Brick and marble in the Middle Ages: notes of a tour in the north of Italy (1855)
Street, George Edmund, 1824-1881 · London, J. Murray · leaf 106
Chap. V, CHURCHES. 69 the arches have occasional voussoirs of stone, and thecentre of the arch is always marked by a key-stone,and these are sometimes slightly carved to distinguishthem from the other stone voussoirs. The abaci are ofbrick, moulded and very varied. The doorway givenin the woodcut…
