“Very good; and I will ask you also to do it blindly, without always asking the reason.”

“Just as you like.”

“If you will do this I think the chances are that our little problem will soon be solved. I have no doubt—”

He stopped suddenly and stared fixedly up over my head into the air. The lamp beat upon his face, and so intent was it and so still that it might have been that of a clear-cut classical statue, a personification of alertness and expectation.

“What is it?” we both cried.

I could see as he looked down that he was repressing some internal emotion. His features were still composed, but his eyes shone with amused exultation.

“Excuse the admiration of a connoisseur,” said he as he waved his hand towards the line of portraits which covered the opposite wall. “Watson won’t allow that I know anything of art but that is mere jealousy because our views upon the subject differ. Now, these are a really very fine series of portraits.”

“Well, I’m glad to hear you say so,” said Sir Henry, glancing with some surprise at my friend. “I don’t pretend to know much about these things, and I’d be a better judge of a horse or a steer than of a picture. I didn’t know that you found time for such things.”

“I know what is good when I see it, and I see it now. That’s a Kneller, I’ll swear, that lady in the blue silk over yonder, and the stout gentleman with the wig ought to be a Reynolds. They are all family portraits, I presume?”

“Every one.”

“Do you know the names?”

“Barrymore has been coaching me in them, and I think I can say my lessons fairly well.”

“Who is the gentleman with the telescope?”

“That is Rear-Admiral Baskerville, who served under Rodney in the West Indies. The man with the blue coat and the roll of paper is Sir William Baskerville, who was Chairman of Committees of the House of Commons under Pitt.”

“And this Cavalier opposite to me—the one with the black velvet and the lace?”

“Ah, you have a right to know about him. That is the cause of all the mischief, the wicked Hugo, who started the Hound of the Baskervilles. We’re not likely to forget him.”

I gazed with interest and some surprise upon the portrait.

“Dear me!” said Holmes, “he seems a quiet, meek-mannered man enough, but I dare say that there was a lurking devil in his eyes. I had pictured him as a more robust and ruffianly person.”

“There’s no doubt about the authenticity, for the name and the date, 1647, are on the back of the canvas.”