The others drew back, watching her with the greatest curiosity.
A droning song oozed from the thin lips; the gesticulations grew in weirdness and fervor.

Then, before their startled eyes, a thin film of smoke began to rise from the empty pot.

It grew in volume until the room was quite dense with it.

Even more quickly than it began, it disappeared, drawn apparently by some supernatural agency into the draft of the stove and out through the rickety chimney pipe.

Even Dangloss blinked his eyes, and not because they were filled with smoke.
A deafening crash, as of many guns, came to their ears from the outside.
With one accord the entire party rushed to the outer door, a wild laugh from the hag pursuing them.
"There!" she screamed.