“Look here,” she continued; “stoop down and lift up this trap-door yourself.”

“A trap-door!” said Raoul, astonished; for D’Artagnan’s words began to return to his memory, and he had an indistinct recollection that D’Artagnan had made use of the same word. He looked, but uselessly, for some cleft or crevice which might indicate an opening or a ring to assist in lifting up the planking.

“Ah, I forgot,” said Madame Henrietta, “I forgot the secret spring; the fourth plank of the flooring, — press on the spot where you will observe a knot in the wood. Those are the instructions; press, vicomte! press, I say, yourself.”

Raoul, pale as death, pressed his finger on the spot which