Surely by thine own action!

Horace.

I see. You ran up to see what was the matter. Fact is, my head's still rather buzzy. I fancy I must have hit it somehow when I was trying to open that jar.

The Stranger.

Then it was thy hand and none other that removed the stopper?

Horace.

I—I suppose so. All I know is that something went off with a bang. I can't imagine what could have been inside the beastly thing!

The Stranger.

Who else but I myself?

Horace.