Frightened by some alarm of sleep that was forgotten in the moment of waking, a little boy threw back the bedclothes and with quick heart and breath sat listening to the torrents of darkness that went rolling by. He dared not open his mouth to scream lest he should be suffocated; he dared not put out his arm to search for the bell-rope lest he should be seized; he dared not hide beneath the blankets lest he should be kept there; he could do nothing except sit up trembling in a vain effort to orientate himself.