Gardner's Art through the Ages: The Western Perspective, Volume II: The Western Perspective, Volume II (with CourseMate Printed Access Card)

by Fred S. Kleiner

The keystones (central voussoirs), for example, either have not fully settled or seem to be slipping from the arches—and, more eccentric still, Giulio even placed voussoirs in the pediments over the rectangular niches, where no arches exist.