Mr. Potts, greatly relieved, shambled out, followed by Snitkin.
"The Flatiron Building is directly across Madison Square from the Stuyvesant Club," observed Markham, frowning.
"So it is." Vance then pointed to the left-hand margin of the newspaper that held the jewels. "And you'll notice that this Herald of yesterday has three punctures evidently made by the pins of a wooden holder such as is generally used in a club's reading-room."
"You got a good eye, Mr. Vance," nodded Heath, inspecting the newspaper.
"I'll see about this." Markham viciously pressed a button. "They keep their papers on file for a week at the Stuyvesant Club."
When Swacker appeared, he asked that the club's steward be got immediately on the telephone. After a short delay, the connection was made. At the end of five minutes' conversation Markham hung up the receiver and gave Heath a baffled look.
"The club takes two Heralds. Both of yesterday's copies are there, on the rack."
"Didn't Cleaver once tell us he read nothing but The Herald—that and some racing-sheet at night?" Vance put the question offhandedly.
"I believe he did." Markham considered the suggestion. "Still, both the club Heralds are accounted for." He turned to Heath. "When you were checking up on Mannix, did you find out what clubs he belonged to?"
"Sure." The Sergeant took out his note-book and riffled the pages for a minute or two. "He's a member of the Furriers' and the Cosmopolis."
