And this was not all; for the memory of the terrified nurse recalls with a
secret shudder those mysterious melodies which now enchain her ear. Yes;
through the piano roll sounds like the rumbling of thunder, and strains
are heard, now near, now far, that thrill the heart, and tones that fill
the soul with terror; through the vibrating chords all the spirits of the
other world seem to be speaking in an unknown tongue.

I do not know how long the housekeeper might have stood silent and
motionless, under the influence of the terror which mastered her, if Berta
had not observed her.

It caused her neither surprise nor alarm to see her nurse there.
Approaching her she took her by the hand, and, shaking her gently, said:

"Do you see?--Do you hear?--It is Adrian--Adrian who has come for me; the
white butterfly did not deceive me."

The housekeeper had by this time recovered herself sufficiently to pass
her hand over her forehead and to rub her eyes.

"I knew that he would come," continued Berta; "I have been waiting for him
every day."

The nurse, as if by a supreme effort, drew a deep breath.

"Do you hear those sighs that come from the piano?" said Berta. "It is he;
he is calling me; and since you are here, let us go to meet him."

And taking the lamp in her hand as she spoke, she added: