"Never mind that, I was wakeful."

"I heard a door open, which kept me listening, but I could not decide which door it was till I heard your voice in the corridor."

"Well, it was this door; and I opened it twice in consequence of the repeated taps for admission that came to it; some one has been knocking at it, and, when I go to it, lo! I can see nobody."

"Indeed!"

"Such is the case."

"You surprise me."

"I am very sorry to have disturbed you, because, upon such a ground, I do not feel that I ought to have done so; and, when I called out in the corridor, I assure you it was with no such intention."

"Do not regret it for a moment," said Henry; "you were quite justified in making an alarm on such an occasion."

"It's strange enough, but still it may arise from some accidental cause; admitting, if we did but know it, of some ready enough explanation."