Carpi enjoys a different kind of honour, though as great in its way. For there were first commenced the works termed _a scagliola_, or _a mischia_, of mixed workmanship, the first inventor of which was Guido Fassi, or del Conte.[10] The stone, called selenite, forms the first ingredient in it. It is pounded and mixed with colours, and by the application of a certain glue, the composition becomes as hard as stone, forming a kind of marble, capable, with further care, of taking a gradual polish. The first trial was made upon cornices, which thus assume the appearance of fine marbles; and there remain also in Carpi, of the same composition, two altars by the hand of Guido himself. His fellow citizens began to avail themselves of this discovery; some adding one thing to it, and some another. Annibal Griffoni, a pupil of Guido, applied it to monuments, and even ventured upon the composition of pictures, intended to represent engravings upon copper, as well as pictures in oil; an attempt not very successful, insomuch that the specimens by his son Gaspero are not valued beyond a few tabernacles, and things in a similar taste. Giovanni Gavignani afforded assistance first to Guido, and next to Griffoni, surpassing both in a skilful application of the art. Thus, the altar of S. Antonio, in the church of S. Niccolo, at Carpi, is still pointed out as something extraordinary, consisting of two columns of porphyry, and adorned with a pallium embroidered with lace; an exact imitation of the covers of the altar, while it is ornamented in the margin with medals, bearing beautiful figures. Nor is the monument from the hand of one Ferrari in the cathedral, less perfect in its kind; where the marbles are so admirably counterfeited, that several tourists of the best taste have been induced to break a small portion, to convince themselves of the fact. There are, also, pictures preserved in private houses thus drawn by Gavignani; one of which consists of the Rape of Proserpine, executed with much elegance, in possession of Signor Cabassi. Footnote 10: In the _Novelle Letterarie of Florence_, 1771, it is asserted that this art was introduced about two ages back into Tuscany, giving rise to imitations of marbles, besides some fancy pieces. I have diligently sought after specimens thus antique, both at Florence and at Vallombrosa, where this art was in great vogue; but what I have seen are very trivial in their character, nor do they appear of so ancient a date.