Gentlemen, -In the volume now in your hands, the authors have touched upon that ugly devil of crime, with which it is your glory to have contended. It were a waste of ink to do so in a serious spirit. Let us dedicate our horror to acts of a more mingled strain, where crime preserves some features of nobility, and where reason and humanity can still relish the temptation. Horror, in this case, is due to Mr. Parnell: he sits before posterity silent,...