“ He designed furniture, mantelpieces, ceilings, chandeliers, doors and mural ornament with equal felicity, and as an artist in plaster work in low relief he was unapproached in his day. He delighted in urns and sphinxes and interlaced gryphons, in amorini with bows and torches, in trophies of musical instruments and martial weapons, and in flowering arabesques which were always graceful if sometimes rather thin. ”

“ Pergolesi likewise designed silver plate, and many of his patterns are almost instinctively attributed to the brothers Adam by the makers and purchasers of modern reproductions. There is, moreover, reason to believe that he aided the Adam firm in purely architectural work. In later life Pergolesi appears, like Angelica Kauffmann, to have returned to Italy. ”