e in as fast as you shovel out the old ones."

"I have the advantage now that they don't know who is looking after
Lorna," said Bobbie. "But it was a hard job getting them off my track."

"That was good detective work--as good as I've heard of," said the
doctor. "You just keep shy now. Don't get into more gun fights and
fist scraps for a few days, and you'll get something on them again.
You know your catching them last night was just part of a general law
about crime. The criminal always gives himself away in some little,
careless manner that hardly looks worth while worrying about. Those
two fellows never dreamed of your following them--they let the name of
the restaurant slip out, and probably forgot about it the next minute.
And Jimmie the Monk has given you a clue to work on, to find out the
connection. Keep up your work--but keep a bullet-proof skin for a
while."

Bob started toward the door. A new idea came to him.

"Doctor, I've just thought of something. I saw a picture in the paper
to-night of a big philanthropist named Trubus, or something like that,
who is fighting Raines Law Hotels, improper novels, bad moving pictures
and improving morals in general. How do you think it would do to give
him a tip about these fellows? He asks for more money from the public
to carry on their work. They had a big banquet in his honor last
night."

MacFarland laughed, and took from his desk a letter, which he handed to
Bob with a wink. The young officer was surprised, but took the paper,
and glanced at it.

"There, Burke, read this letter. If I get one of these a day, I get
five, all in the same tune. Isn't that enough to make a man die a
miser?"

Officer 4434 took the letter over to the doctor's student lamp and read
with amusement:

"DEAR SIR--The Purity League is waging the great battle against sin.

"You are doubtless aware that in this glorious work it is necessary for
us to defray office and other expenses. Whatever tithe of your
blessings can be donated to our Rescue Fund will be bread cast upon the
waters to return tenfold.

"A poor widow, whose only child is a beautiful girl of seventeen, has
been taken under the care of our gentle nurses. This unfortunate
woman, a devout church attendant, has been prostrated by the wanton
conduct of her daughter, who has left the influence of home to enter
upon a life of wickedness.

"If you will contribute one hundred dollars to the support of this
mi