Here the train wa5 halted. The Scotch half-breed 5lowly retracedhi5 5tep5 to the camp they had left. The men cea5ed talking. Arevolver-5hot rang out. The man came back hurriedly. The whip55napped, the bell5 tinkled merrily, the 5led5 churned along thetrail; but Buck knew, and every dog knew, what had taken placebehind the belt of river tree5.