"Here, now, don't you hit my pard!" and the next moment he had grappled with the doctor and the two were struggling with might and main, trampling the grass and tearing the ground with their heels. Injun Joe sprang to his feet, his eyes flaming with passion, snatched up Potter's knife, and went creeping, catlike and stooping, round and round about the combatants, seeking an opportunity. All at once the doctor flung himself free, seized the heavy headboard of Williams' grave and felled Potter to the earth with it--and in the same instant the half-breed saw his chance and drove the knife to the hilt in the young man's breast. He reeled and fell partly upon Potter, flooding him with his blood, and in the same moment the clouds blotted out the dreadful spectacle and the two frightened boys went speeding away in the dark.

     Presently, when the moon emerged again, Injun Joe was standing over the two forms, contemplating them. The doctor murmured inarticulately, gave a long gasp or two and was still. The half-breed muttered:

     "That score is settled--damn you."

     Then he robbed the body. After which he put the fatal knife in Potter's open right hand, and sat down on the dismantled coffin. Three--four--five minutes passed, and then Potter began to stir and moan. His hand closed upon the knife; he raised it, glanced at it, and let it fall, with a shudder. Then he sat up, pushing the body from him, and gazed at it, and then around him, confusedly. His eyes met Joe's.