back room cheaper?" inquired our hero.

"Yes; but it is occupied by a business gentleman."

"Can you tell me his name? I may be acquainted with him."

"His name is Haynes."

"How much does he pay?"

"He pays eight dollars a week, and has the room alone."

"I suppose his room is not likely to become vacant soon?"

"Oh, dear, no. He has been with us for several years. We should be sorry
to lose him. Last Christmas he gave my daughter a present of a nice
silk-dress pattern."

Frank was struck by this information.

"I don't believe he paid anything for the silk," thought he. "I wish I
could find out."

He had learned all he cared for, and left, saying he might call again.

"His expenses seem very moderate for a man in his position," thought
Frank. "I wonder if he makes any investments."

Fortune favored our hero in the prosecution of his inquiry. Keeping
Haynes in sight, as was his custom, he observed that the latter, in
pulling out a handkerchief from the breast-pocket of his coat, had
brought with it a letter also. Frank, quickly and unobserved, picked it
up, and when he was alone looked at the address. It was directed to
James Haynes, at his residence in Waverley place. On the envelope was
the printed address of a real-estate broker in Brooklyn.

Frank knew that there was at that time considerable speculation in
Brooklyn real estate, and he examined the letter. It ran thus:--

We have found a corner lot, with several lots adjoining, near
Prospect Park, which may be obtained for five thousand dollars,
half cash. We have no hesitation in recommending the purchase,
being convinced, from the tendencies of the market, that the buyer
will double his money in a comparatively short time. If you are
engaged at other times, come over on Sunday afternoon, and we will
show you the property. The house you purchased of us last year is
worth fully a thousand dollars more than the price you gave.

"I wonder how much he gave," said Frank to himself.

The letter was signed "Henderson & Co., No. -- Fulton street."

Our hero was elated by the discovery he had made, and he sought an
interview with Mr. Hartley.

"Have you discovered anything?" asked the merchant, noticing the eager
look of his young detective.

Without attaching especial importance to the fact, Frank answered, "I
have found out that Mr. Haynes owns a house in Brooklyn."

"Indeed!" said Hartley, quickly. "But," he