This time, as Billy started forward at the challenge, I regret to say that in his passion he snatched up from the street a broken buggy-spoke, before which warlike weapon the strange boy was forced warily to retreat. Step by step he gave way, and step by step his threatening foe advanced. I think, perhaps, part of the strange boy's purpose in thus retreating was to arm himself with one of the "ax- handles" that protruded from a churn standing in front of a grocery, toward which he slowly backed across the sidewalk. However that may be, it is evident he took no note of an open cellar-way that lay behind him, over the brink of which he deliberately backed, throwing up his hands as he disappeared. We heard a heavy fall, but heard no cry. Some loungers in the grocery, attracted by the clamor of the throng without, came to the door inquiringly; one man, learning what had happened, peered down the stairway of the cellar, and called to ask the boy if he was hurt, which query was answered an instant later by the appearance of the boy himself, his face far whiter than his shirt, and his lips trembling, but his teeth clenched. "Guess I broke my arm ag'in," he said, briefly, as the man leaned over and helped him up the steps, the boy sweeping his keen eyes searchingly over the faces of the crowd. "It's the RIGHT arm, though," he continued, glancing at the injured member dangling helplessly at his side--"THIS-'UN'S all right yet!" and as he spoke he jerked from the man's assistance, wheeled round, and an instant later, as a buggy-spoke went hurtling through the air, he slapped the bewildered face of Billy with his open hand. "Dam' coward!" he said. Then the man caught him, and drew him back, and the crowd closed in between the combatants, following, as the boy with the broken arm was hurried down street to the doctor's office, where the door was immediately closed on the rabble and all the mystery within--not an utter mystery, either, for three or four enterprising and sagacious boys slipped off from the crowd that thronged in front, and climbing by a roundabout way and over a high board fence into the back yard, secretly posted themselves at the blinded window in the rear of the little one-roomed office and breathlessly awaited news from within. "They got him laid out on the settee," whispered a venturous boy who had leaned a board against the window-sill and climbed into a position commanding the enviable advantage of a broken window- pane. "I kin see him through a hole in the curtain. Keep still! "They got his coat off, and his sleeve rolled up," whispered the boy, in continuation--"and the doctor's a-givin' him some medicine in a tumbler. Now he's a-pullin' his arm. Gee-mun-nee! I kin hear the bones crunch!" "Hain't he a-cryin'?" queried a milk-faced boy, with very large blue eyes and fine white hair, and a grieved expression as he spoke.--"Hain't he a-cryin'?"