[Footnote 90: Francesco Appiani, of Ancona, a scholar of Magatta, and not long since deceased, did not find a place in my former edition, but is fully entitled to one in this. He studied a considerable time in Rome, whilst Benefial, Trevisani, Conca, and Mancini, flourished there; and through the friendship of these masters (particularly of the latter), was enabled to form an agreeable style, of which he there left a specimen at S. Sisto Vecchio. It is the death of S. Domenico, painted in fresco, by order of Benedict XIII. who remunerated him with a gold medal. He went afterwards to Perugia, where he was presented with the freedom of the city, and continued his labours there with unabated ardour, until ninety years of age, an instance of vigour unexampled, except in the case of Titian. Perugia abounds with his paintings of all kinds, and his best works are to be found in the churches of S. Pietro de' Cassinensi, S. Thomas, and Monte Corona. He also decorated the church of S. Francis, and the vault of the cathedral, where he rivalled the freedom of style and composition of Carloni. Both he himself, and one of his pictures, placed in a church of Masaccio, are eulogised in the Antich. Picene (tom. xx. p. 159). He painted many pictures also for England.] [Footnote 91: For a more particular catalogue of these works, see the _Memorie delle belle arti_, 1788, in which year they were republished in Rome, with the remarks of the Sig. Avvocato Fea, in one vol. 4to. and 2 vols. 8vo. The most celebrated treatise of Mengs is the _Riflessioni sopra i tre gran pittori, Raffaello, Tiziano, e Coreggio, e sopra gli antichi_. On the life and style of Coreggio he wrote a separate paper, which was afterwards the subject of a controversy; for as, at the close of the year 1781, appeared the _Notizie storiche del Coreggio_ of Ratti, accompanied by a letter from Mengs, dated Madrid, 1774, in which he entreats Ratti to collect and publish them, Ratti was by several writers accused of plagiarism, and of having endeavoured, by a change of style and the addition of some trifling matter, to appropriate to himself what in reality belonged to Mengs. Not long afterwards there appeared an anonymous Defence of Ratti, without date or place, for which I refer to the next note.]