She, that is, the writer, whose name, as nearly as I could make out, was Bertha Desberger, knew such a person as I described, and could give me news of her if I would come to her house in West Ninth Street at four o'clock Sunday afternoon.

If I would! I think my face must have shown my satisfaction, for Mr. Alvord, who was watching me, sarcastically remarked:

"You don't seem to find any difficulties in that communication. Now, what do you think of this one?"

He held out another letter which had been directed to him, and which he had opened. Its contents called up a shade of color to my cheek, for I did not want to go through the annoyance of explaining myself again:

"Dear Sir:

"From a strange advertisement which has lately appeared in the Herald, I gather that information is wanted of a young woman who on the morning of the eighteenth inst. entered my store without any bonnet on her head, and saying she had met with an accident, bought a hat which she immediately put on. She was pale as a girl could be and looked so ill that I asked her if she was well enough to be out alone; but she gave me no reply and left the store as soon as possible. That is all I can tell you about her."

With this was enclosed his card:

PHINEAS COX,
Millinery,
Trimmed and Untrimmed Hats,
—— Sixth Avenue.

"Now, what does this mean?" asked Mr. Alvord. "The morning of the eighteenth was the morning when the murder was discovered in which you have shown such interest."

"It means," I retorted with some spirit, for simple dignity was thrown away on this man, "that I made a mistake in choosing your office as a medium for my business communications."