Trapezoidal Ambulatory Vaults with Straight Diagonal Ribs
Of the three types, the one with straight diagonals ([Plate III-a.]) is perhaps most seldom seen, probably because of the awkward place at which its vault crown falls. It does appear, however, in the cathedral of Aversa near Naples[426], where the heaviness of the ribs would seem to denote an early date.[427] There are a few later examples elsewhere, among
them the cathedrals of Langres (Haute-Marne) (end of twelfth century) [(Fig. 80)] and Milan (beg. 1386), while a similar system with one or more added ribs in the outer severy is to be seen at Pontoise (Seine-et-Oise) S. Maclou ([Plate III-h.]), in the cathedral of Rouen ([Plate III-d.]), and in Saint Remi at Reims [(Fig. 83)], which are later described.
Fig. 80.—Langres, Cathedral.