Bologna had to boast little that was great in regard to ornamental architecture up to the time of Dentone (Girolamo Curti), who became its restorer also in other parts of Italy. I say restorer, inasmuch as Gio. and Cherubino Alberti at Rome, and the Sandrini at Brescia, with the Bruni in Venice, had produced some fine specimens. Nor, if we consider the times, were Agostino dalle Prospettive and Tommaso Lauretti, in Bologna itself, destitute of merit, as we have already stated. But their models being either neglected or corrupted by their successors, produced no solid advantage to the art; so that there were either no quadraturists in any cities of Italy, or they were extremely rare, and esteemed only as the refuse of the figurists. Dentone, with his companions, not only revived, but elevated and enlarged this art. Sprung from a spinning manufactory of the Signori Rizzardi, he commenced under Lionello Spada to attempt the design of figures; and finding this too difficult, he turned to ornamental painting, and acquired from Baglione the use of the rule, and to draw the lines. He proceeded no farther with this master; but, having purchased the works of Vignola and Serlio, he in these studied the different orders of architecture, grounded himself in perspective, formed a solid and well regulated taste, which he farther improved with what he saw at Rome, among the remains of ancient architecture. He attempted much in the form of relief, which is indeed the soul of this profession. His fine illusions of cornices, colonnades, lodges, balustrades, arches, and modiglioni, seen with the effect of foreshortening, have led to the supposition of his being assisted by stuccos, or some materials of strong relief; while the whole is produced by the effect of chiaroscuro, brought to a facility, truth, and grace never before seen. In his colours he preserved those of the stones and marbles; avoiding those tints of gems and precious stones, afterwards introduced at the expense of all verisimilitude. It was an invention of his to lay gold-leaf over his works in fresco. He made use of burnt oil, with turpentine and yellow wax, melted together, and placed, in a dissolved state, with a fine pencil, on the parts where the lights occur, and where the gold leaf is applied. Still he but sparingly availed himself of such discovery, consigning its abuse to his followers. Anxious for durability, he was accustomed to rough sketch, and afterwards to fill up with other layers, then making of the whole one solid impasto, or mingled layers of colours; while in the most exposed spots, not trusting wholly to the plaster, he united very fine portions of white marble, as subtly inserted as we see in the façade of the Grimaldi palace. He thus conferred fresh lustre on both palaces and churches; and next proceeding to the theatres, he exhibited novel spectacles in them. The nearmost scenes he painted with the most commanding power of shade, and diminishing its depth by degrees,