She had heard and read a great deal about the grand structure, and she determined to walk across and see how it would compare with the wonderful Brooklyn Bridge.

She was feeling very well, the morning was bright, and she enjoyed her walk immensely. By the time she returned her cheeks were like wild roses, and her whole face glowing from exercise.

She was a little weary, however, and glad to get seated again in a car going back toward her hotel.

The car had proceeded only about half a block, however, when it stopped again, and two people, a man and a woman, stepped aboard, and seated themselves next to her.

They seemed to be absorbed in earnest conversation, and did not appear to notice any one about them.

The woman was an elderly person, rather fine looking, with a good figure, and an erect, graceful bearing. Her hair was almost white, and there were deep wrinkles in her forehead, at the corners of her eyes, and about her mouth, although they were somewhat concealed, or softened, by the thickly spotted black lace veil which she wore; but on the whole she was an agreeable looking person, and her manner was full of energy and vitality.

Her companion was a rather rough-appearing personage and dressed like a Western farmer or miner, rather coarsely handsome, and with an easy, off-hand manner that was quite attractive, and he might have been thirty or thirty-five years of age.

"What a dark skin—what black hair and beard, with blue eyes!" was Mona's mental comment, as she observed this peculiarity about him. He also had very white teeth, which contrasted strikingly with the intense blackness of his mustache and beard.

He appeared to be quite disturbed about something, and talked to his companion rapidly and excitedly, but in low tones.

"You were very imprudent to try to dispose of so many at one place," Mona overheard his companion say, in reply to some observation which he had previously made, and then a great shock went tingling through all her nerves as her glance fell upon the dress which the woman wore.