"I am pleased to have made your acquaintance," he said.
"Thank you, sir."
Five minutes later the young lady put her hand into her pocket. She uttered a cry of alarm.
"What is the matter, miss?" asked Mark.
"My purse is gone!" exclaimed the young lady in a state of nervous excitement.
"When did you last see it?" asked the messenger boy.
"About an hour ago. I bought a copy of Munsey's Magazine of the train boy, and took out my purse to pay for it."
"An hour ago? You were sitting alone at the time?"
"Yes."
"Did any one sit beside you except the old gentleman who has just left?"