constitute technical perfection, are to some degree within the reach of industry and intellectual courage. What to put in and what to leave out; whether some particular fact be organically necessary or purely ornamental; whether, if it be purely ornamental, it may not weaken or obscure the general design; and finally, whether, if we decide to use it, we should do so grossly and notably, or in some conventional disguise: are questions of plastic style continually rearising. And the sphinx that patrols the highways of executive art has no more unanswerable riddle to propound.
In literature (from which I must draw my instances) the great change of the past century has been effected by the admission of detail. It was inaugurated by the romantic Scott; and at length, by the semi-romantic Balzac and his more or less wholly unromantic followers, bound like a duty on the novelist. For some time it
