Did you think I'd forget?
The Injun blood ain't in me for nothing.

And now I've GOT you, and you got to SETTLE, you know!" He was threatening the doctor, with his fist in his face, by this time.

The doctor struck out suddenly and stretched the ruffian on the ground.

Potter dropped his knife, and exclaimed: "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.