The "clearstory window of St. Leu d'Esserent, France" showing a sexfoil window, of six petals. -Whitney, 1911

Clerestory

The "clearstory window of St. Leu d'Esserent, France" showing a sexfoil window, of six petals. -Whitney,…

Illustration of a spire of the Senlis Cathedral in France, early 13th century. It is "one of the earliest of fully developed spires, and is admired for the purity and elegance of its design." —Whitney, 1889

Spire from the Senlis Cathedral

Illustration of a spire of the Senlis Cathedral in France, early 13th century. It is "one of the earliest…

"Flamboyant Tracery, Rouen Cathedral, Normandy" showing the intersecting ribs of tracery in windows of Gothic architecture. -Whitney, 1911

Tracery of Rouen Cathedral

"Flamboyant Tracery, Rouen Cathedral, Normandy" showing the intersecting ribs of tracery in windows…

The Nave of Bourges Cathedral in France showing the sexpartite vaulting, divided into six parts.

Sexpartite Vaulting

The Nave of Bourges Cathedral in France showing the sexpartite vaulting, divided into six parts.