Note 36 — BOOK I.

The mosaic school subsisted at Rome as early as the eleventh and twelfth centuries. (See Musant. Fax Chronol. pp. 319, 338.) In this the family of the Cosmati acquired great excellence. Adeodato di Cosimo Cosmati employed himself in the church of St. Maria Maggiore, in 1290, (Guide to Rome); and several of the same name exercised their talents in the cathedral of Orvieto. (See Valle Catalogo.) The whole of these are preferred to the Greek mosaic workers, who were at the same period engaged in decorating St. Mark's at Venice. (See Valle's Preface to Vasari, p. 61.)