"Oh, you coward!" I cried. "You vile, filthy coward!"

He was looking down on me from his imperious height, very coolly, very cynically.

"Who are you?" he drawled; "I don't know you."

"Liar as well as coward," I panted. "Liar to your teeth. Brute, coward, liar----"

"Here, get out of my way," he snarled; "I've got to teach you a lesson."

Once more before I could guard he landed on me with that terrible right-arm swing, and down I went as if a sledgehammer had struck me.

But instantly I was on my feet, a thing of blind passion, of desperate fight. I made one rush to throw myself on this human tower of brawn and muscle, when some one pinioned me from behind. It was Jim.

"Easy, boy," he was saying; "you can't fight this big fellow."

Spitzstein was looking on curiously. With wonderful quickness a crowd had collected, all avidly eager for a fight. Above them towered the fierce, domineering figure of Locasto. There was a breathless pause, then, at the psychological moment, the Jam-wagon intervened.

The smouldering fire in his eye had brightened into a fierce joy; his twitching mouth was now grim and stern as a prison door. For days he had been fighting a dim intangible foe. Here at last was something human and definite. He advanced to Locasto.

"Why don't you strike some one nearer your own size?" he demanded. His voice was tense, yet ever so quiet.

Locasto flashed at him a look of surprise, measuring him from head to foot.

"You're a brute," went on the Jam-wagon evenly; "a cowardly brute."

Black Jack's face grew dark and terrible. His eyes glinted sparks of fire.

"See here, Englishman," he said, "this isn't your scrap. What are you butting in about?"

"It isn't," said the Jam-wagon, and I could see the flame of fight brighten joyously in him. "It isn't, but I'll soon make it mine. There!"

Quick as a flash he dealt the other a blow on the cheek, an open-handed blow that stung like a whiplash.

"Now, fight me, you coward."

There and then Locasto seemed about to spring on his challenger. With hands clenched and teeth bared, he half bent as if for a charge. Then, suddenly, he straightened up.

"All right," he said softly; "Spitzstein, can we have the Opera House?"

"Yes, I guess so. We can clear away the benches."

"Then tell the crowd to come along; we'll give them a free show."

I think there must have been five hundred men around that ring. A big Australian pugilist was umpire. Some one suggested gloves, but Locasto would not hear of it.

"No," he said, "I want to mark the son of a dog so his mother will never know him again."

He had become frankly brutal, and prepared for the fray exultantly. Both men fought in their underclothing.

Stripped down, the Jam-wagon was seen to be much the smaller man, not only in height, but in breadth and weight. Yet he was a beautiful figure of a fighter, clean, well-poised, firm-limbed, with a body that seemed to taper from the shoulders down. His fair hair glistened; his eyes were wary and cool, his lips set tightly. In the person of this living adversary he was fighting an unseen one vastly more dread and terrific.

Locasto looked almost too massive. His muscles bulged out. The veins in his forearms were cord-like. His great chest seemed as broad as a door.

His legs were statuesque in their size and strength. In that camp of strong men probably he was the most powerful.

And nowhere in the world could a fight have been awaited with greater zest. These men, miners, gamblers, adventurers of all kinds, pushed and struggled for a place. A great joy surged through them at the thought of the approaching combat. Keen-eyed, hard-breathing, a-thrill with expectation, the crowd packed closer and closer. Outside, people were clamouring for admission. They climbed on the stage, and into the boxes.

They hung over the galleries. All told, there must have been a thousand of them.

As the two men stood up it was like the lithe Greek athlete compared with the brawny Roman gladiator. "Three to one on Locasto," some one shouted. Then a great hush came over the house, so that it might have been empty and deserted. Time was called. The fight began.

CHAPTER V

With one tiger-rush Locasto threw himself on his man. There was no preliminary fiddling here; they were out for blood, and the sooner they wallowed in it the better. Right and left he struck with mighty swings that would have felled an ox, but the Jam-wagon was too quick for him.

Twice he ducked in time to avoid a furious blow, and, before Locasto could recover, he had hopped out of reach. The big man's fist swished through the empty air. He almost overbalanced with the force of his effort, but he swung round quickly, and there was the Jam-wagon, cool and watchful, awaiting his next attack.

Locasto's face grew fiendish in its sinister wrath; he shot forth a foul imprecation, and once more he hurled himself resistlessly on his foe.

