"Now, look at the bell and tell me if it rings when I pull the wire."

Balthazar went out into the hall and did as directed.

"Does it move?" called out Cornelius.

"Just a little," answered Balthazar, "but it can't ring because the bell is turned upside down, with the tongue in the air."

"Good! We will look into that later. Now, steady the secrétaire while I get up there."

Then, with the assistance of the knife, Cornelius drew himself up painfully to where the paper had been removed, as if he desired to test the practicability of such an ascension.

Just then Gudule set up a frightful howl outside; Balthazar left his friend in mid-air while he ran out to see what was the matter.

"Oh, master," she cried; "she has just escaped!"

"Christina?"

"Yes, Mijnheer, I saw her as she fled through the garden. Make haste and follow her before it is too late!"