“It was not delivered at his chambers, then?”

“No, sir. Mr. Blackmore was a very studious gentleman and he didn’t like to be disturbed. A studious gentleman would naturally not like to be disturbed.”

Thorndyke cordially agreed with these very proper sentiments and finally wished the porter “good night.” We passed out through the gateway into Wych Street, and, turning our faces eastward towards the Temple, set forth in silence, each thinking his own thoughts. What Thorndyke’s were I cannot tell, though I have no doubt that he was busily engaged in piecing together all that he had seen and heard and considering its possible application to the case in hand.