Read it through once

While I paced softly on, the last sound I expected to hear in so still a region, a laugh, struck my ear. It was a curious laugh; distinct, formal, mirthless. I stopped: the sound ceased, only for an instant; it began again, louder: for at first, though distinct, it was very low. It passed off in a clamorous peal that seemed to wake an echo in every lonely chamber; though it originated but in one, and I could have pointed out the door whence the accents issued.