Study, which was provided with an old-fashioned brass lock, the likes of which are only found in the Netherlands at the present time.
Tricamp turned the key. Crick! Crack! It was evident that the lock had not been tampered with.
"And the window?" asked the officer, handing Balthazar the key of the study.
"The window was closed," said Cornelius: "we opened it when we called for assistance. Besides, Mijnheer, it has stout iron bars, and no one could possibly pass through there."
M. Tricamp assured himself that such was the case, and he remarked that not even a child could effect an entrance through those bars. Then he closed and bolted the window and turned his attention towards the fireplace.
Balthazar followed all of his movements without uttering a word.
M. Tricamp leaned over and examined the interior of the fireplace most minutely; but here again nothing but failure rewarded him for his trouble. A thick wall had been built there recently, allowing only enough room for a small stovepipe.
M. Tricamp did not question for a moment whether this opening would permit the passage of a human being, for it seemed altogether too improbable, therefore, when he drew himself up, he appeared to be anything but pleased.
