.

.
Rouletabille motioned me to follow him up a magnificent flight of stairs ending in a landing on the first floor.

From this landing one could pass to the right or left wing of the chateau by a gallery opening from it.
This gallery, high and wide, extended along the whole length of the building and was lit from the front of the chateau facing the north.
The rooms, the windows of which looked to the south, opened out of the gallery.

Professor Stangerson inhabited the left wing of the building.
Mademoiselle Stangerson had her apartment in the right wing.
We entered the gallery to the right.

A narrow carpet, laid on the waxed oaken floor, which shone like glass, deadened the sound of our footsteps.