But everybody knew how perfect an instrument her voice was; and there was no display of anger, but only of horror and dismay, the sort of dismay which men would have felt if they had witnessed the catastrophe that broke the arms of the Venus de Milo...

And even then they would have seen ...
and understood ...
But here that toad was incomprehensible! So much so that, after some seconds spent in asking herself if she had really heard that note, that sound, that infernal noise issue from her throat, she tried to persuade herself that it was not so, that she was the victim of an illusion, an illusion of the ear, and not of an act of treachery on the part of her voice....
Meanwhile, in Box Five, Moncharmin and Richard had turned very pale.
This extraordinary and inexplicable incident filled them with a dread which was the more mysterious inasmuch as for some little while, they had fallen within the direct influence of the ghost.

They had felt his breath.

Moncharmin's hair stood on end.

Richard wiped the perspiration from his forehead.