In the evening Dr. Duncan contrived to meet her alone on the balcony that surrounded the hospital.

"You look very ill, Miss Riley," he observed.

"I am," she replied hastily. "I am worried about Mary."

All her old flippant manner had departed. She was evidently much concerned about her friend's illness. "She has a heart after all," thought the doctor.

"I wanted to speak to you about Miss King," he said; "I have not clearly understood from you yet why or how she fainted. Did she recognize the man?"

"I don't know," replied Susan, hap-hazard, and not considering what she was saying. "I don't think her fainting had much to do with seeing him in any case. She has been very ill for some time."

The doctor nodded his head as in acquiescence to this view. "Yes!" he reflected, "it must be so; the mere sight of poor Hudson, even if she has known him at some time, would not have been a sufficient cause by itself."

He remembered, too, how on the previous day Mary had stated that she had no male acquaintances, save those connected with the hospital. He loved her too well to mistrust her. He knew she would not deceive him, so the fact of Hudson's having called out her name in his delirium gave him no uneasiness.

"What do you think is the matter with her, Dr. Duncan?" asked Susan timidly.