There is as much difference between Mr. Dicken’s later books and his Sketches by Boz as between Wilkie’s pseudo-Spanish pictures and “The Blind Fiddler” or “The Rabbit on the Wall.” He has become the most mannered of popular writers; and though his popularity, that is, the sale of his new works, increases rather than diminishes, we suspect that his readers are of a lower class than in the days of Pickwick and Oliver Twist.