The pen dropped from Darnay's fingers on the table, and he looked about him vacantly.
"What vapour is that?" he asked.
"Vapour?"
"Something that crossed me?"
"I am conscious of nothing; there can be nothing here. Take up the pen and finish. Hurry, hurry!"
As if his memory were impaired, or his faculties disordered, the prisoner made an effort to rally his attention. As he looked at Carton with clouded eyes and with an altered manner of breathing, Carton-his hand again in his breast-looked steadily at him.
"Hurry, hurry!"
The prisoner bent over the paper, once more.
"'If it had been otherwise;'" Carton's hand was again watchfully and softly stealing down; "'I never should have used the longer opportunity.
If it had been otherwise;'" the hand was at the prisoner's face; "'I should but have had so much the more to answer for.