“Any strongly marked expression of face on the part of a chief actor in a scene of great interest to whom many eyes are directed, will be unconsciously imitated by the spectators. Her forehead was painfully anxious and intent as she gave this evidence, and, in the pauses when she stopped for the Judge to write it down, watched its effect upon the counsel for and against. Among the lookers-on there was the same expression in all quarters of the court; insomuch, that a great majority of the foreheads there, might have been mirrors reflecting the witness,”