The door stands open of a handsome house in Walnut Street-the Walnut Street which belongs to the city of William Penn; and on the threshold stands a lady, with her hand up to her brows, shielding her eyes from the light. She is watching to see what will come out of a carriage just driving up to the curbstone. The carriage stops; there descends first the figure of a handsome, very comfortable-looking gentleman. Mrs. Eberstein's eyes pass over him very cursorily; she has seen him before; and there is hardly a curl on his handsome head which his wife does not know by heart. What comes next?