arrangement of parts. Whatever may be the carved and embroidered envelope of a cathedral, one always finds beneath it — in the state of a germ, and of a rudiment at the least — the Roman basilica. It is eternally developed upon the soil according to the same law. There are, invariably, two naves, which intersect in a cross, and whose upper portion, rounded into an apse, forms the choir; there are always the side aisles, for interior processions, for chapels, — a sort of lateral walks or promenades where the principal nave discharges itself through the spaces between the pillars.

That settled, the number of chapels, doors, bell towers, and pinnacles are modified to infinity, according to the fancy of the century, the people, and art. The service of religion once assured and provided for, architecture