Note 20 — Chapter I
Reading edition
These incrustations, and the basilica to which they belong, have been illustrated by Ciampini: Vetera monumenta, vol. i. plates xxii.-xxiv.—D'Agincourt: Histoire de l'art, Peinture, pl. xiii. 3.—Minutoli: Ueber die Anfertigung und die Nutzanwendung der färbigen Gläser bei den Alten, pl. iv.—De Rossi: La basilica di Giunio Basso, in the Bullettino di archeologia cristiana, 1871, p. 46.