Taking up the telephone, Markham again directed Swacker to get Rex on the wire. After a brief delay the connection was made and he handed the instrument to Ada.

“Hello, Rex dear,” she said. “Don’t scold me, for there’s nothing to worry about. . . . What I wanted of you is this:—in our private mail-box you’ll find a sealed envelope of my personal blue stationery. Please get it and bring it with you to Mr. Markham’s office. And don’t let any one see you take it. . . . That’s all, Rex. Now, hurry, and we’ll have lunch together down-town.”

“It will be at least half an hour before Mr. Greene can get here,” said Markham, turning to Vance; “and as I’ve a waiting-room full of people, why don’t you and Van Dine take the young lady to the Stock Exchange and show her how the mad brokers disport themselves.—How would you like that, Miss Greene?”

“I’d love it!” exclaimed the girl.

“Why not go along too, Sergeant?”

“Me!” Heath snorted. “I got excitement enough. I’ll run over and talk to the Colonel[19] for a while.”

Vance and Ada and I motored the few blocks to 18 Broad Street, and, taking the elevator, passed through the reception-room (where uniformed attendants peremptorily relieved us of our wraps), and came out upon the visitors’ gallery overlooking the floor of the Exchange. There was an unusually active market that day. The pandemonium was almost deafening, and the feverish activity about the trading-posts resembled the riots of an excited mob. I was too familiar with the sight to be particularly impressed; and Vance, who detested noise and disorder, looked on with an air of bored annoyance. But Ada’s face lighted up at once. Her eyes sparkled and the blood rushed to her cheeks. She gazed over the railing in a thrall of fascination.

“And now you see, Miss Greene, how foolish men can be,” said Vance.

“Oh, but it’s wonderful!” she answered. “They’re alive. They feel things. They have something to fight for.”

“You think you’d like it?” smiled Vance.