thick-headed idiot!" rasped the surly stranger. "Ye--"

From that the stranger launched into a strain of abuse that staggered
the young engineer.

"Say no more," begged Reade generously. "I accept your apology, just as
you've phrased it."

"Apology, ye fool!" growled the stranger.

"That won't do. Put up your hands!"

"Why?"

"So ye can fight, ye--"

"Fight?" echoed Tom, with a shake of his bead. "On a hot night like
this? No, sir! I refuse."

Tom would have passed peaceably on his way, but the stranger suddenly
let go a terrific right-hander. Had Tom Reade received the blow he would
have gone to the ground. But the young engineer's athletic training
stood by him. He slid out, easily and gracefully, but was compelled to
wheel and face his assailant.

"Don't," urged Tom. "It's too hot."

"I'm hot myself," leered the stranger, dancing nearer.

"You look it," Tom admitted. "If you don't stop dancing, you'll soon be
hotter. It makes me warm to look at you."

"Stop this one, ye tin-horn!" snarled the stranger.

"Certainly," agreed Tom, blocking the blow. "However, I wish you
wouldn't be so strenuous. One of us may get hurt."

This last escaped Reade as he blocked the blow, and again displayed a
neat little bit of footwork.

"Let's see you stop this one!" taunted the bully.

"Certainly," agreed Tom, and did so.

"And this one. And this! Here's another!"

By this time the blows were raining in fast and thick. Tom's agile
footwork kept him out of reach of the hard, hammer-like fists of the
stranger.

Tom had been bred in athletics. He was comparative master of boxing,
but before this interchange of blows had gone far the young engineer
realized that he had met a doughty opponent.

What Tom didn't know was that his present foe was an ex-prizefighter,
who had sunk low in the scale of life.

What the lad didn't even suspect was that the man had been hired to pick
a fight with him, and that the fight was for desperate stakes.

"Have you pounded me all you think necessary?" asked Tom coolly, after
more than a minute's hard interchange of blows in which neither man had
gained any notable advantage.

"No, ye slant-eared boob!" roared the assailant. "Ye--"

Here he launched into another stream of abuse.

"You said all that before," remarked Tom, with a new flash in his eyes.
Then fully aroused, he went to work in earnest, intending to drive his
opponent back and down him.

The fighting became terrifi