“I can’t stand this!” said Lupin. “Let’s go higher.”

A fresh staircase. A fresh door.

“The tapestry-room,” Lupin announced.

The tapestries were not hung on the walls, but rolled, tied up with cord, ticketed; and, in addition, there were parcels of old fabrics which Lupin unfolded: wonderful brocades, admirable velvets, soft, faded silks, church vestments woven with silver and gold—

They went higher still and Beautrelet saw the room containing the clocks and other time-pieces, the book-room—oh, the splendid bindings, the precious, undiscoverable volumes, the unique copies stolen from the great public libraries—the lace-room, the knicknack-room.

And each time the circumference of the room grew smaller.

And each time, now, the sound of knocking was more distant. Ganimard was losing ground.

“This is the last room,” said Lupin. “The treasury.”

This one was quite different. It was round also, but very high and conical in shape. It occupied the top of the edifice and its floor must have been fifteen or twenty yards below the extreme point of the Needle.

On the cliff side there was no window. But on the side of the sea, whence there were no indiscreet eyes to fear, two glazed openings admitted plenty of light.