At that moment, a terrible clap of thunder seemed to burst in the very room beside them; and ere Cosmo could repeat the blow, he fell senseless on the hearth.

When he came to himself, he found that the lady and the mirror had both disappeared.

He was seized with a brain fever, which kept him to his couch for weeks.
When he recovered his reason, he began to think what could have become of the mirror.

For the lady, he hoped she had found her way back as she came; but as the mirror involved her fate with its own, he was more immediately anxious about that.

He could not think she had carried it away.