McAllister tried with difficulty not to move.

Suddenly there came a shrill whistle, followed by the clatter of hoofs. A figure on horseback dashed by. The driver, endeavoring to rein in his now maddened beast, lost his balance and pitched overboard. There was a confusion of shouts, a blue flash, a loud report. The horse sprang into the air and fell, kicking, upon the pavement; the cab crashed upon its side; amid a shower of glass the door parted company with its hinges, and the stranger, placing his heel on McAllister's stomach, leaped quickly into the darkness. A moment later, having recovered a part of his scattered senses, our hero, thrusting himself through the shattered framework of the cab, staggered to his feet. He remembered dimly afterward having expected to create a mild sensation among the spectators by announcing, in response to their polite inquiries as to his safety, that he was "quite uninjured." Instead, however, the glare of a policeman's lantern was turned upon his dishevelled countenance, and a hoarse voice shouted:

"Throw up your hands!"

"Throw up your hands!"

He threw them up. Like the Phœnix rising from its ashes, McAllister emerged from the débris which surrounded him. On either side of the cab he beheld a policeman with a levelled revolver. A mounted officer stood sentinel beside the smoking body of the horse.

"No tricks, now!" continued the voice. "Pull your feet out of that mess, and keep your hands up! Slip on the nippers, Tom. Better go through him here. They always manage to lose somethin' goin' over."

McAllister wondered where "Over" was. Before he could protest, he was unceremoniously seated upon the body of the dead horse and the officers were going rapidly through his clothes.

"Thought so!" muttered Tom, as he drew out of McAllister's coat-pocket a revolver and a jimmy. "Just as well to unballast 'em at the start." A black calico mask and a small bottle filled with a colorless liquid followed.