I stuck my knife into his side, and summoned all my strength to throw him over.

He resisted, was desperate heavy; but at last I got him so far down the declivity that he lost his balance, and he rolled over and over till he landed on the margin of the river; but in his fall he dragged me along with him.

Fortunately, I fell uppermost, and his neck presented a fair mark for my hunting-knife.
Without allowing myself time even to draw breath, I aimed one desperate blow at his neck, and the knife entered his gullet up to the handle, and reached his heart.

He struggled for a few moments and died.

I have had many fights with bears, but that was mere child's play.