"Were that young man's diamonds bought at your store," asked Mark, smiling.
"They were only paste. They might deceive a novice, but I saw through them at once. But I must bid you good morning. I have to make a call at the Fifth Avenue Hotel."
A few blocks farther on the old lady got out.
Mark assisted her to the street.
"You're a very polite boy," she said. "You've done me a great favor. You had better take the five dollars I offered you."
"No, thank you, madam. I will wait till I have a chance to do you another service."
He did not resume his seat in the stage, having an errand on Eighteenth Street. As he was passing Lord & Taylor's store, he heard his name called.
Turning in some surprise he saw Maud Gilbert, the young lady he had escorted to Daly's Theater, leaving the store.
"How do you do, Mark?" she said, extending her hand with a smile.
"Very well, thank you, Miss Gilbert."