"What's that--who's there ?" But, before the old gentleman could rise from his seat, or Bob and Nellie do anything save gape with astonishment, the window-sash was violently forced down; and, without a `by your leave' or any word of warning, a strange uncouth figure, so it seemed to their startled gaze, came squeezing through the opening and fell on the floor of the carriage at their feet in a clumsy sprawl..