Walpole, Horace. _Anecdotes of Painting in England._ 1762, 4 vols. 4to. i. 317. Winkelman, Gio. _History of the Arts of Design among the Ancients._ I have cited the Roman edit. with notes by the Sig. Avv. Fea. Rome, 1783, 1784, 3 vols. 4to. ii. 6, 265. ---- _Gemme del Barone Stochs_, 4to. i. 166.