This time I thought my champion must go down, but no! With a dexterity that seemed marvellous, he dodged, ducked and side-stepped; and once more Locasto's blows went wide and short. Jeers began to go up from the throng. "Even money on the little fellow," sang out a voice with the flat twang of a banjo.

Locasto glared round on the crowd. He was accustomed to lord it over these men, and the jeers goaded him like banderilleros goad a bull.

Again and again he repeated his tremendous rushes, only to find his powerful arms winnowing the empty air, only to see his agile antagonist smiling at him in mockery from the centre of the ring. Not one of his sledgehammer smashes reached their mark, and the round closed without a blow having landed.

From the mob of onlookers a chorus of derisive cheers went up. The little man with the banjo voice was holding up a poke of dust. "Even money on the little one." A hum of eager conversation broke forth.

I was at the ring-side. At the beginning I had been in an agony of fear for the Jam-wagon. Looking at the two men, it seemed as if he could hardly hope to escape terrible punishment at the hands of one so massively powerful, and every blow inflicted on him would have been like one inflicted on myself. But now I took heart and looked forward with less anxiety.

Again time was called, and Locasto sprang up, seemingly quite refreshed by his rest. Once more he plunged after his man, but now I could see his rushes were more under control, his smashing blows better timed, his fierce jabs more shrewdly delivered. Again I began to quake for the Jam-wagon, but he showed a wonderful quickness in his footwork, darting in and out, his hands swinging at his sides, a smile of mockery on his lips. He was deft as a dancing-master; he twinkled like a gleam of light, and amid that savage thresh of blows he was as cool as if he were boxing in the school gymnasium.

"Who is he?" those at the ring-side began to whisper. Time and again it seemed as if he were cornered, but in a marvellous way he wormed himself free. I held my breath as he evaded blow after blow, some of which seemed to miss him by a mere hair's breadth. He was taking chances, I thought, so narrowly did he permit the blows to miss him. I was all keyed up, on edge with excitement, eager for my man to strike, to show he was not a mere ring-tactician. But the Jam-wagon bided his time.

And so the round ended, and it was evident that the crowd was of the same opinion as myself. "Why don't he mix up a little?" said one. "Give him time," said another. "He's all right: there's some class to that work."

Locasto came up for the third round looking sobered, subdued, grimly determined. Evidently he had made up his mind to force his opponent out of his evasive tactics. He was wary as a cat. He went cautiously. Yet again he assumed the aggressive, gradually working the Jam-wagon into a corner. A collision was inevitable; there was no means of escape for my friend; that huge bulk, with its swinging, flail-like arms, menaced him hopelessly.

Suddenly Locasto closed in. He swooped down on the Jam-wagon. He had him. He shortened his right arm for a jab like the crash of a pile-driver. The arm shot out, but once again the Jam-wagon was not there. He ducked quickly, and Locasto's great fist brushed his hair.

Then, like lightning, the two came to a clinch. Now, thought I, it's all off with the Jam-wagon. I saw Locasto's eyes dilate with ferocious joy.

He had the other in his giant arms; he could crush him in a mighty hug, the hug of a grizzly, crush him like an egg-shell. But, quick as the snap of a trap, the Jam-wagon had pinioned his arms at the elbow, so that he was helpless. For a moment he held him, then, suddenly releasing his arms, he caught him round the body, shook him with a mighty side-heave, gave him the cross-buttock, and, before he could strike a single blow, threw him in the air and dashed him to the ground.

"Time!" called the umpire. It was all done so quickly it was hard for the eye to follow, but a mighty cheer went up from the house. "Two to one on the little fellow," called the banjo-voice. Suddenly Locasto rose to his feet. He was shamed, angered beyond all expression. Heaving and panting, he lurched to his corner, and in his eyes there was a look that boded ill for his adversary.

Time again. With the lightness of a panther the Jam-wagon sprang into the centre of the ring. More than halfway he met Locasto, and now his intention seemed to be to draw his man on rather than to avoid him. I watched his every movement with a sense of thrilling fascination. He had resumed his serpentine movements, advancing and retreating with shadow-like quickness, feinting, side-stepping, pawing the air till he had his man baffled and bewildered. Yet he never struck a blow.

All this seemed to be getting on Locasto's nerves. He was going steadily enough, trying by every means in his power to get the other man to "mix it up." He shouted the foulest abuse at him. "Stand up like a man, you son of a dog, and fight." The smile left the Jam-wagon's lips, and he settled down to business.