympathetic eyes had drawn out many a shame-struck sinner's secret. Two masterful little bushy side-whiskers bristled out from under his ears spindling away upwards to merge in the thick curves of his brindled hair. To his patients there was something reassuring in the mere bulk and dignity of the man. A high and easy bearing in medicine as in war bears with it a hint of victories in the past, and a promise of others to come. Dr. Horace Selby's face was a consolation, and so too were the large, white, soothing hands, one of which he held out to his visitor.

"I am sorry to have kept you waiting. It is a conflict of duties, you perceive--a host's to his guests and an adviser's to his patient. But now I am entirely at your disposal, Sir Francis. But dear me, you are very cold."

"Yes, I am cold."

"And you are trembling all over. Tut, tut, this will never do! This miserable night has chilled you. Perhaps some little stimulant----"

"No, thank you. I would really rather not. And it is not the night which has chilled me. I am frightened, doctor."

The doctor half-turned in his chair, and he patted 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 as to come here and tell you lies. Once for all, I have nothing to regret." He was a pitiful, half-tragic and half-grotesque figure, as he stood with one trouser leg rolled to the knee, and that ever present horror still lurking in his eyes. A burst of merriment came from the card-players in the next room, and the two looked at each other in silence.

"Sit down," said the doctor abruptly, "your assurance is quite sufficient." He stooped and ran his finger down the line of the young man's shin, raising it at one point. "Hum, serpiginous," he murmured, shaking his head. "Any other symptoms?"

"My eyes have been a little weak."

"Let me see your teeth." He glanced at them, and again made the gentle, clicking sound of sympathy and disapprobation.

"Now your eye." He lit a lamp at the patient's elbow, and holding a small crystal lens to concentrate the light, he threw it obliquely upon the patient's eye. As he did so a glow of pleasure came over his large expressive face, a flush of such enthusiasm as the botanist feels when he packs the rare plant into his tin knapsack, or the astronomer when the long-sought comet first swims into the field of his telescope.

"This is very typical--very typical indeed," he murmured, turning to his desk and jotting down a few memoranda upon a sheet of paper. "Curiously enough, I am writing a monograph upon the subject. It is singular that you should have been able to furnish so well-marked a case." He had so forgotten the patient in his symptom, that he had assumed an almost congratulatory air towards its possessor. He reverted to human sympathy again, as his patient asked for particulars.

"My dear sir, there is no occasion for us to go into strictly professional details together," said he soothingly. "If, for example, I were to say that you have interstitial keratitis, how would you be the wiser? There are indications of a strumous diathesis. In broad terms, I may say that you have a constitutional and hereditary taint."

The young baronet sank back in his chair, and his chin fell forwards upon his chest. The doctor sprang to a side-table and poured out half a glass of liqueur brandy which he held to his patient's lips.