“Just so.”
“Sun in your eyes and his face in the shadow?”
“Well, it was evening; but I mind that the lamp was turned on my face.”
“It would be. Did you happen to observe a picture over the professor’s head?”
“I don’t miss much, Mr. Holmes. Maybe I learned that from you. Yes, I saw the picture—a young woman with her head on her hands, peeping at you sideways.”
“That painting was by Jean Baptiste Greuze.”
The inspector endeavoured to look interested.
“Jean Baptiste Greuze,” Holmes continued, joining his finger tips and leaning well back in his chair, “was a French artist who flourished between the years 1750 and 1800. I allude, of course to his working career. Modern criticism has more than indorsed the high opinion formed of him by his contemporaries.”
The inspector’s eyes grew abstracted. “Hadn’t we better—” he said.
“We are doing so,” Holmes interrupted. “All that I am saying has a very direct and vital bearing upon what you have called the Birlstone Mystery. In fact, it may in a sense be called the very centre of it.”