It was hung from a heavy, slack wire from the brick walls of two opposite buildings, and the banner attracted considerable attention because of a novel picture on it.

Joe and Helen were standing in the street, looking up at the swaying creation of canvas and netting, when a woman's cry came to their ears.

"Look! Look! The cat! The cat is walking the wire!" she exclaimed.

Joe and Helen turned first to see who it was that had cried out. It was a woman in the street, and with her parasol she pointed upward.

There, surely enough, half way out on the thick, slack wire, and high above the middle of the street was a large white cat. It was walking the wire as one's pet might walk the back fence. But this cat seemed to have lost its nerve. It had got half way across, but was afraid to go farther and could not turn around and go back.

As Joe and Helen looked, a woman appeared at the window of one of the buildings from the front walls of which the banner was suspended, and, pointing at the cat, cried:

"A hundred dollars to whoever saves my cat! A hundred dollars reward!"

[!-- CH11 --]

CHAPTER XI

THE RESCUE