their glory is their dissimilarity, and they who propose in the training of an artist that he should unite the coloring of Tintoretto, the finish of durer, and the tenderness of Correggio are no wiser than a hortculturist would be who made it the object of his labor to produce a fruit which should unite in itself the lusciousness of the grape, the crispness of the nut, and the fragrance of the pine.