"It has just been borne in upon me, Jervis," said he, "that you are the most companionable fellow in the world. You have the heaven-sent gift of silence."
"If silence is the test of companionability," I answered, with a grin, "I think I can pay you a similar compliment in even more emphatic terms."
He laughed cheerfully and rejoined—
"You are pleased to be sarcastic, I observe; but I maintain my position. The capacity to preserve an opportune silence is the rarest and most precious of social accomplishments. Now, most men would have plied me with questions and babbled comments on my proceedings at Scotland Yard, whereas you have allowed me to sort out, without interruption, a mass of evidence while it is still fresh and impressive, to docket each item and stow it away in the pigeonholes of my brain. By the way, I have made a ridiculous oversight."
"What is that?" I asked.
"The 'Thumbograph.' I never ascertained whether the police have it or whether it is still in the possession of Mrs. Hornby."
"Does it matter?" I inquired.
"Not much; only I must see it. And perhaps it will furnish an excellent pretext for you to call on Miss Gibson. As I am busy at the hospital this afternoon and Polton has his hands full, it would be a good plan for you to drop in at Endsley Gardens—that is the address, I think—and if you can see Miss Gibson, try to get a confidential chat with her, and extend your knowledge of the manners and customs of the three Messieurs Hornby. Put on your best bedside manner and keep your weather eye lifting. Find out everything you can as to the characters and habits of those three gentlemen, regardless of all scruples of delicacy. Everything is of importance to us, even to the names of their tailors."
"And with regard to the 'Thumbograph'?"
"Find out who has it, and, if it is still in Mrs. Hornby's possession, get her to lend it to us or—what might, perhaps, be better—get her permission to take a photograph of it."