After a space, while a dainty colourist like Ottaviano Nelli painted enlarged miniatures and vapid angel faces, there arose a few miles off, at Arezzo, one of the strongest of masters; Piero della Francesca set a star of grand simplicity as a constraining guide, calm and broad, before those men who had the gift of the open eye. The character of that art was as exacting as it was scientific. It was as much geometrical and mathematical as artistic, and was occupied more with problems than with religious feeling. Its power was felt over a wide area, and moved even those who were least naturally alive to it. There seemed a likelihood that Umbrian art would, on the one hand, become absorbed in the Florentine character, hardly distinguishable from it, and, on the other, degenerate into puerile prattle; but there had wandered to Montefalco, one from Florence, who, to the enlightenment and the conscious effort drawn from those who clustered round Donatello and Masaccio, added a temper which appealed directly to the native feeling of Umbria. Benozzo Gozzoli was not a great painter, but his talent for narrative painting set a new model before those whose aptitude in that direction responded to the impulse. A school arose which combined in curious harmony the love of decorative detail of the miniature pictures, the space effects of Piero's large and airy settings, and the story-telling proclivities of the naïve and garrulous Florentine. Though Pintoricchio's early years are obscure, little doubt can exist as to his artistic derivation from Fiorenzo di Lorenzo, who combined the characteristics of the newly developed school in a pre-eminent degree. Rumohr ascribes Pintoricchio's style primarily to the school of Niccolò da Foligno. This attribution is founded partly on the "Altar-piece of Santa Maria dei Fossi," the arrangement of which is similar to some of Niccolò's great anconas, the Madonna and Child enthroned in the centre, saints in panels on either side, a Pietà above, which divides an Annunciation into two parts. The types in this last scene certainly resemble Niccolò's, and were constantly repeated by Bernardino; but the angels in the Pietà are from Fiorenzo, and the whole spirit is opposed to that of the intense and austere Folignate. It was painted, too, so long after Bernardino's art was fully formed that it can hardly serve to illustrate any early influence. No doubt, when he visited Foligno at this time, he took many ideas from what Niccolò had left there. Something too he owed to Benedetto Bonfigli; the cheerful naïveté, the quaint adornments of dress and garland which attract us in Bonfigli, are traits which we find in Pintoricchio. The little oval, pointed face, with its arched brows, and small, close shut mouth, the type to which Bonfigli is constant, is that to which Pintoricchio adheres for his Madonna and angels; but this type is to be found too in Fiorenzo's earlier work, as in his "Adoration of the Child" in the Gallery in Perugia.